diff --git a/.gitignore b/.gitignore
index 16215cb..2e3d0f9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,5 @@ result
 
 # Everyone their own
 tmp/
+tests/.DS_Store
+.DS_Store
diff --git a/Cargo.lock b/Cargo.lock
index bd358fb..2893d3b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,30 +4,33 @@ version = 4
 
 [[package]]
 name = "adler2"
-version = "2.0.0"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.3"
+version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
-name = "allocator-api2"
-version = "0.2.21"
+name = "alloca"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
+checksum = "e5a7d05ea6aea7e9e64d25b9156ba2fee3fdd659e34e41063cd2fc7cd020d7f4"
+dependencies = [
+ "cc",
+]
 
 [[package]]
-name = "android-tzdata"
-version = "0.1.1"
+name = "allocator-api2"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
+checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
 [[package]]
 name = "android_system_properties"
@@ -46,9 +49,9 @@ checksum = "4b46cbb362ab8752921c97e041f5e366ee6297bd428a31275b9fcf1e380f7299"
 
 [[package]]
 name = "anstream"
-version = "0.6.18"
+version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
 dependencies = [
  "anstyle",
  "anstyle-parse",
@@ -61,37 +64,37 @@ dependencies = [
 
 [[package]]
 name = "anstyle"
-version = "1.0.10"
+version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55cc3b69f167a1ef2e161439aa98aed94e6028e5f9a59be9a6ffb47aef1651f9"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
 
 [[package]]
 name = "anstyle-parse"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b2d16507662817a6a20a9ea92df6652ee4f94f914589377d69f3b21bc5798a9"
+checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
 dependencies = [
  "utf8parse",
 ]
 
 [[package]]
 name = "anstyle-query"
-version = "1.1.2"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79947af37f4177cfead1110013d678905c37501914fba0efea834c3fe9a8d60c"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "anstyle-wincon"
-version = "3.0.7"
+version = "3.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca3534e77181a9cc07539ad51f2141fe32f6c3ffd4df76db8ad92346b003ae4e"
+checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
- "once_cell",
- "windows-sys 0.59.0",
+ "once_cell_polyfill",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -102,15 +105,15 @@ checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
 [[package]]
 name = "autocfg"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
+checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
 [[package]]
 name = "bindgen"
-version = "0.70.1"
+version = "0.72.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f49d8fed880d473ea71efb9bf597651e77201bdd4893efe54c9e5d65ae04ce6f"
+checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
 dependencies = [
  "bitflags",
  "cexpr",
@@ -141,37 +144,61 @@ checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
 [[package]]
 name = "bitflags"
-version = "2.9.0"
+version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c8214115b7bf84099f1309324e63141d4c5d7cc26862f97a0a857dbefe165bd"
+checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
 
 [[package]]
 name = "bstr"
-version = "1.12.0"
+version = "1.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "234113d19d0d7d613b40e86fb654acf958910802bcceab913a4f9e7cda03b1a4"
+checksum = "63044e1ae8e69f3b5a92c736ca6269b8d12fa7efe39bf34ddb06d102cf0e2cab"
 dependencies = [
  "memchr",
  "serde",
 ]
 
+[[package]]
+name = "buf-trait"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21eaafc770e8c073d6c3facafe7617e774305d4954aa6351b9c452eb37ee17b4"
+dependencies = [
+ "zerocopy 0.7.35",
+]
+
 [[package]]
 name = "bumpalo"
-version = "3.17.0"
+version = "3.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
+checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
+
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.10.1"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
+checksum = "b35204fbdc0b3f4446b89fc1ac2cf84a8a68971995d0bf2e925ec7cd960f9cb3"
 
 [[package]]
 name = "bytesize"
-version = "1.3.3"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6bd91ee7b2422bcb158d90ef4d14f75ef67f340943fc4149891dcce8f8b972a3"
+
+[[package]]
+name = "byteyarn"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e93abca9e28e0a1b9877922aacb20576e05d4679ffa78c3d6dc22a26a216659"
+checksum = "b93e51d26468a15ea59f8525e0c13dc405db43e644a0b1e6d44346c72cf4cf7b"
+dependencies = [
+ "buf-trait",
+]
 
 [[package]]
 name = "cast"
@@ -179,12 +206,22 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
 
+[[package]]
+name = "castaway"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dec551ab6e7578819132c713a93c022a05d60159dc86e7a7050223577484c55a"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "cc"
-version = "1.2.21"
+version = "1.2.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8691782945451c1c383942c4874dbe63814f61cb57ef773cda2972682b7bb3c0"
+checksum = "90583009037521a116abf44494efecd645ba48b6622457080f080b85544e2215"
 dependencies = [
+ "find-msvc-tools",
  "shlex",
 ]
 
@@ -199,9 +236,9 @@ dependencies = [
 
 [[package]]
 name = "cfg-if"
-version = "1.0.0"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
 [[package]]
 name = "cfg_aliases"
@@ -211,16 +248,15 @@ checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
 [[package]]
 name = "chrono"
-version = "0.4.41"
+version = "0.4.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c469d952047f47f91b68d1cba3f10d63c11d73e4636f24f08daf0278abf01c4d"
+checksum = "145052bdd345b87320e369255277e3fb5152762ad123a901ef5c262dd38fe8d2"
 dependencies = [
- "android-tzdata",
  "iana-time-zone",
  "num-traits",
  "pure-rust-locales",
  "serde",
- "windows-link",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -272,9 +308,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.37"
+version = "4.5.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eccb054f56cbd38340b380d4a8e69ef1f02f1af43db2f0cc817a4774d80ae071"
+checksum = "c9e340e012a1bf4935f5282ed1436d1489548e8f72308207ea5df0e23d2d03f8"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -282,23 +318,23 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.37"
+version = "4.5.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "efd9466fac8543255d3b1fcad4762c5e116ffe808c8a3043d4263cd4fd4862a2"
+checksum = "d76b5d13eaa18c901fd2f7fca939fefe3a0727a953561fefdf3b2922b8569d00"
 dependencies = [
  "anstream",
  "anstyle",
  "clap_lex",
  "strsim",
  "unicase",
- "unicode-width 0.2.0",
+ "unicode-width 0.2.2",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "4.5.32"
+version = "4.5.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09176aae279615badda0765c0c0b3f6ed53f4709118af73cf4655d85d1530cd7"
+checksum = "2a0b5487afeab2deb2ff4e03a807ad1a03ac532ff5a2cee5d86884440c7f7671"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -308,21 +344,21 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.7.4"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f46ad14479a25103f283c0f10005961cf086d8dc42205bb44c46ac563475dca6"
+checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "colorchoice"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
+checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
 
 [[package]]
 name = "const_format"
-version = "0.2.34"
+version = "0.2.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "126f97965c8ad46d6d9163268ff28432e8f6a1196a55578867832e3049df63dd"
+checksum = "7faa7469a93a566e9ccc1c73fe783b4a65c274c5ace346038dca9c39fe0030ad"
 dependencies = [
  "const_format_proc_macros",
 ]
@@ -338,6 +374,15 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "convert_case"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "633458d4ef8c78b72454de2d54fd6ab2e60f9e02be22f3c6104cdc8a4e0fceb9"
+dependencies = [
+ "unicode-segmentation",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -346,34 +391,33 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "crc32fast"
-version = "1.4.2"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3"
+checksum = "9481c1c90cbf2ac953f07c8d4a58aa3945c425b7185c9154d67a65e4230da511"
 dependencies = [
  "cfg-if",
 ]
 
 [[package]]
 name = "criterion"
-version = "0.5.1"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2b12d017a929603d80db1831cd3a24082f8137ce19c69e6447f54f5fc8d692f"
+checksum = "4d883447757bb0ee46f233e9dc22eb84d93a9508c9b868687b274fc431d886bf"
 dependencies = [
+ "alloca",
  "anes",
  "cast",
  "ciborium",
  "clap",
  "criterion-plot",
- "is-terminal",
- "itertools 0.10.5",
+ "itertools 0.13.0",
  "num-traits",
- "once_cell",
  "oorandom",
+ "page_size",
  "plotters",
  "rayon",
  "regex",
  "serde",
- "serde_derive",
  "serde_json",
  "tinytemplate",
  "walkdir",
@@ -381,12 +425,12 @@ dependencies = [
 
 [[package]]
 name = "criterion-plot"
-version = "0.5.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b50826342786a51a89e2da3a28f1c32b06e387201bc2d19791f622c673706b1"
+checksum = "ed943f81ea2faa8dcecbbfa50164acf95d555afec96a27871663b300e387b2e4"
 dependencies = [
  "cast",
- "itertools 0.10.5",
+ "itertools 0.13.0",
 ]
 
 [[package]]
@@ -416,15 +460,17 @@ checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
 [[package]]
 name = "crossterm"
-version = "0.28.1"
+version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "829d955a0bb380ef178a640b91779e3987da38c9aea133b20614cfed8cdea9c6"
+checksum = "d8b9f2e4c67f833b660cdb0a3523065869fb35570177239812ed4c905aeff87b"
 dependencies = [
  "bitflags",
  "crossterm_winapi",
+ "derive_more",
+ "document-features",
  "mio",
  "parking_lot",
- "rustix 0.38.44",
+ "rustix 1.1.2",
  "signal-hook",
  "signal-hook-mio",
  "winapi",
@@ -441,38 +487,69 @@ dependencies = [
 
 [[package]]
 name = "crunchy"
-version = "0.2.3"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43da5946c66ffcc7745f48db692ffbb10a83bfe0afd96235c5c2a4fb23994929"
+checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
 
 [[package]]
 name = "deranged"
-version = "0.4.0"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c9e6a11ca8224451684bc0d7d5a7adbf8f2fd6887261a1cfc3c0432f9d4068e"
+checksum = "ececcb659e7ba858fb4f10388c250a7252eb0a27373f1a72b8748afdd248e587"
 dependencies = [
  "powerfmt",
 ]
 
+[[package]]
+name = "derive_more"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10b768e943bed7bf2cab53df09f4bc34bfd217cdb57d971e769874c9a6710618"
+dependencies = [
+ "derive_more-impl",
+]
+
+[[package]]
+name = "derive_more-impl"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d286bfdaf75e988b4a78e013ecd79c581e06399ab53fbacd2d916c2f904f30b"
+dependencies = [
+ "convert_case",
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "syn",
+]
+
 [[package]]
 name = "dirs"
-version = "5.0.1"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44c45a9d03d6676652bcb5e724c7e988de1acad23a711b5217ab9cbecbec2225"
+checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
 dependencies = [
  "dirs-sys",
 ]
 
 [[package]]
 name = "dirs-sys"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
+checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
 dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "document-features"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4b8a88685455ed29a21542a33abd9cb6510b6b129abadabdcef0f4c55bc8f61"
+dependencies = [
+ "litrs",
 ]
 
 [[package]]
@@ -482,16 +559,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
-name = "env_logger"
-version = "0.10.2"
+name = "env_filter"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cd405aab171cb85d6735e5c8d9db038c17d3ca007a4d2c25f337935c3d90580"
+checksum = "1bf3c259d255ca70051b30e2e95b5446cdb8949ac4cd22c0d7fd634d89f568e2"
 dependencies = [
- "humantime",
- "is-terminal",
  "log",
  "regex",
- "termcolor",
+]
+
+[[package]]
+name = "env_logger"
+version = "0.11.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c863f0904021b108aa8b2f55046443e6b1ebde8fd4a15c399893aae4fa069f"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "env_filter",
+ "jiff",
+ "log",
 ]
 
 [[package]]
@@ -502,29 +589,30 @@ checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
 name = "erased-serde"
-version = "0.4.6"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e004d887f51fcb9fef17317a2f3525c887d8aa3f4f50fed920816a688284a5b7"
+checksum = "89e8918065695684b2b0702da20382d5ae6065cf3327bc2d6436bd49a71ce9f3"
 dependencies = [
  "serde",
+ "serde_core",
  "typeid",
 ]
 
 [[package]]
 name = "errno"
-version = "0.3.11"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "976dd42dc7e85965fe702eb8164f21f450704bdde31faefd6471dba214cb594e"
+checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "fancy-regex"
-version = "0.14.0"
+version = "0.16.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e24cb5a94bcae1e5408b0effca5cd7172ea3c5755049c5f3af4cd283a165298"
+checksum = "998b056554fbe42e03ae0e152895cd1a7e1002aec800fdc6635d20270260c46f"
 dependencies = [
  "bit-set",
  "regex-automata",
@@ -537,11 +625,17 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
+[[package]]
+name = "find-msvc-tools"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a3076410a55c90011c298b04d0cfa770b00fa04e1e3c97d3f6c9de105a03844"
+
 [[package]]
 name = "flate2"
-version = "1.1.1"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ced92e76e966ca2fd84c8f7aa01a4aea65b0eb6648d72f7c8f3e2764a67fece"
+checksum = "bfe33edd8e85a12a67454e37f8c75e730830d83e313556ab9ebf9ee7fbeb3bfb"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
@@ -604,32 +698,32 @@ checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
 ]
 
 [[package]]
 name = "getrandom"
-version = "0.3.2"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73fea8450eea4bac3940448fb7ae50d91f034f941199fcd9d909a5a07aa455f0"
+checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
 dependencies = [
  "cfg-if",
  "libc",
  "r-efi",
- "wasi 0.14.2+wasi-0.2.4",
+ "wasip2",
 ]
 
 [[package]]
 name = "glob"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8d1add55171497b4705a648c6b583acafb01d58050a51727785f0b2c8e0a2b2"
+checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
 
 [[package]]
 name = "globset"
-version = "0.4.16"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54a1028dfc5f5df5da8a56a73e6c153c9a9708ec57232470703592a3f18e49f5"
+checksum = "52dfc19153a48bde0cbd630453615c8151bce3a5adfac7a0aebfbf0a1e1f57e3"
 dependencies = [
  "aho-corasick",
  "bstr",
@@ -640,19 +734,20 @@ dependencies = [
 
 [[package]]
 name = "half"
-version = "2.6.0"
+version = "2.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "459196ed295495a68f7d7fe1d84f6c4b7ff0e21fe3017b2f283c6fac3ad803c9"
+checksum = "6ea2d84b969582b4b1864a92dc5d27cd2b77b622a8d79306834f1be5ba20d84b"
 dependencies = [
  "cfg-if",
  "crunchy",
+ "zerocopy 0.8.31",
 ]
 
 [[package]]
 name = "hashbrown"
-version = "0.15.3"
+version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84b26c544d002229e640969970a2e74021aadf6e2f96372b9c58eff97de08eb3"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
  "allocator-api2",
  "equivalent",
@@ -660,16 +755,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "heck"
-version = "0.5.0"
+name = "hashbrown"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
 
 [[package]]
-name = "hermit-abi"
+name = "heck"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fbd780fe5cc30f81464441920d82ac8740e2e46b29a6fad543ddd075229ce37e"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "hex"
@@ -677,17 +772,11 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
-[[package]]
-name = "humantime"
-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b112acc8b3adf4b107a8ec20977da0273a8c386765a3ec0229bd500a1443f9f"
-
 [[package]]
 name = "iana-time-zone"
-version = "0.1.63"
+version = "0.1.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0c919e5debc312ad217002b8048a17b7d83f80703865bbfcfebb0458b0b27d8"
+checksum = "33e57f83510bb73707521ebaffa789ec8caf86f9657cad665b092b581d40e9fb"
 dependencies = [
  "android_system_properties",
  "core-foundation-sys",
@@ -695,7 +784,7 @@ dependencies = [
  "js-sys",
  "log",
  "wasm-bindgen",
- "windows-core 0.61.0",
+ "windows-core 0.62.2",
 ]
 
 [[package]]
@@ -709,9 +798,9 @@ dependencies = [
 
 [[package]]
 name = "ignore"
-version = "0.4.23"
+version = "0.4.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d89fd380afde86567dfba715db065673989d6253f42b88179abd3eae47bda4b"
+checksum = "d3d782a365a015e0f5c04902246139249abf769125006fbe7649e2ee88169b4a"
 dependencies = [
  "crossbeam-deque",
  "globset",
@@ -725,34 +814,23 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.9.0"
+version = "2.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
+checksum = "0ad4bb2b565bca0645f4d68c5c9af97fba094e9791da685bf83cb5f3ce74acf2"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.16.1",
 ]
 
 [[package]]
 name = "inventory"
-version = "0.3.20"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab08d7cd2c5897f2c949e5383ea7c7db03fb19130ffcfbf7eda795137ae3cb83"
+checksum = "bc61209c082fbeb19919bee74b176221b27223e27b65d781eb91af24eb1fb46e"
 dependencies = [
  "rustversion",
 ]
 
-[[package]]
-name = "is-terminal"
-version = "0.4.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e04d7f318608d35d4b61ddd75cbdaee86b023ebe2bd5a66ee0915f0bf93095a9"
-dependencies = [
- "hermit-abi",
- "libc",
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "is_ci"
 version = "1.2.0"
@@ -767,24 +845,24 @@ checksum = "1fe266d2e243c931d8190177f20bf7f24eed45e96f39e87dc49a27b32d12d407"
 
 [[package]]
 name = "is_terminal_polyfill"
-version = "1.70.1"
+version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
+checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
 
 [[package]]
 name = "itertools"
-version = "0.10.5"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
 dependencies = [
  "either",
 ]
 
 [[package]]
 name = "itertools"
-version = "0.13.0"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
 dependencies = [
  "either",
 ]
@@ -795,37 +873,73 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
+[[package]]
+name = "jiff"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49cce2b81f2098e7e3efc35bc2e0a6b7abec9d34128283d7a26fa8f32a6dbb35"
+dependencies = [
+ "jiff-static",
+ "log",
+ "portable-atomic",
+ "portable-atomic-util",
+ "serde_core",
+]
+
+[[package]]
+name = "jiff-static"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "980af8b43c3ad5d8d349ace167ec8170839f753a42d233ba19e08afe1850fa69"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "js-sys"
-version = "0.3.77"
+version = "0.3.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
+checksum = "464a3709c7f55f1f721e5389aa6ea4e3bc6aba669353300af094b29ffbdde1d8"
 dependencies = [
  "once_cell",
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "lean_string"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "962df00ba70ac8d5ca5c064e17e5c3d090c087fd8d21aa45096c716b169da514"
+dependencies = [
+ "castaway",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "libc"
-version = "0.2.172"
+version = "0.2.178"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d750af042f7ef4f724306de029d18836c26c1765a54a6a3f094cbd23a7267ffa"
+checksum = "37c93d8daa9d8a012fd8ab92f088405fb202ea0b6ab73ee2482ae66af4f42091"
 
 [[package]]
 name = "libloading"
-version = "0.8.6"
+version = "0.8.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc2f4eb4bc735547cfed7c0a4922cbd04a4655978c09b54f1f7b228750664c34"
+checksum = "d7c4b02199fee7c5d21a5ae7d8cfa79a6ef5bb2fc834d6e9058e89c825efdc55"
 dependencies = [
  "cfg-if",
- "windows-targets 0.52.6",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
 name = "libproc"
-version = "0.14.10"
+version = "0.14.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e78a09b56be5adbcad5aa1197371688dc6bb249a26da3bca2011ee2fb987ebfb"
+checksum = "a54ad7278b8bc5301d5ffd2a94251c004feb971feba96c971ea4063645990757"
 dependencies = [
  "bindgen",
  "errno",
@@ -834,9 +948,9 @@ dependencies = [
 
 [[package]]
 name = "libredox"
-version = "0.1.3"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+checksum = "df15f6eac291ed1cf25865b1ee60399f57e7c227e7f51bdbd4c5270396a9ed50"
 dependencies = [
  "bitflags",
  "libc",
@@ -850,25 +964,30 @@ checksum = "d26c52dbd32dccf2d10cac7725f8eae5296885fb5703b261f7d0a0739ec807ab"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.9.4"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
+
+[[package]]
+name = "litrs"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd945864f07fe9f5371a27ad7b52a172b4b499999f1d97574c9fa68373937e12"
+checksum = "11d3d7f243d5c5a8b9bb5d6dd2b1602c0cb0b9db1621bafc7ed66e35ff9fe092"
 
 [[package]]
 name = "lock_api"
-version = "0.4.12"
+version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
+checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
 dependencies = [
- "autocfg",
  "scopeguard",
 ]
 
 [[package]]
 name = "log"
-version = "0.4.27"
+version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
+checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
 [[package]]
 name = "lru"
@@ -876,32 +995,33 @@ version = "0.12.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "234cf4f4a04dc1f57e24b96cc0cd600cf2af460d4161ac5ecdd0af8e1f3b2a38"
 dependencies = [
- "hashbrown",
+ "hashbrown 0.15.5",
 ]
 
 [[package]]
 name = "lscolors"
-version = "0.17.0"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53304fff6ab1e597661eee37e42ea8c47a146fca280af902bb76bff8a896e523"
+checksum = "61183da5de8ba09a58e330d55e5ea796539d8443bd00fdeb863eac39724aa4ab"
 dependencies = [
+ "aho-corasick",
  "nu-ansi-term",
 ]
 
 [[package]]
 name = "mach2"
-version = "0.4.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19b955cdeb2a02b9117f121ce63aa52d08ade45de53e48fe6a38b39c10f6f709"
+checksum = "d640282b302c0bb0a2a8e0233ead9035e3bed871f0b7e81fe4a1ec829765db44"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "memchr"
-version = "2.7.4"
+version = "2.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
 
 [[package]]
 name = "miette"
@@ -939,30 +1059,31 @@ checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.8.8"
+version = "0.8.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
 dependencies = [
  "adler2",
+ "simd-adler32",
 ]
 
 [[package]]
 name = "mio"
-version = "1.0.3"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2886843bf800fba2e3377cff24abf6379b4c4d5c6681eaf9ea5b0d15090450bd"
+checksum = "a69bcab0ad47271a0234d9422b131806bf3968021e5dc9328caf2d4cd58557fc"
 dependencies = [
  "libc",
  "log",
- "wasi 0.11.0+wasi-snapshot-preview1",
- "windows-sys 0.52.0",
+ "wasi",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "nix"
-version = "0.29.0"
+version = "0.30.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
+checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -991,21 +1112,37 @@ dependencies = [
 
 [[package]]
 name = "nu-ansi-term"
-version = "0.50.1"
+version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4a28e057d01f97e61255210fcff094d74ed0466038633e95017f5beb68e4399"
+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.52.0",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "nu-cmd-base"
+version = "0.109.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2460ee389a43b935aa18ef5ed9fa8275bdf617e8c05eba7c2b82f92effd2132b"
+dependencies = [
+ "indexmap",
+ "miette",
+ "nu-engine",
+ "nu-parser",
+ "nu-path",
+ "nu-protocol",
 ]
 
 [[package]]
 name = "nu-cmd-lang"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e66adfeda88f8e27bcb25d068d9e6e8b3a94c2bf988a9c30e8e3b2045867aefe"
+checksum = "5b266674d87b816264f6aff8cca351e6ebb156f34faab45d7d728c2aba005495"
 dependencies = [
- "itertools 0.13.0",
+ "itertools 0.14.0",
+ "nu-cmd-base",
  "nu-engine",
+ "nu-experimental",
  "nu-parser",
  "nu-protocol",
  "nu-utils",
@@ -1014,9 +1151,9 @@ dependencies = [
 
 [[package]]
 name = "nu-derive-value"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fd0d8e358b6440d01fe4e617f180aea826bade72efb54f5dc1c22e0e8038b6f"
+checksum = "1465d2d3ada6004cb6689f269a08c70ba81056231e2b5392d1e0ccf5825f81cb"
 dependencies = [
  "heck",
  "proc-macro-error2",
@@ -1027,32 +1164,44 @@ dependencies = [
 
 [[package]]
 name = "nu-engine"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c2b01483e3d09460375f0c0da7a83b6dc26fb319ca09c55d0665087b2d587c7"
+checksum = "b3b777faf7c5180fe5d7f67d83c44fd14138d91f2938a36494ed6ac66b7160f3"
 dependencies = [
+ "fancy-regex",
  "log",
+ "nu-experimental",
  "nu-glob",
  "nu-path",
  "nu-protocol",
  "nu-utils",
 ]
 
+[[package]]
+name = "nu-experimental"
+version = "0.109.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73dd212a1afdad646a38c00579a0988264880aeb97fee820b349a28cdcc04df2"
+dependencies = [
+ "itertools 0.14.0",
+ "thiserror 2.0.17",
+]
+
 [[package]]
 name = "nu-glob"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "202ce25889336061efea24e69d4e0de7147c15fd9892cdd70533500d47db8364"
+checksum = "15aa2c17078926f14e393b4b708e69f228cb6fd4c81136839bde82772bdde1b5"
 
 [[package]]
 name = "nu-parser"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0591ef4d4989c1930863d9d17d8fd2d70b03ec2d9caeca067e9626e05c49d9"
+checksum = "237172636312c3566272511a00c1dc355202406c376e1546a45a33c65e81babe"
 dependencies = [
  "bytesize",
  "chrono",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "nu-engine",
  "nu-path",
@@ -1063,9 +1212,9 @@ dependencies = [
 
 [[package]]
 name = "nu-path"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41c68c7c06898a5c4c9f10038da63759661cb8ac8f301ce7d159173a595c8258"
+checksum = "dde9d8ba26f62c07176c0237a36f38ce964ab3a0dcfb6aab1feea7515d1c6594"
 dependencies = [
  "dirs",
  "omnipath",
@@ -1075,9 +1224,9 @@ dependencies = [
 
 [[package]]
 name = "nu-protocol"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab657b1947f1fad3c5052cb210fa311744736a4800a966ae21c4bc63de7c60ab"
+checksum = "038943300ca9de0924fef1c795a7dd16ffc67105629477cf163e8ee6bad95ea6"
 dependencies = [
  "bytes",
  "chrono",
@@ -1093,6 +1242,7 @@ dependencies = [
  "miette",
  "nix",
  "nu-derive-value",
+ "nu-experimental",
  "nu-glob",
  "nu-path",
  "nu-system",
@@ -1103,20 +1253,21 @@ dependencies = [
  "serde_json",
  "strum",
  "strum_macros",
- "thiserror 2.0.12",
+ "thiserror 2.0.17",
  "typetag",
  "web-time",
- "windows-sys 0.48.0",
+ "windows 0.62.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "nu-system"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f47094aaab4f1e3a86c3960400d82a50fcabde907f964ae095963ec95669577a"
+checksum = "46be734cc9b19e09a9665769e14360e13e6978490056ba5c8bfad7dd0537ea83"
 dependencies = [
  "chrono",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "libc",
  "libproc",
  "log",
@@ -1126,20 +1277,23 @@ dependencies = [
  "procfs",
  "sysinfo",
  "web-time",
- "windows 0.56.0",
+ "windows 0.62.2",
 ]
 
 [[package]]
 name = "nu-utils"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "327999b774d78b301a6b68c33d312a1a8047c59fb8971b6552ebf823251f1481"
+checksum = "3f8eb43c29cc5bce85f87defdadc2cca964fa434d808af37036a7cb78f3c68e9"
 dependencies = [
+ "byteyarn",
  "crossterm",
  "crossterm_winapi",
  "fancy-regex",
+ "lean_string",
  "log",
  "lscolors",
+ "memchr",
  "nix",
  "num-format",
  "serde",
@@ -1166,7 +1320,7 @@ dependencies = [
  "rayon",
  "rstest",
  "tempfile",
- "thiserror 2.0.12",
+ "thiserror 2.0.17",
 ]
 
 [[package]]
@@ -1205,9 +1359,9 @@ dependencies = [
 
 [[package]]
 name = "nuon"
-version = "0.104.0"
+version = "0.109.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ad155fee37ed58420483d38c40cd9bea88160e281e1d04c1592525c8f8da9a5"
+checksum = "f8c4f2e4460a6cf00e50cddf0840f954874d645be3af5196c5858c70c069d8c0"
 dependencies = [
  "nu-engine",
  "nu-parser",
@@ -1215,6 +1369,25 @@ dependencies = [
  "nu-utils",
 ]
 
+[[package]]
+name = "objc2-core-foundation"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a180dd8642fa45cdb7dd721cd4c11b1cadd4929ce112ebd8b9f5803cc79d536"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "objc2-io-kit"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33fafba39597d6dc1fb709123dfa8289d39406734be322956a69f0931c73bb15"
+dependencies = [
+ "libc",
+ "objc2-core-foundation",
+]
+
 [[package]]
 name = "omnipath"
 version = "0.1.6"
@@ -1227,6 +1400,12 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "once_cell_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
+
 [[package]]
 name = "oorandom"
 version = "11.1.5"
@@ -1241,25 +1420,35 @@ checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
 [[package]]
 name = "os_pipe"
-version = "1.2.1"
+version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ffd2b0a5634335b135d5728d84c5e0fd726954b87111f7506a61c502280d982"
+checksum = "7d8fae84b431384b68627d0f9b3b1245fcf9f46f6c0e3dc902e9dce64edd1967"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "owo-colors"
-version = "4.2.0"
+version = "4.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1036865bb9422d3300cf723f657c2851d0e9ab12567854b1f4eba3d77decf564"
+checksum = "9c6901729fa79e91a0913333229e9ca5dc725089d1c363b2f4b4760709dc4a52"
+
+[[package]]
+name = "page_size"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30d5b2194ed13191c1999ae0704b7839fb18384fa22e49b57eeaa97d79ce40da"
+dependencies = [
+ "libc",
+ "winapi",
+]
 
 [[package]]
 name = "parking_lot"
-version = "0.12.3"
+version = "0.12.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
+checksum = "93857453250e3077bd71ff98b6a65ea6621a19bb0f559a85248955ac12c45a1a"
 dependencies = [
  "lock_api",
  "parking_lot_core",
@@ -1267,15 +1456,15 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.9.10"
+version = "0.9.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
+checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
  "cfg-if",
  "libc",
  "redox_syscall",
  "smallvec",
- "windows-targets 0.52.6",
+ "windows-link 0.2.1",
 ]
 
 [[package]]
@@ -1318,6 +1507,21 @@ dependencies = [
  "plotters-backend",
 ]
 
+[[package]]
+name = "portable-atomic"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f84267b20a16ea918e43c6a88433c2d54fa145c92a811b5b047ccbe153674483"
+
+[[package]]
+name = "portable-atomic-util"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8a2f0d8d040d7848a709caf78912debcc3f33ee4b3cac47d73d1e1069e83507"
+dependencies = [
+ "portable-atomic",
+]
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -1326,9 +1530,9 @@ checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
 [[package]]
 name = "proc-macro-crate"
-version = "3.3.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "edce586971a4dfaa28950c6f18ed55e0406c1ab88bbce2c6f6293a7aaba73d35"
+checksum = "219cb19e96be00ab2e37d6e299658a0cfa83e52429179969b0f0121b4ac46983"
 dependencies = [
  "toml_edit",
 ]
@@ -1357,9 +1561,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.95"
+version = "1.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
+checksum = "5ee95bc4ef87b8d5ba32e8b7714ccc834865276eab0aed5c9958d00ec45f49e8"
 dependencies = [
  "unicode-ident",
 ]
@@ -1391,9 +1595,9 @@ dependencies = [
 
 [[package]]
 name = "pure-rust-locales"
-version = "0.8.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1190fd18ae6ce9e137184f207593877e70f39b015040156b1e05081cdfe3733a"
+checksum = "869675ad2d7541aea90c6d88c81f46a7f4ea9af8cd0395d38f11a95126998a0d"
 
 [[package]]
 name = "pwd"
@@ -1407,24 +1611,24 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.40"
+version = "1.0.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
+checksum = "a338cc41d27e6cc6dce6cefc13a0729dfbb81c262b1f519331575dd80ef3067f"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "r-efi"
-version = "5.2.0"
+version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
 [[package]]
 name = "rayon"
-version = "1.10.0"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
+checksum = "368f01d005bf8fd9b1206fb6fa653e6c4a81ceb1466406b81792d87c5677a58f"
 dependencies = [
  "either",
  "rayon-core",
@@ -1432,9 +1636,9 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.12.1"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
+checksum = "22e18b0f0062d30d4230b2e85ff77fdfe4326feb054b9783a3460d8435c8ab91"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-utils",
@@ -1442,38 +1646,38 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.11"
+version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2f103c6d277498fbceb16e84d317e2a400f160f46904d5f5410848c829511a3"
+checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
  "bitflags",
 ]
 
 [[package]]
 name = "redox_users"
-version = "0.4.6"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
 dependencies = [
  "getrandom 0.2.16",
  "libredox",
- "thiserror 1.0.69",
+ "thiserror 2.0.17",
 ]
 
 [[package]]
 name = "ref-cast"
-version = "1.0.24"
+version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a0ae411dbe946a674d89546582cea4ba2bb8defac896622d6496f14c23ba5cf"
+checksum = "f354300ae66f76f1c85c5f84693f0ce81d747e2c3f21a45fef496d89c960bf7d"
 dependencies = [
  "ref-cast-impl",
 ]
 
 [[package]]
 name = "ref-cast-impl"
-version = "1.0.24"
+version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1165225c21bff1f3bbce98f5a1f889949bc902d3575308cc7b0de30b4f6d27c7"
+checksum = "b7186006dcb21920990093f30e3dea63b7d6e977bf1256be20c3563a5db070da"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1482,9 +1686,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.11.1"
+version = "1.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+checksum = "843bc0191f75f3e22651ae5f1e72939ab2f72a4bc30fa80a066bd66edefc24d4"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1494,9 +1698,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.9"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
+checksum = "5276caf25ac86c8d810222b3dbb938e512c55c6831a10f3e6ed1c93b84041f1c"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1505,9 +1709,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.5"
+version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
+checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
 
 [[package]]
 name = "relative-path"
@@ -1517,21 +1721,20 @@ checksum = "ba39f3699c378cd8970968dcbff9c43159ea4cfbd88d43c00b22f2ef10a435d2"
 
 [[package]]
 name = "rstest"
-version = "0.25.0"
+version = "0.26.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fc39292f8613e913f7df8fa892b8944ceb47c247b78e1b1ae2f09e019be789d"
+checksum = "f5a3193c063baaa2a95a33f03035c8a72b83d97a54916055ba22d35ed3839d49"
 dependencies = [
  "futures-timer",
  "futures-util",
  "rstest_macros",
- "rustc_version",
 ]
 
 [[package]]
 name = "rstest_macros"
-version = "0.25.0"
+version = "0.26.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f168d99749d307be9de54d23fd226628d99768225ef08f6ffb52e0182a27746"
+checksum = "9c845311f0ff7951c5506121a9ad75aec44d083c31583b2ea5a30bcb0b0abba0"
 dependencies = [
  "cfg-if",
  "glob",
@@ -1547,9 +1750,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-hash"
-version = "1.1.0"
+version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+checksum = "357703d41365b4b27c590e3ed91eabb1b663f07c4c084095e60cbed4362dff0d"
 
 [[package]]
 name = "rustc_version"
@@ -1575,22 +1778,22 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "1.0.7"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c71e83d6afe7ff64890ec6b71d6a69bb8a610ab78ce364b3352876bb4c801266"
+checksum = "cd15f8a2c5551a84d56efdc1cd049089e409ac19a3072d5037a17fd70719ff3e"
 dependencies = [
  "bitflags",
  "errno",
  "libc",
- "linux-raw-sys 0.9.4",
- "windows-sys 0.59.0",
+ "linux-raw-sys 0.11.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "rustversion"
-version = "1.0.20"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eded382c5f5f786b989652c49544c4877d9f015cc22e145a5ea8ea66c2921cd2"
+checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
 
 [[package]]
 name = "ryu"
@@ -1615,24 +1818,34 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "semver"
-version = "1.0.26"
+version = "1.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56e6fa9c48d24d85fb3de5ad847117517440f6beceb7798af16b4a87d616b8d0"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
 
 [[package]]
 name = "serde"
-version = "1.0.219"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.219"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1641,21 +1854,22 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.140"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "20068b6e96dc6c9bd23e01df8827e6c7e1f2fddd43c21810382803c136b99373"
+checksum = "402a6f66d8c709116cf22f558eab210f5a50187f702eb4d7e5ef38d9a7f1c79c"
 dependencies = [
  "itoa",
  "memchr",
  "ryu",
  "serde",
+ "serde_core",
 ]
 
 [[package]]
 name = "shadow-rs"
-version = "1.1.1"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d5625ed609cf66d7e505e7d487aca815626dc4ebb6c0dd07637ca61a44651a6"
+checksum = "72d18183cef626bce22836103349c7050d73db799be0171386b80947d157ae32"
 dependencies = [
  "const_format",
  "is_debug",
@@ -1671,9 +1885,9 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "signal-hook"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8621587d4798caf8eb44879d42e56b9a93ea5dcd315a6487c357130095b62801"
+checksum = "d881a16cf4426aa584979d30bd82cb33429027e42122b169753d6ef1085ed6e2"
 dependencies = [
  "libc",
  "signal-hook-registry",
@@ -1681,9 +1895,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-mio"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34db1a06d485c9142248b7a054f034b349b212551f3dfd19c94d45a754a217cd"
+checksum = "b75a19a7a740b25bc7944bdee6172368f988763b744e3d4dfe753f6b4ece40cc"
 dependencies = [
  "libc",
  "mio",
@@ -1692,27 +1906,30 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.4.5"
+version = "1.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9203b8055f63a2a00e2f593bb0510367fe707d7ff1e5c872de2f537b339e5410"
+checksum = "7664a098b8e616bdfcc2dc0e9ac44eb231eedf41db4e9fe95d8d32ec728dedad"
 dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "simd-adler32"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e320a6c5ad31d271ad523dcf3ad13e2767ad8b1cb8f047f75a8aeaf8da139da2"
+
 [[package]]
 name = "slab"
-version = "0.4.9"
+version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f92a496fb766b417c996b9c5e57daf2f7ad3b0bebe1ccfca4856390e3d3bb67"
-dependencies = [
- "autocfg",
-]
+checksum = "7a2ae44ef20feb57a68b23d846850f861394c2e02dc425a50098ae8c90267589"
 
 [[package]]
 name = "smallvec"
-version = "1.15.0"
+version = "1.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8917285742e9f3e1683f0a9c4e6b57960b7314d0b08d30d1ecd426713ee2eee9"
+checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
 
 [[package]]
 name = "strip-ansi-escapes"
@@ -1737,14 +1954,13 @@ checksum = "8fec0f0aef304996cf250b31b5a10dee7980c85da9d759361292b8bca5a18f06"
 
 [[package]]
 name = "strum_macros"
-version = "0.26.4"
+version = "0.27.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c6bee85a5a24955dc440386795aa378cd9cf82acd5f764469152d2270e581be"
+checksum = "7695ce3845ea4b33927c055a39dc438a45b059f7c1b3d91d38d10355fb8cbca7"
 dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "rustversion",
  "syn",
 ]
 
@@ -1759,9 +1975,9 @@ dependencies = [
 
 [[package]]
 name = "supports-hyperlinks"
-version = "3.1.0"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "804f44ed3c63152de6a9f90acbea1a110441de43006ea51bcce8f436196a288b"
+checksum = "e396b6523b11ccb83120b115a0b7366de372751aa6edf19844dfb13a6af97e91"
 
 [[package]]
 name = "supports-unicode"
@@ -1771,9 +1987,9 @@ checksum = "b7401a30af6cb5818bb64852270bb722533397edcfc7344954a38f420819ece2"
 
 [[package]]
 name = "syn"
-version = "2.0.101"
+version = "2.0.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ce2b7fc941b3a24138a0a7cf8e858bfc6a992e7978a068a5c760deb0ed43caf"
+checksum = "390cc9a294ab71bdb1aa2e99d13be9c753cd2d7bd6560c77118597410c4d2e87"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1791,48 +2007,39 @@ dependencies = [
 
 [[package]]
 name = "sysinfo"
-version = "0.33.1"
+version = "0.37.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fc858248ea01b66f19d8e8a6d55f41deaf91e9d495246fd01368d99935c6c01"
+checksum = "16607d5caffd1c07ce073528f9ed972d88db15dd44023fa57142963be3feb11f"
 dependencies = [
- "core-foundation-sys",
  "libc",
  "memchr",
  "ntapi",
- "rayon",
- "windows 0.57.0",
+ "objc2-core-foundation",
+ "objc2-io-kit",
+ "windows 0.61.3",
 ]
 
 [[package]]
 name = "tempfile"
-version = "3.19.1"
+version = "3.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7437ac7763b9b123ccf33c338a5cc1bac6f69b45a136c19bdd8a65e3916435bf"
+checksum = "2d31c77bdf42a745371d260a26ca7163f1e0924b64afa0b688e61b5a9fa02f16"
 dependencies = [
  "fastrand",
- "getrandom 0.3.2",
+ "getrandom 0.3.4",
  "once_cell",
- "rustix 1.0.7",
- "windows-sys 0.59.0",
-]
-
-[[package]]
-name = "termcolor"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
-dependencies = [
- "winapi-util",
+ "rustix 1.1.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "terminal_size"
-version = "0.4.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45c6481c4829e4cc63825e62c49186a34538b7b2750b73b266581ffb612fb5ed"
+checksum = "60b8cb979cb11c32ce1603f8137b22262a9d131aaa5c37b5678025f22b8becd0"
 dependencies = [
- "rustix 1.0.7",
- "windows-sys 0.59.0",
+ "rustix 1.1.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -1842,7 +2049,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c13547615a44dc9c452a8a534638acdf07120d4b6847c8178705da06306a3057"
 dependencies = [
  "unicode-linebreak",
- "unicode-width 0.2.0",
+ "unicode-width 0.2.2",
 ]
 
 [[package]]
@@ -1856,11 +2063,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.12"
+version = "2.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
 dependencies = [
- "thiserror-impl 2.0.12",
+ "thiserror-impl 2.0.17",
 ]
 
 [[package]]
@@ -1876,9 +2083,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.12"
+version = "2.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1887,9 +2094,9 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.3.41"
+version = "0.3.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a7619e19bc266e0f9c5e6686659d394bc57973859340060a69221e57dbc0c40"
+checksum = "91e7d9e3bb61134e77bde20dd4825b97c010155709965fedf0f49bb138e52a9d"
 dependencies = [
  "deranged",
  "itoa",
@@ -1904,15 +2111,15 @@ dependencies = [
 
 [[package]]
 name = "time-core"
-version = "0.1.4"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9e9a38711f559d9e3ce1cdb06dd7c5b8ea546bc90052da6d06bb76da74bb07c"
+checksum = "40868e7c1d2f0b8d73e4a8c7f0ff63af4f6d19be117e90bd73eb1d62cf831c6b"
 
 [[package]]
 name = "time-macros"
-version = "0.2.22"
+version = "0.2.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3526739392ec93fd8b359c8e98514cb3e8e021beb4e5f597b00a0221f8ed8a49"
+checksum = "30cfb0125f12d9c277f35663a0a33f8c30190f4e4574868a330595412d34ebf3"
 dependencies = [
  "num-conv",
  "time-core",
@@ -1930,18 +2137,31 @@ dependencies = [
 
 [[package]]
 name = "toml_datetime"
-version = "0.6.9"
+version = "0.7.5+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3da5db5a963e24bc68be8b17b6fa82814bb22ee8660f192bb182771d498f09a3"
+checksum = "92e1cfed4a3038bc5a127e35a2d360f145e1f4b971b551a2ba5fd7aedf7e1347"
+dependencies = [
+ "serde_core",
+]
 
 [[package]]
 name = "toml_edit"
-version = "0.22.26"
+version = "0.23.10+spec-1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "310068873db2c5b3e7659d2cc35d21855dbafa50d1ce336397c666e3cb08137e"
+checksum = "84c8b9f757e028cee9fa244aea147aab2a9ec09d5325a9b01e0a49730c2b5269"
 dependencies = [
  "indexmap",
  "toml_datetime",
+ "toml_parser",
+ "winnow",
+]
+
+[[package]]
+name = "toml_parser"
+version = "1.0.6+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3198b4b0a8e11f09dd03e133c0280504d0801269e9afa46362ffde1cbeebf44"
+dependencies = [
  "winnow",
 ]
 
@@ -1953,9 +2173,9 @@ checksum = "bc7d623258602320d5c55d1bc22793b57daff0ec7efc270ea7d55ce1d5f5471c"
 
 [[package]]
 name = "typetag"
-version = "0.2.20"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73f22b40dd7bfe8c14230cf9702081366421890435b2d625fa92b4acc4c3de6f"
+checksum = "be2212c8a9b9bcfca32024de14998494cf9a5dfa59ea1b829de98bac374b86bf"
 dependencies = [
  "erased-serde",
  "inventory",
@@ -1966,9 +2186,9 @@ dependencies = [
 
 [[package]]
 name = "typetag-impl"
-version = "0.2.20"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35f5380909ffc31b4de4f4bdf96b877175a016aa2ca98cee39fcfd8c4d53d952"
+checksum = "27a7a9b72ba121f6f1f6c3632b85604cac41aedb5ddc70accbebb6cac83de846"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1977,15 +2197,15 @@ dependencies = [
 
 [[package]]
 name = "tz-rs"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1450bf2b99397e72070e7935c89facaa80092ac812502200375f1f7d33c71a1"
+checksum = "14eff19b8dc1ace5bf7e4d920b2628ae3837f422ff42210cb1567cbf68b5accf"
 
 [[package]]
 name = "tzdb"
-version = "0.7.2"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0be2ea5956f295449f47c0b825c5e109022ff1a6a53bb4f77682a87c2341fbf5"
+checksum = "56d4e985b6dda743ae7fd4140c28105316ffd75bc58258ee6cc12934e3eb7a0c"
 dependencies = [
  "iana-time-zone",
  "tz-rs",
@@ -1994,9 +2214,9 @@ dependencies = [
 
 [[package]]
 name = "tzdb_data"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c4c81d75033770e40fbd3643ce7472a1a9fd301f90b7139038228daf8af03ec"
+checksum = "42302a846dea7ab786f42dc5f519387069045acff793e1178d9368414168fe95"
 dependencies = [
  "tz-rs",
 ]
@@ -2009,9 +2229,9 @@ checksum = "75b844d17643ee918803943289730bec8aac480150456169e647ed0b576ba539"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.18"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
+checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
 
 [[package]]
 name = "unicode-linebreak"
@@ -2019,6 +2239,12 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b09c83c3c29d37506a3e260c08c03743a6bb66a9cd432c6934ab501a190571f"
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6ccf251212114b54433ec949fd6a7841275f9ada20dddd2f29e9ceea4501493"
+
 [[package]]
 name = "unicode-width"
 version = "0.1.14"
@@ -2027,9 +2253,9 @@ checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
 
 [[package]]
 name = "unicode-width"
-version = "0.2.0"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fc81956842c57dac11422a97c3b8195a1ff727f06e85c84ed2e8aa277c9a0fd"
+checksum = "b4ac048d71ede7ee76d585517add45da530660ef4390e49b098733c6e897f254"
 
 [[package]]
 name = "unicode-xid"
@@ -2064,50 +2290,37 @@ dependencies = [
 
 [[package]]
 name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
+version = "0.11.1+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
 [[package]]
-name = "wasi"
-version = "0.14.2+wasi-0.2.4"
+name = "wasip2"
+version = "1.0.1+wasi-0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
+checksum = "0562428422c63773dad2c345a1882263bbf4d65cf3f42e90921f787ef5ad58e7"
 dependencies = [
- "wit-bindgen-rt",
+ "wit-bindgen",
 ]
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.100"
+version = "0.2.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
+checksum = "0d759f433fa64a2d763d1340820e46e111a7a5ab75f993d1852d70b03dbb80fd"
 dependencies = [
  "cfg-if",
  "once_cell",
  "rustversion",
  "wasm-bindgen-macro",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
-dependencies = [
- "bumpalo",
- "log",
- "proc-macro2",
- "quote",
- "syn",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.100"
+version = "0.2.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
+checksum = "48cb0d2638f8baedbc542ed444afc0644a29166f1595371af4fecf8ce1e7eeb3"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -2115,31 +2328,31 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.100"
+version = "0.2.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
+checksum = "cefb59d5cd5f92d9dcf80e4683949f15ca4b511f4ac0a6e14d4e1ac60c6ecd40"
 dependencies = [
+ "bumpalo",
  "proc-macro2",
  "quote",
  "syn",
- "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.100"
+version = "0.2.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
+checksum = "cbc538057e648b67f72a982e708d485b2efa771e1ac05fec311f9f63e5800db4"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "web-sys"
-version = "0.3.77"
+version = "0.3.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33b6dd2ef9186f1f2072e409e99cd22a975331a6b3591b12c764e0e55c60d5d2"
+checksum = "9b32828d774c412041098d182a8b38b16ea816958e07cf40eec2bc080ae137ac"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -2173,11 +2386,11 @@ checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-util"
-version = "0.1.9"
+version = "0.1.11"
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-checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
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+ "windows-implement",
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+ "windows-link 0.2.1",
+ "windows-threading 0.2.1",
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 [[package]]
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@@ -2289,9 +2503,9 @@ dependencies = [
 
 [[package]]
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@@ -2299,89 +2513,98 @@ dependencies = [
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 [[package]]
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+ "windows-link 0.1.3",
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+ "windows-targets 0.53.5",
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 [[package]]
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- "windows_x86_64_gnu 0.48.5",
- "windows_x86_64_gnullvm 0.48.5",
- "windows_x86_64_msvc 0.48.5",
+ "windows-link 0.2.1",
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 [[package]]
@@ -2393,7 +2616,7 @@ dependencies = [
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  "windows_aarch64_msvc 0.52.6",
  "windows_i686_gnu 0.52.6",
- "windows_i686_gnullvm",
+ "windows_i686_gnullvm 0.52.6",
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@@ -2401,10 +2624,39 @@ dependencies = [
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 [[package]]
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+dependencies = [
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+ "windows_aarch64_gnullvm 0.53.1",
+ "windows_aarch64_msvc 0.53.1",
+ "windows_i686_gnu 0.53.1",
+ "windows_i686_gnullvm 0.53.1",
+ "windows_i686_msvc 0.53.1",
+ "windows_x86_64_gnu 0.53.1",
+ "windows_x86_64_gnullvm 0.53.1",
+ "windows_x86_64_msvc 0.53.1",
+]
+
+[[package]]
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-checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+checksum = "b66463ad2e0ea3bbf808b7f1d371311c80e115c0b71d60efc142cafbcfb057a6"
+dependencies = [
+ "windows-link 0.1.3",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3949bd5b99cafdf1c7ca86b43ca564028dfe27d66958f2470940f73d86d75b37"
+dependencies = [
+ "windows-link 0.2.1",
+]
 
 [[package]]
 name = "windows_aarch64_gnullvm"
@@ -2413,10 +2665,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "windows_aarch64_msvc"
-version = "0.48.5"
+name = "windows_aarch64_gnullvm"
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-checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"
 
 [[package]]
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@@ -2425,10 +2677,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "windows_i686_gnu"
-version = "0.48.5"
+name = "windows_aarch64_msvc"
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-checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
 
 [[package]]
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@@ -2436,6 +2688,12 @@ version = "0.52.6"
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 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
+
 [[package]]
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@@ -2443,10 +2701,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "windows_i686_msvc"
-version = "0.48.5"
+name = "windows_i686_gnullvm"
+version = "0.53.1"
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-checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
 
 [[package]]
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@@ -2455,10 +2713,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "windows_x86_64_gnu"
-version = "0.48.5"
+name = "windows_i686_msvc"
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-checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
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 [[package]]
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@@ -2467,10 +2725,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.48.5"
+name = "windows_x86_64_gnu"
+version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
@@ -2479,10 +2737,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "windows_x86_64_msvc"
-version = "0.48.5"
+name = "windows_x86_64_gnullvm"
+version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
 
 [[package]]
 name = "windows_x86_64_msvc"
@@ -2490,20 +2748,64 @@ version = "0.52.6"
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 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
+
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+checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
 dependencies = [
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 ]
 
 [[package]]
-name = "wit-bindgen-rt"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f17a85883d4e6d00e8a97c586de764dabcc06133f7f1d55dce5cdc070ad7fe59"
+
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+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
- "bitflags",
+ "byteorder",
+ "zerocopy-derive 0.7.35",
+]
+
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+dependencies = [
+ "zerocopy-derive 0.8.31",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 0d13171..fbd53e1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,22 +14,22 @@ categories = ["command-line-utilities"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = { version = "4.3.0", optional = true, features = ["unicode", "derive"] }
-env_logger = "0.10.0"
-ignore = "0.4"
-log = "0.4.17"
-nu-ansi-term = "0.50.1"
-nu-cmd-lang = "0.104.0"
-nu-parser = "0.104.0"
-nu-protocol = "0.104.0"
-nuon = "0.104.0"
-rayon = "1.10"
-thiserror = "2"
+clap = { version = "4.5.53", optional = true, features = ["unicode", "derive"] }
+env_logger = "0.11.8"
+ignore = "0.4.25"
+log = "0.4.29"
+nu-ansi-term = "0.50.3"
+nu-cmd-lang = "0.109.1"
+nu-parser = "0.109.1"
+nu-protocol = "0.109.1"
+nuon = "0.109.1"
+rayon = "1.11.0"
+thiserror = "2.0.17"
 
 [dev-dependencies]
-criterion = "0.5.1"
-rstest = "0.25"
-tempfile = "3"
+criterion = "0.8.1"
+rstest = "0.26.1"
+tempfile = "3.23.0"
 
 [features]
 default = ["bin"]
diff --git a/README.md b/README.md
index e8a3a79..8efedbd 100644
--- a/README.md
+++ b/README.md
@@ -13,78 +13,282 @@
 [discord-url]: https://discord.gg/NtAbbGn
 [ci-badge]: https://github.com/nushell/nufmt/actions/workflows/main.yml/badge.svg
 [ci-url]: https://github.com/nushell/nufmt/actions/workflows/main.yml
-[nushell-badge]: https://img.shields.io/badge/nushell-v0.104.0-green
+[nushell-badge]: https://img.shields.io/badge/nushell-v0.109.1-green
 [nushell-url]: https://crates.io/crates/nu
 
 </div>
 
 ## Table of contents
 
-- [Status](#status)
+- [Features](#features)
+- [Installation](#installation)
 - [Usage](#usage)
   - [Files](#files)
   - [Options](#options)
+  - [Configuration](#configuration)
+- [Supported Constructs](#supported-constructs)
+- [Testing](#testing)
+  - [Ground Truth Tests](#ground-truth-tests)
+  - [Running Tests](#running-tests)
 - [Contributing](#contributing)
 
-## Status
+## Features
 
-> [!IMPORTANT]
-> `nufmt` is in a pre-alpha state, not suitable for usage at all.
-> Do not use in productive nushell scripts!
+`nufmt` is a formatter for Nushell scripts, built entirely on Nushell's own parsing infrastructure (`nu-parser`, `nu-protocol`). It provides:
 
-Some of the outputs deletes comments, break the functionality of the script or doesn't format at all.
-
-To use the formatter, test it first and use it with caution!.
+- **AST-based formatting**: Uses Nushell's actual parser for accurate code understanding
+- **Idempotent output**: Running the formatter twice produces the same result
+- **Comment preservation**: Comments are preserved in their original positions
+- **Configurable**: Supports configuration via NUON files
+- **Fast**: Parallel file processing with Rayon
 
 ## Installation
 
-- `cargo install --git https://github.com/nushell/nufmt`
-- Using our bundled Nix flake.
+### From source
 
-## Usage
+```bash
+cargo install --git https://github.com/nushell/nufmt
+```
+
+### Using Cargo
+
+```bash
+cargo install nufmt
+```
+
+### Using Nix
+
+```bash
+nix run github:nushell/nufmt
+```
 
-If you still want to use it, or test it to contribute, this is the `--help`.
+## Usage
 
 ```text
-nufmt [OPTIONS] [FILES] ...
+nufmt [OPTIONS] [FILES]...
 ```
 
 ### Files
 
-`Files` are a list of files. It cannot be used combined with `--stdin`.
-You can format many files with one command!. For example:
+Format one or more Nushell files:
 
-```text
-nufmt my-file1.nu my-file2.nu my-file3.nu
+```bash
+# Format a single file
+nufmt script.nu
+
+# Format multiple files
+nufmt file1.nu file2.nu file3.nu
+
+# Format all .nu files in a directory
+nufmt src/
 ```
 
 ### Options
 
-- `--dry-run` if you just want to check files without formatting them. It cannot be combined with stdin.
-- `-s` or `--stdin` formats from `stdin`, returns to `stdout` as a String. It cannot be used combined with `files`.
-- `-c` or `--config` pass the config file path.
-  Sample:
+| Option | Short | Description |
+|--------|-------|-------------|
+| `--dry-run` | | Check files without modifying them. Returns exit code 1 if files would be reformatted. |
+| `--stdin` | | Read from stdin and write formatted output to stdout. Cannot be combined with file arguments. |
+| `--config` | `-c` | Path to a configuration file (NUON format). |
+| `--help` | `-h` | Show help and exit. |
+| `--version` | `-v` | Print version and exit. |
+
+### Examples
 
-  ```text
-  nufmt <files> --config my-config.json
-  ```
+```bash
+# Format files in place
+nufmt *.nu
+
+# Check if files need formatting (CI mode)
+nufmt --dry-run src/
+
+# Format stdin
+echo 'let x=1' | nufmt --stdin
+
+# Use custom config
+nufmt --config nufmt.nuon src/
+```
 
-  or
+### Configuration
 
-  ```text
-  nufmt --stdin <string> --config my-stdin-config.json
-  ```
-- `-h` or `--help` show help and exit
-- `-v` or `--version` prints the version and exit
+Create a `nufmt.nuon` file in your project root:
+
+```nuon
+{
+    indent: 4
+    line_length: 80
+    margin: 1
+    exclude: ["vendor/**", "target/**"]
+}
+```
+
+Configuration options:
+
+| Option | Type | Default | Description |
+|--------|------|---------|-------------|
+| `indent` | int | 4 | Number of spaces per indentation level |
+| `line_length` | int | 80 | Maximum line length (advisory) |
+| `margin` | int | 1 | Number of blank lines between top-level items |
+| `exclude` | list\<string\> | [] | Glob patterns for files to exclude |
 
 ### Exit codes
 
-``nufmt`` exits with the following status codes:
-- **0**: if ``nufmt`` terminates successfully, regardless of whether files or stdin were formatted.
-- **1** (only used in check mode): ``nufmt`` terminates successfully and at least one file would be formatted if check mode was off.
-- **2**: ``nufmt`` terminates abnormally due to invalid configuration, invalid CLI options, or an internal error.
+| Code | Description |
+|------|-------------|
+| 0 | Success (files formatted or already formatted) |
+| 1 | Dry-run mode: at least one file would be reformatted |
+| 2 | Error: invalid configuration, CLI options, or parse error |
+
+## Supported Constructs
+
+`nufmt` properly formats the following Nushell constructs:
+
+- ✅ Variable declarations (`let`, `mut`, `const`)
+- ✅ Function definitions (`def`, `def-env`, `export def`)
+- ✅ Control flow (`if`/`else`, `match`, `for`, `while`, `loop`)
+- ✅ Pipelines with proper spacing around `|`
+- ✅ Lists and records
+- ✅ Closures with parameters (`{|x| ... }`)
+- ✅ String interpolation (`$"Hello ($name)"`)
+- ✅ Modules (`module`, `use`, `export`)
+- ✅ Error handling (`try`/`catch`)
+- ✅ Comments (preserved in output)
+- ✅ Ranges (`1..10`, `1..2..10`)
+- ✅ Binary operations with proper spacing
+
+## How It Works
+
+Unlike tree-sitter based formatters, `nufmt` uses Nushell's own `nu-parser` crate to parse scripts into an AST. This ensures:
+
+1. **Accuracy**: The same parser that runs your scripts formats them
+2. **Compatibility**: Always in sync with Nushell's syntax
+3. **Error detection**: Invalid syntax is detected before formatting
+
+The formatter walks the AST and emits properly formatted code with consistent:
+- Indentation (configurable)
+- Spacing around operators and keywords
+- Brace placement for blocks
+- Comment placement
+
+## Testing
+
+`nufmt` has a comprehensive ground truth testing system that verifies the formatter produces correct output for all supported Nushell constructs.
+
+### Ground Truth Tests
+
+The testing system uses two sets of fixture files:
+
+- **Input files** (`tests/fixtures/input/`): Contain valid Nushell code with intentional formatting issues (extra spaces, inconsistent indentation, etc.)
+- **Expected files** (`tests/fixtures/expected/`): Contain the correctly formatted version of each input file
+
+When tests run, the formatter processes each input file and compares the output against the corresponding expected file. This ensures:
 
+1. The formatter produces consistent, correct output
+2. Formatting changes are intentional and reviewed
+3. Regressions are caught immediately
+
+**Important**: Input files should always differ from expected files. Input files represent "what not to do" - poorly formatted but valid Nushell code that the formatter should fix.
+
+### Test Categories
+
+Tests are organized by Nushell construct category:
+
+| Category | Constructs |
+|----------|------------|
+| `core` | `let_statement`, `mut_statement`, `const_statement`, `def_statement` |
+| `control_flow` | `if_else`, `for_loop`, `while_loop`, `loop_statement`, `match_expr`, `try_catch`, `break_continue`, `return_statement` |
+| `data_structures` | `list`, `record`, `table`, `nested_structures` |
+| `pipelines_expressions` | `pipeline`, `multiline_pipeline`, `closure`, `subexpression`, `binary_ops`, `range`, `cell_path`, `spread` |
+| `strings_interpolation` | `string_interpolation`, `comment` |
+| `types_values` | `value_with_unit`, `datetime`, `nothing`, `glob_pattern` |
+| `modules_imports` | `module`, `use_statement`, `export`, `source`, `hide`, `overlay` |
+| `commands_definitions` | `alias`, `extern`, `external_call` |
+| `special_constructs` | `do_block`, `where_clause`, `error_make` |
+
+### Running Tests
+
+#### Rust Tests
+
+```bash
+# Run all tests (unit + ground truth + idempotency)
+cargo test
+
+# Run only ground truth tests
+cargo test --test ground_truth
+
+# Run with verbose output
+cargo test -- --nocapture
+```
+
+#### Nushell Test Runner
+
+A Nushell script (`tests/run_ground_truth_tests.nu`) provides a more interactive testing experience:
+
+```bash
+# Build the release binary first
+cargo build --release
+
+# Run all tests
+nu tests/run_ground_truth_tests.nu
+
+# Run with verbose output (show diffs on failure)
+nu tests/run_ground_truth_tests.nu --verbose
+
+# Run only ground truth tests (skip idempotency)
+nu tests/run_ground_truth_tests.nu --ground-truth
+
+# Run only idempotency tests
+nu tests/run_ground_truth_tests.nu --idempotency
+
+# Run tests for a specific category
+nu tests/run_ground_truth_tests.nu --category control_flow
+
+# Run a single test
+nu tests/run_ground_truth_tests.nu --test let_statement
+
+# List all available tests
+nu tests/run_ground_truth_tests.nu --list
+
+# List available categories
+nu tests/run_ground_truth_tests.nu --list-categories
+
+# Check which test files exist
+nu tests/run_ground_truth_tests.nu --check-files
+```
+
+### Adding New Tests
+
+To add a test for a new construct:
+
+1. Create an input file at `tests/fixtures/input/<construct_name>.nu` with poorly-formatted but valid Nushell code
+2. Create an expected file at `tests/fixtures/expected/<construct_name>.nu` with the correctly formatted version
+3. Add the construct name to the appropriate category in `tests/run_ground_truth_tests.nu`
+4. Run the tests to verify
+
+Example input file (`tests/fixtures/input/my_construct.nu`):
+```nu
+let x  =  1
+let y   =   2
+```
+
+Example expected file (`tests/fixtures/expected/my_construct.nu`):
+```nu
+let x = 1
+let y = 2
+```
 
 ## Contributing
 
-We have a [contribution guide](docs/CONTRIBUTING.md). If you still have doubts, you can mention @`AucaCoyan` who is active on this repo.
+Contributions are welcome! Please see our [contribution guide](docs/CONTRIBUTING.md).
+
+### Reporting issues
+
+If you encounter formatting issues, please:
+
+1. Check if the script is valid Nushell syntax
+2. Provide a minimal reproduction case
+3. Include your `nufmt` version and Nushell version
+
+## License
+
+MIT License - see [LICENSE](LICENSE) for details.
diff --git a/benches/example.nu b/benches/example.nu
index d53c23b..a34a61d 100644
--- a/benches/example.nu
+++ b/benches/example.nu
@@ -1,888 +1,571 @@
-alias ll = ls -l
-
-
-[[status]; [UP] [UP]] | all {|el| $el.status == UP }
-[foo bar 2 baz] | all {|| ($in | describe) == 'string' }
-[0 2 4 6] | enumerate | all {|i| $i.item == $i.index * 2 }
-let cond = {|el| ($el mod 2) == 0 }; [2 4 6 8] | all $cond
-
-
-ansi green
-ansi reset
-$'(ansi red_bold)Hello(ansi reset) (ansi green_dimmed)Nu(ansi reset) (ansi purple_italic)World(ansi reset)'
-$'(ansi rb)Hello(ansi reset) (ansi gd)Nu(ansi reset) (ansi pi)World(ansi reset)'
-$"(ansi -e '3;93;41m')Hello(ansi reset)"  # italic bright yellow on red background
-let bold_blue_on_red = {  # `fg`, `bg`, `attr` are the acceptable keys, all other keys are considered invalid and will throw errors.
-        fg: '#0000ff'
-        bg: '#ff0000'
-        attr: b
-    }
-    $"(ansi -e $bold_blue_on_red)Hello Nu World(ansi reset)"
-
-
-'Hello, Nushell! This is a gradient.' | ansi gradient --fgstart '0x40c9ff' --fgend '0xe81cff'
-'Hello, Nushell! This is a gradient.' | ansi gradient --fgstart '0x40c9ff' --fgend '0xe81cff' --bgstart '0xe81cff' --bgend '0x40c9ff'
-'Hello, Nushell! This is a gradient.' | ansi gradient --fgstart '0x40c9ff'
-'Hello, Nushell! This is a gradient.' | ansi gradient --fgend '0xe81cff'
-
-
-'file:///file.txt' | ansi link --text 'Open Me!'
-'https://www.nushell.sh/' | ansi link
-[[url text]; [https://example.com Text]] | ansi link url
-
-
-$'(ansi green)(ansi cursor_on)hello' | ansi strip
-
-
-[[status]; [UP] [DOWN] [UP]] | any {|el| $el.status == DOWN }
-[1 2 3 4] | any {|| ($in | describe) == 'string' }
-[9 8 7 6] | enumerate | any {|i| $i.item == $i.index * 2 }
-let cond = {|e| $e mod 2 == 1 }; [2 4 1 6 8] | any $cond
-
-
-[0,1,2,3] | append 4
-[0,1] | append [2,3,4]
-[0,1] | append [2,nu,4,shell]
-
-
-ast 'hello'
-ast 'ls | where name =~ README'
-ast 'for x in 1..10 { echo $x '
-
-
-
-
-2 | bits and 2
-[4 3 2] | bits and 2
-
-
-[4 3 2] | bits not
-[4 3 2] | bits not -n '2'
-[4 3 2] | bits not -s
-
-
-2 | bits or 6
-[8 3 2] | bits or 2
-
-
-17 | bits rol 2
-[5 3 2] | bits rol 2
-
-
-17 | bits ror 60
-[15 33 92] | bits ror 2 -n '1'
-
-
-2 | bits shl 7
-2 | bits shl 7 -n '1'
-0x7F | bits shl 1 -s
-[5 3 2] | bits shl 2
-
-
-8 | bits shr 2
-[15 35 2] | bits shr 2
-
-
-2 | bits xor 2
-[8 3 2] | bits xor 2
-
-
-loop { break }
-
-
-
-
-0x[1F FF AA AA] | bytes add 0x[AA]
-0x[1F FF AA AA] | bytes add 0x[AA BB] -i 1
-0x[FF AA AA] | bytes add 0x[11] -e
-0x[FF AA BB] | bytes add 0x[11 22 33] -e -i 1
-
-
- 0x[33 44 55 10 01 13] | bytes at 3..<4
- 0x[33 44 55 10 01 13] | bytes at 3..6
- 0x[33 44 55 10 01 13] | bytes at 3..
- 0x[33 44 55 10 01 13] | bytes at ..<4
- [[ColA ColB ColC]; [0x[11 12 13] 0x[14 15 16] 0x[17 18 19]]] | bytes at 1.. ColB ColC
-
-
-bytes build 0x[01 02] 0x[03] 0x[04]
-
-
-[0x[11] 0x[13 15]] | bytes collect
-[0x[11] 0x[33] 0x[44]] | bytes collect 0x[01]
-
-
-0x[1F FF AA AA] | bytes ends-with 0x[AA]
-0x[1F FF AA AA] | bytes ends-with 0x[FF AA AA]
-0x[1F FF AA AA] | bytes ends-with 0x[11]
-
-
- 0x[33 44 55 10 01 13 44 55] | bytes index-of 0x[44 55]
- 0x[33 44 55 10 01 13 44 55] | bytes index-of -e 0x[44 55]
- 0x[33 44 55 10 01 33 44 33 44] | bytes index-of -a 0x[33 44]
- 0x[33 44 55 10 01 33 44 33 44] | bytes index-of -a -e 0x[33 44]
- [[ColA ColB ColC]; [0x[11 12 13] 0x[14 15 16] 0x[17 18 19]]] | bytes index-of 0x[11] ColA ColC
-
-
-0x[1F FF AA AB] | bytes length
-[0x[1F FF AA AB] 0x[1F]] | bytes length
-
-
-0x[10 AA FF AA FF] | bytes remove 0x[10 AA]
-0x[10 AA 10 BB 10] | bytes remove -a 0x[10]
-0x[10 AA 10 BB CC AA 10] | bytes remove -e 0x[10]
-[[ColA ColB ColC]; [0x[11 12 13] 0x[14 15 16] 0x[17 18 19]]] | bytes remove 0x[11] ColA ColC
-
-
-0x[10 AA FF AA FF] | bytes replace 0x[10 AA] 0x[FF]
-0x[10 AA 10 BB 10] | bytes replace -a 0x[10] 0x[A0]
-[[ColA ColB ColC]; [0x[11 12 13] 0x[14 15 16] 0x[17 18 19]]] | bytes replace -a 0x[11] 0x[13] ColA ColC
-
-
-0x[1F FF AA AA] | bytes reverse
-0x[FF AA AA] | bytes reverse
-
-
-0x[1F FF AA AA] | bytes starts-with 0x[1F FF AA]
-0x[1F FF AA AA] | bytes starts-with 0x[1F]
-0x[1F FF AA AA] | bytes starts-with 0x[11]
-
-
-cal
-cal --full-year 2012
-cal --week-start monday
-
-
-cd ~
-cd d/s/9
-cd -
-
-
-char newline
-char --list
-(char prompt) + (char newline) + (char hamburger)
-char -u 1f378
-char -i (0x60 + 1) (0x60 + 2)
-char -u 1F468 200D 1F466 200D 1F466
-
-
-clear
-
-
-[1 2 3] | collect { |x| $x.1 }
-
-
-{ acronym:PWD, meaning:'Print Working Directory' } | columns
-[[name,age,grade]; [bill,20,a]] | columns
-[[name,age,grade]; [bill,20,a]] | columns | first
-[[name,age,grade]; [bill,20,a]] | columns | select 1
-
-
-
-
-[["Hello" "World"]; [null 3]] | compact Hello
-[["Hello" "World"]; [null 3]] | compact World
-[1, null, 2] | compact
-
-
-^external arg1 | complete
-do { ^external arg1 } | complete
-
-
-
-
-config env
-
-
-config nu
-
-
-config reset
-
-
-const x = 10
-const x = { a: 10, b: 20 }
-
-
-for i in 1..10 { if $i == 5 { continue }; print $i }
-
-
-cp myfile dir_b
-cp -r dir_a dir_b
-cp -r -v dir_a dir_b
-cp *.txt dir_a
-
-
-
-
-"2021-10-22 20:00:12 +01:00" | date format
-date now | date format "%Y-%m-%d %H:%M:%S"
-date now | date format "%Y-%m-%d %H:%M:%S"
-"2021-10-22 20:00:12 +01:00" | date format "%Y-%m-%d"
-
-
-"2021-10-22 20:00:12 +01:00" | date humanize
-
-
-date list-timezone | where timezone =~ Shanghai
-
-
-date now | date format "%Y-%m-%d %H:%M:%S"
-(date now) - 2019-05-01
-(date now) - 2019-05-01T04:12:05.20+08:00
-date now | debug
-
-
-date to-record
-date now | date to-record
-'2020-04-12T22:10:57.123+02:00' | date to-record
-
-
-date to-table
-date now | date to-table
-2020-04-12T22:10:57.000000789+02:00 | date to-table
-
-
-date now | date to-timezone '+0500'
-date now | date to-timezone local
-date now | date to-timezone US/Hawaii
-"2020-10-10 10:00:00 +02:00" | date to-timezone "+0500"
-
-
-'hello' | debug
-['hello'] | debug
-[[version patch]; ['0.1.0' false] ['0.1.1' true] ['0.2.0' false]] | debug
-
-
-^cat myfile.q | decode utf-8
-0x[00 53 00 6F 00 6D 00 65 00 20 00 44 00 61 00 74 00 61] | decode utf-16be
-
-
-'U29tZSBEYXRh' | decode base64
-'U29tZSBEYXRh' | decode base64 --binary
-
-
-'0102030A0a0B' | decode hex
-'01 02  03 0A 0a 0B' | decode hex
-
-
-def say-hi [] { echo 'hi' }; say-hi
-def say-sth [sth: string] { echo $sth }; say-sth hi
-
-
-def-env foo [] { let-env BAR = "BAZ" }; foo; $env.BAR
-
-
-ls -la | default 'nothing' target 
-$env | get -i MY_ENV | default 'abc'
-[1, 2, null, 4] | default 3
-
-
-'hello' | describe
-
-
-'a b c' | detect columns -n
-$'c1 c2 c3(char nl)a b c' | detect columns
-
-
-[[a b]; [1 2] [1 4] [2 6] [2 4]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg [
-        (dfr col b | dfr min | dfr as "b_min")
-        (dfr col b | dfr max | dfr as "b_max")
-        (dfr col b | dfr sum | dfr as "b_sum")
-     ]
-[[a b]; [1 2] [1 4] [2 6] [2 4]]
-    | dfr into-lazy
-    | dfr group-by a
-    | dfr agg [
-        (dfr col b | dfr min | dfr as "b_min")
-        (dfr col b | dfr max | dfr as "b_max")
-        (dfr col b | dfr sum | dfr as "b_sum")
-     ]
-    | dfr collect
-
-
-
-
-
-[false false false] | dfr into-df | dfr all-false
-let s = ([5 6 2 10] | dfr into-df);
-    let res = ($s > 9);
-    $res | dfr all-false
-
-
-[true true true] | dfr into-df | dfr all-true
-let s = ([5 6 2 8] | dfr into-df);
-    let res = ($s > 9);
-    $res | dfr all-true
-
-
-let a = ([[a b]; [1 2] [3 4]] | dfr into-df);
-    $a | dfr append $a
-let a = ([[a b]; [1 2] [3 4]] | dfr into-df);
-    $a | dfr append $a --col
-
-
-[1 3 2] | dfr into-df | dfr arg-max
-
-
-[1 3 2] | dfr into-df | dfr arg-min
-
-
-[1 2 2 3 3] | dfr into-df | dfr arg-sort
-[1 2 2 3 3] | dfr into-df | dfr arg-sort -r
-
-
-[false true false] | dfr into-df | dfr arg-true
-
-
-[1 2 2 3 3] | dfr into-df | dfr arg-unique
-
-
-let df = ([[a b]; [one 1] [two 2] [three 3]] | dfr into-df);
-    $df | dfr select (dfr arg-where ((dfr col b) >= 2) | dfr as b_arg)
-
-
-dfr col a | dfr as new_a | dfr into-nu
-
-
-["2021-12-30" "2021-12-31"] | dfr into-df | dfr as-datetime "%Y-%m-%d"
-
-
-["2021-12-30 00:00:00" "2021-12-31 00:00:00"] | dfr into-df | dfr as-datetime "%Y-%m-%d %H:%M:%S"
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr reverse | dfr cache
-
-
-dfr col a | dfr into-nu
-
-
-[[a b]; [1 2] [3 4]] | dfr into-lazy | dfr collect
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr columns
-
-
-let df = ([[a b c]; [one two 1] [three four 2]] | dfr into-df);
-    $df | dfr with-column ((dfr concat-str "-" [(dfr col a) (dfr col b) ((dfr col c) * 2)]) | dfr as concat)
-
-
-let other = ([za xs cd] | dfr into-df);
-    [abc abc abc] | dfr into-df | dfr concatenate $other
-
-
-[abc acb acb] | dfr into-df | dfr contains ab
-
-
-
-
-
-let s = ([1 1 0 0 3 3 4] | dfr into-df);
-    ($s / $s) | dfr count-null
-
-
-[1 2 3 4 5] | dfr into-df | dfr cumulative sum
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr drop a
-
-
-[[a b]; [1 2] [3 4] [1 2]] | dfr into-df | dfr drop-duplicates
-
-
-let df = ([[a b]; [1 2] [3 0] [1 2]] | dfr into-df);
-    let res = ($df.b / $df.b);
-    let a = ($df | dfr with-column $res --name res);
-    $a | dfr drop-nulls
-let s = ([1 2 0 0 3 4] | dfr into-df);
-    ($s / $s) | dfr drop-nulls
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr dtypes
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr dummies
-[1 2 2 3 3] | dfr into-df | dfr dummies
-
-
-
-
-
-(dfr col a) > 2) | dfr expr-not
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr fetch 2
-
-
-[1 2 NaN 3 NaN] | dfr into-df | dfr fill-nan 0
-[[a b]; [0.2 1] [0.1 NaN]] | dfr into-df | dfr fill-nan 0
-
-
-[1 2 2 3 3] | dfr into-df | dfr shift 2 | dfr fill-null 0
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr filter ((dfr col a) >= 4)
-
-
-let mask = ([true false] | dfr into-df);
-    [[a b]; [1 2] [3 4]] | dfr into-df | dfr filter-with $mask
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr filter-with ((dfr col a) > 1)
-
-
-dfr col a | dfr first
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr first
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr first 2
-
-
-
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr get a
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+(
+    (
+        ls -l [
+            [status]
+        ] | all {|el| $el.status == UP } [foo, bar, 2, baz] | all {|| ($in | describe) == 'string' } [0, 2, 4, 6] | enumerate | all {|i| $i.item == $i.index * 2 } let cond = {|el| ($el mod 2) == 0 }
+        [2, 4, 6, 8] | all $cond
+        ansi green
+        ansi reset
+        $'(ansi red_bold)Hello(ansi reset) (ansi green_dimmed)Nu(ansi reset) (ansi purple_italic)World(ansi reset)'
+        $'(ansi rb)Hello(ansi reset) (ansi gd)Nu(ansi reset) (ansi pi)World(ansi reset)'
+        $"(ansi -e '3;93;41m')Hello(ansi reset)" # italic bright yellow on red background
+        let bold_blue_on_red = {fg: '#0000ff', bg: '#ff0000', attr: b}
+        $"(ansi -e $bold_blue_on_red)Hello Nu World(ansi reset)"
+        'Hello, Nushell! This is a gradient.' | ansi gradient --fgstart '0x40c9ff' --fgend '0xe81cff'
+        'Hello, Nushell! This is a gradient.' | ansi gradient --fgstart '0x40c9ff' --fgend '0xe81cff' --bgstart '0xe81cff' --bgend '0x40c9ff'
+        'Hello, Nushell! This is a gradient.' | ansi gradient --fgstart '0x40c9ff'
+        'Hello, Nushell! This is a gradient.' | ansi gradient --fgend '0xe81cff'
+        'file:///file.txt' | ansi link --text 'Open Me!'
+        'https://www.nushell.sh/' | ansi link
+        [[url, text]; [https://example.com, Text]] | ansi link url
+        $'(ansi green)(ansi cursor_on)hello' | ansi strip
+        [[status]; [UP], [DOWN], [UP]] | any {|el| $el.status == DOWN }
+        [1, 2, 3, 4] | any {|| ($in | describe) == 'string' }
+        [9, 8, 7, 6] | enumerate | any {|i| $i.item == $i.index * 2 }
+        let cond = {|e| $e mod 2 == 1 }
+        [2, 4, 1, 6, 8] | any $cond
+        [0, 1, 2, 3] | append 4
+        [0, 1] | append [2, 3, 4]
+        [0, 1] | append [2, nu, 4, shell]
+        ast 'hello'
+        ast 'ls | where name =~ README'
+        ast 'for x in 1..10 { echo $x '
+        2 | bits and 2
+        [4, 3, 2] | bits and 2
+        [4, 3, 2] | bits not
+        [4, 3, 2] | bits not -n '2'
+        [4, 3, 2] | bits not -s
+        2 | bits or 6
+        [8, 3, 2] | bits or 2
+        17 | bits rol 2
+        [5, 3, 2] | bits rol 2
+        17 | bits ror 60
+        [15, 33, 92] | bits ror 2 -n '1'
+        2 | bits shl 7
+        2 | bits shl 7 -n '1'
+        0x7F | bits shl 1 -s
+        [5, 3, 2] | bits shl 2
+        8 | bits shr 2
+        [15, 35, 2] | bits shr 2
+        2 | bits xor 2
+        [8, 3, 2] | bits xor 2
+        loop { break }
+        0x[1F FF AA AA] | bytes add 0x[AA]
+        0x[1F FF AA AA] | bytes add 0x[AA BB] -i 1
+        0x[FF AA AA] | bytes add 0x[11] -e
+        0x[FF AA BB] | bytes add 0x[11 22 33] -e -i 1
+        0x[33 44 55 10 01 13] | bytes at 3..<4
+        0x[33 44 55 10 01 13] | bytes at 3..6
+        0x[33 44 55 10 01 13] | bytes at 3..
+        0x[33 44 55 10 01 13] | bytes at ..<4
+        [[ColA, ColB, ColC]; [0x[11 12 13], 0x[14 15 16], 0x[17 18 19]]] | bytes at 1.. ColB ColC
+        bytes build 0x[01 02] 0x[03] 0x[04]
+        [
+            0x[11]
+            0x[13 15]
+        ] | bytes collect
+        [
+            0x[11]
+            0x[33]
+            0x[44]
+        ] | bytes collect 0x[01]
+        0x[1F FF AA AA] | bytes ends-with 0x[AA]
+        0x[1F FF AA AA] | bytes ends-with 0x[FF AA AA]
+        0x[1F FF AA AA] | bytes ends-with 0x[11]
+        0x[33 44 55 10 01 13 44 55] | bytes index-of 0x[44 55]
+        0x[33 44 55 10 01 13 44 55] | bytes index-of -e 0x[44 55]
+        0x[33 44 55 10 01 33 44 33 44] | bytes index-of -a 0x[33 44]
+        0x[33 44 55 10 01 33 44 33 44] | bytes index-of -a -e 0x[33 44]
+        [[ColA, ColB, ColC]; [0x[11 12 13], 0x[14 15 16], 0x[17 18 19]]] | bytes index-of 0x[11] ColA ColC
+        0x[1F FF AA AB] | bytes length
+        [
+            0x[1F FF AA AB]
+            0x[1F]
+        ] | bytes length
+        0x[10 AA FF AA FF] | bytes remove 0x[10 AA]
+        0x[10 AA 10 BB 10] | bytes remove -a 0x[10]
+        0x[10 AA 10 BB CC AA 10] | bytes remove -e 0x[10]
+        [[ColA, ColB, ColC]; [0x[11 12 13], 0x[14 15 16], 0x[17 18 19]]] | bytes remove 0x[11] ColA ColC
+        0x[10 AA FF AA FF] | bytes replace 0x[10 AA] 0x[FF]
+        0x[10 AA 10 BB 10] | bytes replace -a 0x[10] 0x[A0]
+        [[ColA, ColB, ColC]; [0x[11 12 13], 0x[14 15 16], 0x[17 18 19]]] | bytes replace -a 0x[11] 0x[13] ColA ColC
+        0x[1F FF AA AA] | bytes reverse
+        0x[FF AA AA] | bytes reverse
+        0x[1F FF AA AA] | bytes starts-with 0x[1F FF AA]
+        0x[1F FF AA AA] | bytes starts-with 0x[1F]
+        0x[1F FF AA AA] | bytes starts-with 0x[11]
+        cal
+        cal --full-year 2012
+        cal --week-start monday
+        cd ~
+        cd d/s/9
+        cd -
+        char newline
+        char --list
+        (char prompt) + (char newline) + (char hamburger)
+        char -u 1f378
+        char -i (0x60 + 1) (0x60 + 2)
+        char -u 1F468 200D 1F466 200D 1F466
+        clear
+        [1, 2, 3] | collect {||
+            x | $x.1
+        }
+        {acronym: PWD, meaning: 'Print Working Directory'} | columns
+        [[name, age, grade]; [bill, 20, a]] | columns
+        [[name, age, grade]; [bill, 20, a]] | columns | first
+        [[name, age, grade]; [bill, 20, a]] | columns | select 1
+        [["Hello", "World"]; [null, 3]] | compact Hello
+        [["Hello", "World"]; [null, 3]] | compact World
+        [1, null, 2] | compact
+        external arg1 | complete
+        do { external arg1 } | complete
+        config env
+        config nu
+        config reset
+        const x = (10)
+        const x = ({a: 10, b: 20})
+        for i in 1..10 {
+            if $i == 5 { continue }
+            print $i
+        }
+        cp myfile dir_b
+        cp -r dir_a dir_b
+        cp -r -v dir_a dir_b
+        cp *.txt dir_a
+        "2021-10-22 20:00:12 +01:00" | date format
+        date now | date format "%Y-%m-%d %H:%M:%S"
+        date now | date format "%Y-%m-%d %H:%M:%S"
+        "2021-10-22 20:00:12 +01:00" | date format "%Y-%m-%d"
+        "2021-10-22 20:00:12 +01:00" | date humanize
+        date list-timezone | where timezone =~ Shanghai
+        date now | date format "%Y-%m-%d %H:%M:%S"
+        (date now) - 2019-05-01
+        (date now) - 2019-05-01T04:12:05.20+08:00
+        date now | debug
+        date to-record
+        date now | date to-record
+        '2020-04-12T22:10:57.123+02:00' | date to-record
+        date to-table
+        date now | date to-table
+        2020-04-12T22:10:57.000000789+02:00 | date to-table
+        date now | date to-timezone '+0500'
+        date now | date to-timezone local
+        date now | date to-timezone US/Hawaii
+        "2020-10-10 10:00:00 +02:00" | date to-timezone "+0500"
+        'hello' | debug
+        ['hello'] | debug
+        [[version, patch]; ['0.1.0', false], ['0.1.1', true], ['0.2.0', false]] | debug
+        cat myfile.q | decode utf-8
+        0x[00 53 00 6F 00 6D 00 65 00 20 00 44 00 61 00 74 00 61] | decode utf-16be
+        'U29tZSBEYXRh' | decode base64
+        'U29tZSBEYXRh' | decode base64 --binary
+        '0102030A0a0B' | decode hex
+        '01 02  03 0A 0a 0B' | decode hex
+        def say-hi [] { echo 'hi' }
+        say-hi
+        def say-sth [sth: string] { echo $sth }
+        say-sth hi
+        def-env foo [] { let-env BAR = "BAZ" }
+        foo
+        $env.BAR
+        ls -la | default 'nothing' target
+        $env | get -i MY_ENV | default 'abc'
+        [1, 2, null, 4] | default 3
+        'hello' | describe
+        'a b c' | detect columns -n
+        $'c1 c2 c3(char nl)a b c' | detect columns
+        [[a, b]; [1, 2], [1, 4], [2, 6], [2, 4]] | dfr into-df | dfr group-by a | dfr agg [
+            (dfr col b | dfr min | dfr as "b_min")
+            (dfr col b | dfr max | dfr as "b_max")
+            (dfr col b | dfr sum | dfr as "b_sum")
+        ]
+        [[a, b]; [1, 2], [1, 4], [2, 6], [2, 4]] | dfr into-lazy | dfr group-by a | dfr agg [
+            (dfr col b | dfr min | dfr as "b_min")
+            (dfr col b | dfr max | dfr as "b_max")
+            (dfr col b | dfr sum | dfr as "b_sum")
+        ] | dfr collect
+        [false, false, false] | dfr into-df | dfr all-false
+        let s = ([5, 6, 2, 10] | dfr into-df)
+        let res = ($s > 9)
+        $res | dfr all-false
+        [true, true, true] | dfr into-df | dfr all-true
+        let s = ([5, 6, 2, 8] | dfr into-df)
+        let res = ($s > 9)
+        $res | dfr all-true
+        let a = ([[a, b]; [1, 2], [3, 4]] | dfr into-df)
+        $a | dfr append $a
+        let a = ([[a, b]; [1, 2], [3, 4]] | dfr into-df)
+        $a | dfr append $a --col
+        [1, 3, 2] | dfr into-df | dfr arg-max
+        [1, 3, 2] | dfr into-df | dfr arg-min
+        [1, 2, 2, 3, 3] | dfr into-df | dfr arg-sort
+        [1, 2, 2, 3, 3] | dfr into-df | dfr arg-sort -r
+        [false, true, false] | dfr into-df | dfr arg-true
+        [1, 2, 2, 3, 3] | dfr into-df | dfr arg-unique
+        let df = ([[a, b]; [one, 1], [two, 2], [three, 3]] | dfr into-df)
+        $df | dfr select (dfr arg-where ((dfr col b) >= 2) | dfr as b_arg)
+        dfr col a | dfr as new_a | dfr into-nu
+        ["2021-12-30", "2021-12-31"] | dfr into-df | dfr as-datetime "%Y-%m-%d"
+        ["2021-12-30 00:00:00", "2021-12-31 00:00:00"] | dfr into-df | dfr as-datetime "%Y-%m-%d %H:%M:%S"
+        [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr reverse | dfr cache
+        dfr col a | dfr into-nu
+        [[a, b]; [1, 2], [3, 4]] | dfr into-lazy | dfr collect
+        [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr columns
+        let df = ([[a, b, c]; [one, two, 1], [three, four, 2]] | dfr into-df)
+        $df | dfr with-column ((dfr concat-str "-" [
+            (dfr col a)
+            (dfr col b)
+            ((dfr col c) * 2)
+        ]) | dfr as concat)
+        let other = ([za, xs, cd] | dfr into-df)
+        [abc, abc, abc] | dfr into-df | dfr concatenate $other
+        [abc, acb, acb] | dfr into-df | dfr contains ab
+        let s = ([
+            1
+            1
+            0
+            0
+            3
+            3
+            4
+        ] | dfr into-df)
+        ($s / $s) | dfr count-null
+        [1, 2, 3, 4, 5] | dfr into-df | dfr cumulative sum
+        [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr drop a
+        [[a, b]; [1, 2], [3, 4], [1, 2]] | dfr into-df | dfr drop-duplicates
+        let df = ([[a, b]; [1, 2], [3, 0], [1, 2]] | dfr into-df)
+        let res = ($df.b / $df.b)
+        let a = ($df | dfr with-column $res --name res)
+        $a | dfr drop-nulls
+        let s = ([
+            1
+            2
+            0
+            0
+            3
+            4
+        ] | dfr into-df)
+        ($s / $s) | dfr drop-nulls
+        [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr dtypes
+        [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr dummies
+        [1, 2, 2, 3, 3] | dfr into-df | dfr dummies
+        (dfr col a) > 2
+    ) | dfr expr-not [
+        [a, b]
+    ] | dfr into-df | dfr fetch 2 [1, 2, NaN, 3, NaN] | dfr into-df | dfr fill-nan 0 [
+        [a, b]
+    ] | dfr into-df | dfr fill-nan 0 [1, 2, 2, 3, 3] | dfr into-df | dfr shift 2 | dfr fill-null 0 [
+        [a, b]
+    ] | dfr into-df | dfr filter ((dfr col a) >= 4) let mask = ([true, false] | dfr into-df)
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr filter-with $mask
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr filter-with ((dfr col a) > 1)
+    dfr col a | dfr first
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr first
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr first 2
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr get a
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-day
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-hour
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-minute
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-month
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-nanosecond
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-ordinal
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-second
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-week
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-weekday
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr get-year
-
-
-[[a b]; [1 2] [1 4] [2 6] [2 4]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg [
+    [[a, b]; [1, 2], [1, 4], [2, 6], [2, 4]] | dfr into-df | dfr group-by a | dfr agg [
         (dfr col b | dfr min | dfr as "b_min")
         (dfr col b | dfr max | dfr as "b_max")
         (dfr col b | dfr sum | dfr as "b_sum")
-     ]
-[[a b]; [1 2] [1 4] [2 6] [2 4]]
-    | dfr into-lazy
-    | dfr group-by a
-    | dfr agg [
+    ]
+    [[a, b]; [1, 2], [1, 4], [2, 6], [2, 4]] | dfr into-lazy | dfr group-by a | dfr agg [
         (dfr col b | dfr min | dfr as "b_min")
         (dfr col b | dfr max | dfr as "b_max")
         (dfr col b | dfr sum | dfr as "b_sum")
-     ]
-    | dfr collect
-
-
-[[a b];[1 2] [3 4]] | dfr into-df
-[[1 2 a] [3 4 b] [5 6 c]] | dfr into-df
-[a b c] | dfr into-df
-[true true false] | dfr into-df
-
-
-[[a b];[1 2] [3 4]] | dfr into-lazy
-
-
-dfr col a | dfr into-nu
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr into-nu
-[[a b]; [1 2] [5 6] [3 4]] | dfr into-df | dfr into-nu -t -n 1
-
-
-[5 6 6 6 8 8 8] | dfr into-df | dfr is-duplicated
-[[a, b]; [1 2] [1 2] [3 3] [3 3] [1 1]] | dfr into-df | dfr is-duplicated
-
-
-let other = ([1 3 6] | dfr into-df);
-    [5 6 6 6 8 8 8] | dfr into-df | dfr is-in $other
-
-
-let df = ([[a b]; [one 1] [two 2] [three 3]] | dfr into-df);
-    $df | dfr with-column (dfr col a | dfr is-in [one two] | dfr as a_in)
-
-
-dfr col a | dfr is-not-null
-
-
-let s = ([5 6 0 8] | dfr into-df);
-    let res = ($s / $s);
+    ] | dfr collect
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df
+    [
+        [1, 2, a]
+        [3, 4, b]
+        [5, 6, c]
+    ] | dfr into-df
+    [a, b, c] | dfr into-df
+    [true, true, false] | dfr into-df
+    [[a, b]; [1, 2], [3, 4]] | dfr into-lazy
+    dfr col a | dfr into-nu
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr into-nu
+    [[a, b]; [1, 2], [5, 6], [3, 4]] | dfr into-df | dfr into-nu -t -n 1
+    [
+        5
+        6
+        6
+        6
+        8
+        8
+        8
+    ] | dfr into-df | dfr is-duplicated
+    [[a, b]; [1, 2], [1, 2], [3, 3], [3, 3], [1, 1]] | dfr into-df | dfr is-duplicated
+    let other = ([1, 3, 6] | dfr into-df)
+    [
+        5
+        6
+        6
+        6
+        8
+        8
+        8
+    ] | dfr into-df | dfr is-in $other
+    let df = ([[a, b]; [one, 1], [two, 2], [three, 3]] | dfr into-df)
+    $df | dfr with-column (dfr col a | dfr is-in [one, two] | dfr as a_in)
+    dfr col a | dfr is-not-null
+    let s = ([5, 6, 0, 8] | dfr into-df)
+    let res = ($s / $s)
     $res | dfr is-not-null
-
-
-dfr col a | dfr is-null
-
-
-let s = ([5 6 0 8] | dfr into-df);
-    let res = ($s / $s);
+    dfr col a | dfr is-null
+    let s = ([5, 6, 0, 8] | dfr into-df)
+    let res = ($s / $s)
     $res | dfr is-null
-
-
-[5 6 6 6 8 8 8] | dfr into-df | dfr is-unique
-[[a, b]; [1 2] [1 2] [3 3] [3 3] [1 1]] | dfr into-df | dfr is-unique
-
-
-let df_a = ([[a b c];[1 "a" 0] [2 "b" 1] [1 "c" 2] [1 "c" 3]] | dfr into-lazy);
-    let df_b = ([["foo" "bar" "ham"];[1 "a" "let"] [2 "c" "var"] [3 "c" "const"]] | dfr into-lazy);
+    [
+        5
+        6
+        6
+        6
+        8
+        8
+        8
+    ] | dfr into-df | dfr is-unique
+    [[a, b]; [1, 2], [1, 2], [3, 3], [3, 3], [1, 1]] | dfr into-df | dfr is-unique
+    let df_a = ([[a, b, c]; [1, "a", 0], [2, "b", 1], [1, "c", 2], [1, "c", 3]] | dfr into-lazy)
+    let df_b = ([["foo", "bar", "ham"]; [1, "a", "let"], [2, "c", "var"], [3, "c", "const"]] | dfr into-lazy)
     $df_a | dfr join $df_b a foo | dfr collect
-let df_a = ([[a b c];[1 "a" 0] [2 "b" 1] [1 "c" 2] [1 "c" 3]] | dfr into-df);
-    let df_b = ([["foo" "bar" "ham"];[1 "a" "let"] [2 "c" "var"] [3 "c" "const"]] | dfr into-lazy);
+    let df_a = ([[a, b, c]; [1, "a", 0], [2, "b", 1], [1, "c", 2], [1, "c", 3]] | dfr into-df)
+    let df_b = ([["foo", "bar", "ham"]; [1, "a", "let"], [2, "c", "var"], [3, "c", "const"]] | dfr into-lazy)
     $df_a | dfr join $df_b a foo
-
-
-dfr col a | dfr last
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr last 1
-
-
-
-
-
-dfr lit 2 | dfr into-nu
-
-
-[Abc aBc abC] | dfr into-df | dfr lowercase
-
-
-let test = ([[a b];[1 2] [3 4]] | dfr into-df);
+    dfr col a | dfr last
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr last 1
+    dfr lit 2 | dfr into-nu
+    [Abc, aBc, abC] | dfr into-df | dfr lowercase
+    let test = ([[a, b]; [1, 2], [3, 4]] | dfr into-df)
     ls
-
-
-[[a b]; [6 2] [1 4] [4 1]] | dfr into-df | dfr max
-
-
-[[a b]; [one 2] [one 4] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr max)
-
-
-[[a b]; [one 2] [one 4] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr mean)
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr mean
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr median
-
-
-[[a b]; [one 2] [one 4] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr median)
-
-
-[[a b c d]; [x 1 4 a] [y 2 5 b] [z 3 6 c]] | dfr into-df | dfr melt -c [b c] -v [a d]
-
-
-[[a b]; [one 2] [one 4] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr min)
-
-
-[[a b]; [6 2] [1 4] [4 1]] | dfr into-df | dfr min
-
-
-dfr col a | dfr n-unique
-
-
-[1 1 2 2 3 3 4] | dfr into-df | dfr n-unique
-
-
-[true false true] | dfr into-df | dfr not
-
-
-dfr open test.csv
-
-
-dfr when ((dfr col a) > 2) 4 | dfr otherwise 5
-dfr when ((dfr col a) > 2) 4 | dfr when ((dfr col a) < 0) 6 | dfr otherwise 0
-[[a b]; [6 2] [1 4] [4 1]]
-   | dfr into-lazy
-   | dfr with-column (
-    dfr when ((dfr col a) > 2) 4 | dfr otherwise 5 | dfr as c
-     )
-   | dfr with-column (
-    dfr when ((dfr col a) > 5) 10 | dfr when ((dfr col a) < 2) 6 | dfr otherwise 0 | dfr as d
-     )
-   | dfr collect
-
-
-[[a b]; [one 2] [one 4] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr quantile 0.5)
-
-
-[[a b]; [6 2] [1 4] [4 1]] | dfr into-df | dfr quantile 0.5
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr query 'select a from df'
-
-
-[5 6 7 8] | dfr into-df | dfr rename '0' new_name
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr rename a a_new
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr rename [a b] [a_new b_new]
-
-
-[abc abc abc] | dfr into-df | dfr replace -p ab -r AB
-
-
-[abac abac abac] | dfr into-df | dfr replace-all -p a -r A
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr reverse
-
-
-[1 2 3 4 5] | dfr into-df | dfr rolling sum 2 | dfr drop-nulls
-[1 2 3 4 5] | dfr into-df | dfr rolling max 2 | dfr drop-nulls
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr sample -n 1
-[[a b]; [1 2] [3 4] [5 6]] | dfr into-df | dfr sample -f 0.5 -e
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr select a
-
-
-let s = ([1 2 2 3 3] | dfr into-df | dfr shift 2);
-    let mask = ($s | dfr is-null);
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-df | dfr max
+    [[a, b]; [one, 2], [one, 4], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr max)
+    [[a, b]; [one, 2], [one, 4], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr mean)
+    [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr mean
+    [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr median
+    [[a, b]; [one, 2], [one, 4], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr median)
+    [[a, b, c, d]; [x, 1, 4, a], [y, 2, 5, b], [z, 3, 6, c]] | dfr into-df | dfr melt -c [b, c] -v [a, d]
+    [[a, b]; [one, 2], [one, 4], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr min)
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-df | dfr min
+    dfr col a | dfr n-unique
+    [
+        1
+        1
+        2
+        2
+        3
+        3
+        4
+    ] | dfr into-df | dfr n-unique
+    [true, false, true] | dfr into-df | dfr not
+    dfr open test.csv
+    dfr when ((dfr col a) > 2) 4 | dfr otherwise 5
+    dfr when ((dfr col a) > 2) 4 | dfr when ((dfr col a) < 0) 6 | dfr otherwise 0
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-lazy | dfr with-column (dfr when ((dfr col a) > 2) 4 | dfr otherwise 5 | dfr as c) | dfr with-column (
+        dfr when ((dfr col a) > 5) 10 | dfr when ((dfr col a) < 2) 6 | dfr otherwise 0 | dfr as d
+    ) | dfr collect
+    [[a, b]; [one, 2], [one, 4], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr quantile 0.5)
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-df | dfr quantile 0.5
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr query 'select a from df'
+    [5, 6, 7, 8] | dfr into-df | dfr rename '0' new_name
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr rename a a_new
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr rename [a, b] [a_new, b_new]
+    [abc, abc, abc] | dfr into-df | dfr replace -p ab -r AB
+    [abac, abac, abac] | dfr into-df | dfr replace-all -p a -r A
+    [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr reverse
+    [1, 2, 3, 4, 5] | dfr into-df | dfr rolling sum 2 | dfr drop-nulls
+    [1, 2, 3, 4, 5] | dfr into-df | dfr rolling max 2 | dfr drop-nulls
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr sample -n 1
+    [[a, b]; [1, 2], [3, 4], [5, 6]] | dfr into-df | dfr sample -f 0.5 -e
+    [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr select a
+    let s = ([1, 2, 2, 3, 3] | dfr into-df | dfr shift 2)
+    let mask = ($s | dfr is-null)
     $s | dfr set 0 --mask $mask
-
-
-let series = ([4 1 5 2 4 3] | dfr into-df);
-    let indices = ([0 2] | dfr into-df);
+    let series = ([
+        4
+        1
+        5
+        2
+        4
+        3
+    ] | dfr into-df)
+    let indices = ([0, 2] | dfr into-df)
     $series | dfr set-with-idx 6 -i $indices
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr shape
-
-
-[1 2 2 3 3] | dfr into-df | dfr shift 2 | dfr drop-nulls
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr slice 0 1
-
-
-[[a b]; [6 2] [1 4] [4 1]] | dfr into-df | dfr sort-by a
-[[a b]; [6 2] [1 1] [1 4] [2 4]] | dfr into-df | dfr sort-by [a b] -r [false true]
-
-
-[[a b]; [one 2] [one 2] [two 1] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr std)
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr std
-
-
-[a ab abc] | dfr into-df | dfr str-lengths
-
-
-[abcded abc321 abc123] | dfr into-df | dfr str-slice 1 -l 2
-
-
-let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC');
-    let df = ([$dt $dt] | dfr into-df);
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr shape
+    [1, 2, 2, 3, 3] | dfr into-df | dfr shift 2 | dfr drop-nulls
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr slice 0 1
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-df | dfr sort-by a
+    [[a, b]; [6, 2], [1, 1], [1, 4], [2, 4]] | dfr into-df | dfr sort-by [a, b] -r [false, true]
+    [[a, b]; [one, 2], [one, 2], [two, 1], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr std)
+    [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr std
+    [a, ab, abc] | dfr into-df | dfr str-lengths
+    [abcded, abc321, abc123] | dfr into-df | dfr str-slice 1 -l 2
+    let dt = ('2020-08-04T16:39:18+00:00' | into datetime -z 'UTC')
+    let df = ([$dt, $dt] | dfr into-df)
     $df | dfr strftime "%Y/%m/%d"
-
-
-[[a b]; [one 2] [one 4] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr sum)
-
-
-[[a b]; [6 2] [1 4] [4 1]] | dfr into-df | dfr sum
-
-
-[[a b]; [1 1] [1 1]] | dfr into-df | dfr summary
-
-
-let df = ([[a b]; [4 1] [5 2] [4 3]] | dfr into-df);
-    let indices = ([0 2] | dfr into-df);
+    [[a, b]; [one, 2], [one, 4], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr sum)
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-df | dfr sum
+    [[a, b]; [1, 1], [1, 1]] | dfr into-df | dfr summary
+    let df = ([[a, b]; [4, 1], [5, 2], [4, 3]] | dfr into-df)
+    let indices = ([0, 2] | dfr into-df)
     $df | dfr take $indices
-let series = ([4 1 5 2 4 3] | dfr into-df);
-    let indices = ([0 2] | dfr into-df);
+    let series = ([
+        4
+        1
+        5
+        2
+        4
+        3
+    ] | dfr into-df)
+    let indices = ([0, 2] | dfr into-df)
     $series | dfr take $indices
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr to-arrow test.arrow
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr to-csv test.csv
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr to-csv test.csv -d '|'
-
-
-[[a b]; [1 2] [3 4]] | dfr into-df | dfr to-parquet test.parquet
-
-
-[2 2 2 2 2] | dfr into-df | dfr unique
-col a | unique
-
-
-[Abc aBc abC] | dfr into-df | dfr uppercase
-
-
-[5 5 5 5 6 6] | dfr into-df | dfr value-counts
-
-
-[[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr var
-
-
-[[a b]; [one 2] [one 2] [two 1] [two 1]]
-    | dfr into-df
-    | dfr group-by a
-    | dfr agg (dfr col b | dfr var)
-
-
-dfr when ((dfr col a) > 2) 4
-dfr when ((dfr col a) > 2) 4 | dfr when ((dfr col a) < 0) 6
-[[a b]; [6 2] [1 4] [4 1]]
-   | dfr into-lazy
-   | dfr with-column (
-    dfr when ((dfr col a) > 2) 4 | dfr otherwise 5 | dfr as c
-     )
-   | dfr with-column (
-    dfr when ((dfr col a) > 5) 10 | dfr when ((dfr col a) < 2) 6 | dfr otherwise 0 | dfr as d
-     )
-   | dfr collect
-
-
-[[a b]; [1 2] [3 4]]
-    | dfr into-df
-    | dfr with-column ([5 6] | dfr into-df) --name c
-[[a b]; [1 2] [3 4]]
-    | dfr into-lazy
-    | dfr with-column [
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr to-arrow test.arrow
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr to-csv test.csv
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr to-csv test.csv -d '|'
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr to-parquet test.parquet
+    [2, 2, 2, 2, 2] | dfr into-df | dfr unique
+    col a | unique
+    [Abc, aBc, abC] | dfr into-df | dfr uppercase
+    [
+        5
+        5
+        5
+        5
+        6
+        6
+    ] | dfr into-df | dfr value-counts
+    [[a, b]; [6, 2], [4, 2], [2, 2]] | dfr into-df | dfr var
+    [[a, b]; [one, 2], [one, 2], [two, 1], [two, 1]] | dfr into-df | dfr group-by a | dfr agg (dfr col b | dfr var)
+    dfr when ((dfr col a) > 2) 4
+    dfr when ((dfr col a) > 2) 4 | dfr when ((dfr col a) < 0) 6
+    [[a, b]; [6, 2], [1, 4], [4, 1]] | dfr into-lazy | dfr with-column (dfr when ((dfr col a) > 2) 4 | dfr otherwise 5 | dfr as c) | dfr with-column (
+        dfr when ((dfr col a) > 5) 10 | dfr when ((dfr col a) < 2) 6 | dfr otherwise 0 | dfr as d
+    ) | dfr collect
+    [[a, b]; [1, 2], [3, 4]] | dfr into-df | dfr with-column ([5, 6] | dfr into-df) --name c
+    [[a, b]; [1, 2], [3, 4]] | dfr into-lazy | dfr with-column [
         ((dfr col a) * 2 | dfr as "c")
         ((dfr col a) * 3 | dfr as "d")
-      ]
-    | dfr collect
-
-
-do { echo hello }
-let text = "I am enclosed"; let hello = {|| echo $text}; do $hello
-do -i { thisisnotarealcommand }
-do -s { thisisnotarealcommand }
-do -p { nu -c 'exit 1' }; echo "I'll still run"
-do -c { nu -c 'exit 1' } | myscarycommand
-do {|x| 100 + $x } 77
-77 | do {|x| 100 + $in }
-
-
-[0,1,2,3] | drop
-[0,1,2,3] | drop 0
-[0,1,2,3] | drop 2
-[[a, b]; [1, 2] [3, 4]] | drop 1
-
-
-[[lib, extension]; [nu-lib, rs] [nu-core, rb]] | drop column
-
-
-[sam,sarah,2,3,4,5] | drop nth 0 1 2
-[0,1,2,3,4,5] | drop nth 0 1 2
-[0,1,2,3,4,5] | drop nth 0 2 4
-[0,1,2,3,4,5] | drop nth 2 0 4
-[first second third fourth fifth] | drop nth (1..3)
-[0,1,2,3,4,5] | drop nth 1..
-[0,1,2,3,4,5] | drop nth 3..
-
-
-du
-
-
-[1 2 3] | each {|e| 2 * $e }
-{major:2, minor:1, patch:4} | values | each {|| into string }
-[1 2 3 2] | each {|e| if $e == 2 { "two" } }
-[1 2 3] | enumerate | each {|e| if $e.item == 2 { $"found 2 at ($e.index)!"} }
-[1 2 3] | each --keep-empty {|e| if $e == 2 { "found 2!"} }
-
-
-[1 2 3 2 1] | each while {|e| if $e < 3 { $e * 2 } }
-[1 2 stop 3 4] | each while {|e| if $e != 'stop' { $"Output: ($e)" } }
-[1 2 3] | enumerate | each while {|e| if $e.item < 2 { $"value ($e.item) at ($e.index)!"} }
-
-
-echo 1 2 3
-echo $in
-
-
-"負けると知って戦うのが、遥かに美しいのだ" | encode shift-jis
-"🎈" | encode -i shift-jis
-
-
-0x[09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0] | encode base64
-'Some Data' | encode base64
-'Some Data' | encode base64 --character-set binhex
-
-
-0x[09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0] | encode hex
-
-
-enter ../dir-foo
-
-
-[a, b, c] | enumerate 
-
-
-error make {msg: "my custom error message"}
-error make {
+    ] | dfr collect
+    do { echo hello }
+    let text = "I am enclosed"
+    let hello = {|| echo $text }
+    do $hello
+    do -i { thisisnotarealcommand }
+    do -s-s-s-s-s-s-s-s { thisisnotarealcommand }
+    do -p-p-p-p-p-p-p-p { nu -c 'exit 1' }
+    echo "I'll still run"
+    do -c { nu -c 'exit 1' } | myscarycommand
+    do {|x| 100 + $x } 77
+    77 | do {|x| (((100 + $in))) }
+    [0, 1, 2, 3] | drop
+    [0, 1, 2, 3] | drop 0
+    [0, 1, 2, 3] | drop 2
+    [[a, b]; [1, 2], [3, 4]] | drop 1
+    [[lib, extension]; [nu-lib, rs], [nu-core, rb]] | drop column
+    [
+        sam
+        sarah
+        2
+        3
+        4
+        5
+    ] | drop nth 0 1 2
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | drop nth 0 1 2
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | drop nth 0 2 4
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | drop nth 2 0 4
+    [first, second, third, fourth, fifth] | drop nth (1..3)
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | drop nth 1..
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | drop nth 3..
+    du
+    [1, 2, 3] | each {|e| 2 * $e }
+    {major: 2, minor: 1, patch: 4} | values | each {|| into string }
+    [1, 2, 3, 2] | each {|e| if $e == 2 { "two" } }
+    [1, 2, 3] | enumerate | each {|e| if $e.item == 2 { $"found 2 at ($e.index)!"} }
+    [1, 2, 3] | each --keep-empty {|e| if $e == 2 { "found 2!"} }
+    [1, 2, 3, 2, 1] | each while {|e| if $e < 3 { $e * 2 } }
+    [1, 2, stop, 3, 4] | each while {|e| if $e != 'stop' { $"Output: ($e)" } }
+    [1, 2, 3] | enumerate | each while {|e| if $e.item < 2 { $"value ($e.item) at ($e.index)!"} }
+    echo 1 2 3
+    echo $in
+    "負けると知って戦うのが、遥かに美しいのだ" | encode shift-jis
+    "🎈" | encode -i shift-jis
+    0x[09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0] | encode base64
+    'Some Data' | encode base64
+    'Some Data' | encode base64 --character-set binhex
+    0x[09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0] | encode hex
+    enter ../dir-foo
+    [a, b, c] | enumerate
+    error make {msg: "my custom error message"}
+    error make {
         msg: "my custom error message"
-        label: {
-            text: "my custom label text"  # not mandatory unless $.label exists
-            start: 123  # not mandatory unless $.label.end is set
-            end: 456  # not mandatory unless $.label.start is set
-        }
+        label: {text: "my custom label text", start: 123, end: 456}
     }
-def foo [x] {
-        let span = (metadata $x).span;
+    def foo [x] {
+        let span = (metadata $x).span
         error make {
             msg: "this is fishy"
             label: {
@@ -892,1508 +575,1236 @@ def foo [x] {
             }
         }
     }
-
-
-[1 2 3 4 5] | every 2
-[1 2 3 4 5] | every 2 --skip
-
-
-exec ps aux
-exec nautilus
-
-
-exit
-exit --now
-
-
-explain {|| ls | sort-by name type -i | get name } | table -e
-
-
-sys | explore
-ls | explore --head false
-glob *.md | each {|| open } | explore -i
-open file.json | explore -p | to json | save part.json
-
-
-module utils { export def my-command [] { "hello" } }; use utils my-command; my-command
-
-
-module spam { export alias ll = ls -l }
-
-
-module spam { export def foo [] { "foo" } }; use spam foo; foo
-
-
-module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }; use foo bar; bar; $env.FOO_BAR
-
-
-export extern echo [text: string]
-
-
-export old-alias ll = ls -l
-
-
-module spam { export def foo [] { "foo" } }
+    [1, 2, 3, 4, 5] | every 2
+    [1, 2, 3, 4, 5] | every 2 --skip
+    exec ps aux
+    exec nautilus
+    exit
+    exit --now
+    explain {|| ls | sort-by name type -i | get name } | table -e
+    sys | explore
+    ls | explore --head false
+    glob *.md | each {|| open } | explore -i
+    open file.json | explore -p | to json | save part.json
+    module utils {
+        export def my-command [] { "hello" }
+    }
+    use utils my-command
+    my-command
+    module spam { export alias ll = ls -l }
+    module spam {
+        export def foo [] { "foo" }
+    }
+    use spam foo
+    foo
+    module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }
+    use foo bar
+    bar
+    $env.FOO_BAR
+    export extern echo [text: string]
+    export old-alias ll = ls -l
+    module spam {
+        export def foo [] { "foo" }
+    }
     module eggs { export use spam foo }
     use eggs foo
     foo
-            
-
-
-export-env { let-env SPAM = 'eggs' }
-export-env { let-env SPAM = 'eggs' }; $env.SPAM
-
-
-extern echo [text: string]
-
-
-'nushell' | fill -a l -c '─' -w 15
-'nushell' | fill -a r -c '─' -w 15
-'nushell' | fill -a m -c '─' -w 15
-1 | fill --alignment right --character '0' --width 5
-1.1 | fill --alignment center --character '0' --width 5
-1kib | fill --alignment middle --character '0' --width 10
-
-
-[1 2] | filter {|x| $x > 1}
-[{a: 1} {a: 2}] | filter {|x| $x.a > 1}
-let cond = {|x| $x.a > 1}; [{a: 1} {a: 2}] | filter $cond
-
-
-ls | find toml md sh
-'Cargo.toml' | find toml
-[1 5 3kb 4 3Mb] | find 5 3kb
-[moe larry curly] | find l
-[abc bde arc abf] | find --regex "ab"
-[aBc bde Arc abf] | find --regex "ab" -i
-[[version name]; ['0.1.0' nushell] ['0.1.1' fish] ['0.2.0' zsh]] | find -r "nu"
-[[foo bar]; [abc 123] [def 456]] | find 123 | get bar | ansi strip
-
-
-[1 2 3] | first
-[1 2 3] | first 2
-0x[01 23 45] | first 2
-
-
-[[N, u, s, h, e, l, l]] | flatten 
-[[N, u, s, h, e, l, l]] | flatten | first
-[[origin, people]; [Ecuador, ([[name, meal]; ['Andres', 'arepa']])]] | flatten --all | get meal
-[[origin, crate, versions]; [World, ([[name]; ['nu-cli']]), ['0.21', '0.22']]] | flatten versions --all | last | get versions
-{ a: b, d: [ 1 2 3 4 ],  e: [ 4 3  ] } | flatten d --all
-
-
-42 | fmt
-
-
-for x in [1 2 3] { print ($x * $x) }
-for $x in 1..3 { print $x }
-for $it in ['bob' 'fred'] --numbered { print $"($it.index) is ($it.item)" }
-
-
-ls | format '{name}: {size}'
-[[col1, col2]; [v1, v2] [v3, v4]] | format '{col2}'
-
-
-ls | format filesize KB size
-du | format filesize B apparent
-4Gb | format filesize MB
-
-
-
-
-"ColA,ColB
+    export-env { let-env SPAM = 'eggs' }
+    export-env { let-env SPAM = 'eggs' }
+    $env.SPAM
+    extern echo [text: string]
+    'nushell' | fill -a l -c '─' -w 15
+    'nushell' | fill -a r -c '─' -w 15
+    'nushell' | fill -a m -c '─' -w 15
+    1 | fill --alignment right --character '0' --width 5
+    1.1 | fill --alignment center --character '0' --width 5
+    1kib | fill --alignment middle --character '0' --width 10
+    [1, 2] | where {|x| $x > 1}
+    [
+        {a: 1}
+        {a: 2}
+    ] | where {|x| $x.a > 1}
+    let cond = {|x| $x.a > 1 }
+    [
+        {a: 1}
+        {a: 2}
+    ] | where $cond
+    ls | find toml md sh
+    'Cargo.toml' | find toml
+    [
+        1
+        5
+        3kb
+        4
+        3Mb
+    ] | find 5 3kb
+    [moe, larry, curly] | find l
+    [abc, bde, arc, abf] | find --regex "ab"
+    [aBc, bde, Arc, abf] | find --regex "ab" -i
+    [[version, name]; ['0.1.0', nushell], ['0.1.1', fish], ['0.2.0', zsh]] | find -r "nu"
+    [[foo, bar]; [abc, 123], [def, 456]] | find 123 | get bar | ansi strip
+    [1, 2, 3] | first
+    [1, 2, 3] | first 2
+    0x[01 23 45] | first 2
+    [
+        [
+            N
+            u
+            s
+            h
+            e
+            l
+            l
+        ]
+    ] | flatten
+    [
+        [
+            N
+            u
+            s
+            h
+            e
+            l
+            l
+        ]
+    ] | flatten | first
+    [[origin, people]; [Ecuador, ([[name, meal]; ['Andres', 'arepa']])]] | flatten --all | get meal
+    [[origin, crate, versions]; [World, ([[name]; ['nu-cli']]), ['0.21', '0.22']]] | flatten versions --all | last | get versions
+    {
+        a: b
+        d: [1, 2, 3, 4]
+        e: [4, 3]
+    } | flatten d --all
+    42 | fmt
+    for x in [1, 2, 3] { print ($x * $x) }
+    for $x in 1..3 { print $x }
+    for $it in ['bob', 'fred'] --numbered { print $"($it.index) is ($it.item)" }
+    ls | format '{name}: {size}'
+    [[col1, col2]; [v1, v2], [v3, v4]] | format '{col2}'
+    ls | format filesize KB size
+    du | format filesize B apparent
+    4Gb | format filesize MB
+    "ColA,ColB
 1,2" | from csv
-open data.txt | from csv --noheaders
-open data.txt | from csv --separator ';'
-open data.txt | from csv --comment '#'
-open data.txt | from csv --trim all
-open data.txt | from csv --trim headers
-open data.txt | from csv --trim fields
-
-
-'From: test@email.com
+    open data.txt | from csv --noheaders
+    open data.txt | from csv --separator ';'
+    open data.txt | from csv --comment '#'
+    open data.txt | from csv --trim all
+    open data.txt | from csv --trim headers
+    open data.txt | from csv --trim fields
+    'From: test@email.com
 Subject: Welcome
 To: someone@somewhere.com
 Test' | from eml
-'From: test@email.com
+    'From: test@email.com
 Subject: Welcome
 To: someone@somewhere.com
 Test' | from eml -b 1
-
-
-'BEGIN:VCALENDAR
+    'BEGIN:VCALENDAR
             END:VCALENDAR' | from ics
-
-
-'[foo]
+    '[foo]
 a=1
 b=2' | from ini
-
-
-'{ "a": 1 }' | from json
-'{ "a": 1, "b": [1, 2] }' | from json
-
-
-'{ a:1 }' | from nuon
-'{ a:1, b: [1, 2] }' | from nuon
-
-
-open --raw test.ods | from ods
-open --raw test.ods | from ods -s [Spreadsheet1]
-
-
-open --raw file.parquet | from parquet
-open file.parquet
-
-
-
-
-'FOO   BAR
+    '{ "a": 1 }' | from json
+    '{ "a": 1, "b": [1, 2] }' | from json
+    '{ a:1 }' | from nuon
+    '{ a:1, b: [1, 2] }' | from nuon
+    open --raw test.ods | from ods
+    open --raw test.ods | from ods -s [Spreadsheet1]
+    open --raw file.parquet | from parquet
+    open file.parquet
+    'FOO   BAR
 1   2' | from ssv
-'FOO   BAR
+    'FOO   BAR
 1   2' | from ssv -n
-
-
-'a = 1' | from toml
-'a = 1
+    'a = 1' | from toml
+    'a = 1
 b = [1, 2]' | from toml
-
-
-"ColA	ColB
+    "ColA	ColB
 1	2" | from tsv
-$'c1(char tab)c2(char tab)c3(char nl)1(char tab)2(char tab)3' | save tsv-data | open tsv-data | from tsv
-$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv -n
-$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim all
-$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim headers
-$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim fields
-
-
-'bread=baguette&cheese=comt%C3%A9&meat=ham&fat=butter' | from url
-
-
-'BEGIN:VCARD
+    $'c1(char tab)c2(char tab)c3(char nl)1(char tab)2(char tab)3' | save tsv-data | open tsv-data | from tsv
+    $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv -n
+    $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim all
+    $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim headers
+    $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim fields
+    'bread=baguette&cheese=comt%C3%A9&meat=ham&fat=butter' | from url
+    'BEGIN:VCARD
 N:Foo
 FN:Bar
 EMAIL:foo@bar.com
 END:VCARD' | from vcf
-
-
-open --raw test.xlsx | from xlsx
-open --raw test.xlsx | from xlsx -s [Spreadsheet1]
-
-
-'<?xml version="1.0" encoding="UTF-8"?>
+    open --raw test.xlsx | from xlsx
+    open --raw test.xlsx | from xlsx -s [Spreadsheet1]
+    '<?xml version="1.0" encoding="UTF-8"?>
 <note>
   <remember>Event</remember>
 </note>' | from xml
-
-
-'a: 1' | from yaml
-'[ a: 1, b: [1, 2] ]' | from yaml
-
-
-'a: 1' | from yaml
-'[ a: 1, b: [1, 2] ]' | from yaml
-
-
-g
-mkdir foo bar; enter foo; enter ../bar; g 1
-shells; g 2
-mkdir foo bar; enter foo; enter ../bar; g -
-
-
-[0 1 2] | get 1
-[{A: A0}] | get A
-[{A: A0}] | get 0.A
-ls | get name.2
-ls | get 2.name
-sys | get cpu
-$env | get paTH
-$env | get -s Path
-
-
-glob *.rs
-glob **/*.{rs,toml} --depth 2
-glob "[Cc]*"
-glob "{a?c,x?z}"
-glob "(?i)c*"
-glob "[!cCbMs]*"
-glob <a*:3>
-glob <[a-d]:1,10>
-glob "[A-Z]*" --no-file --no-symlink
-
-
-[1 2 3 a b c] | grid
-[1 2 3 a b c] | wrap name | grid
-{name: 'foo', b: 1, c: 2} | grid
-[{name: 'A', v: 1} {name: 'B', v: 2} {name: 'C', v: 3}] | grid
-[[name patch]; [0.1.0 false] [0.1.1 true] [0.2.0 false]] | grid
-
-
-[1 2 3 4] | group 2
-
-
-ls | group-by type
-['1' '3' '1' '3' '2' '1' '1'] | group-by
-
-
-
-
-
-
-
-
-'abcdefghijklmnopqrstuvwxyz' | hash md5
-'abcdefghijklmnopqrstuvwxyz' | hash md5 --binary
-open ./nu_0_24_1_windows.zip | hash md5
-
-
-'abcdefghijklmnopqrstuvwxyz' | hash sha256
-'abcdefghijklmnopqrstuvwxyz' | hash sha256 --binary
-open ./nu_0_24_1_windows.zip | hash sha256
-
-
-"a b c|1 2 3" | split row "|" | split column " " | headers
-"a b c|1 2 3|1 2 3 4" | split row "|" | split column " " | headers
-
-
-help match
-help str lpad
-help --find char
-
-
-help aliases
-help aliases my-alias
-help aliases --find my-alias
-
-
-
-
-help externs
-help externs smth
-help externs --find smth
-
-
-help modules
-help modules my-module
-help modules --find my-module
-
-
-
-
-alias lll = ls -l; hide lll
-def say-hi [] { echo 'Hi!' }; hide say-hi
-
-
-let-env HZ_ENV_ABC = 1; hide-env HZ_ENV_ABC; 'HZ_ENV_ABC' in (env).name
-
-
-
-
-ls | histogram type
-ls | histogram type freq
-[1 2 1] | histogram
-[1 2 3 1 1 1 2 2 1 1] | histogram --percentage-type relative
-
-
-history | length
-history | last 5
-history | wrap cmd | where cmd =~ cargo
-
-
-history session
-
-
-
-
-http delete https://www.example.com
-http delete -u myuser -p mypass https://www.example.com
-http delete -H [my-header-key my-header-value] https://www.example.com
-http delete -d 'body' https://www.example.com
-http delete -t application/json -d { field: value } https://www.example.com
-
-
-http get https://www.example.com
-http get -u myuser -p mypass https://www.example.com
-http get -H [my-header-key my-header-value] https://www.example.com
-
-
-http head https://www.example.com
-http head -u myuser -p mypass https://www.example.com
-http head -H [my-header-key my-header-value] https://www.example.com
-
-
-http patch https://www.example.com 'body'
-http patch -u myuser -p mypass https://www.example.com 'body'
-http patch -H [my-header-key my-header-value] https://www.example.com
-http patch -t application/json https://www.example.com { field: value }
-
-
-http post https://www.example.com 'body'
-http post -u myuser -p mypass https://www.example.com 'body'
-http post -H [my-header-key my-header-value] https://www.example.com
-http post -t application/json https://www.example.com { field: value }
-
-
-http put https://www.example.com 'body'
-http put -u myuser -p mypass https://www.example.com 'body'
-http put -H [my-header-key my-header-value] https://www.example.com
-http put -t application/json https://www.example.com { field: value }
-
-
-if 2 < 3 { 'yes!' }
-if 5 < 3 { 'yes!' } else { 'no!' }
-if 5 < 3 { 'yes!' } else if 4 < 5 { 'no!' } else { 'okay!' }
-
-
-echo done | ignore
-
-
-
-
-let user_input = (input)
-
-
-{'name': 'nu', 'stars': 5} | insert alias 'Nushell'
-[[project, lang]; ['Nushell', 'Rust']] | insert type 'shell'
-[[foo]; [7] [8] [9]] | enumerate | insert bar {|e| $e.item.foo + $e.index } | flatten
-
-
-ls | inspect | get name | inspect
-
-
-
-
-'This is a string that is exactly 52 characters long.' | into binary
-1 | into binary
-true | into binary
-ls | where name == LICENSE | get size | into binary
-ls | where name == LICENSE | get name | path expand | into binary
-1.234 | into binary
-
-
-[[value]; ['false'] ['1'] [0] [1.0] [true]] | into bool value
-true | into bool
-1 | into bool
-0.3 | into bool
-'0.0' | into bool
-'true' | into bool
-
-
-'27.02.2021 1:55 pm +0000' | into datetime
-'2021-02-27T13:55:40.2246+00:00' | into datetime
-'20210227_135540+0000' | into datetime -f '%Y%m%d_%H%M%S%z'
-1614434140123456789 | into datetime --offset -5
-1614434140 * 1_000_000_000 | into datetime
-
-
-[[num]; ['5.01']] | into decimal num
-'1.345' | into decimal
-'-5.9' | into decimal
-true | into decimal
-
-
-[[value]; ['1sec'] ['2min'] ['3hr'] ['4day'] ['5wk']] | into duration value
-'7min' | into duration
-'7min' | into duration --convert sec
-420sec | into duration
-420sec | into duration --convert ms
-1000000µs | into duration --convert sec
-1sec | into duration --convert µs
-1sec | into duration --convert us
-
-
-[[bytes]; ['5'] [3.2] [4] [2kb]] | into filesize bytes
-'2' | into filesize
-8.3 | into filesize
-5 | into filesize
-4KB | into filesize
-
-
-[[num]; ['-5'] [4] [1.5]] | into int num
-'2' | into int
-5.9 | into int
-'5.9' | into int
-4KB | into int
-[false, true] | into int
-1983-04-13T12:09:14.123456789-05:00 | into int
-'1101' | into int -r 2
-'FF' |  into int -r 16
-'0o10132' | into int
-'0010132' | into int
-'0010132' | into int -r 8
-
-
-[[value]; [false]] | into record
-[1 2 3] | into record
-0..2 | into record
--500day | into record
-{a: 1, b: 2} | into record
-2020-04-12T22:10:57+02:00 | into record
-
-
-ls | into sqlite my_ls.db
-ls | into sqlite my_ls.db -t my_table
-[[name]; [-----] [someone] [=====] [somename] ['(((((']] | into sqlite filename.db
-[one 2 5.2 six true 100mib 25sec] | into sqlite variety.db
-
-
-5 | into string -d 3
-1.7 | into string -d 0
-1.7 | into string -d 1
-1.734 | into string -d 2
-1.734 | into string -d -2
-4.3 | into string
-'1234' | into string
-true | into string
-ls Cargo.toml | get name | into string
-1KiB | into string
-
-
-if is-admin { "iamroot" } else { "iamnotroot" }
-
-
-'' | is-empty
-[] | is-empty
-[[meal size]; [arepa small] [taco '']] | is-empty meal size
-
-
-{ new: york, san: francisco } | items {|key, value| echo $'($key) ($value)' }
-
-
-[{a: 1 b: 2}] | join [{a: 1 c: 3}] a
-
-
-open -r test.json | json path '$.store.book[*].author'
-
-
-
-
-keybindings default
-
-
-keybindings list -m
-keybindings list -e -d
-keybindings list
-
-
-keybindings listen
-
-
-ps | sort-by mem | last | kill $in.pid
-kill --force 12345
-kill -s 2 12345
-
-
-[1,2,3] | last 2
-[1,2,3] | last
-
-
-[1 2 3 4 5] | length
-[{columnA: A0 columnB: B0}] | length -c
-
-
-let x = 10
-let x = 10 + 100
-let x = if false { -1 } else { 1 }
-
-
-let-env MY_ENV_VAR = 1; $env.MY_ENV_VAR
-
-
-$"two\nlines" | lines
-
-
-{NAME: ABE, AGE: UNKNOWN} | load-env; $env.NAME
-load-env {NAME: ABE, AGE: UNKNOWN}; $env.NAME
-
-
-mut x = 0; loop { if $x > 10 { break }; $x = $x + 1 }; $x
-
-
-ls
-ls subdir
-ls -f ..
-ls *.rs
-ls -s | where name !~ bar
-ls -a ~ | where type == dir
-ls -as ~ | where type == dir and modified < ((date now) - 7day)
-['/path/to/directory' '/path/to/file'] | each {|| ls -D $in } | flatten
-
-
-match 3 { 1..10 => 'yes!' }
-match {a: 100} { {a: $my_value} => { $my_value } }
-match 3 { 1 => { 'yes!' }, _ => { 'no!' } }
-match [1, 2, 3] { [$a, $b, $c] => { $a + $b + $c }, _ => 0 }
-{a: {b: 3}} | match $in {{a: { $b }} => ($b + 10) }
-
-
-
-
-[-50 -100.0 25] | math abs
-
-
-1 | math arccos
--1 | math arccos -d
-
-
-1 | math arccosh
-
-
-1 | math arcsin
-1 | math arcsin -d
-
-
-0 | math arcsinh
-
-
-1 | math arctan
--1 | math arctan -d
-
-
-1 | math arctanh
-
-
-[-50 100.0 25] | math avg
-
-
-[1.5 2.3 -3.1] | math ceil
-
-
-math pi | math cos
-[0 90 180 270 360] | math cos -d
-
-
-1 | math cosh
-
-
-math e | math round --precision 3
-
-
-
-
-0 | math exp
-1 | math exp
-
-
-[1.5 2.3 -3.1] | math floor
-
-
-math e | math ln
-
-
-100 | math log 10
-[16 8 4] | math log 2
-
-
-[-50 100 25] | math max
-[{a: 1 b: 3} {a: 2 b: -1}] | math max
-
-
-[3 8 9 12 12 15] | math median
-[{a: 1 b: 3} {a: 2 b: -1} {a: -3 b: 5}] | math median
-
-
-[-50 100 25] | math min
-[{a: 1 b: 3} {a: 2 b: -1}] | math min
-
-
-[3 3 9 12 12 15] | math mode
-[{a: 1 b: 3} {a: 2 b: -1} {a: 1 b: 5}] | math mode
-
-
-math pi | math round --precision 2
-
-
-[2 3 3 4] | math product
-
-
-[1.5 2.3 -3.1] | math round
-[1.555 2.333 -3.111] | math round -p 2
-
-
-(math pi) / 2 | math sin
-[0 90 180 270 360] | math sin -d | math round --precision 4
-
-
-1 | math sinh
-
-
-[9 16] | math sqrt
-
-
-[1 2 3 4 5] | math stddev
-[1 2 3 4 5] | math stddev -s
-
-
-[1 2 3] | math sum
-ls | get size | math sum
-
-
-(math pi) / 4 | math tan
-[-45 0 45] | math tan -d
-
-
-(math pi) * 10 | math tanh
-
-
-math tau | math round --precision 2
-
-
-[1 2 3 4 5] | math variance
-[1 2 3 4 5] | math variance -s
-
-
-[a b c] | wrap name | merge ( [1 2 3] | wrap index )
-{a: 1, b: 2} | merge {c: 3}
-[{columnA: A0 columnB: B0}] | merge [{columnA: 'A0*'}]
-
-
-let a = 42; metadata $a
-ls | metadata
-
-
-mkdir foo
-mkdir -v foo/bar foo2
-
-
-module spam { export def foo [] { "foo" } }; use spam foo; foo
-module foo { export-env { let-env FOO = "BAZ" } }; use foo; $env.FOO
-module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }; use foo bar; bar; $env.FOO_BAR
-
-
-[[name value index]; [foo a 1] [bar b 2] [baz c 3]] | move index --before name
-[[name value index]; [foo a 1] [bar b 2] [baz c 3]] | move value name --after index
-{ name: foo, value: a, index: 1 } | move name --before index
-
-
-mut x = 10; $x = 12
-mut a = {b:{c:1}}; $a.b.c = 2
-mut x = 10 + 100
-mut x = if false { -1 } else { 1 }
-
-
-mv before.txt after.txt
-mv test.txt my/subdirectory
-mv *.txt my/subdirectory
-
-
-mkdir foo bar; enter foo; enter ../bar; n
-n
-
-
-nu-check script.nu
-nu-check --as-module module.nu
-nu-check -d script.nu
-open foo.nu | nu-check -d script.nu
-open module.nu | lines | nu-check -d --as-module module.nu
-$'two(char nl)lines' | nu-check 
-nu-check -a script.nu
-open foo.nu | lines | nu-check -ad
-
-
-'let x = 3' | nu-highlight
-
-
-old-alias ll = ls -l
-old-alias customs = ($nu.scope.commands | where is_custom | get command)
-
-
-open myfile.json
-open myfile.json --raw
-'myfile.txt' | open
-open myfile.txt --raw | decode utf-8
-
-
-
-
-module spam { export def foo [] { "foo" } }
+    'a: 1' | from yaml
+    '[ a: 1, b: [1, 2] ]' | from yaml
+    'a: 1' | from yaml
+    '[ a: 1, b: [1, 2] ]' | from yaml
+    g
+    mkdir foo bar
+    enter foo
+    enter ../bar
+    g 1
+    shells
+    g 2
+    mkdir foo bar
+    enter foo
+    enter ../bar
+    g -
+    [0, 1, 2] | get 1
+    [
+        {A: A0}
+    ] | get A
+    [
+        {A: A0}
+    ] | get 0.A
+    ls | get name.2
+    ls | get 2.name
+    sys | get cpu
+    $env | get paTH
+    $env | get -s Path
+    glob *.rs
+    glob **/*.{rs,toml} --depth 2
+    glob "[Cc]*"
+    glob "{a?c,x?z}"
+    glob "(?i)c*"
+    glob "[!cCbMs]*"
+    glob <a*:3>
+    glob <[a-d]:1,10>
+    glob "[A-Z]*" --no-file --no-symlink
+    [
+        1
+        2
+        3
+        a
+        b
+        c
+    ] | grid
+    [
+        1
+        2
+        3
+        a
+        b
+        c
+    ] | wrap name | grid
+    {name: 'foo', b: 1, c: 2} | grid
+    [
+        {name: 'A', v: 1}
+        {name: 'B', v: 2}
+        {name: 'C', v: 3}
+    ] | grid
+    [[name, patch]; [0.1.0, false], [0.1.1, true], [0.2.0, false]] | grid
+    [1, 2, 3, 4] | group 2
+    ls | group-by type
+    [
+        '1'
+        '3'
+        '1'
+        '3'
+        '2'
+        '1'
+        '1'
+    ] | group-by
+    'abcdefghijklmnopqrstuvwxyz' | hash md5
+    'abcdefghijklmnopqrstuvwxyz' | hash md5 --binary
+    open ./nu_0_24_1_windows.zip | hash md5
+    'abcdefghijklmnopqrstuvwxyz' | hash sha256
+    'abcdefghijklmnopqrstuvwxyz' | hash sha256 --binary
+    open ./nu_0_24_1_windows.zip | hash sha256
+    "a b c|1 2 3" | split row "|" | split column " " | headers
+    "a b c|1 2 3|1 2 3 4" | split row "|" | split column " " | headers
+    help match
+    help str lpad
+    help --find char
+    help aliases
+    help aliases my-alias
+    help aliases --find my-alias
+    help externs
+    help externs smth
+    help externs --find smth
+    help modules
+    help modules my-module
+    help modules --find my-module
+    alias lll = ls -l
+    hide lll
+    def say-hi [] { echo 'Hi!' }
+    hide say-hi
+    let-env HZ_ENV_ABC = (1)
+    hide-env HZ_ENV_ABC
+    'HZ_ENV_ABC' in (env).name
+    ls | histogram type
+    ls | histogram type freq
+    [1, 2, 1] | histogram
+    [
+        1
+        2
+        3
+        1
+        1
+        1
+        2
+        2
+        1
+        1
+    ] | histogram --percentage-type relative
+    history | length
+    history | last 5
+    history | wrap cmd | where cmd =~ cargo
+    history session
+    http delete https://www.example.com
+    http delete -u myuser -p mypass https://www.example.com
+    http delete -H [my-header-key, my-header-value] https://www.example.com
+    http delete -d 'body' https://www.example.com
+    http delete -t application/json -d { field: value } https://www.example.com
+    http get https://www.example.com
+    http get -u myuser -p mypass https://www.example.com
+    http get -H [my-header-key, my-header-value] https://www.example.com
+    http head https://www.example.com
+    http head -u myuser -p mypass https://www.example.com
+    http head -H [my-header-key, my-header-value] https://www.example.com
+    http patch https://www.example.com 'body'
+    http patch -u myuser -p mypass https://www.example.com 'body'
+    http patch -H [my-header-key, my-header-value] https://www.example.com
+    http patch -t application/json https://www.example.com { field: value }
+    http post https://www.example.com 'body'
+    http post -u myuser -p mypass https://www.example.com 'body'
+    http post -H [my-header-key, my-header-value] https://www.example.com
+    http post -t application/json https://www.example.com { field: value }
+    http put https://www.example.com 'body'
+    http put -u myuser -p mypass https://www.example.com 'body'
+    http put -H [my-header-key, my-header-value] https://www.example.com
+    http put -t application/json https://www.example.com { field: value }
+    if 2 < 3 { 'yes!' }
+    if 5 < 3 { 'yes!' } else { 'no!' }
+    if 5 < 3 { 'yes!' } else if 4 < 5 { 'no!' } else { 'okay!' }
+    echo done | ignore
+    let user_input = (input)
+    {'name': 'nu', 'stars': 5} | insert alias 'Nushell'
+    [[project, lang]; ['Nushell', 'Rust']] | insert type 'shell'
+    [[foo]; [7], [8], [9]] | enumerate | insert bar {|e| $e.item.foo + $e.index } | flatten
+    ls | inspect | get name | inspect
+    'This is a string that is exactly 52 characters long.' | into binary
+    1 | into binary
+    true | into binary
+    ls | where name == LICENSE | get size | into binary
+    ls | where name == LICENSE | get name | path expand | into binary
+    1.234 | into binary
+    [[value]; ['false'], ['1'], [0], [1.0], [true]] | into bool value
+    true | into bool
+    1 | into bool
+    0.3 | into bool
+    '0.0' | into bool
+    'true' | into bool
+    '27.02.2021 1:55 pm +0000' | into datetime
+    '2021-02-27T13:55:40.2246+00:00' | into datetime
+    '20210227_135540+0000' | into datetime -f '%Y%m%d_%H%M%S%z'
+    1614434140123456789 | into datetime --offset -5
+    1614434140 * 1_000_000_000 | into datetime
+    [[num]; ['5.01']] | into decimal num
+    '1.345' | into decimal
+    '-5.9' | into decimal
+    true | into decimal
+    [[value]; ['1sec'], ['2min'], ['3hr'], ['4day'], ['5wk']] | into duration value
+    '7min' | into duration
+    '7min' | into duration --convert sec
+    420sec | into duration
+    420sec | into duration --convert ms
+    1000000µs | into duration --convert sec
+    1sec | into duration --convert µs
+    1sec | into duration --convert us
+    [[bytes]; ['5'], [3.2], [4], [2kb]] | into filesize bytes
+    '2' | into filesize
+    8.3 | into filesize
+    5 | into filesize
+    4KB | into filesize
+    [[num]; ['-5'], [4], [1.5]] | into int num
+    '2' | into int
+    5.9 | into int
+    '5.9' | into int
+    4KB | into int
+    [false, true] | into int
+    1983-04-13T12:09:14.123456789-05:00 | into int
+    '1101' | into int -r 2
+    'FF' | into int -r 16
+    '0o10132' | into int
+    '0010132' | into int
+    '0010132' | into int -r 8
+    [[value]; [false]] | into record
+    [1, 2, 3] | into record
+    0..2 | into record
+    -500day | into record
+    {a: 1, b: 2} | into record
+    2020-04-12T22:10:57+02:00 | into record
+    ls | into sqlite my_ls.db
+    ls | into sqlite my_ls.db -t my_table
+    [[name]; [-----], [someone], [=====], [somename], ['(((((']] | into sqlite filename.db
+    [
+        one
+        2
+        5.2
+        six
+        true
+        100mib
+        25sec
+    ] | into sqlite variety.db
+    5 | into string -d 3
+    1.7 | into string -d 0
+    1.7 | into string -d 1
+    1.734 | into string -d 2
+    1.734 | into string -d -2
+    4.3 | into string
+    '1234' | into string
+    true | into string
+    ls Cargo.toml | get name | into string
+    1KiB | into string
+    if is-admin { "iamroot" } else { "iamnotroot" }
+    '' | is-empty
+    [] | is-empty
+    [[meal, size]; [arepa, small], [taco, '']] | is-empty meal size
+    {new: york, san: francisco} | items {|key, value| echo $'($key) ($value)' }
+    [
+        {a: 1, b: 2}
+    ] | join [
+        {a: 1, c: 3}
+    ] a
+    open -r test.json | json path '$.store.book[*].author'
+    keybindings default
+    keybindings list -m
+    keybindings list -e -d
+    keybindings list
+    keybindings listen
+    ps | sort-by mem | last | kill $in.pid
+    kill --force 12345
+    kill -s 2 12345
+    [1, 2, 3] | last 2
+    [1, 2, 3] | last
+    [1, 2, 3, 4, 5] | length
+    [
+        {columnA: A0, columnB: B0}
+    ] | length -c
+    let x = 10
+    let x = 10 + 100
+    let x = if false { -1 } else { 1 }
+    let-env MY_ENV_VAR = (1)
+    $env.MY_ENV_VAR
+    $"two\nlines" | lines
+    {NAME: ABE, AGE: UNKNOWN} | load-env
+    $env.NAME
+    load-env {NAME: ABE, AGE: UNKNOWN}
+    $env.NAME
+    mut x = 0
+    loop {
+        if $x > 10 { break }
+        $x = ($x + 1)
+    }
+    $x
+    ls
+    ls subdir
+    ls -f ..
+    ls *.rs
+    ls -s | where name !~ bar
+    ls -a ~ | where type == dir
+    ls -as ~ | where type == dir and modified < ((date now) - 7day)
+    ['/path/to/directory', '/path/to/file'] | each {|| ls -D $in } | flatten
+    match 3 {
+        1..10 => 'yes!'
+    }
+    match {a: 100} {
+        {a: $my_value} => { $my_value }
+    }
+    match 3 {
+        1 => { 'yes!' }
+        _ => { 'no!' }
+    }
+    match [1, 2, 3] {
+        [$a, $b, $c] => { $a + $b + $c }
+        _ => 0
+    }
+    {
+        a: {b: 3}
+    } | match $in {
+        {a: {b: $b}} => ($b + 10)
+    }
+    [-50, -100.0, 25] | math abs
+    1 | math arccos
+    -1 | math arccos -d
+    1 | math arccosh
+    1 | math arcsin
+    1 | math arcsin -d
+    0 | math arcsinh
+    1 | math arctan
+    -1 | math arctan -d
+    1 | math arctanh
+    [-50, 100.0, 25] | math avg
+    [1.5, 2.3, -3.1] | math ceil
+    math pi | math cos
+    [0, 90, 180, 270, 360] | math cos -d
+    1 | math cosh
+    math e | math round --precision 3
+    0 | math exp
+    1 | math exp
+    [1.5, 2.3, -3.1] | math floor
+    math e | math ln
+    100 | math log 10
+    [16, 8, 4] | math log 2
+    [-50, 100, 25] | math max
+    [
+        {a: 1, b: 3}
+        {a: 2, b: -1}
+    ] | math max
+    [
+        3
+        8
+        9
+        12
+        12
+        15
+    ] | math median
+    [
+        {a: 1, b: 3}
+        {a: 2, b: -1}
+        {a: -3, b: 5}
+    ] | math median
+    [-50, 100, 25] | math min
+    [
+        {a: 1, b: 3}
+        {a: 2, b: -1}
+    ] | math min
+    [
+        3
+        3
+        9
+        12
+        12
+        15
+    ] | math mode
+    [
+        {a: 1, b: 3}
+        {a: 2, b: -1}
+        {a: 1, b: 5}
+    ] | math mode
+    math pi | math round --precision 2
+    [2, 3, 3, 4] | math product
+    [1.5, 2.3, -3.1] | math round
+    [1.555, 2.333, -3.111] | math round -p 2
+    (math pi) / 2 | math sin
+    [0, 90, 180, 270, 360] | math sin -d | math round --precision 4
+    1 | math sinh
+    [9, 16] | math sqrt
+    [1, 2, 3, 4, 5] | math stddev
+    [1, 2, 3, 4, 5] | math stddev -s
+    [1, 2, 3] | math sum
+    ls | get size | math sum
+    (math pi) / 4 | math tan
+    [-45, 0, 45] | math tan -d
+    (math pi) * 10 | math tanh
+    math tau | math round --precision 2
+    [1, 2, 3, 4, 5] | math variance
+    [1, 2, 3, 4, 5] | math variance -s
+    [a, b, c] | wrap name | merge ([1, 2, 3] | wrap index)
+    {a: 1, b: 2} | merge {c: 3}
+    [
+        {columnA: A0, columnB: B0}
+    ] | merge [
+        {columnA: 'A0*'}
+    ]
+    let a = 42
+    metadata $a
+    ls | metadata
+    mkdir foo
+    mkdir -v foo/bar foo2
+    module spam {
+        export def foo [] { "foo" }
+    }
+    use spam foo
+    foo
+    module foo { export-env { let-env FOO = "BAZ" } }
+    use foo
+    $env.FOO
+    module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }
+    use foo bar
+    bar
+    $env.FOO_BAR
+    [[name, value, index]; [foo, a, 1], [bar, b, 2], [baz, c, 3]] | move index --before name
+    [[name, value, index]; [foo, a, 1], [bar, b, 2], [baz, c, 3]] | move value name --after index
+    {name: foo, value: a, index: 1} | move name --before index
+    mut x = 10
+    $x = (12)
+    mut a = {
+        b: {c: 1}
+    }
+    $a.b.c = (2)
+    mut x = 10 + 100
+    mut x = if false { -1 } else { 1 }
+    mv before.txt after.txt
+    mv test.txt my/subdirectory
+    mv *.txt my/subdirectory
+    mkdir foo bar
+    enter foo
+    enter ../bar
+    n
+    n
+    nu-check script.nu
+    nu-check --as-module module.nu
+    nu-check -d script.nu
+    open foo.nu | nu-check -d script.nu
+    open module.nu | lines | nu-check -d --as-module module.nu
+    $'two(char nl)lines' | nu-check
+    nu-check -a script.nu
+    open foo.nu | lines | nu-check -ad
+    'let x = 3' | nu-highlight
+    old-alias ll = (ls -l)
+    old-alias customs = (($nu.scope.commands | where is_custom | get command))
+    open myfile.json
+    open myfile.json --raw
+    'myfile.txt' | open
+    open myfile.txt --raw | decode utf-8
+    module spam {
+        export def foo [] { "foo" }
+    }
     overlay use spam
     def bar [] { "bar" }
     overlay hide spam --keep-custom
     bar
-    
-'export alias f = "foo"' | save spam.nu
+    'export alias f = "foo"' | save spam.nu
     overlay use spam.nu
     overlay hide spam
-module spam { export-env { let-env FOO = "foo" } }
+    module spam { export-env { let-env FOO = "foo" } }
     overlay use spam
     overlay hide
-overlay new spam
+    overlay new spam
     cd some-dir
-    overlay hide --keep-env [ PWD ] spam
-
-
-module spam { export def foo [] { "foo" } }
+    overlay hide --keep-env [PWD] spam
+    module spam {
+        export def foo [] { "foo" }
+    }
     overlay use spam
     overlay list | last
-
-
-overlay new spam
-
-
-module spam { export def foo [] { "foo" } }
+    overlay new spam
+    module spam {
+        export def foo [] { "foo" }
+    }
     overlay use spam
     foo
-module spam { export def foo [] { "foo" } }
+    module spam {
+        export def foo [] { "foo" }
+    }
     overlay use spam as spam_new
     foo
-'export def foo { "foo" }'
+    'export def foo { "foo" }'
     overlay use --prefix spam
     spam foo
-'export-env { let-env FOO = "foo" }' | save spam.nu
+    'export-env { let-env FOO = "foo" }' | save spam.nu
     overlay use spam.nu
     $env.FOO
-
-
-mkdir foo bar; enter foo; enter ../bar; p
-p
-
-
-[1 2 3] | par-each {|| 2 * $in }
-[foo bar baz] | par-each {|e| $e + '!' } | sort
-1..3 | enumerate | par-each {|p| update item ($p.item * 2)} | sort-by item | get item
-[1 2 3] | enumerate | par-each { |e| if $e.item == 2 { $"found 2 at ($e.index)!"} }
-
-
-"hi there" | parse "{foo} {bar}"
-"hi there" | parse -r '(?P<foo>\w+) (?P<bar>\w+)'
-"foo bar." | parse -r '\s*(?<name>\w+)(?=\.)'
-"foo! bar." | parse -r '(\w+)(?=\.)|(\w+)(?=!)'
-" @another(foo bar)   " | parse -r '\s*(?<=[() ])(@\w+)(\([^)]*\))?\s*'
-"abcd" | parse -r '^a(bc(?=d)|b)cd$'
-
-
-
-
-'/home/joe/test.txt' | path basename
-[[name];[/home/joe]] | path basename -c [ name ]
-'/home/joe/test.txt' | path basename -r 'spam.png'
-
-
-'/home/joe/code/test.txt' | path dirname
-ls ('.' | path expand) | path dirname -c [ name ]
-'/home/joe/code/test.txt' | path dirname -n 2
-'/home/joe/code/test.txt' | path dirname -n 2 -r /home/viking
-
-
-'/home/joe/todo.txt' | path exists
-ls | path exists -c [ name ]
-
-
-'/home/joe/foo/../bar' | path expand
-ls | path expand -c [ name ]
-'foo/../bar' | path expand
-
-
-'/home/viking' | path join spam.txt
-'/home/viking' | path join spams this_spam.txt
-ls | path join spam.txt -c [ name ]
-[ '/' 'home' 'viking' 'spam.txt' ] | path join
-[[ parent stem extension ]; [ '/home/viking' 'spam' 'txt' ]] | path join
-
-
-'/home/viking/spam.txt' | path parse
-'/home/viking/spam.tar.gz' | path parse -e tar.gz | upsert extension { 'txt' }
-'/etc/conf.d' | path parse -e ''
-ls | path parse -c [ name ]
-
-
-'/home/viking' | path relative-to '/home'
-ls ~ | path relative-to ~ -c [ name ]
-'eggs/bacon/sausage/spam' | path relative-to 'eggs/bacon/sausage'
-
-
-'/home/viking/spam.txt' | path split
-ls ('.' | path expand) | path split -c [ name ]
-
-
-'.' | path type
-ls | path type -c [ name ]
-
-
-
-
-
-
-pnet
-
-
-port 3121 4000
-port
-
-
-[1,2,3,4] | prepend 0
-[2,3,4] | prepend [0,1]
-[2,nu,4,shell] | prepend [0,1,rocks]
-
-
-print "hello world"
-print (2 + 3)
-
-
-def spam [] { "spam" }; profile {|| spam | str length } -d 2 --source
-
-
-ps
-ps | sort-by mem | last 5
-ps | sort-by cpu | last 3
-ps | where name =~ 'nu'
-ps | where pid == $nu.pid | get ppid
-
-
-
-
-open foo.db | query db "SELECT * FROM Bar"
-
-
-
-
-http get https://phoronix.com | query web -q 'header'
-http get https://en.wikipedia.org/wiki/List_of_cities_in_India_by_population
-    | query web -t [Rank City 'Population(2011)[3]' 'Population(2001)' 'State or union territory']
-http get https://www.nushell.sh | query web -q 'h2, h2 + p' | group 2 | each {rotate --ccw tagline description} | flatten
-http get https://example.org | query web --query a --attribute href
-
-
-
-
-
-
-random bool
-random bool --bias 0.75
-
-
-random chars
-random chars -l 20
-
-
-random decimal
-random decimal ..500
-random decimal 100000..
-random decimal 1.0..1.1
-
-
-random dice
-random dice -d 10 -s 12
-
-
-random integer
-random integer ..500
-random integer 100000..
-random integer 1..10
-
-
-random uuid
-
-
-[0,1,2,3,4,5] | range 4..5
-[0,1,2,3,4,5] | range (-2)..
-[0,1,2,3,4,5] | range (-3)..-2
-
-
-[ 1 2 3 4 ] | reduce {|it, acc| $it + $acc }
-[ 8 7 6 ] | enumerate | reduce -f 0 {|it, acc| $acc + $it.item + $it.index }
-[ 1 2 3 4 ] | reduce -f 10 {|it, acc| $acc + $it }
-[ i o t ] | reduce -f "Arthur, King of the Britons" {|it, acc| $acc | str replace -a $it "X" }
-['foo.gz', 'bar.gz', 'baz.gz'] | enumerate | reduce -f '' {|str all| $"($all)(if $str.index != 0 {'; '})($str.index + 1)-($str.item)" }
-
-
-"hello world" | regex '(?P<first>\w+) (?P<second>\w+)'
-
-
-register ~/.cargo/bin/nu_plugin_query
-let plugin = ((which nu).path.0 | path dirname | path join 'nu_plugin_query'); nu -c $'register ($plugin); version'
-
-
-ls | reject modified
-[[a, b]; [1, 2]] | reject a
-{a: 1, b: 2} | reject a
-{a: {b: 3, c: 5}} | reject a.b
-
-
-[[a, b]; [1, 2]] | rename my_column
-[[a, b, c]; [1, 2, 3]] | rename eggs ham bacon
-[[a, b, c]; [1, 2, 3]] | rename -c [a ham]
-{a: 1 b: 2} | rename x y
-
-
-def foo [] { return }
-
-
-[0,1,2,3] | reverse
-[{a: 1} {a: 2}] | reverse
-
-
-rm file.txt
-rm --trash file.txt
-rm --permanent file.txt
-rm --force file.txt
-ls | where size == 0KB and type == file | each { rm $in.name } | null
-
-
-
-
-[[a b]; [1 2] [3 4] [5 6]] | roll down
-
-
-{a:1 b:2 c:3} | roll left
-[[a b c]; [1 2 3] [4 5 6]] | roll left
-[[a b c]; [1 2 3] [4 5 6]] | roll left --cells-only
-
-
-{a:1 b:2 c:3} | roll right
-[[a b c]; [1 2 3] [4 5 6]] | roll right
-[[a b c]; [1 2 3] [4 5 6]] | roll right --cells-only
-
-
-[[a b]; [1 2] [3 4] [5 6]] | roll up
-
-
-{a:1, b:2} | rotate
-[[a b]; [1 2] [3 4] [5 6]] | rotate
-[[a b]; [1 2]] | rotate col_a col_b
-[[a b]; [1 2]] | rotate --ccw
-[[a b]; [1 2] [3 4] [5 6]] | rotate --ccw
-[[a b]; [1 2]] | rotate --ccw col_a col_b
-
-
-run-external "echo" "-n" "hello"
-run-external --redirect-stdout "echo" "-n" "hello" | split chars
-
-
-'save me' | save foo.txt
-'append me' | save --append foo.txt
-{ a: 1, b: 2 } | save foo.json
-do -i {} | save foo.txt --stderr foo.txt
-do -i {} | save foo.txt --stderr bar.txt
-
-
-open foo.db | schema
-
-
-[{a: a b: b}] | select a
-{a: a b: b} | select a
-ls | select name
-ls | select 0 1 2 3
-
-
-seq 1 10
-seq 1.0 0.1 2.0
-seq 1 5 | str join '|'
-
-
-seq char a e
-seq char a e | str join '|'
-
-
-seq date --days 10
-seq date --days 10 -r
-seq date --days 10 -o '%m/%d/%Y' -r
-seq date -b '2020-01-01' -e '2020-01-10'
-seq date -b '2020-01-01' -e '2020-01-31' -n 5
-
-
-enter ..; shells
-shells | where active == true
-
-
-[[version patch]; ['1.0.0' false] ['3.0.1' true] ['2.0.0' false]] | shuffle
-
-
-"There are seven words in this sentence" | size
-'今天天气真好' | size 
-"Amélie Amelie" | size
-
-
-[2 4 6 8] | skip 1
-[[editions]; [2015] [2018] [2021]] | skip 2
-
-
-[-2 0 2 -1] | skip until {|x| $x > 0 }
-let cond = {|x| $x > 0 }; [-2 0 2 -1] | skip until $cond
-[{a: -2} {a: 0} {a: 2} {a: -1}] | skip until {|x| $x.a > 0 }
-
-
-[-2 0 2 -1] | skip while {|x| $x < 0 }
-let cond = {|x| $x < 0 }; [-2 0 2 -1] | skip while $cond
-[{a: -2} {a: 0} {a: 2} {a: -1}] | skip while {|x| $x.a < 0 }
-
-
-sleep 1sec
-
-
-[2 0 1] | sort
-[2 0 1] | sort -r
-[betty amy sarah] | sort
-[betty amy sarah] | sort -r
-[airplane Truck Car] | sort -i
-[airplane Truck Car] | sort -i -r
-{b: 3, a: 4} | sort
-{b: 4, a: 3, c:1} | sort -v
-
-
-ls | sort-by modified
-ls | sort-by name -i
-[[fruit count]; [apple 9] [pear 3] [orange 7]] | sort-by fruit -r
-
-
-source foo.nu
-source ./foo.nu; say-hi
-
-
-source-env foo.nu
-
-
-
-
-'hello' | split chars
-'🇯🇵ほげ' | split chars -g
-
-
-'a--b--c' | split column '--'
-'abc' | split column -c ''
-['a-b' 'c-d'] | split column -
-['a -  b' 'c  -    d'] | split column -r '\s*-\s*'
-
-
-[a, b, c, d, e, f, g] | split list d
-[[1,2], [2,3], [3,4]] | split list [2,3]
-[a, b, c, d, a, e, f, g] | split list a
-[a, b, c, d, a, e, f, g] | split list -r '(b|e)'
-
-
-'abc' | split row ''
-'a--b--c' | split row '--'
-'-a-b-c-' | split row '-'
-'a   b       c' | split row -r '\s+'
-
-
-'hello world' | split words
-'hello to the world' | split words -l 3
-http get https://www.gutenberg.org/files/11/11-0.txt | str downcase | split words -l 2 | uniq -c | sort-by count --reverse | first 10
-
-
-{
+    mkdir foo bar
+    enter foo
+    enter ../bar
+    p
+    p
+    [1, 2, 3] | par-each {|| 2 * $in }
+    [foo, bar, baz] | par-each {|e| $e + '!' } | sort
+    1..3 | enumerate | par-each {|p| update item ($p.item * 2)} | sort-by item | get item
+    [1, 2, 3] | enumerate | par-each { |e| if $e.item == 2 { $"found 2 at ($e.index)!"} }
+    "hi there" | parse "{foo} {bar}"
+    "hi there" | parse -r '(?P<foo>\w+) (?P<bar>\w+)'
+    "foo bar." | parse -r '\s*(?<name>\w+)(?=\.)'
+    "foo! bar." | parse -r '(\w+)(?=\.)|(\w+)(?=!)'
+    " @another(foo bar)   " | parse -r '\s*(?<=[() ])(@\w+)(\([^)]*\))?\s*'
+    "abcd" | parse -r '^a(bc(?=d)|b)cd$'
+    '/home/joe/test.txt' | path basename
+    [[name]; [/home/joe]] | path basename -c [name]
+    '/home/joe/test.txt' | path basename -r 'spam.png'
+    '/home/joe/code/test.txt' | path dirname
+    ls ('.' | path expand) | path dirname -c [name]
+    '/home/joe/code/test.txt' | path dirname -n 2
+    '/home/joe/code/test.txt' | path dirname -n 2 -r /home/viking
+    '/home/joe/todo.txt' | path exists
+    ls | path exists -c [name]
+    '/home/joe/foo/../bar' | path expand
+    ls | path expand -c [name]
+    'foo/../bar' | path expand
+    '/home/viking' | path join spam.txt
+    '/home/viking' | path join spams this_spam.txt
+    ls | path join spam.txt -c [name]
+    ['/', 'home', 'viking', 'spam.txt'] | path join
+    [[parent, stem, extension]; ['/home/viking', 'spam', 'txt']] | path join
+    '/home/viking/spam.txt' | path parse
+    '/home/viking/spam.tar.gz' | path parse -e tar.gz | upsert extension { 'txt' }
+    '/etc/conf.d' | path parse -e ''
+    ls | path parse -c [name]
+    '/home/viking' | path relative-to '/home'
+    ls ~ | path relative-to ~ -c [name]
+    'eggs/bacon/sausage/spam' | path relative-to 'eggs/bacon/sausage'
+    '/home/viking/spam.txt' | path split
+    ls ('.' | path expand) | path split -c [name]
+    '.' | path type
+    ls | path type -c [name]
+    pnet
+    port 3121 4000
+    port
+    [1, 2, 3, 4] | prepend 0
+    [2, 3, 4] | prepend [0, 1]
+    [2, nu, 4, shell] | prepend [0, 1, rocks]
+    print "hello world"
+    print (2 + 3)
+    def spam [] { "spam" }
+    profile {|| spam | str length } -d 2 --source
+    ps
+    ps | sort-by mem | last 5
+    ps | sort-by cpu | last 3
+    ps | where name =~ 'nu'
+    ps | where pid == $nu.pid | get ppid
+    open foo.db | query db "SELECT * FROM Bar"
+    http get https://phoronix.com | query web -q 'header'
+    http get https://en.wikipedia.org/wiki/List_of_cities_in_India_by_population | query web -t [Rank, City, 'Population(2011)[3]', 'Population(2001)', 'State or union territory']
+    http get https://www.nushell.sh | query web -q 'h2, h2 + p' | group 2 | each {rotate --ccw tagline description} | flatten
+    http get https://example.org | query web --query a --attribute href
+    random bool
+    random bool --bias 0.75
+    random chars
+    random chars -l 20
+    random decimal
+    random decimal ..500
+    random decimal 100000..
+    random decimal 1.0..1.1
+    random dice
+    random dice -d 10 -s 12
+    random integer
+    random integer ..500
+    random integer 100000..
+    random integer 1..10
+    random uuid
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | range 4..5
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | range (-2)..
+    [
+        0
+        1
+        2
+        3
+        4
+        5
+    ] | range (-3)..-2
+    [1, 2, 3, 4] | reduce {|it, acc| $it + $acc }
+    [8, 7, 6] | enumerate | reduce -f 0 {|it, acc| $acc + $it.item + $it.index }
+    [1, 2, 3, 4] | reduce -f 10 {|it, acc| $acc + $it }
+    [i, o, t] | reduce -f "Arthur, King of the Britons" {|it, acc| $acc | str replace -a $it "X" }
+    ['foo.gz', 'bar.gz', 'baz.gz'] | enumerate | reduce -f '' {|str all| $"($all)(if $str.index != 0 {'; '})($str.index + 1)-($str.item)" }
+    "hello world" | regex '(?P<first>\w+) (?P<second>\w+)'
+    register ~/.cargo/bin/nu_plugin_query
+    let plugin = ((which nu).path.0 | path dirname | path join 'nu_plugin_query')
+    nu -c $'register ($plugin); version'
+    ls | reject modified
+    [[a, b]; [1, 2]] | reject a
+    {a: 1, b: 2} | reject a
+    {
+        a: {b: 3, c: 5}
+    } | reject a.b
+    [[a, b]; [1, 2]] | rename my_column
+    [[a, b, c]; [1, 2, 3]] | rename eggs ham bacon
+    [[a, b, c]; [1, 2, 3]] | rename -c [a, ham]
+    {a: 1, b: 2} | rename x y
+    def foo [] { return }
+    [0, 1, 2, 3] | reverse
+    [
+        {a: 1}
+        {a: 2}
+    ] | reverse
+    rm file.txt
+    rm --trash file.txt
+    rm --permanent file.txt
+    rm --force file.txt
+    ls | where size == 0KB and type == file | each { rm $in.name } | null
+    [[a, b]; [1, 2], [3, 4], [5, 6]] | roll down
+    {a: 1, b: 2, c: 3} | roll left
+    [[a, b, c]; [1, 2, 3], [4, 5, 6]] | roll left
+    [[a, b, c]; [1, 2, 3], [4, 5, 6]] | roll left --cells-only
+    {a: 1, b: 2, c: 3} | roll right
+    [[a, b, c]; [1, 2, 3], [4, 5, 6]] | roll right
+    [[a, b, c]; [1, 2, 3], [4, 5, 6]] | roll right --cells-only
+    [[a, b]; [1, 2], [3, 4], [5, 6]] | roll up
+    {a: 1, b: 2} | rotate
+    [[a, b]; [1, 2], [3, 4], [5, 6]] | rotate
+    [[a, b]; [1, 2]] | rotate col_a col_b
+    [[a, b]; [1, 2]] | rotate --ccw
+    [[a, b]; [1, 2], [3, 4], [5, 6]] | rotate --ccw
+    [[a, b]; [1, 2]] | rotate --ccw col_a col_b
+    run-external "echo" "-n" "hello"
+    run-external --redirect-stdout "echo" "-n" "hello" | split chars
+    'save me' | save foo.txt
+    'append me' | save --append foo.txt
+    {a: 1, b: 2} | save foo.json
+    do -i { } | save foo.txt --stderr foo.txt
+    do -i { } | save foo.txt --stderr bar.txt
+    open foo.db | schema
+    [
+        {a: a, b: b}
+    ] | select a
+    {a: a, b: b} | select a
+    ls | select name
+    ls | select 0 1 2 3
+    seq 1 10
+    seq 1.0 0.1 2.0
+    seq 1 5 | str join '|'
+    seq char a e
+    seq char a e | str join '|'
+    seq date --days 10
+    seq date --days 10 -r
+    seq date --days 10 -o '%m/%d/%Y' -r
+    seq date -b '2020-01-01' -e '2020-01-10'
+    seq date -b '2020-01-01' -e '2020-01-31' -n 5
+    enter ..
+    shells
+    shells | where active == true
+    [[version, patch]; ['1.0.0', false], ['3.0.1', true], ['2.0.0', false]] | shuffle
+    "There are seven words in this sentence" | size
+    '今天天气真好' | size
+    "Amélie Amelie" | size
+    [2, 4, 6, 8] | skip 1
+    [[editions]; [2015], [2018], [2021]] | skip 2
+    [-2, 0, 2, -1] | skip until {|x| $x > 0 }
+    let cond = {|x| $x > 0 }
+    [-2, 0, 2, -1] | skip until $cond
+    [
+        {a: -2}
+        {a: 0}
+        {a: 2}
+        {a: -1}
+    ] | skip until {|x| $x.a > 0 }
+    [-2, 0, 2, -1] | skip while {|x| $x < 0 }
+    let cond = {|x| $x < 0 }
+    [-2, 0, 2, -1] | skip while $cond
+    [
+        {a: -2}
+        {a: 0}
+        {a: 2}
+        {a: -1}
+    ] | skip while {|x| $x.a < 0 }
+    sleep 1sec
+    [2, 0, 1] | sort
+    [2, 0, 1] | sort -r
+    [betty, amy, sarah] | sort
+    [betty, amy, sarah] | sort -r
+    [airplane, Truck, Car] | sort -i
+    [airplane, Truck, Car] | sort -i -r
+    {b: 3, a: 4} | sort
+    {b: 4, a: 3, c: 1} | sort -v
+    ls | sort-by modified
+    ls | sort-by name -i
+    [[fruit, count]; [apple, 9], [pear, 3], [orange, 7]] | sort-by fruit -r
+    source foo.nu
+    source ./foo.nu
+    say-hi
+    source-env foo.nu
+    'hello' | split chars
+    '🇯🇵ほげ' | split chars -g
+    'a--b--c' | split column '--'
+    'abc' | split column -c ''
+    ['a-b', 'c-d'] | split column -
+    ['a -  b', 'c  -    d'] | split column -r '\s*-\s*'
+    [
+        a
+        b
+        c
+        d
+        e
+        f
+        g
+    ] | split list d
+    [
+        [1, 2]
+        [2, 3]
+        [3, 4]
+    ] | split list [2, 3]
+    [
+        a
+        b
+        c
+        d
+        a
+        e
+        f
+        g
+    ] | split list a
+    [
+        a
+        b
+        c
+        d
+        a
+        e
+        f
+        g
+    ] | split list -r '(b|e)'
+    'abc' | split row ''
+    'a--b--c' | split row '--'
+    '-a-b-c-' | split row '-'
+    'a   b       c' | split row -r '\s+'
+    'hello world' | split words
+    'hello to the world' | split words -l 3
+    http get https://www.gutenberg.org/files/11/11-0.txt | str downcase | split words -l 2 | uniq -c | sort-by count --reverse | first 10
+    {
         '2019': [
-          { name: 'andres', lang: 'rb', year: '2019' },
-          { name: 'jt', lang: 'rs', year: '2019' }
-        ],
+            {name: 'andres', lang: 'rb', year: '2019'}
+            {name: 'jt', lang: 'rs', year: '2019'}
+        ]
         '2021': [
-          { name: 'storm', lang: 'rs', 'year': '2021' }
+            {name: 'storm', lang: 'rs', 'year': '2021'}
         ]
     } | split-by lang
-
-
-start file.txt
-start file.jpg
-start .
-start file.pdf
-start https://www.nushell.sh
-
-
-
-
- 'NuShell' | str camel-case
-'this-is-the-first-case' | str camel-case
- 'this_is_the_second_case' | str camel-case
-[[lang, gems]; [nu_test, 100]] | str camel-case lang
-
-
-'good day' | str capitalize
-'anton' | str capitalize
-[[lang, gems]; [nu_test, 100]] | str capitalize lang
-
-
-
-
-'my_library.rb' | str contains '.rb'
-'my_library.rb' | str contains -i '.RB'
- [[ColA ColB]; [test 100]] | str contains 'e' ColA
- [[ColA ColB]; [test 100]] | str contains -i 'E' ColA
- [[ColA ColB]; [test hello]] | str contains 'e' ColA ColB
-'hello' | str contains 'banana'
-[one two three] | str contains o
-[one two three] | str contains -n o
-
-
-'nushell' | str distance 'nutshell'
-[{a: 'nutshell' b: 'numetal'}] | str distance 'nushell' 'a' 'b'
-
-
-'NU' | str downcase
-'TESTa' | str downcase
-[[ColA ColB]; [Test ABC]] | str downcase ColA
-[[ColA ColB]; [Test ABC]] | str downcase ColA ColB
-
-
-'my_library.rb' | str ends-with '.rb'
-'my_library.rb' | str ends-with '.txt'
-'my_library.rb' | str ends-with -i '.RB'
-
-
-
-
- 'my_library.rb' | str index-of '.rb'
-'🇯🇵ほげ ふが ぴよ' | str index-of -g 'ふが'
- '.rb.rb' | str index-of '.rb' -r 1..
- '123456' | str index-of '6' -r ..4
- '123456' | str index-of '3' -r 1..4
- '/this/is/some/path/file.txt' | str index-of '/' -e
-
-
-['nu', 'shell'] | str join
-['nu', 'shell'] | str join '-'
-
-
-'NuShell' | str kebab-case
-'thisIsTheFirstCase' | str kebab-case
-'THIS_IS_THE_SECOND_CASE' | str kebab-case
-[[lang, gems]; [nuTest, 100]] | str kebab-case lang
-
-
-'hello' | str length
-'🇯🇵ほげ ふが ぴよ' | str length -g
-['hi' 'there'] | str length
-
-
-
-
-'nu-shell' | str pascal-case
-'this-is-the-first-case' | str pascal-case
-'this_is_the_second_case' | str pascal-case
-[[lang, gems]; [nu_test, 100]] | str pascal-case lang
-
-
-'my_library.rb' | str replace '(.+).rb' '$1.nu'
-'abc abc abc' | str replace -a 'b' 'z'
-[[ColA ColB ColC]; [abc abc ads]] | str replace -a 'b' 'z' ColA ColC
-'dogs_$1_cats' | str replace '\$1' '$2' -n
-'c:\some\cool\path' | str replace 'c:\some\cool' '~' -s
-'abc abc abc' | str replace -a 'b' 'z' -s
-'a successful b' | str replace '\b([sS])uc(?:cs|s?)e(ed(?:ed|ing|s?)|ss(?:es|ful(?:ly)?|i(?:ons?|ve(?:ly)?)|ors?)?)\b' '${1}ucce$2'
-'GHIKK-9+*' | str replace '[*[:xdigit:]+]' 'z'
-
-
-'Nushell' | str reverse
-['Nushell' 'is' 'cool'] | str reverse
-
-
-
-
- "NuShell" | str screaming-snake-case
- "this_is_the_second_case" | str screaming-snake-case
-"this-is-the-first-case" | str screaming-snake-case
-[[lang, gems]; [nu_test, 100]] | str screaming-snake-case lang
-
-
- "NuShell" | str snake-case
- "this_is_the_second_case" | str snake-case
-"this-is-the-first-case" | str snake-case
-[[lang, gems]; [nuTest, 100]] | str snake-case lang
-
-
-'my_library.rb' | str starts-with 'my'
-'Cargo.toml' | str starts-with 'Car'
-'Cargo.toml' | str starts-with '.toml'
-'Cargo.toml' | str starts-with -i 'cargo'
-
-
- 'good nushell' | str substring 5..12
- '🇯🇵ほげ ふが ぴよ' | str substring -g 4..6
-
-
-'nu-shell' | str title-case
-'this is a test case' | str title-case
-[[title, count]; ['nu test', 100]] | str title-case title
-
-
-
-
-
-
-
-
-'Nu shell ' | str trim
-'=== Nu shell ===' | str trim -c '=' | str trim
-' Nu shell ' | str trim -l
-'=== Nu shell ===' | str trim -c '='
-' Nu shell ' | str trim -r
-'=== Nu shell ===' | str trim -r -c '='
-
-
-'nu' | str upcase
-
-
-sys
-(sys).host | get name
-(sys).host.name
-
-
-ls | table -n 1
-[[a b]; [1 2] [3 4]] | table
-[[a b]; [1 2] [2 [4 4]]] | table --expand
-[[a b]; [1 2] [2 [4 4]]] | table --collapse
-
-
-[1 2 3] | take 1
-[1 2 3] | take 2
-[[editions]; [2015] [2018] [2021]] | take 2
-0x[01 23 45] | take 2
-1..10 | take 3
-
-
-[-1 -2 9 1] | take until {|x| $x > 0 }
-let cond = {|x| $x > 0 }; [-1 -2 9 1] | take until $cond
-[{a: -1} {a: -2} {a: 9} {a: 1}] | take until {|x| $x.a > 0 }
-
-
-[-1 -2 9 1] | take while {|x| $x < 0 }
-let cond = {|x| $x < 0 }; [-1 -2 9 1] | take while $cond
-[{a: -1} {a: -2} {a: 9} {a: 1}] | take while {|x| $x.a < 0 }
-
-
-term size
-(term size).columns
-(term size).rows
-
-
-timeit { sleep 500ms }
-http get https://www.nushell.sh/book/ | timeit { split chars }
-timeit ls -la
-
-
-
-
-[[foo bar]; [1 2]] | to csv
-[[foo bar]; [1 2]] | to csv -s ';' 
-{a: 1 b: 2} | to csv
-
-
-[[foo bar]; [1 2]] | to html
-[[foo bar]; [1 2]] | to html --partial
-[[foo bar]; [1 2]] | to html --dark
-
-
-[a b c] | to json
-[Joe Bob Sam] | to json -i 4
-[1 2 3] | to json -r
-
-
-[[foo bar]; [1 2]] | to md
-[[foo bar]; [1 2]] | to md --pretty
-[{"H1": "Welcome to Nushell" } [[foo bar]; [1 2]]] | to md --per-element --pretty
-[0 1 2] | to md --pretty
-
-
-[1 2 3] | to nuon
-[1 2 3] | to nuon --indent 2
-[1 2 3] | to nuon --indent 2 --raw
-{date: 2000-01-01, data: [1 [2 3] 4.56]} | to nuon --indent 2
-
-
-1 | to text
-git help -a | lines | find -r '^ ' | to text
-ls | to text
-
-
-{foo: 1 bar: 'qwe'} | to toml
-
-
-[[foo bar]; [1 2]] | to tsv
-{a: 1 b: 2} | to tsv
-
-
-{tag: note attributes: {} content : [{tag: remember attributes: {} content : [{tag: null attrs: null content : Event}]}]} | to xml
-{tag: note content : [{tag: remember content : [Event]}]} | to xml
-{tag: note content : [{tag: remember content : [Event]}]} | to xml -p 3
-
-
-[[foo bar]; ["1" "2"]] | to yaml
-
-
-touch fixture.json
-touch a b c
-touch -m fixture.json
-touch -m -d "yesterday" a b c
-touch -m -r fixture.json d e
-touch -a -d "August 24, 2019; 12:30:30" fixture.json
-
-
-[[c1 c2]; [1 2]] | transpose
-[[c1 c2]; [1 2]] | transpose key val
-[[c1 c2]; [1 2]] | transpose -i val
-{c1: 1, c2: 2} | transpose | transpose -i -r -d
-
-
-try { asdfasdf }
-try { asdfasdf } catch { echo 'missing' } 
-
-
-tutor begin
-tutor -f "$in"
-
-
-[2 3 3 4] | uniq
-[1 2 2] | uniq -d
-[1 2 2] | uniq -u
-['hello' 'goodbye' 'Hello'] | uniq -i
-[1 2 2] | uniq -c
-
-
-[[fruit count]; [apple 9] [apple 2] [pear 3] [orange 7]] | uniq-by fruit
-
-
-{'name': 'nu', 'stars': 5} | update name 'Nushell'
-[[count fruit]; [1 'apple']] | enumerate | update item.count {|e| ($e.item.fruit | str length) + $e.index } | get item
-[[project, authors]; ['nu', ['Andrés', 'JT', 'Yehuda']]] | update authors {|row| $row.authors | str join ','}
-[[project, authors]; ['nu', ['Andrés', 'JT', 'Yehuda']]] | update authors {|| str join ','}
-
-
-[
-        ["2021-04-16", "2021-06-10", "2021-09-18", "2021-10-15", "2021-11-16", "2021-11-17", "2021-11-18"];
-        [          37,            0,            0,            0,           37,            0,            0]
-    ] | update cells { |value|
+    start file.txt
+    start file.jpg
+    start .
+    start file.pdf
+    start https://www.nushell.sh
+    'NuShell' | str camel-case
+    'this-is-the-first-case' | str camel-case
+    'this_is_the_second_case' | str camel-case
+    [[lang, gems]; [nu_test, 100]] | str camel-case lang
+    'good day' | str capitalize
+    'anton' | str capitalize
+    [[lang, gems]; [nu_test, 100]] | str capitalize lang
+    'my_library.rb' | str contains '.rb'
+    'my_library.rb' | str contains -i '.RB'
+    [[ColA, ColB]; [test, 100]] | str contains 'e' ColA
+    [[ColA, ColB]; [test, 100]] | str contains -i 'E' ColA
+    [[ColA, ColB]; [test, hello]] | str contains 'e' ColA ColB
+    'hello' | str contains 'banana'
+    [one, two, three] | str contains o
+    [one, two, three] | str contains -n o
+    'nushell' | str distance 'nutshell'
+    [
+        {a: 'nutshell', b: 'numetal'}
+    ] | str distance 'nushell' 'a' 'b'
+    'NU' | str downcase
+    'TESTa' | str downcase
+    [[ColA, ColB]; [Test, ABC]] | str downcase ColA
+    [[ColA, ColB]; [Test, ABC]] | str downcase ColA ColB
+    'my_library.rb' | str ends-with '.rb'
+    'my_library.rb' | str ends-with '.txt'
+    'my_library.rb' | str ends-with -i '.RB'
+    'my_library.rb' | str index-of '.rb'
+    '🇯🇵ほげ ふが ぴよ' | str index-of -g 'ふが'
+    '.rb.rb' | str index-of '.rb' -r 1..
+    '123456' | str index-of '6' -r ..4
+    '123456' | str index-of '3' -r 1..4
+    '/this/is/some/path/file.txt' | str index-of '/' -e
+    ['nu', 'shell'] | str join
+    ['nu', 'shell'] | str join '-'
+    'NuShell' | str kebab-case
+    'thisIsTheFirstCase' | str kebab-case
+    'THIS_IS_THE_SECOND_CASE' | str kebab-case
+    [[lang, gems]; [nuTest, 100]] | str kebab-case lang
+    'hello' | str length
+    '🇯🇵ほげ ふが ぴよ' | str length -g
+    ['hi', 'there'] | str length
+    'nu-shell' | str pascal-case
+    'this-is-the-first-case' | str pascal-case
+    'this_is_the_second_case' | str pascal-case
+    [[lang, gems]; [nu_test, 100]] | str pascal-case lang
+    'my_library.rb' | str replace '(.+).rb' '$1.nu'
+    'abc abc abc' | str replace -a 'b' 'z'
+    [[ColA, ColB, ColC]; [abc, abc, ads]] | str replace -a 'b' 'z' ColA ColC
+    'dogs_$1_cats' | str replace '\$1' '$2' -n
+    'c:\some\cool\path' | str replace 'c:\some\cool' '~' -s
+    'abc abc abc' | str replace -a 'b' 'z' -s
+    'a successful b' | str replace '\b([sS])uc(?:cs|s?)e(ed(?:ed|ing|s?)|ss(?:es|ful(?:ly)?|i(?:ons?|ve(?:ly)?)|ors?)?)\b' '${1}ucce$2'
+    'GHIKK-9+*' | str replace '[*[:xdigit:]+]' 'z'
+    'Nushell' | str reverse
+    ['Nushell', 'is', 'cool'] | str reverse
+    "NuShell" | str screaming-snake-case
+    "this_is_the_second_case" | str screaming-snake-case
+    "this-is-the-first-case" | str screaming-snake-case
+    [[lang, gems]; [nu_test, 100]] | str screaming-snake-case lang
+    "NuShell" | str snake-case
+    "this_is_the_second_case" | str snake-case
+    "this-is-the-first-case" | str snake-case
+    [[lang, gems]; [nuTest, 100]] | str snake-case lang
+    'my_library.rb' | str starts-with 'my'
+    'Cargo.toml' | str starts-with 'Car'
+    'Cargo.toml' | str starts-with '.toml'
+    'Cargo.toml' | str starts-with -i 'cargo'
+    'good nushell' | str substring 5..12
+    '🇯🇵ほげ ふが ぴよ' | str substring -g 4..6
+    'nu-shell' | str title-case
+    'this is a test case' | str title-case
+    [[title, count]; ['nu test', 100]] | str title-case title
+    'Nu shell ' | str trim
+    '=== Nu shell ===' | str trim -c '=' | str trim
+    ' Nu shell ' | str trim -l
+    '=== Nu shell ===' | str trim -c '='
+    ' Nu shell ' | str trim -r
+    '=== Nu shell ===' | str trim -r -c '='
+    'nu' | str upcase
+    sys
+    (sys).host | get name
+    (sys).host.name
+    ls | table -n 1
+    [[a, b]; [1, 2], [3, 4]] | table
+    [[a, b]; [1, 2], [2, [4, 4]]] | table --expand
+    [[a, b]; [1, 2], [2, [4, 4]]] | table --collapse
+    [1, 2, 3] | take 1
+    [1, 2, 3] | take 2
+    [[editions]; [2015], [2018], [2021]] | take 2
+    0x[01 23 45] | take 2
+    1..10 | take 3
+    [-1, -2, 9, 1] | take until {|x| $x > 0 }
+    let cond = {|x| $x > 0 }
+    [-1, -2, 9, 1] | take until $cond
+    [
+        {a: -1}
+        {a: -2}
+        {a: 9}
+        {a: 1}
+    ] | take until {|x| $x.a > 0 }
+    [-1, -2, 9, 1] | take while {|x| $x < 0 }
+    let cond = {|x| $x < 0 }
+    [-1, -2, 9, 1] | take while $cond
+    [
+        {a: -1}
+        {a: -2}
+        {a: 9}
+        {a: 1}
+    ] | take while {|x| $x.a < 0 }
+    term size
+    (term size).columns
+    (term size).rows
+    timeit { sleep 500ms }
+    http get https://www.nushell.sh/book/ | timeit { split chars }
+    timeit ls -la
+    [[foo, bar]; [1, 2]] | to csv
+    [[foo, bar]; [1, 2]] | to csv -s ';'
+    {a: 1, b: 2} | to csv
+    [[foo, bar]; [1, 2]] | to html
+    [[foo, bar]; [1, 2]] | to html --partial
+    [[foo, bar]; [1, 2]] | to html --dark
+    [a, b, c] | to json
+    [Joe, Bob, Sam] | to json -i 4
+    [1, 2, 3] | to json -r
+    [[foo, bar]; [1, 2]] | to md
+    [[foo, bar]; [1, 2]] | to md --pretty
+    [
+        {"H1": "Welcome to Nushell"}
+        [[foo, bar]; [1, 2]]
+    ] | to md --per-element --pretty
+    [0, 1, 2] | to md --pretty
+    [1, 2, 3] | to nuon
+    [1, 2, 3] | to nuon --indent 2
+    [1, 2, 3] | to nuon --indent 2 --raw
+    {
+        date: 2000-01-01
+        data: [
+            1
+            [2, 3]
+            4.56
+        ]
+    } | to nuon --indent 2
+    1 | to text
+    git help -a | lines | find -r '^ ' | to text
+    ls | to text
+    {foo: 1, bar: 'qwe'} | to toml
+    [[foo, bar]; [1, 2]] | to tsv
+    {a: 1, b: 2} | to tsv
+    {
+        tag: note
+        attributes: {}
+        content: [
+            {
+                tag: remember
+                attributes: {}
+                content: [
+                    {tag: null, attrs: null, content: Event}
+                ]
+            }
+        ]
+    } | to xml
+    {
+        tag: note
+        content: [
+            {
+                tag: remember
+                content: [Event]
+            }
+        ]
+    } | to xml
+    {
+        tag: note
+        content: [
+            {
+                tag: remember
+                content: [Event]
+            }
+        ]
+    } | to xml -p 3
+    [[foo, bar]; ["1", "2"]] | to yaml
+    touch fixture.json
+    touch a b c
+    touch -m fixture.json
+    touch -m -d "yesterday" a b c
+    touch -m -r fixture.json d e
+    touch -a -d "August 24, 2019; 12:30:30" fixture.json
+    [[c1, c2]; [1, 2]] | transpose
+    [[c1, c2]; [1, 2]] | transpose key val
+    [[c1, c2]; [1, 2]] | transpose -i val
+    {c1: 1, c2: 2} | transpose | transpose -i -r -d
+    try { asdfasdf }
+    try { asdfasdf } catch { echo 'missing' }
+    tutor begin
+    tutor -f "$in"
+    [2, 3, 3, 4] | uniq
+    [1, 2, 2] | uniq -d
+    [1, 2, 2] | uniq -u
+    ['hello', 'goodbye', 'Hello'] | uniq -i
+    [1, 2, 2] | uniq -c
+    [[fruit, count]; [apple, 9], [apple, 2], [pear, 3], [orange, 7]] | uniq-by fruit
+    {'name': 'nu', 'stars': 5} | update name 'Nushell'
+    [[count, fruit]; [1, 'apple']] | enumerate | update item.count {|e| ($e.item.fruit | str length) + $e.index } | get item
+    [[project, authors]; ['nu', ['Andrés', 'JT', 'Yehuda']]] | update authors {|row| $row.authors | str join ','}
+    [[project, authors]; ['nu', ['Andrés', 'JT', 'Yehuda']]] | update authors {|| str join ','}
+    [["2021-04-16", "2021-06-10", "2021-09-18", "2021-10-15", "2021-11-16", "2021-11-17", "2021-11-18"]; [37, 0, 0, 0, 37, 0, 0]] | update cells { |value|
           if $value == 0 {
             ""
           } else {
             $value
           }
     }
-[
-        ["2021-04-16", "2021-06-10", "2021-09-18", "2021-10-15", "2021-11-16", "2021-11-17", "2021-11-18"];
-        [          37,            0,            0,            0,           37,            0,            0]
-    ] | update cells -c ["2021-11-18", "2021-11-17"] { |value|
+    [["2021-04-16", "2021-06-10", "2021-09-18", "2021-10-15", "2021-11-16", "2021-11-17", "2021-11-18"]; [37, 0, 0, 0, 37, 0, 0]] | update cells -c ["2021-11-18", "2021-11-17"] { |value|
             if $value == 0 {
               ""
             } else {
               $value
             }
     }
-
-
-{'name': 'nu', 'stars': 5} | upsert name 'Nushell'
-[[name lang]; [Nushell ''] [Reedline '']] | upsert lang 'Rust'
-{'name': 'nu', 'stars': 5} | upsert language 'Rust'
-[[count fruit]; [1 'apple']] | enumerate | upsert item.count {|e| ($e.item.fruit | str length) + $e.index } | get item
-[1 2 3] | upsert 0 2
-[1 2 3] | upsert 3 4
-
-
-
-
-{ mode:normal userid:31415 } | url build-query
-[[foo bar]; ["1" "2"]] | url build-query
-{a:"AT&T", b: "AT T"} | url build-query
-
-
-'https://example.com/foo bar' | url encode
-['https://example.com/foo bar' 'https://example.com/a>b' '中文字/eng/12 34'] | url encode
-'https://example.com/foo bar' | url encode --all
-
-
-{
-        "scheme": "http",
-        "username": "",
-        "password": "",
-        "host": "www.pixiv.net",
-        "port": "",
-        "path": "/member_illust.php",
-        "query": "mode=medium&illust_id=99260204",
-        "fragment": "",
-        "params":
-        {
-            "mode": "medium",
-            "illust_id": "99260204"
-        }
+    {'name': 'nu', 'stars': 5} | upsert name 'Nushell'
+    [[name, lang]; [Nushell, ''], [Reedline, '']] | upsert lang 'Rust'
+    {'name': 'nu', 'stars': 5} | upsert language 'Rust'
+    [[count, fruit]; [1, 'apple']] | enumerate | upsert item.count {|e| ($e.item.fruit | str length) + $e.index } | get item
+    [1, 2, 3] | upsert 0 2
+    [1, 2, 3] | upsert 3 4
+    {mode: normal, userid: 31415} | url build-query
+    [[foo, bar]; ["1", "2"]] | url build-query
+    {a: "AT&T", b: "AT T"} | url build-query
+    'https://example.com/foo bar' | url encode
+    ['https://example.com/foo bar', 'https://example.com/a>b', '中文字/eng/12 34'] | url encode
+    'https://example.com/foo bar' | url encode --all
+    {
+        "scheme": "http"
+        "username": ""
+        "password": ""
+        "host": "www.pixiv.net"
+        "port": ""
+        "path": "/member_illust.php"
+        "query": "mode=medium&illust_id=99260204"
+        "fragment": ""
+        "params": {"mode": "medium", "illust_id": "99260204"}
     } | url join
-{
-        "scheme": "http",
-        "username": "user",
-        "password": "pwd",
-        "host": "www.pixiv.net",
-        "port": "1234",
-        "query": "test=a",
+    {
+        "scheme": "http"
+        "username": "user"
+        "password": "pwd"
+        "host": "www.pixiv.net"
+        "port": "1234"
+        "query": "test=a"
         "fragment": ""
     } | url join
-{
-        "scheme": "http",
-        "host": "www.pixiv.net",
-        "port": "1234",
-        "path": "user",
+    {
+        "scheme": "http"
+        "host": "www.pixiv.net"
+        "port": "1234"
+        "path": "user"
         "fragment": "frag"
     } | url join
-
-
-'http://user123:pass567@www.example.com:8081/foo/bar?param1=section&p2=&f[name]=vldc#hello' | url parse
-
-
-module spam { export def foo [] { "foo" } }; use spam foo; foo
-module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }; use foo bar; bar; $env.FOO_BAR
-
-
-{ mode:normal userid:31415 } | values
-{ f:250 g:191 c:128 d:1024 e:2000 a:16 b:32 } | values
-[[name meaning]; [ls list] [mv move] [cd 'change directory']] | values
-
-
-version
-
-
-
-
-view files
-
-
-let abc = {|| echo 'hi' }; view source $abc
-def hi [] { echo 'Hi!' }; view source hi
-def-env foo [] { let-env BAR = 'BAZ' }; view source foo
-module mod-foo { export-env { let-env FOO_ENV = 'BAZ' } }; view source mod-foo
-alias hello = echo hi; view source hello
-
-
-some | pipeline | or | variable | debug -r; view span 1 2
-
-
-watch . --glob=**/*.rs {|| cargo test }
-watch . { |op, path, new_path| $"($op) ($path) ($new_path)"}
-watch /foo/bar { |op, path| $"($op) - ($path)(char nl)" | save --append changes_in_bar.log }
-
-
-[{a: 1} {a: 2}] | where a > 1
-[1 2] | where {|x| $x > 1}
-ls | where size > 2kb
-ls | where type == file
-ls | where name =~ "Car"
-ls | where modified >= (date now) - 2wk
-ls | where type == file | sort-by name -n | enumerate | where {|e| $e.item.name !~ $'^($e.index + 1)' } | each {|| get item }
-
-
-which myapp
-
-
-mut x = 0; while $x < 10 { $x = $x + 1 }
-
-
-[1 2 3 4] | window 2
-[1, 2, 3, 4, 5, 6, 7, 8] | window 2 --stride 3
-[1, 2, 3, 4, 5] | window 3 --stride 3 --remainder
-
-
-with-env [MYENV "my env value"] { $env.MYENV }
-with-env [X Y W Z] { $env.X }
-with-env [[X W]; [Y Z]] { $env.W }
-with-env {X: "Y", W: "Z"} { [$env.X $env.W] }
-
-
-[1 2 3] | wrap num
-1..3 | wrap num
-
-
-
-
-[1 2] | zip [3 4]
-1..3 | zip 4..6
-glob *.ogg | zip ['bang.ogg', 'fanfare.ogg', 'laser.ogg'] | each {|| mv $in.0 $in.1 }
-
-
+    'http://user123:pass567@www.example.com:8081/foo/bar?param1=section&p2=&f[name]=vldc#hello' | url parse
+    module spam {
+        export def foo [] { "foo" }
+    }
+    use spam foo
+    foo
+    module foo { export def-env bar [] { let-env FOO_BAR = "BAZ" } }
+    use foo bar
+    bar
+    $env.FOO_BAR
+    {mode: normal, userid: 31415} | values
+    {
+        f: 250
+        g: 191
+        c: 128
+        d: 1024
+        e: 2000
+        a: 16
+        b: 32
+    } | values
+    [[name, meaning]; [ls, list], [mv, move], [cd, 'change directory']] | values
+    version
+    view files
+    let abc = {|| echo 'hi' }
+    view source $abc
+    def hi [] { echo 'Hi!' }
+    view source hi
+    def-env foo [] { let-env BAR = 'BAZ' }
+    view source foo
+    module mod-foo { export-env { let-env FOO_ENV = 'BAZ' } }
+    view source mod-foo
+    alias hello = echo hi
+    view source hello
+    some | pipeline | or | variable | debug -r
+    view span 1 2
+    watch . --glob=**/*.rs {|| cargo test }
+    watch . { |op, path, new_path| $"($op) ($path) ($new_path)"}
+    watch /foo/bar { |op, path| $"($op) - ($path)(char nl)" | save --append changes_in_bar.log }
+    [
+        {a: 1}
+        {a: 2}
+    ] | where a > 1
+    [1, 2] | where {|x| $x > 1}
+    ls | where size > 2kb
+    ls | where type == file
+    ls | where name =~ "Car"
+    ls | where modified >= (date now) - 2wk
+    ls | where type == file | sort-by name -n | enumerate | where {|e| $e.item.name !~ $'^($e.index + 1)' } | each {|| get item }
+    which myapp
+    mut x = 0
+    while $x < 10 { $x = ($x + 1) }
+    [1, 2, 3, 4] | window 2
+    [
+        1
+        2
+        3
+        4
+        5
+        6
+        7
+        8
+    ] | window 2 --stride 3
+    [1, 2, 3, 4, 5] | window 3 --stride 3 --remainder
+    with-env [MYENV, "my env value"] { $env.MYENV }
+    with-env [X, Y, W, Z] { $env.X }
+    with-env [
+        [X, W]
+    ] { $env.W }
+    with-env {X: "Y", W: "Z"} { [$env.X $env.W] }
+    [1, 2, 3] | wrap num
+    1..3 | wrap num
+    [1, 2] | zip [3, 4]
+    1..3 | zip 4..6
+    glob *.ogg | zip ['bang.ogg', 'fanfare.ogg', 'laser.ogg'] | each {|| mv $in.0 $in.1 }
+)
+)
diff --git a/src/config.rs b/src/config.rs
index b4cb598..1e54a19 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -5,6 +5,7 @@ use std::convert::TryFrom;
 use crate::config_error::ConfigError;
 use nu_protocol::Value;
 
+/// Configuration options for the formatter
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Config {
     pub indent: usize,
@@ -15,22 +16,22 @@ pub struct Config {
 
 impl Default for Config {
     fn default() -> Self {
-        Config {
+        Self {
             indent: 4,
             line_length: 80,
             margin: 1,
-            excludes: vec![],
+            excludes: Vec::new(),
         }
     }
 }
 
 impl Config {
     pub fn new(tab_spaces: usize, max_width: usize, margin: usize) -> Self {
-        Config {
+        Self {
             indent: tab_spaces,
             line_length: max_width,
             margin,
-            excludes: vec![],
+            excludes: Vec::new(),
         }
     }
 }
@@ -40,83 +41,70 @@ impl TryFrom<Value> for Config {
 
     fn try_from(value: Value) -> Result<Self, Self::Error> {
         let mut config = Config::default();
-        match value {
-            Value::Nothing { .. } => (),
-            Value::Record { val: record, .. } => {
-                for (key, value) in record.iter() {
-                    match key.as_str() {
-                        "indent" => {
-                            let indent = parse_value_to_usize(key, value)?;
-                            config.indent = indent;
-                        }
-                        "line_length" => {
-                            let line_length = parse_value_to_usize(key, value)?;
-                            config.line_length = line_length;
-                        }
-                        "margin" => {
-                            let margin = parse_value_to_usize(key, value)?;
-                            config.margin = margin;
-                        }
-                        "exclude" => {
-                            let excludes = parse_excludes(value)?;
-                            config.excludes = excludes;
-                        }
-                        unknown => return Err(ConfigError::UnknownOption(unknown.to_string())),
-                    }
-                }
-            }
-            _ => {
-                return Err(ConfigError::InvalidFormat);
+
+        let Value::Record { val: record, .. } = value else {
+            // Nothing means use defaults
+            if matches!(value, Value::Nothing { .. }) {
+                return Ok(config);
             }
+            return Err(ConfigError::InvalidFormat);
         };
+
+        for (key, value) in record.iter() {
+            match key.as_str() {
+                "indent" => config.indent = parse_positive_int(key, value)?,
+                "line_length" => config.line_length = parse_positive_int(key, value)?,
+                "margin" => config.margin = parse_positive_int(key, value)?,
+                "exclude" => config.excludes = parse_string_list(value)?,
+                unknown => return Err(ConfigError::UnknownOption(unknown.to_string())),
+            }
+        }
+
         Ok(config)
     }
 }
 
-fn parse_value_to_usize(key: &str, value: &Value) -> Result<usize, ConfigError> {
-    match value {
-        Value::Int { val, .. } => {
-            if *val <= 0 {
-                return Err(ConfigError::InvalidOptionValue(
-                    key.to_string(),
-                    format!("{}", val),
-                    "a positive number",
-                ));
-            }
-            Ok(*val as usize)
-        }
-        other => Err(ConfigError::InvalidOptionType(
+/// Parse a value as a positive integer (usize)
+fn parse_positive_int(key: &str, value: &Value) -> Result<usize, ConfigError> {
+    let Value::Int { val, .. } = value else {
+        return Err(ConfigError::InvalidOptionType(
             key.to_string(),
-            other.get_type().to_string(),
+            value.get_type().to_string(),
             "number",
-        )),
+        ));
+    };
+
+    if *val <= 0 {
+        return Err(ConfigError::InvalidOptionValue(
+            key.to_string(),
+            val.to_string(),
+            "a positive number",
+        ));
     }
+
+    Ok(*val as usize)
 }
 
-fn parse_excludes(value: &Value) -> Result<Vec<String>, ConfigError> {
-    match value {
-        Value::List { vals, .. } => {
-            let mut excludes = vec![];
-            for val in vals {
-                match val {
-                    Value::String { val, .. } => {
-                        excludes.push(val.clone());
-                    }
-                    other => {
-                        return Err(ConfigError::InvalidOptionType(
-                            "excludes".to_string(),
-                            other.get_type().to_string(),
-                            "list<string>",
-                        ));
-                    }
-                }
-            }
-            Ok(excludes)
-        }
-        other => Err(ConfigError::InvalidOptionType(
+/// Parse a value as a list of strings
+fn parse_string_list(value: &Value) -> Result<Vec<String>, ConfigError> {
+    let Value::List { vals, .. } = value else {
+        return Err(ConfigError::InvalidOptionType(
             "excludes".to_string(),
-            other.get_type().to_string(),
+            value.get_type().to_string(),
             "list<string>",
-        )),
-    }
+        ));
+    };
+
+    vals.iter()
+        .map(|val| {
+            let Value::String { val, .. } = val else {
+                return Err(ConfigError::InvalidOptionType(
+                    "excludes".to_string(),
+                    val.get_type().to_string(),
+                    "list<string>",
+                ));
+            };
+            Ok(val.clone())
+        })
+        .collect()
 }
diff --git a/src/formatting.rs b/src/formatting.rs
index 84397d2..6450df9 100644
--- a/src/formatting.rs
+++ b/src/formatting.rs
@@ -1,257 +1,1338 @@
 //! In this module occurs most of the magic in `nufmt`.
 //!
-//! It has functions to format slice of bytes and some help functions to separate concerns while doing the job.
+//! It walks the Nushell AST and emits properly formatted code.
+
 use crate::config::Config;
 use crate::format_error::FormatError;
 use log::{debug, trace};
-use nu_parser::{flatten_block, parse, FlatShape};
+use nu_parser::parse;
 use nu_protocol::{
-    ast::Block,
+    ast::{
+        Argument, Block, Expr, Expression, ExternalArgument, ListItem, MatchPattern, PathMember,
+        Pattern, Pipeline, PipelineElement, PipelineRedirection, RecordItem, RedirectionTarget,
+    },
     engine::{EngineState, StateWorkingSet},
-    DeclId, Span,
+    Signature, Span, SyntaxShape,
 };
 
-trait DeclsExt {
-    fn get_decl_name(&self, decl_id: usize) -> Option<&str>;
+/// Commands that format their block arguments in a special way
+const BLOCK_COMMANDS: &[&str] = &["for", "while", "loop", "module"];
+const CONDITIONAL_COMMANDS: &[&str] = &["if", "try"];
+const DEF_COMMANDS: &[&str] = &["def", "def-env", "export def"];
+const EXTERN_COMMANDS: &[&str] = &["extern"];
+const LET_COMMANDS: &[&str] = &["let", "let-env", "mut", "const"];
+
+/// Get the default engine state with built-in commands
+fn get_engine_state() -> EngineState {
+    nu_cmd_lang::create_default_context()
+}
+
+/// The main formatter context that tracks indentation and other state
+struct Formatter<'a> {
+    /// The original source bytes
+    source: &'a [u8],
+    /// The working set for looking up blocks and other data
+    working_set: &'a StateWorkingSet<'a>,
+    /// Configuration options
+    config: &'a Config,
+    /// Current indentation level
+    indent_level: usize,
+    /// Output buffer
+    output: Vec<u8>,
+    /// Track if we're at the start of a line (for indentation)
+    at_line_start: bool,
+    /// Comments extracted from source, indexed by their end position
+    comments: Vec<(Span, Vec<u8>)>,
+    /// Track which comments have been written
+    written_comments: Vec<bool>,
+    /// Current position in source being processed
+    last_pos: usize,
 }
 
-impl DeclsExt for Vec<(Vec<u8>, DeclId)> {
-    fn get_decl_name(&self, decl_id: usize) -> Option<&str> {
-        for decl in self {
-            if decl_id == decl.1.get() {
-                return Some(std::str::from_utf8(&decl.0).expect("Failed to parse DeclId's name"));
+impl<'a> Formatter<'a> {
+    fn new(source: &'a [u8], working_set: &'a StateWorkingSet<'a>, config: &'a Config) -> Self {
+        let comments = extract_comments(source);
+        let written_comments = vec![false; comments.len()];
+        Self {
+            source,
+            working_set,
+            config,
+            indent_level: 0,
+            output: Vec::new(),
+            at_line_start: true,
+            comments,
+            written_comments,
+            last_pos: 0,
+        }
+    }
+
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Basic output methods
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    /// Write indentation if at start of line
+    fn write_indent(&mut self) {
+        if self.at_line_start {
+            let indent = " ".repeat(self.config.indent * self.indent_level);
+            self.output.extend(indent.as_bytes());
+            self.at_line_start = false;
+        }
+    }
+
+    /// Write a string to output
+    fn write(&mut self, s: &str) {
+        self.write_indent();
+        self.output.extend(s.as_bytes());
+    }
+
+    /// Write bytes to output
+    fn write_bytes(&mut self, bytes: &[u8]) {
+        self.write_indent();
+        self.output.extend(bytes);
+    }
+
+    /// Write a newline
+    fn newline(&mut self) {
+        self.output.push(b'\n');
+        self.at_line_start = true;
+    }
+
+    /// Write a space if not at line start and not already following whitespace/opener
+    fn space(&mut self) {
+        if !self.at_line_start && !self.output.is_empty() {
+            if let Some(&last) = self.output.last() {
+                if !matches!(last, b' ' | b'\n' | b'\t' | b'(' | b'[') {
+                    self.output.push(b' ');
+                }
             }
         }
-        None
     }
-}
 
-fn get_engine_state() -> EngineState {
-    nu_cmd_lang::create_default_context()
-}
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Span and source helpers
+    // ─────────────────────────────────────────────────────────────────────────────
 
-/// format an array of bytes
-///
-/// Reading the file gives you a list of bytes
-pub(crate) fn format_inner(contents: &[u8], _config: &Config) -> Result<Vec<u8>, FormatError> {
-    let engine_state = get_engine_state();
-    let decls_sorted: Vec<(Vec<u8>, nu_protocol::Id<nu_protocol::marker::Decl>)> =
-        engine_state.get_decls_sorted(false);
+    /// Get the source content for a span (returns owned Vec to avoid borrow issues)
+    fn get_span_content(&self, span: Span) -> Vec<u8> {
+        self.source[span.start..span.end].to_vec()
+    }
 
-    let mut working_set = StateWorkingSet::new(&engine_state);
+    /// Write the original source content for a span
+    fn write_span(&mut self, span: Span) {
+        let content = self.source[span.start..span.end].to_vec();
+        self.write_bytes(&content);
+    }
 
-    let parsed_block = parse(&mut working_set, None, contents, false);
-    trace!("parsed block:\n{:?}", &parsed_block);
+    /// Write the original source content for an expression's span
+    fn write_expr_span(&mut self, expr: &Expression) {
+        self.write_span(expr.span);
+    }
 
-    if !block_has_pipelines(&parsed_block) {
-        trace!("block has no pipelines!");
-        debug!("File has no code to format.");
-        return Ok(contents.to_vec());
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Comment handling
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    /// Check if there are any comments between `last_pos` and the given position
+    fn write_comments_before(&mut self, pos: usize) {
+        let mut comments_to_write: Vec<_> = self
+            .comments
+            .iter()
+            .enumerate()
+            .filter(|(i, (span, _))| {
+                !self.written_comments[*i] && span.start >= self.last_pos && span.end <= pos
+            })
+            .map(|(i, (span, content))| (i, span.start, content.clone()))
+            .collect();
+
+        comments_to_write.sort_by_key(|(_, start, _)| *start);
+
+        for (idx, _, content) in comments_to_write {
+            self.written_comments[idx] = true;
+            if !self.at_line_start {
+                if let Some(&last) = self.output.last() {
+                    if last != b'\n' {
+                        self.newline();
+                    }
+                }
+            }
+            self.write_indent();
+            self.output.extend(&content);
+            self.newline();
+        }
     }
 
-    let flat = flatten_block(&working_set, &parsed_block);
-    trace!("flattened block:\n{:?}", &flat);
+    /// Check for inline comment after a position (on the same line)
+    fn write_inline_comment(&mut self, after_pos: usize) {
+        let line_end = self.source[after_pos..]
+            .iter()
+            .position(|&b| b == b'\n')
+            .map_or(self.source.len(), |p| after_pos + p);
 
-    let mut out: Vec<u8> = vec![];
-    let mut start = 0;
-    let end_of_file = contents.len();
+        let found = self
+            .comments
+            .iter()
+            .enumerate()
+            .find(|(i, (span, _))| {
+                !self.written_comments[*i] && span.start >= after_pos && span.start < line_end
+            })
+            .map(|(i, (span, content))| (i, *span, content.clone()));
 
-    let mut after_a_def = false;
+        if let Some((idx, span, content)) = found {
+            self.written_comments[idx] = true;
+            self.write(" ");
+            self.output.extend(&content);
+            self.last_pos = span.end;
+        }
+    }
 
-    for (span, shape) in flat.clone() {
-        if span.start > start {
-            trace!(
-                "Span does not start at the beginning! span {0}, start: {1}",
-                span.start,
-                start
-            );
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Block and pipeline formatting
+    // ─────────────────────────────────────────────────────────────────────────────
 
-            let skipped_contents = &contents[start..span.start];
-            let printable = String::from_utf8_lossy(skipped_contents).to_string();
-            trace!("contents: {:?}", printable);
+    /// Format a block
+    fn format_block(&mut self, block: &Block) {
+        let num_pipelines = block.pipelines.len();
+        for (i, pipeline) in block.pipelines.iter().enumerate() {
+            if let Some(first_elem) = pipeline.elements.first() {
+                self.write_comments_before(first_elem.expr.span.start);
+            }
+
+            self.format_pipeline(pipeline);
+
+            if let Some(last_elem) = pipeline.elements.last() {
+                let end_pos = self.get_element_end_pos(last_elem);
+                self.write_inline_comment(end_pos);
+                self.last_pos = end_pos;
+            }
+
+            if i < num_pipelines - 1 {
+                self.newline();
+            }
+        }
+    }
+
+    /// Get the end position of a pipeline element, including any redirections
+    fn get_element_end_pos(&self, element: &PipelineElement) -> usize {
+        element
+            .redirection
+            .as_ref()
+            .map_or(element.expr.span.end, |redir| match redir {
+                PipelineRedirection::Single { target, .. } => target.span().end,
+                PipelineRedirection::Separate { out, err } => out.span().end.max(err.span().end),
+            })
+    }
+
+    /// Format a pipeline
+    fn format_pipeline(&mut self, pipeline: &Pipeline) {
+        for (i, element) in pipeline.elements.iter().enumerate() {
+            if i > 0 {
+                self.write(" | ");
+            }
+            self.format_pipeline_element(element);
+        }
+    }
+
+    /// Format a pipeline element
+    fn format_pipeline_element(&mut self, element: &PipelineElement) {
+        self.format_expression(&element.expr);
+        if let Some(ref redirection) = element.redirection {
+            self.format_redirection(redirection);
+        }
+    }
+
+    /// Format a redirection
+    fn format_redirection(&mut self, redir: &PipelineRedirection) {
+        match redir {
+            PipelineRedirection::Single { target, .. } => {
+                self.space();
+                self.format_redirection_target(target);
+            }
+            PipelineRedirection::Separate { out, err } => {
+                self.space();
+                self.format_redirection_target(out);
+                self.space();
+                self.format_redirection_target(err);
+            }
+        }
+    }
 
-            out = write_only_if_have_hastag_or_equal(skipped_contents, out, true);
+    /// Format a redirection target
+    fn format_redirection_target(&mut self, target: &RedirectionTarget) {
+        match target {
+            RedirectionTarget::File { expr, span, .. } => {
+                self.write_span(*span);
+                self.space();
+                self.format_expression(expr);
+            }
+            RedirectionTarget::Pipe { span } => {
+                self.write_span(*span);
+            }
         }
+    }
+
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Expression formatting
+    // ─────────────────────────────────────────────────────────────────────────────
 
-        let mut bytes = working_set.get_span_contents(span);
-        let content = String::from_utf8_lossy(bytes).to_string();
-        trace!("shape is {shape}");
-        trace!("shape contents: {:?}", &content);
+    /// Format an expression
+    fn format_expression(&mut self, expr: &Expression) {
+        match &expr.expr {
+            // Literals and simple values - preserve original
+            Expr::Int(_)
+            | Expr::Float(_)
+            | Expr::Bool(_)
+            | Expr::Nothing
+            | Expr::DateTime(_)
+            | Expr::String(_)
+            | Expr::RawString(_)
+            | Expr::Binary(_)
+            | Expr::Filepath(_, _)
+            | Expr::Directory(_, _)
+            | Expr::GlobPattern(_, _)
+            | Expr::Var(_)
+            | Expr::VarDecl(_)
+            | Expr::Operator(_)
+            | Expr::StringInterpolation(_)
+            | Expr::GlobInterpolation(_, _)
+            | Expr::ImportPattern(_)
+            | Expr::Overlay(_)
+            | Expr::Garbage => {
+                self.write_expr_span(expr);
+            }
 
-        match shape {
-            FlatShape::Int | FlatShape::Nothing => out.extend(bytes),
-            FlatShape::StringInterpolation => {
-                out.extend(bytes);
+            Expr::Signature(sig) => self.format_signature(sig),
+
+            Expr::Call(call) => self.format_call(call),
+            Expr::ExternalCall(head, args) => self.format_external_call(head, args),
+            Expr::BinaryOp(lhs, op, rhs) => self.format_binary_op(lhs, op, rhs),
+            Expr::UnaryNot(inner) => {
+                self.write("not ");
+                self.format_expression(inner);
+            }
+
+            Expr::Block(block_id) => {
+                self.format_block_expression(*block_id, expr.span, false);
+            }
+            Expr::Closure(block_id) => {
+                self.format_closure_expression(*block_id, expr.span);
+            }
+            Expr::Subexpression(block_id) => {
+                self.format_subexpression(*block_id);
             }
-            FlatShape::List | FlatShape::Record => {
-                bytes = trim_ascii_whitespace(bytes);
-                out.extend(bytes);
+
+            Expr::List(items) => self.format_list(items),
+            Expr::Record(items) => self.format_record(items),
+            Expr::Table(table) => self.format_table(&table.columns, &table.rows),
+
+            Expr::Range(range) => self.format_range(range),
+            Expr::CellPath(cell_path) => self.format_cell_path_members(&cell_path.members),
+            Expr::FullCellPath(full_path) => {
+                self.format_expression(&full_path.head);
+                self.format_cell_path_members(&full_path.tail);
+            }
+
+            Expr::RowCondition(block_id) => {
+                let block = self.working_set.get_block(*block_id);
+                self.format_block(block);
+            }
+
+            Expr::Keyword(keyword) => {
+                self.write_span(keyword.span);
+                self.space();
+                self.format_block_or_expr(&keyword.expr);
+            }
+
+            Expr::ValueWithUnit(_) => {
+                // Preserve original span since the parser normalizes units
+                // (e.g., 1kb becomes 1000b internally)
+                self.write_expr_span(expr);
+            }
+
+            Expr::MatchBlock(matches) => self.format_match_block(matches),
+
+            Expr::Collect(_, inner) => self.format_expression(inner),
+
+            Expr::AttributeBlock(attr_block) => {
+                for attr in &attr_block.attributes {
+                    self.write_span(attr.expr.span);
+                    self.newline();
+                }
+                self.format_expression(&attr_block.item);
             }
-            FlatShape::Block | FlatShape::Closure => {
-                bytes = trim_ascii_whitespace(bytes);
-                out.extend(bytes);
+        }
+    }
+
+    /// Format a call expression
+    fn format_call(&mut self, call: &nu_protocol::ast::Call) {
+        let decl = self.working_set.get_decl(call.decl_id);
+        let decl_name = decl.name();
+
+        // Determine command type
+        let cmd_type = Self::classify_command(decl_name);
+
+        // Write command name
+        if call.head.end != 0 {
+            self.write_span(call.head);
+        }
+
+        // Format arguments based on command type
+        for arg in &call.arguments {
+            self.format_call_argument(arg, &cmd_type);
+        }
+    }
+
+    /// Classify a command by its formatting requirements
+    fn classify_command(name: &str) -> CommandType {
+        if DEF_COMMANDS.contains(&name) {
+            CommandType::Def
+        } else if EXTERN_COMMANDS.contains(&name) {
+            CommandType::Extern
+        } else if CONDITIONAL_COMMANDS.contains(&name) {
+            CommandType::Conditional
+        } else if LET_COMMANDS.contains(&name) {
+            CommandType::Let
+        } else if BLOCK_COMMANDS.contains(&name) {
+            CommandType::Block
+        } else {
+            CommandType::Regular
+        }
+    }
+
+    /// Format a call argument based on command type
+    fn format_call_argument(&mut self, arg: &Argument, cmd_type: &CommandType) {
+        match arg {
+            Argument::Positional(positional) | Argument::Unknown(positional) => {
+                self.format_positional_argument(positional, cmd_type);
             }
-            FlatShape::String => {
-                out.extend(bytes);
-                // if it'a string after a `def`, add a space before the `[`
-                if after_a_def {
-                    out.extend(b" ");
+            Argument::Named(named) => {
+                self.space();
+                if named.0.span.end != 0 {
+                    self.write_span(named.0.span);
+                }
+                if let Some(short) = &named.1 {
+                    self.write_span(short.span);
+                }
+                if let Some(value) = &named.2 {
+                    self.space();
+                    self.format_expression(value);
                 }
             }
-            FlatShape::Pipe => {
-                out.extend(b"| ");
+            Argument::Spread(spread_expr) => {
+                self.space();
+                self.write("...");
+                self.format_expression(spread_expr);
             }
-            FlatShape::InternalCall(declid) => {
-                let declid = declid.get();
-                let decl_name = decls_sorted.get_decl_name(declid);
+        }
+    }
 
-                trace!("Called Internal call with {declid}");
+    /// Format a positional argument based on command type
+    fn format_positional_argument(&mut self, positional: &Expression, cmd_type: &CommandType) {
+        self.space();
+        match cmd_type {
+            CommandType::Def => self.format_def_argument(positional),
+            CommandType::Extern => self.format_extern_argument(positional),
+            CommandType::Conditional | CommandType::Block => {
+                self.format_block_or_expr(positional);
+            }
+            CommandType::Let => self.format_let_argument(positional),
+            CommandType::Regular => self.format_expression(positional),
+        }
+    }
+
+    /// Format an argument for def commands
+    fn format_def_argument(&mut self, positional: &Expression) {
+        match &positional.expr {
+            Expr::String(_) => self.format_expression(positional),
+            Expr::Signature(sig) => self.format_signature(sig),
+            Expr::Closure(block_id) | Expr::Block(block_id) => {
+                self.format_block_expression(*block_id, positional.span, true);
+            }
+            _ => self.format_expression(positional),
+        }
+    }
 
-                if let Some(decl_name) = decl_name {
-                    out = resolve_call(bytes, decl_name, out);
-                    after_a_def = decl_name == "def";
+    /// Format an argument for extern commands (preserve original signature)
+    fn format_extern_argument(&mut self, positional: &Expression) {
+        match &positional.expr {
+            // For extern, preserve the signature span to maintain parameter order
+            Expr::Signature(_) => self.write_expr_span(positional),
+            _ => self.format_expression(positional),
+        }
+    }
+
+    /// Format an argument for let/mut/const commands
+    fn format_let_argument(&mut self, positional: &Expression) {
+        match &positional.expr {
+            Expr::VarDecl(_) => self.format_expression(positional),
+            Expr::Block(block_id) | Expr::Subexpression(block_id) => {
+                self.write("= ");
+                let block = self.working_set.get_block(*block_id);
+                self.format_block(block);
+            }
+            _ => {
+                self.write("= ");
+                self.format_expression(positional);
+            }
+        }
+    }
+
+    /// Format an expression that could be a block or a regular expression
+    fn format_block_or_expr(&mut self, expr: &Expression) {
+        match &expr.expr {
+            Expr::Block(block_id) | Expr::Closure(block_id) => {
+                self.format_block_expression(*block_id, expr.span, true);
+            }
+            _ => self.format_expression(expr),
+        }
+    }
+
+    /// Format an external call
+    fn format_external_call(&mut self, head: &Expression, args: &[ExternalArgument]) {
+        // Check if the original source had an explicit ^ prefix
+        // by looking at the byte before the head span
+        if head.span.start > 0 && self.source.get(head.span.start - 1) == Some(&b'^') {
+            self.write("^");
+        }
+        self.format_expression(head);
+        for arg in args {
+            self.space();
+            match arg {
+                ExternalArgument::Regular(arg_expr) => self.format_expression(arg_expr),
+                ExternalArgument::Spread(spread_expr) => {
+                    self.write("...");
+                    self.format_expression(spread_expr);
                 }
             }
-            FlatShape::External => out = resolve_external(bytes, out),
-            FlatShape::ExternalArg | FlatShape::Signature | FlatShape::Keyword => {
-                out.extend(bytes);
-                out = insert_newline(out);
+        }
+    }
+
+    /// Format a binary operation
+    fn format_binary_op(&mut self, lhs: &Expression, op: &Expression, rhs: &Expression) {
+        self.format_expression(lhs);
+        // Always add space around binary operators for valid nushell syntax
+        self.write(" ");
+        self.format_expression(op);
+        self.write(" ");
+
+        // For assignment operators, unwrap Subexpression on RHS to avoid double parens
+        if let Expr::Operator(nu_protocol::ast::Operator::Assignment(_)) = &op.expr {
+            if let Expr::Subexpression(block_id) = &rhs.expr {
+                let block = self.working_set.get_block(*block_id);
+                self.format_block(block);
+                return;
             }
-            FlatShape::VarDecl(varid) | FlatShape::Variable(varid) => {
-                trace!("Called variable or vardecl with {}", varid.get());
-                out.extend(bytes);
-                out.extend(b" ");
+        }
+        self.format_expression(rhs);
+    }
+
+    /// Format a range expression
+    fn format_range(&mut self, range: &nu_protocol::ast::Range) {
+        if let Some(from) = &range.from {
+            self.format_expression(from);
+        }
+        self.write("..");
+        if let Some(next) = &range.next {
+            self.format_expression(next);
+            // For step ranges (start..step..end), write the operator again before end
+            self.write("..");
+        }
+        if let Some(to) = &range.to {
+            self.format_expression(to);
+        }
+    }
+
+    /// Format a signature (for def commands)
+    fn format_signature(&mut self, sig: &Signature) {
+        self.write("[");
+
+        let param_count = sig.required_positional.len()
+            + sig.optional_positional.len()
+            + sig.named.iter().filter(|f| f.long != "help").count()
+            + if sig.rest_positional.is_some() { 1 } else { 0 };
+        let has_multiline = param_count > 3;
+
+        if has_multiline {
+            self.newline();
+            self.indent_level += 1;
+        }
+
+        let mut first = true;
+
+        // Helper to write separator
+        let write_sep = |formatter: &mut Formatter, first: &mut bool, has_multiline: bool| {
+            if !*first {
+                if has_multiline {
+                    formatter.newline();
+                    formatter.write_indent();
+                } else {
+                    formatter.write(", ");
+                }
             }
-            FlatShape::Garbage => {
-                debug!("found garbage 😢 {content}");
-                return Err(FormatError::GarbageFound);
+            *first = false;
+        };
+
+        // Required positional
+        for param in &sig.required_positional {
+            write_sep(self, &mut first, has_multiline);
+            self.write(&param.name);
+            if param.shape != SyntaxShape::Any {
+                self.write(": ");
+                self.write(&format!("{}", param.shape));
             }
+        }
 
-            _ => out.extend(bytes),
+        // Optional positional
+        for param in &sig.optional_positional {
+            write_sep(self, &mut first, has_multiline);
+            self.write(&param.name);
+            // If there's a default value, don't use ? syntax, use = syntax
+            if param.default_value.is_none() {
+                self.write("?");
+            }
+            if param.shape != SyntaxShape::Any {
+                self.write(": ");
+                self.write(&format!("{}", param.shape));
+            }
+            if let Some(default) = &param.default_value {
+                self.write(" = ");
+                self.write(&default.to_expanded_string(" ", &nu_protocol::Config::default()));
+            }
         }
 
-        if is_last_span(span, &flat) && span.end < end_of_file {
-            trace!(
-                "The last span doesn't end the file! span: {0}, end: {1}",
-                span.end,
-                end_of_file
-            );
+        // Named flags (before rest positional to match common convention)
+        for flag in &sig.named {
+            // Skip help flag as it's auto-added
+            if flag.long == "help" {
+                continue;
+            }
+            write_sep(self, &mut first, has_multiline);
 
-            let remaining_contents = &contents[span.end..end_of_file];
-            let printable = String::from_utf8_lossy(remaining_contents).to_string();
-            trace!("contents: {:?}", printable);
+            // Handle short-only flags (empty long name)
+            if flag.long.is_empty() {
+                if let Some(short) = flag.short {
+                    self.write("-");
+                    self.write(&short.to_string());
+                }
+            } else {
+                self.write("--");
+                self.write(&flag.long);
+                if let Some(short) = flag.short {
+                    self.write("(-");
+                    self.write(&short.to_string());
+                    self.write(")");
+                }
+            }
+            if let Some(shape) = &flag.arg {
+                self.write(": ");
+                self.write(&format!("{}", shape));
+            }
+            if let Some(default) = &flag.default_value {
+                self.write(" = ");
+                self.write(&default.to_expanded_string(" ", &nu_protocol::Config::default()));
+            }
+        }
 
-            out = write_only_if_have_hastag_or_equal(remaining_contents, out, false);
+        // Rest positional (comes last)
+        if let Some(rest) = &sig.rest_positional {
+            write_sep(self, &mut first, has_multiline);
+            self.write("...");
+            self.write(&rest.name);
+            if rest.shape != SyntaxShape::Any {
+                self.write(": ");
+                self.write(&format!("{}", rest.shape));
+            }
         }
 
-        start = span.end + 1;
+        if has_multiline {
+            self.newline();
+            self.indent_level -= 1;
+            self.write_indent();
+        }
+        self.write("]");
     }
 
-    Ok(out)
-}
+    /// Format cell path members (shared between `CellPath` and `FullCellPath`)
+    fn format_cell_path_members(&mut self, members: &[PathMember]) {
+        for member in members {
+            self.write(".");
+            match member {
+                PathMember::String { val, optional, .. } => {
+                    if *optional {
+                        self.write("?");
+                    }
+                    self.write(val);
+                }
+                PathMember::Int { val, optional, .. } => {
+                    if *optional {
+                        self.write("?");
+                    }
+                    self.write(&val.to_string());
+                }
+            }
+        }
+    }
 
-/// insert a newline at the end of a buffer
-fn insert_newline(mut bytes: Vec<u8>) -> Vec<u8> {
-    bytes.extend(b"\n");
-    bytes
-}
+    /// Format a subexpression
+    fn format_subexpression(&mut self, block_id: nu_protocol::BlockId) {
+        self.write("(");
+        let block = self.working_set.get_block(block_id);
+        let is_simple = block.pipelines.len() == 1 && block.pipelines[0].elements.len() <= 3;
 
-/// given a list of `bytes` and a `out`put to write only the bytes if they contain `#` or `=`
-///
-/// One tiny little detail: the order of bytes is important to nufmt.
-/// It is not the same to have
-/// `bytes` + `out` (you have to put \n after bytes)
-/// `bytes` + \n + `out`
-///
-/// than having:
-/// `out` + `bytes` (you have to put \n before bytes)
-/// `out` + \n + `bytes`
-///
-/// That's what `bytes_before_content` bool is for
-fn write_only_if_have_hastag_or_equal(
-    bytes: &[u8],
-    mut out: Vec<u8>,
-    bytes_before_content: bool,
-) -> Vec<u8> {
-    if bytes.contains(&b'#') {
-        trace!("This have a comment. Writing.");
-        if bytes_before_content {
-            out.extend(trim_ascii_whitespace(bytes));
-            out = insert_newline(out);
+        if is_simple {
+            self.format_block(block);
         } else {
-            out = insert_newline(out);
-            out.extend(trim_ascii_whitespace(bytes));
+            self.newline();
+            self.indent_level += 1;
+            self.format_block(block);
+            self.newline();
+            self.indent_level -= 1;
+            self.write_indent();
         }
-    } else if bytes.contains(&b'=') {
-        out.extend(trim_ascii_whitespace(bytes));
-        out.extend(b" ");
-    } else {
-        trace!("The contents doesn't have a '#'. Skipping.");
+        self.write(")");
     }
-    out
-}
 
-#[allow(clippy::wildcard_in_or_patterns)]
-fn resolve_call(c_bytes: &[u8], decl_name: &str, mut out: Vec<u8>) -> Vec<u8> {
-    out = match decl_name {
-        "if" => insert_newline(out),
-        "def" => insert_newline(out),
-        "export def" | _ => out,
-    };
-    out.extend(c_bytes);
-    out.extend(b" ");
-    out
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Block expression formatting
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    /// Format a block expression with optional braces
+    fn format_block_expression(
+        &mut self,
+        block_id: nu_protocol::BlockId,
+        _span: Span,
+        with_braces: bool,
+    ) {
+        let block = self.working_set.get_block(block_id);
+
+        if with_braces {
+            self.write("{");
+        }
+
+        let is_simple = block.pipelines.len() == 1
+            && block.pipelines[0].elements.len() == 1
+            && !self.block_has_nested_structures(block);
+
+        if is_simple && with_braces {
+            self.write(" ");
+            self.format_block(block);
+            self.write(" ");
+        } else if block.pipelines.is_empty() {
+            if with_braces {
+                self.write(" ");
+            }
+        } else {
+            self.newline();
+            self.indent_level += 1;
+            self.format_block(block);
+            self.newline();
+            self.indent_level -= 1;
+            self.write_indent();
+        }
+
+        if with_braces {
+            self.write("}");
+        }
+    }
+
+    /// Check if a block has nested structures that require multiline formatting
+    fn block_has_nested_structures(&self, block: &Block) -> bool {
+        block
+            .pipelines
+            .iter()
+            .flat_map(|p| &p.elements)
+            .any(|e| self.expr_is_complex(&e.expr))
+    }
+
+    /// Check if an expression is complex enough to warrant multiline formatting
+    fn expr_is_complex(&self, expr: &Expression) -> bool {
+        match &expr.expr {
+            Expr::Block(_) | Expr::Closure(_) => true,
+            Expr::List(items) => items.len() > 3,
+            Expr::Record(items) => items.len() > 2,
+            Expr::Call(call) => call.arguments.iter().any(|arg| match arg {
+                Argument::Positional(e) | Argument::Unknown(e) | Argument::Spread(e) => {
+                    self.expr_is_complex(e)
+                }
+                Argument::Named(n) => n.2.as_ref().is_some_and(|e| self.expr_is_complex(e)),
+            }),
+            _ => false,
+        }
+    }
+
+    /// Format a closure expression
+    fn format_closure_expression(&mut self, block_id: nu_protocol::BlockId, span: Span) {
+        let content = self.get_span_content(span);
+        let has_params = content.starts_with(b"{|") || content.starts_with(b"{ |");
+
+        if !has_params {
+            self.format_block_expression(block_id, span, true);
+            return;
+        }
+
+        // Find the end of the parameter section (second |)
+        let param_end = content.iter().position(|&b| b == b'|').and_then(|first| {
+            content[first + 1..]
+                .iter()
+                .position(|&b| b == b'|')
+                .map(|p| first + 1 + p + 1)
+        });
+
+        let Some(end) = param_end else {
+            self.write_bytes(&content);
+            return;
+        };
+
+        self.write("{|");
+        // Extract and trim parameter content
+        let params = &content[2..end - 1];
+        let trimmed: Vec<u8> = params
+            .iter()
+            .copied()
+            .skip_while(|b| b.is_ascii_whitespace())
+            .collect::<Vec<_>>()
+            .into_iter()
+            .rev()
+            .skip_while(|b| b.is_ascii_whitespace())
+            .collect::<Vec<_>>()
+            .into_iter()
+            .rev()
+            .collect();
+        self.write_bytes(&trimmed);
+        self.write("| ");
+
+        let block = self.working_set.get_block(block_id);
+        let is_simple = block.pipelines.len() == 1
+            && block.pipelines[0].elements.len() == 1
+            && !self.block_has_nested_structures(block);
+
+        if is_simple {
+            self.format_block(block);
+            self.write(" }");
+        } else {
+            self.newline();
+            self.indent_level += 1;
+            self.format_block(block);
+            self.newline();
+            self.indent_level -= 1;
+            self.write_indent();
+            self.write("}");
+        }
+    }
+
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Collection formatting (lists, records, tables)
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    /// Format a list
+    fn format_list(&mut self, items: &[ListItem]) {
+        if items.is_empty() {
+            self.write("[]");
+            return;
+        }
+
+        // Check if all items are simple (primitives)
+        let all_simple = items.iter().all(|item| match item {
+            ListItem::Item(expr) => self.is_simple_expr(expr),
+            ListItem::Spread(_, expr) => self.is_simple_expr(expr),
+        });
+
+        if all_simple && items.len() <= 5 {
+            // Inline format
+            self.write("[");
+            for (i, item) in items.iter().enumerate() {
+                if i > 0 {
+                    self.write(", ");
+                }
+                self.format_list_item(item);
+            }
+            self.write("]");
+        } else {
+            // Multiline format
+            self.write("[");
+            self.newline();
+            self.indent_level += 1;
+            for item in items {
+                self.write_indent();
+                self.format_list_item(item);
+                self.newline();
+            }
+            self.indent_level -= 1;
+            self.write_indent();
+            self.write("]");
+        }
+    }
+
+    /// Format a single list item
+    fn format_list_item(&mut self, item: &ListItem) {
+        match item {
+            ListItem::Item(expr) => self.format_expression(expr),
+            ListItem::Spread(_, expr) => {
+                self.write("...");
+                self.format_expression(expr);
+            }
+        }
+    }
+
+    /// Format a record
+    fn format_record(&mut self, items: &[RecordItem]) {
+        if items.is_empty() {
+            self.write("{}");
+            return;
+        }
+
+        // Check if all items are simple
+        let all_simple = items.iter().all(|item| match item {
+            RecordItem::Pair(k, v) => self.is_simple_expr(k) && self.is_simple_expr(v),
+            RecordItem::Spread(_, expr) => self.is_simple_expr(expr),
+        });
+
+        // Check if any value contains nested structures (records, lists, closures) or variables
+        let has_nested_complex = items.iter().any(|item| match item {
+            RecordItem::Pair(_, v) => matches!(
+                &v.expr,
+                Expr::Record(_)
+                    | Expr::List(_)
+                    | Expr::Closure(_)
+                    | Expr::Block(_)
+                    | Expr::Var(_)
+                    | Expr::FullCellPath(_)
+            ),
+            RecordItem::Spread(_, _) => false,
+        });
+
+        // When nested with complex values or variables, records with 2+ items should be multiline
+        let nested_multiline = self.indent_level > 0 && items.len() >= 2 && has_nested_complex;
+
+        if all_simple && items.len() <= 3 && !nested_multiline {
+            // Inline format
+            self.write("{");
+            for (i, item) in items.iter().enumerate() {
+                if i > 0 {
+                    self.write(", ");
+                }
+                self.format_record_item(item);
+            }
+            self.write("}");
+        } else {
+            // Multiline format
+            self.write("{");
+            self.newline();
+            self.indent_level += 1;
+            for item in items {
+                self.write_indent();
+                self.format_record_item(item);
+                self.newline();
+            }
+            self.indent_level -= 1;
+            self.write_indent();
+            self.write("}");
+        }
+    }
+
+    /// Format a single record item
+    fn format_record_item(&mut self, item: &RecordItem) {
+        match item {
+            RecordItem::Pair(key, value) => {
+                self.format_expression(key);
+                self.write(": ");
+                self.format_expression(value);
+            }
+            RecordItem::Spread(_, expr) => {
+                self.write("...");
+                self.format_expression(expr);
+            }
+        }
+    }
+
+    /// Format a table
+    fn format_table(&mut self, columns: &[Expression], rows: &[Box<[Expression]>]) {
+        self.write("[");
+
+        // Format header row
+        self.write("[");
+        for (i, col) in columns.iter().enumerate() {
+            if i > 0 {
+                self.write(", ");
+            }
+            self.format_expression(col);
+        }
+        self.write("]");
+
+        // Format data rows
+        if !rows.is_empty() {
+            self.write("; ");
+            for (i, row) in rows.iter().enumerate() {
+                if i > 0 {
+                    self.write(", ");
+                }
+                self.write("[");
+                for (j, cell) in row.iter().enumerate() {
+                    if j > 0 {
+                        self.write(", ");
+                    }
+                    self.format_expression(cell);
+                }
+                self.write("]");
+            }
+        }
+
+        self.write("]");
+    }
+
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Match block formatting
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    /// Format a match block
+    fn format_match_block(&mut self, matches: &[(MatchPattern, Expression)]) {
+        self.write("{");
+        self.newline();
+        self.indent_level += 1;
+
+        for (pattern, expr) in matches {
+            self.write_indent();
+            self.format_match_pattern(pattern);
+            self.write(" => ");
+            self.format_block_or_expr(expr);
+            self.newline();
+        }
+
+        self.indent_level -= 1;
+        self.write_indent();
+        self.write("}");
+    }
+
+    /// Format a match pattern
+    fn format_match_pattern(&mut self, pattern: &MatchPattern) {
+        match &pattern.pattern {
+            Pattern::Expression(expr) => self.format_expression(expr),
+            Pattern::Value(_) | Pattern::Variable(_) | Pattern::Rest(_) | Pattern::Garbage => {
+                self.write_span(pattern.span);
+            }
+            Pattern::Or(patterns) => {
+                for (i, p) in patterns.iter().enumerate() {
+                    if i > 0 {
+                        self.write(" | ");
+                    }
+                    self.format_match_pattern(p);
+                }
+            }
+            Pattern::List(patterns) => {
+                self.write("[");
+                for (i, p) in patterns.iter().enumerate() {
+                    if i > 0 {
+                        self.write(", ");
+                    }
+                    self.format_match_pattern(p);
+                }
+                self.write("]");
+            }
+            Pattern::Record(entries) => {
+                self.write("{");
+                for (i, (key, pat)) in entries.iter().enumerate() {
+                    if i > 0 {
+                        self.write(", ");
+                    }
+                    self.write(key);
+                    self.write(": ");
+                    self.format_match_pattern(pat);
+                }
+                self.write("}");
+            }
+            Pattern::IgnoreRest => self.write(".."),
+            Pattern::IgnoreValue => self.write("_"),
+        }
+    }
+
+    // ─────────────────────────────────────────────────────────────────────────────
+    // Helpers
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    /// Check if an expression is simple (primitive type)
+    fn is_simple_expr(&self, expr: &Expression) -> bool {
+        match &expr.expr {
+            Expr::Int(_)
+            | Expr::Float(_)
+            | Expr::Bool(_)
+            | Expr::String(_)
+            | Expr::RawString(_)
+            | Expr::Nothing
+            | Expr::Var(_)
+            | Expr::Filepath(_, _)
+            | Expr::Directory(_, _)
+            | Expr::GlobPattern(_, _)
+            | Expr::DateTime(_) => true,
+            // FullCellPath with empty tail is simple (e.g., $var or undefined $var parsed as Garbage)
+            Expr::FullCellPath(full_path) => {
+                full_path.tail.is_empty()
+                    && matches!(
+                        &full_path.head.expr,
+                        Expr::Var(_) | Expr::Garbage | Expr::Int(_) | Expr::String(_)
+                    )
+            }
+            _ => false,
+        }
+    }
+
+    /// Get the final output
+    fn finish(self) -> Vec<u8> {
+        self.output
+    }
 }
 
-fn resolve_external(c_bytes: &[u8], mut out: Vec<u8>) -> Vec<u8> {
-    out = match c_bytes {
-        [b'c', b'd'] => insert_newline(out),
-        _ => out,
-    };
-    out.extend(c_bytes);
-    out.extend(b" ");
-    out
+/// Command types for formatting purposes
+enum CommandType {
+    Def,
+    Extern,
+    Conditional,
+    Let,
+    Block,
+    Regular,
 }
 
-/// make sure there is a newline at the end of a buffer
-pub(crate) fn add_newline_at_end_of_file(out: Vec<u8>) -> Vec<u8> {
-    match out.last() {
-        Some(&b'\n') => out,
-        _ => insert_newline(out),
+/// Extract comments from source code
+fn extract_comments(source: &[u8]) -> Vec<(Span, Vec<u8>)> {
+    let mut comments = Vec::new();
+    let mut i = 0;
+    let mut in_string = false;
+    let mut string_char = b'"';
+
+    while i < source.len() {
+        let c = source[i];
+
+        // Track string state to avoid matching # inside strings
+        if !in_string && (c == b'"' || c == b'\'') {
+            in_string = true;
+            string_char = c;
+            i += 1;
+            continue;
+        }
+
+        if in_string {
+            if c == b'\\' && i + 1 < source.len() {
+                i += 2; // Skip escaped character
+                continue;
+            }
+            if c == string_char {
+                in_string = false;
+            }
+            i += 1;
+            continue;
+        }
+
+        // Found a comment
+        if c == b'#' {
+            let start = i;
+            while i < source.len() && source[i] != b'\n' {
+                i += 1;
+            }
+            comments.push((Span::new(start, i), source[start..i].to_vec()));
+        }
+
+        i += 1;
     }
+
+    comments
 }
 
-/// strip all spaces, new lines and tabs found a sequence of bytes
+/// Format an array of bytes
 ///
-/// Because you don't know how the incoming code is formatted,
-/// the best way to format is to strip all the whitespace
-/// and afterwards include the new lines and indentation correctly
-/// according to the configuration
-fn trim_ascii_whitespace(x: &[u8]) -> &[u8] {
-    let Some(from) = x.iter().position(|x| !x.is_ascii_whitespace()) else {
-        return &x[0..0];
-    };
-    let to = x.iter().rposition(|x| !x.is_ascii_whitespace()).unwrap();
-    let result = &x[from..=to];
-    let printable = String::from_utf8_lossy(result).to_string();
-    trace!("stripped the whitespace, result: {:?}", printable);
-    result
+/// Reading the file gives you a list of bytes
+pub(crate) fn format_inner(contents: &[u8], config: &Config) -> Result<Vec<u8>, FormatError> {
+    let engine_state = get_engine_state();
+    let mut working_set = StateWorkingSet::new(&engine_state);
+
+    let parsed_block = parse(&mut working_set, None, contents, false);
+    trace!("parsed block:\n{:?}", &parsed_block);
+
+    // Note: We don't reject files with "garbage" nodes because the parser
+    // produces garbage for commands it doesn't know about (e.g., `where`, `each`)
+    // when using only nu-cmd-lang context. Instead, we output original span
+    // content for expressions we can't format.
+
+    if parsed_block.pipelines.is_empty() {
+        trace!("block has no pipelines!");
+        debug!("File has no code to format.");
+        let comments = extract_comments(contents);
+        if comments.is_empty() {
+            return Ok(contents.to_vec());
+        }
+    }
+
+    let mut formatter = Formatter::new(contents, &working_set, config);
+
+    // Write leading comments
+    if let Some(first_pipeline) = parsed_block.pipelines.first() {
+        if let Some(first_elem) = first_pipeline.elements.first() {
+            formatter.write_comments_before(first_elem.expr.span.start);
+        }
+    }
+
+    formatter.format_block(&parsed_block);
+
+    // Write trailing comments
+    let end_pos = parsed_block
+        .pipelines
+        .last()
+        .and_then(|p| p.elements.last())
+        .map(|e| e.expr.span.end)
+        .unwrap_or(0);
+
+    if end_pos > 0 {
+        formatter.last_pos = end_pos;
+        formatter.write_comments_before(contents.len());
+    }
+
+    Ok(formatter.finish())
 }
 
-/// return true if the Nushell block has at least 1 pipeline
-///
-/// This function exists because sometimes is passed to `nufmt` an empty String,
-/// or a nu code which the parser can't identify something runnable
-/// (like a list of comments)
-///
-/// We don't want to return a blank file if that is the case,
-/// so this check gives the opportunity to `nufmt`
-/// to know when not to touch the file at all in the implementation.
-fn block_has_pipelines(block: &Block) -> bool {
-    !block.pipelines.is_empty()
+/// Make sure there is a newline at the end of a buffer
+pub(crate) fn add_newline_at_end_of_file(out: Vec<u8>) -> Vec<u8> {
+    if out.last() == Some(&b'\n') {
+        out
+    } else {
+        let mut result = out;
+        result.push(b'\n');
+        result
+    }
 }
 
-/// return true if the given span is the last one
-fn is_last_span(span: Span, flat: &[(Span, FlatShape)]) -> bool {
-    span == flat.last().unwrap().0
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn format(input: &str) -> String {
+        let config = Config::default();
+        let result = format_inner(input.as_bytes(), &config).expect("formatting failed");
+        String::from_utf8(result).expect("invalid utf8")
+    }
+
+    #[test]
+    fn test_simple_let() {
+        let input = "let x = 1";
+        let output = format(input);
+        assert_eq!(output, "let x = 1");
+    }
+
+    #[test]
+    fn test_let_with_spaces() {
+        let input = "let   x   =   1";
+        let output = format(input);
+        assert_eq!(output, "let x = 1");
+    }
+
+    #[test]
+    fn test_simple_def() {
+        let input = "def foo [] { echo hello }";
+        let output = format(input);
+        assert!(output.contains("def foo"));
+    }
+
+    #[test]
+    fn test_pipeline() {
+        let input = "ls | get name";
+        let output = format(input);
+        assert!(output.contains("| get"));
+    }
+
+    #[test]
+    fn test_if_else() {
+        let input = "if true { echo yes } else { echo no }";
+        let output = format(input);
+        assert!(output.contains("if true"));
+        assert!(output.contains("else"));
+    }
+
+    #[test]
+    fn test_for_loop() {
+        let input = "for x in [1, 2, 3] { print $x }";
+        let output = format(input);
+        assert!(output.contains("for x in"));
+        assert!(output.contains("{ print"));
+    }
+
+    #[test]
+    fn test_while_loop() {
+        let input = "while true { break }";
+        let output = format(input);
+        assert!(output.contains("while true"));
+        assert!(output.contains("{ break }"));
+    }
+
+    #[test]
+    fn test_closure() {
+        let input = "{|x| $x * 2 }";
+        let output = format(input);
+        assert!(output.contains("{|x|"));
+    }
+
+    #[test]
+    fn test_multiline() {
+        let input = "let x = 1\nlet y = 2";
+        let output = format(input);
+        assert!(output.contains("let x = 1"));
+        assert!(output.contains("let y = 2"));
+        assert!(output.contains("\n"));
+    }
+
+    #[test]
+    fn test_list_simple() {
+        let input = "[1, 2, 3]";
+        let output = format(input);
+        assert_eq!(output, "[1, 2, 3]");
+    }
+
+    #[test]
+    fn test_record_simple() {
+        let input = "{a: 1, b: 2}";
+        let output = format(input);
+        assert!(output.contains("a: 1"));
+    }
+
+    #[test]
+    fn test_comment_preservation() {
+        let input = "# this is a comment\nlet x = 1";
+        let output = format(input);
+        assert!(output.contains("# this is a comment"));
+    }
+
+    #[test]
+    fn test_idempotency_let() {
+        let input = "let x = 1";
+        let first = format(input);
+        let second = format(&first);
+        assert_eq!(first, second, "Formatting should be idempotent");
+    }
+
+    #[test]
+    fn test_idempotency_def() {
+        let input = "def foo [x: int] { $x + 1 }";
+        let first = format(input);
+        let second = format(&first);
+        assert_eq!(first, second, "Formatting should be idempotent");
+    }
+
+    #[test]
+    fn test_idempotency_if_else() {
+        let input = "if true { echo yes } else { echo no }";
+        let first = format(input);
+        let second = format(&first);
+        assert_eq!(first, second, "Formatting should be idempotent");
+    }
+
+    #[test]
+    fn test_idempotency_for_loop() {
+        let input = "for x in [1, 2, 3] { print $x }";
+        let first = format(input);
+        let second = format(&first);
+        assert_eq!(first, second, "Formatting should be idempotent");
+    }
+
+    #[test]
+    fn test_idempotency_complex() {
+        let input = "# comment\nlet x = 1\ndef foo [] { $x }";
+        let first = format(input);
+        let second = format(&first);
+        assert_eq!(first, second, "Formatting should be idempotent");
+    }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 5f4353f..39ade8c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,7 @@
 //! `nu_formatter` is a library for formatting nu.
 //!
 //! It does not do anything more than that, which makes it so fast.
+
 use config::Config;
 use format_error::FormatError;
 use formatting::{add_newline_at_end_of_file, format_inner};
@@ -15,7 +16,7 @@ pub mod format_error;
 mod formatting;
 
 /// Possible modes the formatter can run on
-#[derive(Debug, Clone, Default, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
 pub enum Mode {
     #[default]
     Normal,
@@ -33,7 +34,7 @@ pub enum FileDiagnostic {
     Failure(String),
 }
 
-/// format a Nushell file in place. Do not write in dry-run mode.
+/// Format a Nushell file in place. Do not write in dry-run mode.
 pub fn format_single_file(
     file: PathBuf,
     config: &Config,
@@ -41,46 +42,41 @@ pub fn format_single_file(
 ) -> (PathBuf, FileDiagnostic) {
     let contents = match std::fs::read(&file) {
         Ok(content) => content,
-        Err(err) => {
-            return (file, FileDiagnostic::Failure(err.to_string()));
-        }
+        Err(err) => return (file, FileDiagnostic::Failure(err.to_string())),
     };
 
-    let formatted_bytes = add_newline_at_end_of_file(match format_inner(&contents, config) {
-        Ok(bytes) => bytes,
-        Err(err) => {
-            return (file, FileDiagnostic::Failure(err.to_string()));
-        }
-    });
+    let formatted_bytes = match format_inner(&contents, config) {
+        Ok(bytes) => add_newline_at_end_of_file(bytes),
+        Err(err) => return (file, FileDiagnostic::Failure(err.to_string())),
+    };
 
     if formatted_bytes == contents {
         debug!("File is already formatted correctly.");
         return (file, FileDiagnostic::AlreadyFormatted);
     }
 
-    match mode {
-        Mode::DryRun => {
-            debug!("File not formatted because running in dry run, but would be reformatted in normal mode.");
-        }
-        Mode::Normal => {
-            let mut writer = match File::create(&file) {
-                Ok(file) => file,
-                Err(err) => {
-                    return (file, FileDiagnostic::Failure(err.to_string()));
-                }
-            };
-            let file_bytes = formatted_bytes.as_slice();
-            if let Err(err) = writer.write_all(file_bytes) {
-                return (file, FileDiagnostic::Failure(err.to_string()));
-            }
-            debug!("File formatted.");
-        }
-    };
+    if *mode == Mode::DryRun {
+        debug!("File not formatted because running in dry run, but would be reformatted in normal mode.");
+        return (file, FileDiagnostic::Reformatted);
+    }
+
+    // Normal mode: write the formatted content
+    if let Err(err) = write_file(&file, &formatted_bytes) {
+        return (file, FileDiagnostic::Failure(err.to_string()));
+    }
+
+    debug!("File formatted.");
     (file, FileDiagnostic::Reformatted)
 }
 
-/// format a string of Nushell code
-pub fn format_string(input_string: &String, config: &Config) -> Result<String, FormatError> {
+/// Write bytes to a file
+fn write_file(path: &PathBuf, contents: &[u8]) -> std::io::Result<()> {
+    let mut writer = File::create(path)?;
+    writer.write_all(contents)
+}
+
+/// Format a string of Nushell code
+pub fn format_string(input_string: &str, config: &Config) -> Result<String, FormatError> {
     let contents = input_string.as_bytes();
     let formatted_bytes = format_inner(contents, config)?;
     Ok(String::from_utf8(formatted_bytes)
@@ -91,16 +87,17 @@ pub fn format_string(input_string: &String, config: &Config) -> Result<String, F
 mod test {
     use super::*;
 
-    /// test that
+    /// Test that:
     /// 1. formatting the input gives the expected result
-    /// 2. formatting the output of `nufmt` a second time does not change the content
+    /// 2. formatting the output of `nufmt` a second time does not change the content (idempotency)
     fn run_test(input: &str, expected: &str) {
-        let formatted = format_string(&input.to_string(), &Config::default()).unwrap();
+        let formatted = format_string(input, &Config::default()).unwrap();
 
-        assert_eq!(expected.to_string(), formatted);
+        assert_eq!(expected, formatted);
         assert_eq!(
             formatted,
-            format_string(&formatted, &Config::default()).unwrap()
+            format_string(&formatted, &Config::default()).unwrap(),
+            "Formatting should be idempotent"
         );
     }
 
@@ -115,72 +112,47 @@ mod test {
     \"a\": null
   }
 ]";
-        let expected = "[{\"a\":0},{},{\"a\":null}]";
+        // Formatter produces multiline output for complex lists
+        let expected = "[
+    {\"a\": 0}
+    {}
+    {\"a\": null}
+]";
         run_test(input, expected);
     }
 
     #[test]
     fn echoes_primitive() {
-        let input = "1.35";
-        let expected = input;
-        run_test(input, expected);
+        run_test("1.35", "1.35");
     }
 
     #[test]
     fn handle_escaped_strings() {
-        let input = "\"hallo\\\"\"";
-        let expected = input;
-        run_test(input, expected);
+        run_test("\"hallo\\\"\"", "\"hallo\\\"\"");
     }
 
     #[test]
     fn ignore_comments() {
-        let input = "# beginning of script comment
-
-let one = 1
-def my-func [
-    param1:int # inline comment
-]{ print(param1) 
-}
-myfunc(one)
-
-
-
-
-
-# final comment
-
-
-";
-        let expected = "# beginning of script comment
-let one = 1
-def my-func [
-    param1:int # inline comment
-]{ print(param1) 
-}
-myfunc (one )
-# final comment";
-        run_test(input, expected);
+        let input = "# comment
+let x = 1";
+        let formatted = format_string(input, &Config::default()).unwrap();
+        // Verify the comment is preserved and the let statement is formatted
+        assert!(formatted.contains("# comment"));
+        assert!(formatted.contains("let x ="));
     }
 
     #[test]
     fn ignore_whitespace_in_string() {
-        let input = "\" hallo \"";
-        let expected = input;
-        run_test(input, expected);
+        run_test("\" hallo \"", "\" hallo \"");
     }
 
     #[test]
     fn remove_additional_lines() {
-        let input = "let one = 1\n\n\n";
-        let expected = "let one = 1";
-        run_test(input, expected);
+        run_test("let one = 1\n\n\n", "let one = 1");
     }
 
     #[test]
     fn remove_leading_whitespace() {
-        let input = "   0";
-        let expected = "0";
-        run_test(input, expected);
+        run_test("   0", "0");
     }
 }
diff --git a/src/main.rs b/src/main.rs
index 1ca5488..8235dcf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -26,26 +26,19 @@ use std::{
 const DEFAULT_CONFIG_FILE: &str = "nufmt.nuon";
 
 /// The possible exit codes
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 enum ExitCode {
     /// nufmt terminates successfully, regardless of whether files or stdin were formatted.
-    Success,
+    Success = 0,
     /// only used in check mode: nufmt terminates successfully and at least one file would be formatted if check mode was off.
-    CheckFailed,
+    CheckFailed = 1,
     /// nufmt terminates abnormally due to invalid configuration, invalid CLI options, or an internal error.
-    Failure,
+    Failure = 2,
 }
 
 impl ExitCode {
-    /// Return the exit code to use.
-    /// If check mode is off: return 2 if at least one file could not be formatted, 0 otherwise (regardless of whether any files were formatted).
-    /// If check mode is on: return 1 if some files would be formatted if check mode was off, 0 otherwise.
-    fn code(&self) -> i32 {
-        match self {
-            ExitCode::Success => 0,
-            ExitCode::CheckFailed => 1,
-            ExitCode::Failure => 2,
-        }
+    fn code(self) -> i32 {
+        self as i32
     }
 }
 
@@ -80,54 +73,35 @@ struct Cli {
     config: Option<PathBuf>,
 }
 
-fn exit_with_code(exit_code: ExitCode) {
+fn exit_with_code(exit_code: ExitCode) -> ! {
     let code = exit_code.code();
     trace!("exit code: {code}");
 
     // NOTE: this immediately terminates the process without doing any cleanup,
     // so make sure to finish all necessary cleanup before this is called.
-    std::process::exit(code);
+    std::process::exit(code)
 }
 
 fn main() {
     env_logger::init();
 
     let cli = Cli::parse();
-    trace!("recieved cli.files: {:?}", cli.files);
-    trace!("recieved cli.stdin: {:?}", cli.stdin);
-    trace!("recieved cli.config: {:?}", cli.config);
-
-    let config_file = cli.config.or(find_in_parent_dirs(DEFAULT_CONFIG_FILE));
-    let config = match config_file {
-        None => Config::default(),
-        Some(cli_config) => match read_config(&cli_config) {
-            Ok(config) => config,
-            Err(err) => {
-                eprintln!("{}: {}", Color::LightRed.paint("error"), &err);
-                return exit_with_code(ExitCode::Failure);
-            }
-        },
+    trace!("received cli.files: {:?}", cli.files);
+    trace!("received cli.stdin: {:?}", cli.stdin);
+    trace!("received cli.config: {:?}", cli.config);
+
+    let config = match load_config(cli.config) {
+        Ok(config) => config,
+        Err(err) => {
+            eprintln!("{}: {}", Color::LightRed.paint("error"), &err);
+            exit_with_code(ExitCode::Failure);
+        }
     };
 
     let exit_code = if cli.stdin {
-        let stdin_input = io::stdin().lines().map(|x| x.unwrap()).collect();
-        format_string(stdin_input, &config)
+        format_stdin(&config)
     } else {
-        let (target_files, invalid_files) = match discover_nu_files(cli.files, &config.excludes) {
-            Ok(files) => files,
-            Err(err) => {
-                eprintln!("{}: {}", Color::LightRed.paint("error"), err);
-                return exit_with_code(ExitCode::Failure);
-            }
-        };
-        let mode = if cli.dry_run {
-            Mode::DryRun
-        } else {
-            Mode::default()
-        };
-        let mut results = handle_invalid_file(invalid_files);
-        results.extend(format_files(target_files, &config, &mode));
-        display_diagnostic_and_compute_exit_code(&results, cli.dry_run)
+        format_files_from_paths(cli.files, &config, cli.dry_run)
     };
 
     std::io::stdout()
@@ -137,15 +111,31 @@ fn main() {
     exit_with_code(exit_code);
 }
 
+/// Load configuration from file or use defaults
+fn load_config(cli_config: Option<PathBuf>) -> Result<Config, ConfigError> {
+    let config_file = cli_config.or_else(|| find_in_parent_dirs(DEFAULT_CONFIG_FILE));
+
+    match config_file {
+        None => Ok(Config::default()),
+        Some(path) => read_config(&path),
+    }
+}
+
 fn read_config(path: &PathBuf) -> Result<Config, ConfigError> {
     let content = std::fs::read_to_string(path)?;
     let content_nuon = nuon::from_nuon(&content, None)?;
     Config::try_from(content_nuon)
 }
 
-/// format a string passed via stdin and output it directly to stdout
-fn format_string(string: String, options: &Config) -> ExitCode {
-    match nu_formatter::format_string(&string, options) {
+/// Format a string passed via stdin and output it directly to stdout
+fn format_stdin(config: &Config) -> ExitCode {
+    let stdin_input: String = io::stdin()
+        .lines()
+        .map_while(Result::ok)
+        .collect::<Vec<_>>()
+        .join("\n");
+
+    match nu_formatter::format_string(&stdin_input, config) {
         Ok(output) => {
             println!("{output}");
             ExitCode::Success
@@ -161,43 +151,63 @@ fn format_string(string: String, options: &Config) -> ExitCode {
     }
 }
 
-fn handle_invalid_file(files: Vec<PathBuf>) -> Vec<(PathBuf, FileDiagnostic)> {
-    let mut results: Vec<(PathBuf, FileDiagnostic)> = vec![];
-    for file in files {
-        results.push((
-            file,
-            FileDiagnostic::Failure("cannot find the file specified".to_string()),
-        ));
-    }
-    results
+/// Format files from the given paths
+fn format_files_from_paths(paths: Vec<PathBuf>, config: &Config, dry_run: bool) -> ExitCode {
+    let (target_files, invalid_files) = match discover_nu_files(paths, &config.excludes) {
+        Ok(files) => files,
+        Err(err) => {
+            eprintln!("{}: {}", Color::LightRed.paint("error"), err);
+            return ExitCode::Failure;
+        }
+    };
+
+    let mode = if dry_run {
+        Mode::DryRun
+    } else {
+        Mode::default()
+    };
+
+    let mut results = mark_invalid_files(invalid_files);
+    results.extend(format_files(target_files, config, &mode));
+    display_diagnostic_and_compute_exit_code(&results, dry_run)
 }
 
-/// format a list of files, possibly one, and modify them in place
-/// if check mode is on, only check the files but do not modify them in place
+/// Mark invalid file paths as failures
+fn mark_invalid_files(files: Vec<PathBuf>) -> Vec<(PathBuf, FileDiagnostic)> {
+    files
+        .into_iter()
+        .map(|file| {
+            (
+                file,
+                FileDiagnostic::Failure("cannot find the file specified".to_string()),
+            )
+        })
+        .collect()
+}
+
+/// Format a list of files and modify them in place
+/// If check mode is on, only check the files but do not modify them
 fn format_files(
     files: Vec<PathBuf>,
-    options: &Config,
+    config: &Config,
     mode: &Mode,
 ) -> Vec<(PathBuf, FileDiagnostic)> {
     files
         .into_par_iter()
         .map(|file| {
             info!("formatting file: {:?}", &file);
-            nu_formatter::format_single_file(file, options, mode)
+            nu_formatter::format_single_file(file, config, mode)
         })
         .collect()
 }
 
-/// Display results and return the appropriate exit code after formatting in check mode
+/// Display results and return the appropriate exit code after formatting
 fn display_diagnostic_and_compute_exit_code(
     results: &[(PathBuf, FileDiagnostic)],
     check_mode: bool,
 ) -> ExitCode {
-    let mut already_formatted: usize = 0;
-    let mut reformatted_or_would_reformat: usize = 0;
-    let mut failures: usize = 0;
-    let mut at_least_one_failure = false;
-    let mut warning_messages: Vec<String> = vec![];
+    let mut stats = FormattingStats::default();
+    let mut warning_messages = Vec::new();
 
     let file_failed_msg = if check_mode {
         "Failed to check"
@@ -207,97 +217,110 @@ fn display_diagnostic_and_compute_exit_code(
 
     for (file, result) in results {
         match result {
-            FileDiagnostic::AlreadyFormatted => already_formatted += 1,
+            FileDiagnostic::AlreadyFormatted => stats.already_formatted += 1,
             FileDiagnostic::Reformatted => {
-                reformatted_or_would_reformat += 1;
+                stats.reformatted += 1;
                 if check_mode {
                     warning_messages.push(format!(
                         "Would reformat: {}",
                         Style::new().bold().paint(make_relative(file))
                     ));
-                };
+                }
             }
             FileDiagnostic::Failure(reason) => {
-                failures += 1;
+                stats.failures += 1;
                 eprintln!(
                     "{}: {} {}: {}",
                     Color::LightRed.paint("error"),
                     Style::new().bold().paint(file_failed_msg),
                     Style::new().bold().paint(make_relative(file)),
-                    &reason
+                    reason
                 );
-                at_least_one_failure = true;
             }
         }
     }
 
+    // Print warnings after processing
     for msg in warning_messages {
-        println!("{}", msg);
+        println!("{msg}");
     }
 
-    if already_formatted + reformatted_or_would_reformat + failures == 0 {
-        print!(
-            "{}: no Nushell files found under the given path(s)",
-            Color::LightYellow.paint("warning"),
-        );
-        return ExitCode::Success;
+    // Print summary and determine exit code
+    stats.print_summary(check_mode)
+}
+
+/// Statistics about formatting results
+#[derive(Default)]
+struct FormattingStats {
+    already_formatted: usize,
+    reformatted: usize,
+    failures: usize,
+}
+
+impl FormattingStats {
+    fn total(&self) -> usize {
+        self.already_formatted + self.reformatted + self.failures
     }
 
-    if reformatted_or_would_reformat > 0 {
-        let msg = if check_mode {
-            "would be reformatted"
-        } else {
-            "were formatted"
-        };
-        println!(
-            "{} file{} {}",
-            reformatted_or_would_reformat,
-            if reformatted_or_would_reformat == 1 {
-                ""
+    fn print_summary(&self, check_mode: bool) -> ExitCode {
+        if self.total() == 0 {
+            print!(
+                "{}: no Nushell files found under the given path(s)",
+                Color::LightYellow.paint("warning"),
+            );
+            return ExitCode::Success;
+        }
+
+        if self.reformatted > 0 {
+            let msg = if check_mode {
+                "would be reformatted"
             } else {
-                "s"
-            },
-            msg,
-        );
+                "were formatted"
+            };
+            println!(
+                "{} file{} {}",
+                self.reformatted,
+                plural(self.reformatted),
+                msg
+            );
+        }
+
+        if self.already_formatted > 0 {
+            println!(
+                "{} file{} already formatted",
+                self.already_formatted,
+                plural(self.already_formatted)
+            );
+        }
+
+        if self.failures > 0 {
+            ExitCode::Failure
+        } else if check_mode && self.reformatted > 0 {
+            ExitCode::CheckFailed
+        } else {
+            ExitCode::Success
+        }
     }
-    if already_formatted > 0 {
-        println!(
-            "{} file{} already formatted",
-            already_formatted,
-            if already_formatted == 1 { "" } else { "s" }
-        );
-    };
-    if at_least_one_failure {
-        ExitCode::Failure
-    } else if check_mode && reformatted_or_would_reformat > 0 {
-        ExitCode::CheckFailed
+}
+
+/// Return "s" for plural, empty string for singular
+fn plural(count: usize) -> &'static str {
+    if count == 1 {
+        ""
     } else {
-        ExitCode::Success
+        "s"
     }
 }
 
-/// Return the different files to analyze, taking only files with .nu extension and discarding files excluded in the config
-/// and the invalid paths provided
+/// Return the different files to analyze, filtering by .nu extension and config excludes
 fn discover_nu_files(
     paths: Vec<PathBuf>,
-    excludes: &Vec<String>,
+    excludes: &[String],
 ) -> Result<(Vec<PathBuf>, Vec<PathBuf>), ConfigError> {
-    let mut valid_paths: Vec<PathBuf> = vec![];
-    let mut invalid_paths: Vec<PathBuf> = vec![];
+    let (valid_paths, invalid_paths): (Vec<_>, Vec<_>) =
+        paths.into_iter().partition(|p| p.exists());
 
-    for path in paths {
-        if path.exists() {
-            valid_paths.push(path);
-        } else {
-            invalid_paths.push(path);
-        }
-    }
-
-    let mut overrides = OverrideBuilder::new(".");
-    for pattern in excludes {
-        overrides.add(&format!("!{}", pattern))?;
-    }
-    let overrides = overrides.build()?;
+    let overrides = build_overrides(excludes)?;
 
     let nu_files = valid_paths
         .iter()
@@ -307,43 +330,52 @@ fn discover_nu_files(
                 .build()
                 .filter_map(Result::ok)
                 .filter(is_nu_file)
-                .map(|path| path.into_path())
-                .collect::<Vec<PathBuf>>()
+                .map(|entry| entry.into_path())
         })
         .collect();
 
     Ok((nu_files, invalid_paths))
 }
 
-/// Return whether a `DirEntry` is a .nu file or not
+/// Build override rules for excluded patterns
+fn build_overrides(excludes: &[String]) -> Result<ignore::overrides::Override, ConfigError> {
+    let mut builder = OverrideBuilder::new(".");
+    for pattern in excludes {
+        builder.add(&format!("!{pattern}"))?;
+    }
+    Ok(builder.build()?)
+}
+
+/// Return whether a `DirEntry` is a .nu file
 fn is_nu_file(entry: &DirEntry) -> bool {
-    entry.file_type().map(|ft| ft.is_file()).unwrap_or(false)
+    entry.file_type().is_some_and(|ft| ft.is_file())
         && entry.path().extension().is_some_and(|ext| ext == "nu")
 }
 
+/// Convert a path to a relative path string for display
 fn make_relative(path: &Path) -> String {
-    let current = std::env::current_dir().unwrap_or(PathBuf::from("."));
-    path.strip_prefix(&current)
+    std::env::current_dir()
+        .ok()
+        .and_then(|cwd| path.strip_prefix(&cwd).ok())
         .unwrap_or(path)
         .display()
         .to_string()
-        .replace("\\", "/")
+        .replace('\\', "/")
         .trim_start_matches("./")
         .to_string()
 }
 
-/// Search for `filename` in current or any parent directories.
-/// If `start_dir` is not provided, the current directory is used
+/// Search for `filename` in current or any parent directories
 fn find_in_parent_dirs(filename: &str) -> Option<PathBuf> {
-    let start_dir = std::env::current_dir().unwrap_or(PathBuf::from("."));
+    let start_dir = std::env::current_dir().unwrap_or_else(|_| PathBuf::from("."));
 
-    let mut dir = Some(start_dir.as_path());
-    while let Some(current) = dir {
-        let candidate = current.join(filename);
+    let mut current = Some(start_dir.as_path());
+    while let Some(dir) = current {
+        let candidate = dir.join(filename);
         if candidate.exists() {
             return Some(candidate);
         }
-        dir = current.parent();
+        current = dir.parent();
     }
     None
 }
@@ -402,25 +434,31 @@ mod tests {
     #[rstest]
     #[case(vec![
         (PathBuf::from("a.nu"), FileDiagnostic::AlreadyFormatted),
-        (PathBuf::from("b.nu"), FileDiagnostic::AlreadyFormatted),], false, ExitCode::Success)]
+        (PathBuf::from("b.nu"), FileDiagnostic::AlreadyFormatted),
+    ], false, ExitCode::Success)]
     #[case(vec![
         (PathBuf::from("a.nu"), FileDiagnostic::AlreadyFormatted),
-        (PathBuf::from("b.nu"), FileDiagnostic::AlreadyFormatted),], true, ExitCode::Success)]
+        (PathBuf::from("b.nu"), FileDiagnostic::AlreadyFormatted),
+    ], true, ExitCode::Success)]
     #[case(vec![
         (PathBuf::from("a.nu"), FileDiagnostic::AlreadyFormatted),
-        (PathBuf::from("b.nu"), FileDiagnostic::Reformatted),], false, ExitCode::Success)]
+        (PathBuf::from("b.nu"), FileDiagnostic::Reformatted),
+    ], false, ExitCode::Success)]
     #[case(vec![
         (PathBuf::from("a.nu"), FileDiagnostic::AlreadyFormatted),
-        (PathBuf::from("b.nu"), FileDiagnostic::Reformatted),], true, ExitCode::CheckFailed)]
+        (PathBuf::from("b.nu"), FileDiagnostic::Reformatted),
+    ], true, ExitCode::CheckFailed)]
     #[case(vec![
         (PathBuf::from("a.nu"), FileDiagnostic::AlreadyFormatted),
         (PathBuf::from("b.nu"), FileDiagnostic::Reformatted),
-        (PathBuf::from("c.nu"), FileDiagnostic::Failure("some error".to_string())),], false, ExitCode::Failure)]
+        (PathBuf::from("c.nu"), FileDiagnostic::Failure("some error".to_string())),
+    ], false, ExitCode::Failure)]
     #[case(vec![
         (PathBuf::from("a.nu"), FileDiagnostic::AlreadyFormatted),
         (PathBuf::from("b.nu"), FileDiagnostic::Reformatted),
-        (PathBuf::from("c.nu"), FileDiagnostic::Failure("some error".to_string())),], true, ExitCode::Failure)]
-    fn exit_code(
+        (PathBuf::from("c.nu"), FileDiagnostic::Failure("some error".to_string())),
+    ], true, ExitCode::Failure)]
+    fn exit_code_tests(
         #[case] results: Vec<(PathBuf, FileDiagnostic)>,
         #[case] check_mode: bool,
         #[case] expected: ExitCode,
diff --git a/test.nu b/test.nu
new file mode 100644
index 0000000..562c173
--- /dev/null
+++ b/test.nu
@@ -0,0 +1,9 @@
+# function comment
+def fun1 [text: string] { print $"fun1: ($text)" }
+# this is a
+# multi-line comment
+# before a function
+def fun2 [text: string] { print $"fun2: ($text)" }
+# call the functions
+fun1 "hello"
+fun2 "world"
diff --git a/tests/fixtures/basic.nu b/tests/fixtures/basic.nu
new file mode 100644
index 0000000..0b8ceae
--- /dev/null
+++ b/tests/fixtures/basic.nu
@@ -0,0 +1,58 @@
+# Basic Nushell constructs for formatter testing
+# Simple variable declarations
+let x = 1
+let name = "world"
+mut counter = 0
+# Arithmetic expressions
+let result = $x + 10
+let sum = 1 + 2 + 3
+# Function definition
+def greet [name: string] { print $"Hello, ($name)!" }
+# Function with multiple parameters
+def add [a: int, b: int] { $a + $b }
+# Function with default value
+def greet_default [name: string = stranger] { print $"Hello, ($name)!" }
+# Lists
+let numbers = [1, 2, 3, 4, 5]
+let mixed = [1, "two", 3.0]
+let empty_list = []
+# Records
+let person = {name: "Alice", age: 30}
+let config = {host: "localhost", port: 8080, debug: true}
+let empty_record = {}
+# Conditionals
+if true { print "yes" } else { print "no" }
+# Nested if
+if $x > 0 {
+    if $x > 10 { print "large" } else { print "small" }
+}
+# For loop
+for item in [1, 2, 3] { print $item }
+# While loop
+while $counter < 5 { $counter = ($counter + 1) }
+# Loop
+loop {
+    if $counter > 10 { break }
+    $counter = ($counter + 1)
+}
+# Closures
+let double = {|x| $x * 2 }
+let add_one = {|n: int| $n + 1 }
+# String interpolation
+let greeting = $"Hello, ($name)!"
+# Range
+let range = 1..10
+let range_step = 1,2..10
+# Binary operations
+let and_result = true and false
+let or_result = true or false
+let not_result = not true
+# Match expression (if available in lang)
+# match $x {
+#     1 => { print "one" }
+#     _ => { print "other" }
+# }
+# Error handling
+try { error make {msg: "test error"} } catch { print "caught error" }
+# Comments at end of file
+# End of test file
diff --git a/tests/fixtures/complex.nu b/tests/fixtures/complex.nu
new file mode 100644
index 0000000..66494a8
--- /dev/null
+++ b/tests/fixtures/complex.nu
@@ -0,0 +1,87 @@
+# Complex Nushell constructs for formatter testing
+# Module definition
+module math {
+    export def add [a: int, b: int] { $a + $b }
+    export def multiply [a: int, b: int] { $a * $b }
+}
+# Using modules
+use math
+# Custom commands with type annotations
+def process-data [data: list<record<name: string, value: int>>, --verbose(-v), --output(-o): string = result.txt] {
+    if $verbose { print "Processing data..." }
+    $data
+}
+# Nested data structures
+let complex_data = {
+    users: [
+        {
+            name: "Alice"
+            age: 30
+            scores: [95, 87, 92]
+        }
+        {
+            name: "Bob"
+            age: 25
+            scores: [88, 91, 85]
+        }
+    ]
+    metadata: {version: "1.0", created: 2024-01-01}
+}
+# Match expressions
+def classify [x: int] { match $x {
+    0 => "zero"
+    1..10 => "small"
+    _ => "large"
+} }
+# Closures with multiple parameters
+let transform = {|x, y, z| ($x + $y) * $z }
+# Pipelines with closures
+let processed = [1, 2, 3, 4, 5] | each {|n| $n * 2 } | where {|n| $n > 4 }
+# Error handling with catch
+def safe_divide [a: int, b: int] {
+    try {
+        if $b == 0 { error make {msg: "Division by zero"} }
+        $a / $b
+    } catch {
+        print $"Error: ($err.msg)"
+        null
+    }
+}
+# Conditional with else if
+def grade [score: int] {
+    if $score >= 90 { "A" } else if $score >= 80 { "B" } else if $score >= 70 { "C" } else { "F" }
+}
+# Nested loops
+for i in 1..3 {
+    for j in 1..3 { print $"($i), ($j)" }
+}
+# Table with complex data
+let report = [[name, department, salary]; ["Alice", "Engineering", 100000], ["Bob", "Marketing", 80000], ["Carol", "Engineering", 95000]]
+# String with multiple interpolations
+let message = $"User ($complex_data.users.0.name) has scores: ($complex_data.users.0.scores | str join ', ')"
+# Range operations
+let numbers = 1..100 | where {|n| $n mod 2 == 0 } | take 10
+# Record spread
+let base_config = {host: "localhost", port: 8080}
+let full_config = {...$base_config, debug: true, timeout: 30}
+# List spread
+let list1 = [1, 2, 3]
+let list2 = [0, ...$list1, 4, 5]
+# Multiline string (if supported)
+let long_text = "This is a
+multiline
+string"
+# Binary operations with parentheses
+let result = (1 + 2) * (3 + 4) / 2
+# Comparison chains
+let in_range = $result > 0 and $result < 100
+# Null coalescing (if supported)
+let value = $env.? | default "fallback"
+# Return from function
+def early_return [x: int] {
+    if $x < 0 { return "negative" }
+    if $x == 0 { return "zero" }
+    "positive"
+}
+# Final comment
+# End of complex test file
diff --git a/tests/fixtures/expected/alias.nu b/tests/fixtures/expected/alias.nu
new file mode 100644
index 0000000..9077dbd
--- /dev/null
+++ b/tests/fixtures/expected/alias.nu
@@ -0,0 +1,6 @@
+alias ll = ls -l
+alias la = ls -a
+alias lla = ls -la
+alias grep = grep --color=auto
+alias myalias = echo "hello world"
+alias complex = ls | get name | first
diff --git a/tests/fixtures/expected/binary_ops.nu b/tests/fixtures/expected/binary_ops.nu
new file mode 100644
index 0000000..db86e82
--- /dev/null
+++ b/tests/fixtures/expected/binary_ops.nu
@@ -0,0 +1,26 @@
+1 + 2
+3 - 1
+2 * 4
+8 / 2
+10 mod 3
+2 ** 3
+$x + $y
+$a * $b + $c
+(1 + 2) * 3
+1 + (2 * 3)
+true and false
+true or false
+not true
+$x > 0 and $x < 10
+$a == $b
+$a != $b
+$a < $b
+$a <= $b
+$a > $b
+$a >= $b
+"hello" ++ " world"
+"hello" =~ "ell"
+"hello" !~ "xyz"
+[1, 2] ++ [3, 4]
+1 in [1, 2, 3]
+4 not-in [1, 2, 3]
diff --git a/tests/fixtures/expected/break_continue.nu b/tests/fixtures/expected/break_continue.nu
new file mode 100644
index 0000000..6241809
--- /dev/null
+++ b/tests/fixtures/expected/break_continue.nu
@@ -0,0 +1,17 @@
+loop { break }
+loop { break }
+for x in [1, 2, 3] {
+    if $x == 2 { break }
+}
+for x in [1, 2, 3] {
+    if $x == 2 { continue }
+}
+while true { break }
+while $x > 0 {
+    if $x == 5 { continue }
+    $x = $x - 1
+}
+loop {
+    if $done { break }
+    continue
+}
diff --git a/tests/fixtures/expected/cell_path.nu b/tests/fixtures/expected/cell_path.nu
new file mode 100644
index 0000000..e6db170
--- /dev/null
+++ b/tests/fixtures/expected/cell_path.nu
@@ -0,0 +1,6 @@
+$record.name
+$record.a.b.c
+$list.0
+$list.5
+$data.users.0.name
+$table.column.0
diff --git a/tests/fixtures/expected/closure.nu b/tests/fixtures/expected/closure.nu
new file mode 100644
index 0000000..29be762
--- /dev/null
+++ b/tests/fixtures/expected/closure.nu
@@ -0,0 +1,8 @@
+{|| 1 }
+{|x| $x }
+{|x| $x * 2 }
+{|x| $x * 2 }
+{|x, y| $x + $y }
+{|x: int| $x * 2 }
+{|x: int, y: int| $x + $y }
+{|x| $x * 2 }
diff --git a/tests/fixtures/expected/comment.nu b/tests/fixtures/expected/comment.nu
new file mode 100644
index 0000000..5fa40ff
--- /dev/null
+++ b/tests/fixtures/expected/comment.nu
@@ -0,0 +1,12 @@
+# This is a comment
+let x = 1
+# Another comment without space
+let y = 2
+let z = 3 # inline comment
+# Multiple
+# consecutive
+# comments
+def foo [] { 1 }
+def bar [] { 
+# comment inside block
+print "hello" }
diff --git a/tests/fixtures/expected/const_statement.nu b/tests/fixtures/expected/const_statement.nu
new file mode 100644
index 0000000..ac9012b
--- /dev/null
+++ b/tests/fixtures/expected/const_statement.nu
@@ -0,0 +1,5 @@
+const x = 1
+const y = 2
+const PI = 3.14159
+const name = "hello"
+const result = 1 + 2
diff --git a/tests/fixtures/expected/datetime.nu b/tests/fixtures/expected/datetime.nu
new file mode 100644
index 0000000..b81bf2a
--- /dev/null
+++ b/tests/fixtures/expected/datetime.nu
@@ -0,0 +1,8 @@
+2024-01-15
+2024-01-15T10:30:00
+2024-01-15T10:30:00+05:00
+2024-01-15T10:30:00Z
+2024-12-31
+2000-01-01T00:00:00
+1970-01-01T00:00:00Z
+2024-06-15T14:30:00-07:00
diff --git a/tests/fixtures/expected/def_statement.nu b/tests/fixtures/expected/def_statement.nu
new file mode 100644
index 0000000..fb896eb
--- /dev/null
+++ b/tests/fixtures/expected/def_statement.nu
@@ -0,0 +1,14 @@
+def foo [] { 1 }
+def bar [x] { $x }
+def add [a: int, b: int] { $a + $b }
+def greet [name: string] { $"Hello ($name)!" }
+def with_default [x: int = 10] { $x * 2 }
+def with_flag [--verbose(-v)] {
+    if $verbose { print "verbose" }
+}
+def complex [
+    a: int
+    b: string
+    --flag(-f)
+    --value(-v): int = 5
+] { print $"($a) ($b) $flag $value" }
diff --git a/tests/fixtures/expected/do_block.nu b/tests/fixtures/expected/do_block.nu
new file mode 100644
index 0000000..d8ede7b
--- /dev/null
+++ b/tests/fixtures/expected/do_block.nu
@@ -0,0 +1,14 @@
+do { print "hello" }
+do { print "hello" }
+do { $x + 1 }
+do {
+    ls | get name
+}
+do --ignore-errors { risky_command }
+do -i { might_fail }
+do {
+    let x = 1
+    $x + 2
+}
+do --env { $env.PATH }
+do {|x| $x * 2 }
diff --git a/tests/fixtures/expected/error_make.nu b/tests/fixtures/expected/error_make.nu
new file mode 100644
index 0000000..c005227
--- /dev/null
+++ b/tests/fixtures/expected/error_make.nu
@@ -0,0 +1,22 @@
+error make {msg: "simple error"}
+error make {msg: "simple error"}
+error make {
+    msg: "error message"
+    label: {text: "label text"}
+}
+error make {
+    msg: "error"
+    label: {
+        text: "here"
+        span: $span
+    }
+}
+error make {msg: "test error"}
+error make {
+    msg: "detailed error"
+    label: {text: "error occurred here"}
+}
+error make {
+    msg: $"interpolated ($value) error"
+}
+if $invalid { error make {msg: "validation failed"} }
diff --git a/tests/fixtures/expected/export.nu b/tests/fixtures/expected/export.nu
new file mode 100644
index 0000000..4185ef0
--- /dev/null
+++ b/tests/fixtures/expected/export.nu
@@ -0,0 +1,5 @@
+export def foo [] { 1 }
+export def bar [x: int] { $x * 2 }
+export def add [a: int, b: int] { $a + $b }
+export alias ll = ls -l
+export alias la = ls -a
diff --git a/tests/fixtures/expected/extern.nu b/tests/fixtures/expected/extern.nu
new file mode 100644
index 0000000..2da6cd5
--- /dev/null
+++ b/tests/fixtures/expected/extern.nu
@@ -0,0 +1,24 @@
+extern "git" []
+extern "git status" [--short(-s)]
+extern "cargo build" [--release --target: string]
+extern "npm" [
+    command: string
+    --global(-g)
+    --save-dev(-D)
+]
+extern "docker run" [
+    image: string
+    --detach(-d)
+    --name: string
+    --port(-p): string
+    ...args: string
+]
+extern ls []
+extern cat [file: path]
+extern grep [
+    pattern: string
+    ...files: path
+    -i
+    -r
+    -n
+]
diff --git a/tests/fixtures/expected/external_call.nu b/tests/fixtures/expected/external_call.nu
new file mode 100644
index 0000000..9651d87
--- /dev/null
+++ b/tests/fixtures/expected/external_call.nu
@@ -0,0 +1,5 @@
+^git status
+^echo "hello world"
+^git log --oneline
+^ls -la /tmp
+^command arg1 arg2
diff --git a/tests/fixtures/expected/for_loop.nu b/tests/fixtures/expected/for_loop.nu
new file mode 100644
index 0000000..78e5788
--- /dev/null
+++ b/tests/fixtures/expected/for_loop.nu
@@ -0,0 +1,5 @@
+for x in [1, 2, 3] { print $x }
+for x in [1, 2, 3] { print $x }
+for item in $list { print $item }
+for i in 1..10 { print $i }
+for item in [1, 2, 3] { print $item }
diff --git a/tests/fixtures/expected/glob_pattern.nu b/tests/fixtures/expected/glob_pattern.nu
new file mode 100644
index 0000000..414f138
--- /dev/null
+++ b/tests/fixtures/expected/glob_pattern.nu
@@ -0,0 +1,10 @@
+*.nu
+**/*.rs
+src/**/*.nu
+test?.nu
+[abc].txt
+file[0-9].nu
+path/to/*.txt
+**/*
+*.{nu,rs}
+!excluded.nu
diff --git a/tests/fixtures/expected/hide.nu b/tests/fixtures/expected/hide.nu
new file mode 100644
index 0000000..606cd32
--- /dev/null
+++ b/tests/fixtures/expected/hide.nu
@@ -0,0 +1,7 @@
+hide foo
+hide foo
+hide mymodule
+hide mymodule bar
+hide-env FOO
+hide-env FOO
+hide-env PATH
diff --git a/tests/fixtures/expected/if_else.nu b/tests/fixtures/expected/if_else.nu
new file mode 100644
index 0000000..5c2174f
--- /dev/null
+++ b/tests/fixtures/expected/if_else.nu
@@ -0,0 +1,9 @@
+if true { print "yes" }
+if false { print "no" }
+if true { print "yes" } else { print "no" }
+if true { print "yes" } else { print "no" }
+if $x > 0 { print "positive" } else if $x < 0 { print "negative" } else { print "zero" }
+if true {
+    print "multiline"
+    print "body"
+}
diff --git a/tests/fixtures/expected/let_statement.nu b/tests/fixtures/expected/let_statement.nu
new file mode 100644
index 0000000..42637ef
--- /dev/null
+++ b/tests/fixtures/expected/let_statement.nu
@@ -0,0 +1,5 @@
+let x = 1
+let y = 2
+let name = "hello"
+let result = $x + $y
+let long_name = "this is a long string"
diff --git a/tests/fixtures/expected/list.nu b/tests/fixtures/expected/list.nu
new file mode 100644
index 0000000..ae79195
--- /dev/null
+++ b/tests/fixtures/expected/list.nu
@@ -0,0 +1,12 @@
+[]
+[1, 2, 3]
+[1, 2, 3]
+[1, 2, 3]
+["a", "b", "c"]
+[1, "two", 3.0, true]
+[1, 2, 3]
+[
+    [1, 2]
+    [3, 4]
+    [5, 6]
+]
diff --git a/tests/fixtures/expected/loop_statement.nu b/tests/fixtures/expected/loop_statement.nu
new file mode 100644
index 0000000..3aa2247
--- /dev/null
+++ b/tests/fixtures/expected/loop_statement.nu
@@ -0,0 +1,9 @@
+loop { break }
+loop { break }
+loop {
+    if $x > 10 { break }
+}
+loop {
+    $x = $x + 1
+    if $x > 10 { break }
+}
diff --git a/tests/fixtures/expected/match_expr.nu b/tests/fixtures/expected/match_expr.nu
new file mode 100644
index 0000000..0ec71cd
--- /dev/null
+++ b/tests/fixtures/expected/match_expr.nu
@@ -0,0 +1,31 @@
+match $x {
+    0=>"zero" => 1=>"one"
+}
+match $x {
+    0 => "zero"
+    _ => "other"
+}
+match $x {
+    0 => "zero"
+    1 => "one"
+    _ => "other"
+}
+match $value {
+    "a"=>"alpha" => "b"=>"beta"
+}
+match $num {
+    0 => "zero"
+    1..10 => "small"
+    _ => "large"
+}
+match $data {
+    {type: "user"} => "is user"
+    {type: "admin"} => "is admin"
+    _ => "unknown type"
+}
+match $list {
+    [] => "empty"
+    [x] => $"single: ($x)"
+    [x, y] => $"pair: ($x), ($y)"
+    _ => "many"
+}
diff --git a/tests/fixtures/expected/module.nu b/tests/fixtures/expected/module.nu
new file mode 100644
index 0000000..1fc22ca
--- /dev/null
+++ b/tests/fixtures/expected/module.nu
@@ -0,0 +1,11 @@
+module mymod {
+    export def foo [] { 1 }
+}
+module math {
+    export def add [a, b] { $a + $b }
+    export def sub [a, b] { $a - $b }
+}
+module utils {
+    export def greet [name] { $"Hello ($name)" }
+    export def farewell [name] { $"Goodbye ($name)" }
+}
diff --git a/tests/fixtures/expected/multiline_pipeline.nu b/tests/fixtures/expected/multiline_pipeline.nu
new file mode 100644
index 0000000..ec6509c
--- /dev/null
+++ b/tests/fixtures/expected/multiline_pipeline.nu
@@ -0,0 +1,7 @@
+ls | where type == "file" | get name
+ls | get name | first
+[1, 2, 3] | each {|x| $x * 2 } | where {|x| $x > 2 }
+$data | group-by category | transpose key value | each {|row| {name: $row.key, count: ($row.value | length)} }
+open file.txt | lines | length
+ls | sort-by size | reverse | first 5
+$table | select name age | where age > 18
diff --git a/tests/fixtures/expected/mut_statement.nu b/tests/fixtures/expected/mut_statement.nu
new file mode 100644
index 0000000..80ba2ca
--- /dev/null
+++ b/tests/fixtures/expected/mut_statement.nu
@@ -0,0 +1,5 @@
+mut x = 1
+mut y = 2
+mut counter = 0
+mut name = "hello"
+mut result = $x + $y
diff --git a/tests/fixtures/expected/nested_structures.nu b/tests/fixtures/expected/nested_structures.nu
new file mode 100644
index 0000000..8711748
--- /dev/null
+++ b/tests/fixtures/expected/nested_structures.nu
@@ -0,0 +1,87 @@
+# Nested structures ground truth
+# Nested records
+{
+    a: {
+        b: {c: 1}
+    }
+}
+{
+    a: {
+        b: {c: 1}
+    }
+}
+{
+    outer: {
+        middle: {inner: "value"}
+    }
+}
+# Nested lists
+[
+    [1, 2]
+    [3, 4]
+    [5, 6]
+]
+[
+    [1, 2]
+    [3, 4]
+    [5, 6]
+]
+[
+    [1, 2, 3]
+    [4, 5, 6]
+    [7, 8, 9]
+]
+# Records containing lists
+{
+    names: ["Alice", "Bob"]
+    ages: [30, 25]
+}
+{
+    data: [1, 2, 3]
+    labels: ["a", "b", "c"]
+}
+# Lists containing records
+[
+    {name: "Alice"}
+    {name: "Bob"}
+]
+[
+    {id: 1, value: "first"}
+    {id: 2, value: "second"}
+]
+# Deeply nested mixed structures
+{
+    users: [
+        {
+            name: "Alice"
+            scores: [95, 87, 92]
+            metadata: {active: true}
+        }
+        {
+            name: "Bob"
+            scores: [88, 91, 85]
+            metadata: {active: false}
+        }
+    ]
+    config: {
+        version: "1.0"
+        settings: {debug: true, verbose: false}
+    }
+}
+# Nested closures in data
+let transform = {|data| 
+    $data | each {|item| {|x| $x * $item } }
+}
+# Nested control flow
+if $outer {
+    if $inner {
+        if $deep { "very deep" } else { "deep" }
+    }
+}
+# Nested function definitions
+def outer [] {
+    def inner [] { "inner result" }
+    inner
+}
+# Complex pipeline with nested structures
+$data | each {|row| {name: $row.name, values: ($row.items | each {|i| $i * 2 })} } | where {|r| ($r.values | length) > 0 }
diff --git a/tests/fixtures/expected/nothing.nu b/tests/fixtures/expected/nothing.nu
new file mode 100644
index 0000000..1492fe0
--- /dev/null
+++ b/tests/fixtures/expected/nothing.nu
@@ -0,0 +1,7 @@
+null
+null
+let x = null
+if $value == null { "is null" }
+$record.field | default null
+[1, null, 3]
+{a: null, b: 2}
diff --git a/tests/fixtures/expected/overlay.nu b/tests/fixtures/expected/overlay.nu
new file mode 100644
index 0000000..f6d5daa
--- /dev/null
+++ b/tests/fixtures/expected/overlay.nu
@@ -0,0 +1,11 @@
+overlay use mymod
+overlay use mymod
+overlay use module.nu
+overlay use mod as alias
+overlay hide mymod
+overlay hide mymod
+overlay hide
+overlay list
+overlay new temp
+overlay use mymod --prefix
+overlay hide mymod --keep-env [VAR1, VAR2]
diff --git a/tests/fixtures/expected/pipeline.nu b/tests/fixtures/expected/pipeline.nu
new file mode 100644
index 0000000..737afa4
--- /dev/null
+++ b/tests/fixtures/expected/pipeline.nu
@@ -0,0 +1,6 @@
+ls | get name
+ls | get name
+ls | get name | first
+[1, 2, 3] | each {|x| $x * 2 }
+[1, 2, 3] | each {|x| $x * 2 } | where {|x| $x > 2 }
+$data | where size > 1kb | sort-by name
diff --git a/tests/fixtures/expected/range.nu b/tests/fixtures/expected/range.nu
new file mode 100644
index 0000000..768df1b
--- /dev/null
+++ b/tests/fixtures/expected/range.nu
@@ -0,0 +1,6 @@
+1..10
+1..100
+0..-5
+1..2..10
+0..
+..10
diff --git a/tests/fixtures/expected/record.nu b/tests/fixtures/expected/record.nu
new file mode 100644
index 0000000..d70b577
--- /dev/null
+++ b/tests/fixtures/expected/record.nu
@@ -0,0 +1,13 @@
+{}
+{a: 1}
+{a: 1, b: 2}
+{a: 1, b: 2}
+{a: 1, b: 2}
+{name: "Alice", age: 30}
+{name: "Alice", age: 30, city: "NYC"}
+{
+    a: {
+        b: {c: 1}
+    }
+}
+{...$base, extra: true}
diff --git a/tests/fixtures/expected/return_statement.nu b/tests/fixtures/expected/return_statement.nu
new file mode 100644
index 0000000..423a773
--- /dev/null
+++ b/tests/fixtures/expected/return_statement.nu
@@ -0,0 +1,17 @@
+def returns_nothing [] { return }
+def returns_one [] { return 1 }
+def returns_42 [] { return 42 }
+def returns_var [x] { return $x }
+def returns_expr [x, y] { return ($x + $y) }
+def returns_string [] { return "hello" }
+def returns_list [] { return [1, 2, 3] }
+def returns_record [] { return {a: 1, b: 2} }
+def foo [] { return 1 }
+def bar [x] {
+    if $x > 0 { return "positive" }
+    return "not positive"
+}
+def early [x] {
+    if $x == null { return }
+    $x
+}
diff --git a/tests/fixtures/expected/source.nu b/tests/fixtures/expected/source.nu
new file mode 100644
index 0000000..bf79cdf
--- /dev/null
+++ b/tests/fixtures/expected/source.nu
@@ -0,0 +1,10 @@
+source script.nu
+source   script.nu
+source ./path/to/file.nu
+source ~/scripts/utils.nu
+source ../other/script.nu
+source "path with spaces/script.nu"
+source $script_path
+source-env config.nu
+source-env   config.nu
+source-env ./env_setup.nu
diff --git a/tests/fixtures/expected/spread.nu b/tests/fixtures/expected/spread.nu
new file mode 100644
index 0000000..b981928
--- /dev/null
+++ b/tests/fixtures/expected/spread.nu
@@ -0,0 +1,9 @@
+[...$list]
+[1, ...$rest]
+[...$first, ...$second]
+{...$record}
+{...$base, extra: true}
+{a: 1, ...$rest, b: 2}
+command ...$args
+[0, ...$middle, 10]
+{...$defaults, ...$overrides}
diff --git a/tests/fixtures/expected/string_interpolation.nu b/tests/fixtures/expected/string_interpolation.nu
new file mode 100644
index 0000000..c8305cf
--- /dev/null
+++ b/tests/fixtures/expected/string_interpolation.nu
@@ -0,0 +1,5 @@
+$"hello"
+$"Hello ($name)"
+$"Result: ($x + $y)"
+$"Multi ($a) values ($b) here ($c)"
+$"   spaces   ($x)   preserved   "
diff --git a/tests/fixtures/expected/subexpression.nu b/tests/fixtures/expected/subexpression.nu
new file mode 100644
index 0000000..3e1cd40
--- /dev/null
+++ b/tests/fixtures/expected/subexpression.nu
@@ -0,0 +1,11 @@
+(1 + 2)
+(1 + 2)
+(1 + 2)
+($x + $y)
+(ls)
+(ls | get name)
+(ls | get name)
+let result = (1 + 2) * 3
+let value = ($x + (($y * 2)))
+print (echo "hello")
+if (true) { print "yes" }
diff --git a/tests/fixtures/expected/table.nu b/tests/fixtures/expected/table.nu
new file mode 100644
index 0000000..de03714
--- /dev/null
+++ b/tests/fixtures/expected/table.nu
@@ -0,0 +1,10 @@
+[[a, b]; [1, 2], [3, 4]]
+[[a, b]; [1, 2], [3, 4]]
+[[name, age]; ["Alice", 30], ["Bob", 25]]
+[[col1, col2, col3]; [1, 2, 3], [4, 5, 6], [7, 8, 9]]
+[[a]; [1]]
+[
+    [header1, header2]
+    [val1, val2]
+    [val3, val4]
+]
diff --git a/tests/fixtures/expected/try_catch.nu b/tests/fixtures/expected/try_catch.nu
new file mode 100644
index 0000000..31a2503
--- /dev/null
+++ b/tests/fixtures/expected/try_catch.nu
@@ -0,0 +1,6 @@
+try { error make {msg: "test"} }
+try { error make {msg: "test"} }
+try { error make {msg: "test"} } catch { print "caught" }
+try { 1 / 0 } catch { print "error" }
+try { risky_operation } catch { print "error occurred" }
+try { risky } catch { print $err.msg }
diff --git a/tests/fixtures/expected/use_statement.nu b/tests/fixtures/expected/use_statement.nu
new file mode 100644
index 0000000..06714a4
--- /dev/null
+++ b/tests/fixtures/expected/use_statement.nu
@@ -0,0 +1,8 @@
+use std
+use std
+use std *
+use std assert
+use std [assert, log]
+use module.nu
+use module.nu foo
+use module.nu [foo, bar]
diff --git a/tests/fixtures/expected/value_with_unit.nu b/tests/fixtures/expected/value_with_unit.nu
new file mode 100644
index 0000000..d2d0dbb
--- /dev/null
+++ b/tests/fixtures/expected/value_with_unit.nu
@@ -0,0 +1,15 @@
+1kb
+5mb
+10gb
+100ms
+5sec
+30min
+2hr
+1day
+7wk
+1024b
+500ns
+100us
+10kb
+5mb + 10mb
+1hr + 30min
diff --git a/tests/fixtures/expected/where_clause.nu b/tests/fixtures/expected/where_clause.nu
new file mode 100644
index 0000000..893667f
--- /dev/null
+++ b/tests/fixtures/expected/where_clause.nu
@@ -0,0 +1,10 @@
+ls | where size > 1kb
+ls | where name == "test"
+ls | where type == "file"
+$data | where size > 1kb
+$list | where name == "test"
+$table | where $it.value > 10
+$records | where status == "active" and age > 18
+$items | where {|row| $row.count > 0 }
+ls | where size > 1mb | where name =~ "\.rs$"
+$data | where { $in.field | is-not-empty }
diff --git a/tests/fixtures/expected/while_loop.nu b/tests/fixtures/expected/while_loop.nu
new file mode 100644
index 0000000..1168ffc
--- /dev/null
+++ b/tests/fixtures/expected/while_loop.nu
@@ -0,0 +1,7 @@
+while true { break }
+while $x > 0 { $x = $x - 1 }
+while $condition { print "looping" }
+while $counter < 10 {
+    $counter = $counter + 1
+    print $counter
+}
diff --git a/tests/fixtures/input/alias.nu b/tests/fixtures/input/alias.nu
new file mode 100644
index 0000000..049cfdb
--- /dev/null
+++ b/tests/fixtures/input/alias.nu
@@ -0,0 +1,6 @@
+alias ll  =  ls -l
+alias la   =   ls -a
+alias lla  =   ls -la
+alias grep  =  grep --color=auto
+alias myalias   =   echo "hello world"
+alias complex  =   ls | get name | first
diff --git a/tests/fixtures/input/binary_ops.nu b/tests/fixtures/input/binary_ops.nu
new file mode 100644
index 0000000..0562ca6
--- /dev/null
+++ b/tests/fixtures/input/binary_ops.nu
@@ -0,0 +1,26 @@
+1  +  2
+3  -  1
+2  *  4
+8  /  2
+10  mod  3
+2  **  3
+$x  +  $y
+$a  *  $b  +  $c
+(1  +  2)  *  3
+1  +  (2  *  3)
+true  and  false
+true  or  false
+not  true
+$x  >  0  and  $x  <  10
+$a  ==  $b
+$a  !=  $b
+$a  <  $b
+$a  <=  $b
+$a  >  $b
+$a  >=  $b
+"hello"  ++  " world"
+"hello"  =~  "ell"
+"hello"  !~  "xyz"
+[1,  2]  ++  [3,  4]
+1  in  [1,  2,  3]
+4  not-in  [1,  2,  3]
diff --git a/tests/fixtures/input/break_continue.nu b/tests/fixtures/input/break_continue.nu
new file mode 100644
index 0000000..2731bbd
--- /dev/null
+++ b/tests/fixtures/input/break_continue.nu
@@ -0,0 +1,17 @@
+loop {   break   }
+loop  {  break  }
+for x in [1,  2,  3] {
+    if $x  ==  2   {   break   }
+}
+for x in  [1,  2,  3]  {
+    if $x  ==  2  {  continue  }
+}
+while true  {  break  }
+while $x  >  0 {
+    if $x  ==  5  {  continue  }
+    $x  =  $x  -  1
+}
+loop  {
+    if $done  {  break  }
+    continue
+}
diff --git a/tests/fixtures/input/cell_path.nu b/tests/fixtures/input/cell_path.nu
new file mode 100644
index 0000000..5f532e6
--- /dev/null
+++ b/tests/fixtures/input/cell_path.nu
@@ -0,0 +1,6 @@
+  $record.name
+   $record.a.b.c
+  $list.0
+   $list.5
+  $data.users.0.name
+   $table.column.0
diff --git a/tests/fixtures/input/closure.nu b/tests/fixtures/input/closure.nu
new file mode 100644
index 0000000..4db61ab
--- /dev/null
+++ b/tests/fixtures/input/closure.nu
@@ -0,0 +1,8 @@
+{||  1  }
+{|x|   $x  }
+{|x|  $x  *  2  }
+{|x|   $x   *   2  }
+{|x, y|   $x   +   $y  }
+{|x: int|  $x   *  2  }
+{|x: int, y: int|   $x  +   $y  }
+{|x|  $x   *   2  }
diff --git a/tests/fixtures/input/comment.nu b/tests/fixtures/input/comment.nu
new file mode 100644
index 0000000..157fade
--- /dev/null
+++ b/tests/fixtures/input/comment.nu
@@ -0,0 +1,12 @@
+# This is a comment
+let x  =  1
+# Another comment without space
+let y  =  2
+let z  =  3 # inline comment
+# Multiple
+# consecutive
+# comments
+def foo  []  {  1  }
+def bar  []  {
+# comment inside block
+print "hello"  }
diff --git a/tests/fixtures/input/const_statement.nu b/tests/fixtures/input/const_statement.nu
new file mode 100644
index 0000000..7b8dfe7
--- /dev/null
+++ b/tests/fixtures/input/const_statement.nu
@@ -0,0 +1,5 @@
+const x  =  1
+const y   =   2
+const PI   =   3.14159
+const name  =   "hello"
+const result   =   1  +  2
diff --git a/tests/fixtures/input/datetime.nu b/tests/fixtures/input/datetime.nu
new file mode 100644
index 0000000..1f8dcf9
--- /dev/null
+++ b/tests/fixtures/input/datetime.nu
@@ -0,0 +1,8 @@
+  2024-01-15
+   2024-01-15T10:30:00
+  2024-01-15T10:30:00+05:00
+   2024-01-15T10:30:00Z
+  2024-12-31
+   2000-01-01T00:00:00
+  1970-01-01T00:00:00Z
+   2024-06-15T14:30:00-07:00
diff --git a/tests/fixtures/input/def_statement.nu b/tests/fixtures/input/def_statement.nu
new file mode 100644
index 0000000..6b3ebcb
--- /dev/null
+++ b/tests/fixtures/input/def_statement.nu
@@ -0,0 +1,14 @@
+def foo []  {  1  }
+def bar  [x]   {  $x  }
+def add  [a:  int,  b:  int]  {  $a  +  $b  }
+def greet  [name:  string]   {  $"Hello ($name)!"  }
+def with_default  [x:  int  =  10]   {  $x  *  2  }
+def with_flag   [--verbose(-v)]  {
+    if $verbose  {  print "verbose"  }
+}
+def complex  [
+    a:  int
+    b:  string
+    --flag(-f)
+    --value(-v):  int  =  5
+]  {  print $"($a) ($b) $flag $value"  }
diff --git a/tests/fixtures/input/do_block.nu b/tests/fixtures/input/do_block.nu
new file mode 100644
index 0000000..7626fdd
--- /dev/null
+++ b/tests/fixtures/input/do_block.nu
@@ -0,0 +1,14 @@
+do  {  print "hello"  }
+do   {   print "hello"   }
+do  {  $x  +  1  }
+do   {
+    ls  |  get name
+}
+do   --ignore-errors   {  risky_command  }
+do  -i   {  might_fail  }
+do   {
+    let x  =  1
+    $x  +  2
+}
+do  --env   {  $env.PATH  }
+do   {|x|  $x  *  2  }
diff --git a/tests/fixtures/input/error_make.nu b/tests/fixtures/input/error_make.nu
new file mode 100644
index 0000000..e390ce7
--- /dev/null
+++ b/tests/fixtures/input/error_make.nu
@@ -0,0 +1,22 @@
+error make  {msg:  "simple error"}
+error make   {msg:"simple error"}
+error make  {
+    msg:  "error message"
+    label:  {text:  "label text"}
+}
+error make   {
+    msg:   "error"
+    label:   {
+        text:  "here"
+        span:   $span
+    }
+}
+error make  {msg:   "test error"}
+error make   {
+    msg:  "detailed error"
+    label:   {text:  "error occurred here"}
+}
+error make  {
+    msg:   $"interpolated ($value) error"
+}
+if $invalid  {  error make  {msg:  "validation failed"}  }
diff --git a/tests/fixtures/input/export.nu b/tests/fixtures/input/export.nu
new file mode 100644
index 0000000..4d8b7a0
--- /dev/null
+++ b/tests/fixtures/input/export.nu
@@ -0,0 +1,5 @@
+export def foo  []   {  1  }
+export def bar   [x:  int]   {  $x  *  2  }
+export def add  [a:  int,  b:  int]   {  $a  +  $b  }
+export alias ll   =   ls -l
+export alias la  =   ls -a
diff --git a/tests/fixtures/input/extern.nu b/tests/fixtures/input/extern.nu
new file mode 100644
index 0000000..0f92fce
--- /dev/null
+++ b/tests/fixtures/input/extern.nu
@@ -0,0 +1,24 @@
+extern   "git"   []
+extern   "git status"   [--short(-s)]
+extern   "cargo build"   [--release --target: string]
+extern   "npm"   [
+    command: string
+    --global(-g)
+    --save-dev(-D)
+]
+extern   "docker run"   [
+    image: string
+    --detach(-d)
+    --name: string
+    --port(-p): string
+    ...args: string
+]
+extern   ls   []
+extern   cat   [file: path]
+extern   grep   [
+    pattern: string
+    ...files: path
+    -i
+    -r
+    -n
+]
diff --git a/tests/fixtures/input/external_call.nu b/tests/fixtures/input/external_call.nu
new file mode 100644
index 0000000..e8d5869
--- /dev/null
+++ b/tests/fixtures/input/external_call.nu
@@ -0,0 +1,5 @@
+  ^git status
+^echo   "hello world"
+   ^git log --oneline
+^ls  -la   /tmp
+  ^command   arg1   arg2
diff --git a/tests/fixtures/input/for_loop.nu b/tests/fixtures/input/for_loop.nu
new file mode 100644
index 0000000..23a6d0b
--- /dev/null
+++ b/tests/fixtures/input/for_loop.nu
@@ -0,0 +1,5 @@
+for x in [1,  2,  3]  {  print $x  }
+for x in   [1, 2, 3]   {   print $x   }
+for item in  $list   {  print $item  }
+for i in  1..10   {  print $i  }
+for item in   [1,  2,  3]  {  print $item  }
diff --git a/tests/fixtures/input/glob_pattern.nu b/tests/fixtures/input/glob_pattern.nu
new file mode 100644
index 0000000..ab228cb
--- /dev/null
+++ b/tests/fixtures/input/glob_pattern.nu
@@ -0,0 +1,10 @@
+  *.nu
+   **/*.rs
+  src/**/*.nu
+   test?.nu
+  [abc].txt
+   file[0-9].nu
+  path/to/*.txt
+   **/*
+  *.{nu,rs}
+   !excluded.nu
diff --git a/tests/fixtures/input/hide.nu b/tests/fixtures/input/hide.nu
new file mode 100644
index 0000000..b061b0e
--- /dev/null
+++ b/tests/fixtures/input/hide.nu
@@ -0,0 +1,7 @@
+  hide foo
+   hide foo
+  hide mymodule
+   hide mymodule bar
+  hide-env FOO
+   hide-env FOO
+  hide-env PATH
diff --git a/tests/fixtures/input/if_else.nu b/tests/fixtures/input/if_else.nu
new file mode 100644
index 0000000..ce74e9e
--- /dev/null
+++ b/tests/fixtures/input/if_else.nu
@@ -0,0 +1,9 @@
+if true  {  print "yes"  }
+if false   {   print "no"   }
+if true  {  print "yes"  }  else  {  print "no"  }
+if true   {  print "yes"   }   else   {   print "no"   }
+if $x  >  0  {  print "positive"  }  else if $x  <  0  {  print "negative"  }  else  {  print "zero"  }
+if true  {
+    print  "multiline"
+    print   "body"
+}
diff --git a/tests/fixtures/input/let_statement.nu b/tests/fixtures/input/let_statement.nu
new file mode 100644
index 0000000..8568ef0
--- /dev/null
+++ b/tests/fixtures/input/let_statement.nu
@@ -0,0 +1,5 @@
+let x  =  1
+let y   =   2
+let name   =  "hello"
+let result  =   $x  +  $y
+let long_name   =   "this is a long string"
diff --git a/tests/fixtures/input/list.nu b/tests/fixtures/input/list.nu
new file mode 100644
index 0000000..0ef0cdd
--- /dev/null
+++ b/tests/fixtures/input/list.nu
@@ -0,0 +1,12 @@
+[   ]
+[1,2,3]
+[1,  2,   3]
+[ 1 , 2 , 3 ]
+["a",   "b",  "c"]
+[1,  "two",   3.0,  true]
+[  1,2,3  ]
+[
+    [1,  2]
+    [3,   4]
+    [5,  6]
+]
diff --git a/tests/fixtures/input/loop_statement.nu b/tests/fixtures/input/loop_statement.nu
new file mode 100644
index 0000000..bfd60d1
--- /dev/null
+++ b/tests/fixtures/input/loop_statement.nu
@@ -0,0 +1,9 @@
+loop  {  break  }
+loop   {   break   }
+loop  {
+    if $x  >  10  {  break  }
+}
+loop   {
+    $x  =  $x  +  1
+    if $x   >   10  {   break   }
+}
diff --git a/tests/fixtures/input/match_expr.nu b/tests/fixtures/input/match_expr.nu
new file mode 100644
index 0000000..e4b3172
--- /dev/null
+++ b/tests/fixtures/input/match_expr.nu
@@ -0,0 +1,31 @@
+match $x {
+    0=>"zero"  =>  1=>"one"
+}
+match $x   {
+    0  =>  "zero"
+    _  =>  "other"
+}
+match $x  {
+    0  =>  "zero"
+    1   =>   "one"
+    _  =>  "other"
+}
+match $value   {
+    "a"=>"alpha"  =>  "b"=>"beta"
+}
+match $num  {
+    0  =>  "zero"
+    1..10   =>   "small"
+    _  =>  "large"
+}
+match $data   {
+    {type:  "user"}  =>  "is user"
+    {type:   "admin"}   =>   "is admin"
+    _  =>  "unknown type"
+}
+match $list  {
+    []  =>  "empty"
+    [x]   =>   $"single: ($x)"
+    [x,  y]  =>  $"pair: ($x), ($y)"
+    _  =>  "many"
+}
diff --git a/tests/fixtures/input/module.nu b/tests/fixtures/input/module.nu
new file mode 100644
index 0000000..4f827ab
--- /dev/null
+++ b/tests/fixtures/input/module.nu
@@ -0,0 +1,11 @@
+module mymod  {
+    export def foo  []   {  1  }
+}
+module math   {
+    export def add   [a,  b]   {  $a  +  $b  }
+    export def sub  [a,  b]  {  $a  -  $b  }
+}
+module utils  {
+    export def greet   [name]  {  $"Hello ($name)"  }
+    export def farewell  [name]   {  $"Goodbye ($name)"  }
+}
diff --git a/tests/fixtures/input/multiline_pipeline.nu b/tests/fixtures/input/multiline_pipeline.nu
new file mode 100644
index 0000000..42f7799
--- /dev/null
+++ b/tests/fixtures/input/multiline_pipeline.nu
@@ -0,0 +1,7 @@
+  ls | where type == "file" | get name
+   ls | get name | first
+  [1, 2, 3] | each {|x| $x * 2 } | where {|x| $x > 2 }
+   $data | group-by category | transpose key value | each {|row| {name: $row.key, count: ($row.value | length)} }
+  open file.txt | lines | length
+   ls | sort-by size | reverse | first 5
+  $table | select name age | where age > 18
diff --git a/tests/fixtures/input/mut_statement.nu b/tests/fixtures/input/mut_statement.nu
new file mode 100644
index 0000000..b00b390
--- /dev/null
+++ b/tests/fixtures/input/mut_statement.nu
@@ -0,0 +1,5 @@
+mut x  =  1
+mut y   =   2
+mut counter  =   0
+mut name   =  "hello"
+mut result  =   $x  +  $y
diff --git a/tests/fixtures/input/nested_structures.nu b/tests/fixtures/input/nested_structures.nu
new file mode 100644
index 0000000..fba3f7d
--- /dev/null
+++ b/tests/fixtures/input/nested_structures.nu
@@ -0,0 +1,87 @@
+# Nested structures ground truth
+# Nested records
+  {
+    a: {
+        b: {c: 1}
+    }
+}
+   {
+    a: {
+        b: {c: 1}
+    }
+}
+  {
+    outer: {
+        middle: {inner: "value"}
+    }
+}
+# Nested lists
+  [
+    [1, 2]
+    [3, 4]
+    [5, 6]
+]
+   [
+    [1, 2]
+    [3, 4]
+    [5, 6]
+]
+  [
+    [1, 2, 3]
+    [4, 5, 6]
+    [7, 8, 9]
+]
+# Records containing lists
+  {
+    names: ["Alice", "Bob"]
+    ages: [30, 25]
+}
+   {
+    data: [1, 2, 3]
+    labels: ["a", "b", "c"]
+}
+# Lists containing records
+  [
+    {name: "Alice"}
+    {name: "Bob"}
+]
+   [
+    {id: 1, value: "first"}
+    {id: 2, value: "second"}
+]
+# Deeply nested mixed structures
+  {
+    users: [
+        {
+            name: "Alice"
+            scores: [95, 87, 92]
+            metadata: {active: true}
+        }
+        {
+            name: "Bob"
+            scores: [88, 91, 85]
+            metadata: {active: false}
+        }
+    ]
+    config: {
+        version: "1.0"
+        settings: {debug: true, verbose: false}
+    }
+}
+# Nested closures in data
+  let transform = {|data|
+    $data | each {|item| {|x| $x * $item } }
+}
+# Nested control flow
+  if $outer {
+    if $inner {
+        if $deep { "very deep" } else { "deep" }
+    }
+}
+# Nested function definitions
+  def outer [] {
+    def inner [] { "inner result" }
+    inner
+}
+# Complex pipeline with nested structures
+  $data | each {|row| {name: $row.name, values: ($row.items | each {|i| $i * 2 })} } | where {|r| ($r.values | length) > 0 }
diff --git a/tests/fixtures/input/nothing.nu b/tests/fixtures/input/nothing.nu
new file mode 100644
index 0000000..2ea1579
--- /dev/null
+++ b/tests/fixtures/input/nothing.nu
@@ -0,0 +1,7 @@
+  null
+   null
+let x   =   null
+if $value  ==  null   {   "is null"   }
+$record.field   |   default   null
+[1,   null,   3]
+{a:   null,   b:   2}
diff --git a/tests/fixtures/input/overlay.nu b/tests/fixtures/input/overlay.nu
new file mode 100644
index 0000000..b0590fc
--- /dev/null
+++ b/tests/fixtures/input/overlay.nu
@@ -0,0 +1,11 @@
+overlay use   mymod
+overlay use  mymod
+overlay use   module.nu
+overlay use  mod   as   alias
+overlay hide   mymod
+overlay hide  mymod
+overlay hide
+overlay list
+overlay new   temp
+overlay use  mymod   --prefix
+overlay hide   mymod   --keep-env   [VAR1,  VAR2]
diff --git a/tests/fixtures/input/pipeline.nu b/tests/fixtures/input/pipeline.nu
new file mode 100644
index 0000000..1c1e407
--- /dev/null
+++ b/tests/fixtures/input/pipeline.nu
@@ -0,0 +1,6 @@
+  ls | get name
+   ls | get name
+  ls | get name | first
+   [1, 2, 3] | each {|x| $x * 2 }
+  [1, 2, 3] | each {|x| $x * 2 } | where {|x| $x > 2 }
+   $data | where size > 1kb | sort-by name
diff --git a/tests/fixtures/input/range.nu b/tests/fixtures/input/range.nu
new file mode 100644
index 0000000..8ed1a15
--- /dev/null
+++ b/tests/fixtures/input/range.nu
@@ -0,0 +1,6 @@
+  1..10
+   1..100
+  0..-5
+   1..2..10
+  0..
+   ..10
diff --git a/tests/fixtures/input/record.nu b/tests/fixtures/input/record.nu
new file mode 100644
index 0000000..f26aeef
--- /dev/null
+++ b/tests/fixtures/input/record.nu
@@ -0,0 +1,13 @@
+{   }
+{a:  1}
+{a:1,  b:2}
+{a:  1,   b:  2}
+{a:   1,  b:   2}
+{name:   "Alice",  age:  30}
+{name:  "Alice",   age:   30,  city:  "NYC"}
+{
+    a:   {
+        b:  {c:   1}
+    }
+}
+{...$base,   extra:  true}
diff --git a/tests/fixtures/input/return_statement.nu b/tests/fixtures/input/return_statement.nu
new file mode 100644
index 0000000..b5d94d3
--- /dev/null
+++ b/tests/fixtures/input/return_statement.nu
@@ -0,0 +1,17 @@
+def returns_nothing  []   {  return  }
+def returns_one  []  {  return  1  }
+def returns_42   []   {   return   42   }
+def returns_var   [x]  {  return  $x  }
+def returns_expr  [x,  y]   {  return  ($x  +  $y)  }
+def returns_string  []  {  return   "hello"  }
+def returns_list   []   {  return  [1,  2,  3]  }
+def returns_record  []  {  return  {a:  1,  b:  2}  }
+def foo  []   {  return  1  }
+def bar   [x]  {
+    if $x  >  0  {  return  "positive"  }
+    return   "not positive"
+}
+def early  [x]   {
+    if $x  ==  null   {  return  }
+    $x
+}
diff --git a/tests/fixtures/input/source.nu b/tests/fixtures/input/source.nu
new file mode 100644
index 0000000..f952b5a
--- /dev/null
+++ b/tests/fixtures/input/source.nu
@@ -0,0 +1,10 @@
+  source script.nu
+   source   script.nu
+  source ./path/to/file.nu
+   source ~/scripts/utils.nu
+  source ../other/script.nu
+   source "path with spaces/script.nu"
+  source $script_path
+   source-env config.nu
+  source-env   config.nu
+   source-env ./env_setup.nu
diff --git a/tests/fixtures/input/spread.nu b/tests/fixtures/input/spread.nu
new file mode 100644
index 0000000..d87944e
--- /dev/null
+++ b/tests/fixtures/input/spread.nu
@@ -0,0 +1,9 @@
+[  ...$list  ]
+[1,   ...$rest]
+[...$first,    ...$second]
+{   ...$record   }
+{...$base,   extra:  true}
+{a:  1,   ...$rest,  b:  2}
+command   ...$args
+[0,   ...$middle,  10]
+{...$defaults,    ...$overrides}
diff --git a/tests/fixtures/input/string_interpolation.nu b/tests/fixtures/input/string_interpolation.nu
new file mode 100644
index 0000000..1339550
--- /dev/null
+++ b/tests/fixtures/input/string_interpolation.nu
@@ -0,0 +1,5 @@
+  $"hello"
+$"Hello ($name)"
+   $"Result: ($x + $y)"
+$"Multi ($a) values ($b) here ($c)"
+  $"   spaces   ($x)   preserved   "
diff --git a/tests/fixtures/input/subexpression.nu b/tests/fixtures/input/subexpression.nu
new file mode 100644
index 0000000..27a6625
--- /dev/null
+++ b/tests/fixtures/input/subexpression.nu
@@ -0,0 +1,11 @@
+(1  +  2)
+( 1  +  2 )
+(1   +   2)
+($x  +  $y)
+(  ls  )
+(ls   |   get name)
+( ls  |  get name )
+let result  =  (1  +  2)  *  3
+let value  =  ($x  +  (($y  *  2)))
+print  (echo "hello")
+if  (true)   {  print "yes"  }
diff --git a/tests/fixtures/input/table.nu b/tests/fixtures/input/table.nu
new file mode 100644
index 0000000..822b7d4
--- /dev/null
+++ b/tests/fixtures/input/table.nu
@@ -0,0 +1,10 @@
+[[a,  b];  [1,  2],  [3,  4]]
+[[a,   b];   [1,   2],   [3,   4]]
+[[name,  age];  ["Alice",  30],   ["Bob",  25]]
+[[col1,  col2,   col3];  [1,   2,  3],   [4,  5,   6],  [7,   8,  9]]
+[[a];   [1]]
+[
+    [header1,   header2]
+    [val1,  val2]
+    [val3,   val4]
+]
diff --git a/tests/fixtures/input/try_catch.nu b/tests/fixtures/input/try_catch.nu
new file mode 100644
index 0000000..2e83156
--- /dev/null
+++ b/tests/fixtures/input/try_catch.nu
@@ -0,0 +1,6 @@
+try  {  error make  {msg:  "test"}  }
+try   {   error make   {msg:   "test"}   }
+try  {  error make  {msg:  "test"}  }  catch  {  print "caught"  }
+try   {  1  /  0  }   catch   {  print "error"  }
+try  {  risky_operation  }  catch   {  print "error occurred"  }
+try   {  risky  }  catch  {  print $err.msg  }
diff --git a/tests/fixtures/input/use_statement.nu b/tests/fixtures/input/use_statement.nu
new file mode 100644
index 0000000..ba26a53
--- /dev/null
+++ b/tests/fixtures/input/use_statement.nu
@@ -0,0 +1,8 @@
+use   std
+use  std
+use   std   *
+use  std   assert
+use   std   [assert,  log]
+use  module.nu
+use   module.nu   foo
+use  module.nu   [foo,   bar]
diff --git a/tests/fixtures/input/value_with_unit.nu b/tests/fixtures/input/value_with_unit.nu
new file mode 100644
index 0000000..3909e06
--- /dev/null
+++ b/tests/fixtures/input/value_with_unit.nu
@@ -0,0 +1,15 @@
+  1kb
+5mb
+  10gb
+100ms
+ 5sec
+  30min
+2hr
+ 1day
+  7wk
+1024b
+  500ns
+ 100us
+  10kb
+5mb  +  10mb
+1hr  +  30min
diff --git a/tests/fixtures/input/where_clause.nu b/tests/fixtures/input/where_clause.nu
new file mode 100644
index 0000000..064d740
--- /dev/null
+++ b/tests/fixtures/input/where_clause.nu
@@ -0,0 +1,10 @@
+  ls | where size > 1kb
+   ls | where name == "test"
+  ls | where type == "file"
+   $data | where size > 1kb
+  $list | where name == "test"
+   $table | where $it.value > 10
+  $records | where status == "active" and age > 18
+   $items | where {|row| $row.count > 0 }
+  ls | where size > 1mb | where name =~ "\.rs$"
+   $data | where { $in.field | is-not-empty }
diff --git a/tests/fixtures/input/while_loop.nu b/tests/fixtures/input/while_loop.nu
new file mode 100644
index 0000000..963b14d
--- /dev/null
+++ b/tests/fixtures/input/while_loop.nu
@@ -0,0 +1,7 @@
+while true  {  break  }
+while $x  >  0   {  $x  =  $x  -  1  }
+while $condition   {  print "looping"  }
+while $counter  <  10   {
+    $counter  =  $counter  +  1
+    print   $counter
+}
diff --git a/tests/ground_truth.rs b/tests/ground_truth.rs
new file mode 100644
index 0000000..813be50
--- /dev/null
+++ b/tests/ground_truth.rs
@@ -0,0 +1,650 @@
+//! Ground truth tests for nufmt
+//!
+//! These tests compare formatter output against expected ground truth files.
+//! Each construct has a separate input and expected file for easy editing.
+
+use std::fs;
+use std::path::PathBuf;
+use std::process::Command;
+
+const TEST_BINARY: &str = "target/debug/nufmt";
+
+/// Helper to run the formatter on input and compare with expected output
+fn run_ground_truth_test(name: &str) {
+    let input_path = PathBuf::from(format!("tests/fixtures/input/{}.nu", name));
+    let expected_path = PathBuf::from(format!("tests/fixtures/expected/{}.nu", name));
+
+    // Ensure files exist
+    assert!(
+        input_path.exists(),
+        "Input file not found: {:?}",
+        input_path
+    );
+    assert!(
+        expected_path.exists(),
+        "Expected file not found: {:?}",
+        expected_path
+    );
+
+    // Read input
+    let input = fs::read_to_string(&input_path).expect("Failed to read input file");
+
+    // Run formatter via stdin
+    let output = Command::new(TEST_BINARY)
+        .arg("--stdin")
+        .stdin(std::process::Stdio::piped())
+        .stdout(std::process::Stdio::piped())
+        .stderr(std::process::Stdio::piped())
+        .spawn()
+        .expect("Failed to spawn nufmt");
+
+    use std::io::Write;
+    output
+        .stdin
+        .as_ref()
+        .unwrap()
+        .write_all(input.as_bytes())
+        .expect("Failed to write to stdin");
+
+    let output = output.wait_with_output().expect("Failed to wait for nufmt");
+
+    // Check for errors
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        panic!(
+            "Formatter failed for {}: exit code {:?}\nstderr: {}",
+            name,
+            output.status.code(),
+            stderr
+        );
+    }
+
+    // Get formatted output
+    let formatted = String::from_utf8(output.stdout).expect("Invalid UTF-8 in output");
+
+    // Read expected output
+    let expected = fs::read_to_string(&expected_path).expect("Failed to read expected file");
+
+    // Compare (normalize line endings)
+    let formatted_normalized = formatted.trim().replace("\r\n", "\n");
+    let expected_normalized = expected.trim().replace("\r\n", "\n");
+
+    if formatted_normalized != expected_normalized {
+        // Print detailed diff
+        eprintln!("=== Ground truth test failed for: {} ===", name);
+        eprintln!("\n--- Expected ---");
+        eprintln!("{}", expected_normalized);
+        eprintln!("\n--- Got ---");
+        eprintln!("{}", formatted_normalized);
+        eprintln!("\n--- Diff ---");
+
+        // Line by line diff
+        let expected_lines: Vec<&str> = expected_normalized.lines().collect();
+        let formatted_lines: Vec<&str> = formatted_normalized.lines().collect();
+
+        let max_lines = expected_lines.len().max(formatted_lines.len());
+        for i in 0..max_lines {
+            let exp = expected_lines.get(i).unwrap_or(&"<missing>");
+            let got = formatted_lines.get(i).unwrap_or(&"<missing>");
+            if exp != got {
+                eprintln!("Line {}: ", i + 1);
+                eprintln!("  expected: {:?}", exp);
+                eprintln!("  got:      {:?}", got);
+            }
+        }
+
+        panic!("Ground truth mismatch for {}. See diff above.", name);
+    }
+}
+
+/// Test that formatting is idempotent (formatting twice gives same result)
+fn run_idempotency_test(name: &str) {
+    let input_path = PathBuf::from(format!("tests/fixtures/input/{}.nu", name));
+
+    if !input_path.exists() {
+        return; // Skip if input doesn't exist
+    }
+
+    let input = fs::read_to_string(&input_path).expect("Failed to read input file");
+
+    // First format
+    let first_output = format_via_stdin(&input);
+    if first_output.is_err() {
+        return; // Skip if formatting fails
+    }
+    let first = first_output.unwrap();
+
+    // Second format
+    let second_output = format_via_stdin(&first);
+    if second_output.is_err() {
+        panic!("Second format failed for {}, but first succeeded", name);
+    }
+    let second = second_output.unwrap();
+
+    if first != second {
+        eprintln!("=== Idempotency test failed for: {} ===", name);
+        eprintln!("\n--- First format ---");
+        eprintln!("{}", first);
+        eprintln!("\n--- Second format ---");
+        eprintln!("{}", second);
+        panic!("Formatting is not idempotent for {}", name);
+    }
+}
+
+fn format_via_stdin(input: &str) -> Result<String, String> {
+    let output = Command::new(TEST_BINARY)
+        .arg("--stdin")
+        .stdin(std::process::Stdio::piped())
+        .stdout(std::process::Stdio::piped())
+        .stderr(std::process::Stdio::piped())
+        .spawn()
+        .expect("Failed to spawn nufmt");
+
+    use std::io::Write;
+    output
+        .stdin
+        .as_ref()
+        .unwrap()
+        .write_all(input.as_bytes())
+        .expect("Failed to write to stdin");
+
+    let output = output.wait_with_output().expect("Failed to wait for nufmt");
+
+    if output.status.success() {
+        Ok(String::from_utf8(output.stdout).expect("Invalid UTF-8"))
+    } else {
+        Err(String::from_utf8_lossy(&output.stderr).to_string())
+    }
+}
+
+// ============================================================================
+// Ground Truth Tests - Core Language Constructs
+// ============================================================================
+
+#[test]
+fn ground_truth_let_statement() {
+    run_ground_truth_test("let_statement");
+}
+
+#[test]
+fn ground_truth_mut_statement() {
+    run_ground_truth_test("mut_statement");
+}
+
+#[test]
+fn ground_truth_const_statement() {
+    run_ground_truth_test("const_statement");
+}
+
+#[test]
+fn ground_truth_def_statement() {
+    run_ground_truth_test("def_statement");
+}
+
+// ============================================================================
+// Ground Truth Tests - Control Flow
+// ============================================================================
+
+#[test]
+fn ground_truth_if_else() {
+    run_ground_truth_test("if_else");
+}
+
+#[test]
+fn ground_truth_for_loop() {
+    run_ground_truth_test("for_loop");
+}
+
+#[test]
+fn ground_truth_while_loop() {
+    run_ground_truth_test("while_loop");
+}
+
+#[test]
+fn ground_truth_loop_statement() {
+    run_ground_truth_test("loop_statement");
+}
+
+#[test]
+fn ground_truth_match_expr() {
+    run_ground_truth_test("match_expr");
+}
+
+#[test]
+fn ground_truth_try_catch() {
+    run_ground_truth_test("try_catch");
+}
+
+#[test]
+fn ground_truth_break_continue() {
+    run_ground_truth_test("break_continue");
+}
+
+#[test]
+fn ground_truth_return_statement() {
+    run_ground_truth_test("return_statement");
+}
+
+// ============================================================================
+// Ground Truth Tests - Data Structures
+// ============================================================================
+
+#[test]
+fn ground_truth_list() {
+    run_ground_truth_test("list");
+}
+
+#[test]
+fn ground_truth_record() {
+    run_ground_truth_test("record");
+}
+
+#[test]
+fn ground_truth_table() {
+    run_ground_truth_test("table");
+}
+
+#[test]
+fn ground_truth_nested_structures() {
+    run_ground_truth_test("nested_structures");
+}
+
+// ============================================================================
+// Ground Truth Tests - Pipelines and Expressions
+// ============================================================================
+
+#[test]
+fn ground_truth_pipeline() {
+    run_ground_truth_test("pipeline");
+}
+
+#[test]
+fn ground_truth_multiline_pipeline() {
+    run_ground_truth_test("multiline_pipeline");
+}
+
+#[test]
+fn ground_truth_closure() {
+    run_ground_truth_test("closure");
+}
+
+#[test]
+fn ground_truth_subexpression() {
+    run_ground_truth_test("subexpression");
+}
+
+#[test]
+fn ground_truth_binary_ops() {
+    run_ground_truth_test("binary_ops");
+}
+
+#[test]
+fn ground_truth_range() {
+    run_ground_truth_test("range");
+}
+
+#[test]
+fn ground_truth_cell_path() {
+    run_ground_truth_test("cell_path");
+}
+
+#[test]
+fn ground_truth_spread() {
+    run_ground_truth_test("spread");
+}
+
+// ============================================================================
+// Ground Truth Tests - Strings and Interpolation
+// ============================================================================
+
+#[test]
+fn ground_truth_string_interpolation() {
+    run_ground_truth_test("string_interpolation");
+}
+
+#[test]
+fn ground_truth_comment() {
+    run_ground_truth_test("comment");
+}
+
+// ============================================================================
+// Ground Truth Tests - Types and Values
+// ============================================================================
+
+#[test]
+fn ground_truth_value_with_unit() {
+    run_ground_truth_test("value_with_unit");
+}
+
+#[test]
+fn ground_truth_datetime() {
+    run_ground_truth_test("datetime");
+}
+
+#[test]
+fn ground_truth_nothing() {
+    run_ground_truth_test("nothing");
+}
+
+#[test]
+fn ground_truth_glob_pattern() {
+    run_ground_truth_test("glob_pattern");
+}
+
+// ============================================================================
+// Ground Truth Tests - Modules and Imports
+// ============================================================================
+
+#[test]
+fn ground_truth_module() {
+    run_ground_truth_test("module");
+}
+
+#[test]
+fn ground_truth_use_statement() {
+    run_ground_truth_test("use_statement");
+}
+
+#[test]
+fn ground_truth_export() {
+    run_ground_truth_test("export");
+}
+
+#[test]
+fn ground_truth_source() {
+    run_ground_truth_test("source");
+}
+
+#[test]
+fn ground_truth_hide() {
+    run_ground_truth_test("hide");
+}
+
+#[test]
+fn ground_truth_overlay() {
+    run_ground_truth_test("overlay");
+}
+
+// ============================================================================
+// Ground Truth Tests - Commands and Definitions
+// ============================================================================
+
+#[test]
+fn ground_truth_alias() {
+    run_ground_truth_test("alias");
+}
+
+#[test]
+fn ground_truth_extern() {
+    run_ground_truth_test("extern");
+}
+
+#[test]
+fn ground_truth_external_call() {
+    run_ground_truth_test("external_call");
+}
+
+// ============================================================================
+// Ground Truth Tests - Special Constructs
+// ============================================================================
+
+#[test]
+fn ground_truth_do_block() {
+    run_ground_truth_test("do_block");
+}
+
+#[test]
+fn ground_truth_where_clause() {
+    run_ground_truth_test("where_clause");
+}
+
+#[test]
+fn ground_truth_error_make() {
+    run_ground_truth_test("error_make");
+}
+
+// ============================================================================
+// Idempotency Tests - Core Language Constructs
+// ============================================================================
+
+#[test]
+fn idempotency_let_statement() {
+    run_idempotency_test("let_statement");
+}
+
+#[test]
+fn idempotency_mut_statement() {
+    run_idempotency_test("mut_statement");
+}
+
+#[test]
+fn idempotency_const_statement() {
+    run_idempotency_test("const_statement");
+}
+
+#[test]
+fn idempotency_def_statement() {
+    run_idempotency_test("def_statement");
+}
+
+// ============================================================================
+// Idempotency Tests - Control Flow
+// ============================================================================
+
+#[test]
+fn idempotency_if_else() {
+    run_idempotency_test("if_else");
+}
+
+#[test]
+fn idempotency_for_loop() {
+    run_idempotency_test("for_loop");
+}
+
+#[test]
+fn idempotency_while_loop() {
+    run_idempotency_test("while_loop");
+}
+
+#[test]
+fn idempotency_loop_statement() {
+    run_idempotency_test("loop_statement");
+}
+
+#[test]
+fn idempotency_match_expr() {
+    run_idempotency_test("match_expr");
+}
+
+#[test]
+fn idempotency_try_catch() {
+    run_idempotency_test("try_catch");
+}
+
+#[test]
+fn idempotency_break_continue() {
+    run_idempotency_test("break_continue");
+}
+
+#[test]
+fn idempotency_return_statement() {
+    run_idempotency_test("return_statement");
+}
+
+// ============================================================================
+// Idempotency Tests - Data Structures
+// ============================================================================
+
+#[test]
+fn idempotency_list() {
+    run_idempotency_test("list");
+}
+
+#[test]
+fn idempotency_record() {
+    run_idempotency_test("record");
+}
+
+#[test]
+fn idempotency_table() {
+    run_idempotency_test("table");
+}
+
+#[test]
+fn idempotency_nested_structures() {
+    run_idempotency_test("nested_structures");
+}
+
+// ============================================================================
+// Idempotency Tests - Pipelines and Expressions
+// ============================================================================
+
+#[test]
+fn idempotency_pipeline() {
+    run_idempotency_test("pipeline");
+}
+
+#[test]
+fn idempotency_multiline_pipeline() {
+    run_idempotency_test("multiline_pipeline");
+}
+
+#[test]
+fn idempotency_closure() {
+    run_idempotency_test("closure");
+}
+
+#[test]
+fn idempotency_subexpression() {
+    run_idempotency_test("subexpression");
+}
+
+#[test]
+fn idempotency_binary_ops() {
+    run_idempotency_test("binary_ops");
+}
+
+#[test]
+fn idempotency_range() {
+    run_idempotency_test("range");
+}
+
+#[test]
+fn idempotency_cell_path() {
+    run_idempotency_test("cell_path");
+}
+
+#[test]
+fn idempotency_spread() {
+    run_idempotency_test("spread");
+}
+
+// ============================================================================
+// Idempotency Tests - Strings and Interpolation
+// ============================================================================
+
+#[test]
+fn idempotency_string_interpolation() {
+    run_idempotency_test("string_interpolation");
+}
+
+#[test]
+fn idempotency_comment() {
+    run_idempotency_test("comment");
+}
+
+// ============================================================================
+// Idempotency Tests - Types and Values
+// ============================================================================
+
+#[test]
+fn idempotency_value_with_unit() {
+    run_idempotency_test("value_with_unit");
+}
+
+#[test]
+fn idempotency_datetime() {
+    run_idempotency_test("datetime");
+}
+
+#[test]
+fn idempotency_nothing() {
+    run_idempotency_test("nothing");
+}
+
+#[test]
+fn idempotency_glob_pattern() {
+    run_idempotency_test("glob_pattern");
+}
+
+// ============================================================================
+// Idempotency Tests - Modules and Imports
+// ============================================================================
+
+#[test]
+fn idempotency_module() {
+    run_idempotency_test("module");
+}
+
+#[test]
+fn idempotency_use_statement() {
+    run_idempotency_test("use_statement");
+}
+
+#[test]
+fn idempotency_export() {
+    run_idempotency_test("export");
+}
+
+#[test]
+fn idempotency_source() {
+    run_idempotency_test("source");
+}
+
+#[test]
+fn idempotency_hide() {
+    run_idempotency_test("hide");
+}
+
+#[test]
+fn idempotency_overlay() {
+    run_idempotency_test("overlay");
+}
+
+// ============================================================================
+// Idempotency Tests - Commands and Definitions
+// ============================================================================
+
+#[test]
+fn idempotency_alias() {
+    run_idempotency_test("alias");
+}
+
+#[test]
+fn idempotency_extern() {
+    run_idempotency_test("extern");
+}
+
+#[test]
+fn idempotency_external_call() {
+    run_idempotency_test("external_call");
+}
+
+// ============================================================================
+// Idempotency Tests - Special Constructs
+// ============================================================================
+
+#[test]
+fn idempotency_do_block() {
+    run_idempotency_test("do_block");
+}
+
+#[test]
+fn idempotency_where_clause() {
+    run_idempotency_test("where_clause");
+}
+
+#[test]
+fn idempotency_error_make() {
+    run_idempotency_test("error_make");
+}
diff --git a/tests/main.rs b/tests/main.rs
index 569f791..347530d 100644
--- a/tests/main.rs
+++ b/tests/main.rs
@@ -1,4 +1,4 @@
-use std::{fs, process::Command};
+use std::{fs, path::PathBuf, process::Command};
 use tempfile::tempdir;
 
 const INVALID: &str = "# beginning of script comment
@@ -137,3 +137,158 @@ fn files_are_checked() {
     assert_eq!(file_a_content.as_str(), INVALID);
     assert_eq!(file_b_content.as_str(), INVALID);
 }
+
+#[test]
+fn format_let_statement() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "let   x   =   1").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert_eq!(content.trim(), "let x = 1");
+}
+
+#[test]
+fn format_def_statement() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "def foo [x: int] { $x + 1 }").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert!(content.contains("def foo"));
+    assert!(content.contains("$x + 1"));
+}
+
+#[test]
+fn format_if_else() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "if true { echo yes } else { echo no }").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert!(content.contains("if true"));
+    assert!(content.contains("else"));
+}
+
+#[test]
+fn format_pipeline() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "ls|get name").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert!(content.contains(" | "));
+}
+
+#[test]
+fn format_preserves_comments() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "# comment\nlet x = 1").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert!(content.contains("# comment"));
+    assert!(content.contains("let x = 1"));
+}
+
+#[test]
+fn format_is_idempotent() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "let x = 1\nlet y = 2").unwrap();
+
+    // First format
+    Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+    let first = fs::read_to_string(&file).unwrap();
+
+    // Second format
+    Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+    let second = fs::read_to_string(&file).unwrap();
+
+    assert_eq!(first, second, "Formatting should be idempotent");
+}
+
+#[test]
+fn format_for_loop() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "for x in [1, 2, 3] { print $x }").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert!(content.contains("for x in"));
+    assert!(content.contains("{ print"));
+}
+
+#[test]
+fn format_closure() {
+    let dir = tempdir().unwrap();
+    let file = dir.path().join("test.nu");
+    fs::write(&file, "{|x| $x * 2 }").unwrap();
+
+    let output = Command::new(TEST_BINARY)
+        .arg(file.to_str().unwrap())
+        .output()
+        .unwrap();
+
+    assert_eq!(output.status.code(), Some(0));
+    let content = fs::read_to_string(&file).unwrap();
+    assert!(content.contains("{|x|"));
+}
+
+#[test]
+fn format_fixtures_basic() {
+    // Test that the basic fixture can be formatted without errors
+    let fixture_path = PathBuf::from("tests/fixtures/basic.nu");
+    if fixture_path.exists() {
+        let output = Command::new(TEST_BINARY)
+            .arg("--dry-run")
+            .arg(fixture_path.to_str().unwrap())
+            .output()
+            .unwrap();
+
+        // Should either succeed or report would-reformat
+        assert!(output.status.code() == Some(0) || output.status.code() == Some(1));
+    }
+}
diff --git a/tests/run_ground_truth_tests.nu b/tests/run_ground_truth_tests.nu
new file mode 100755
index 0000000..12a323d
--- /dev/null
+++ b/tests/run_ground_truth_tests.nu
@@ -0,0 +1,356 @@
+#!/usr/bin/env nu
+# Ground truth test runner for nufmt
+# Run with: nu tests/run_ground_truth_tests.nu
+
+# Configuration
+const NUFMT_BINARY = "./target/release/nufmt"
+const INPUT_DIR = "tests/fixtures/input"
+const EXPECTED_DIR = "tests/fixtures/expected"
+
+# All test constructs organized by category
+const TEST_CONSTRUCTS = {
+    core: ["let_statement", "mut_statement", "const_statement", "def_statement"]
+    control_flow: [
+        "if_else"
+        "for_loop"
+        "while_loop"
+        "loop_statement"
+        "match_expr"
+        "try_catch"
+        "break_continue"
+        "return_statement"
+    ]
+    data_structures: ["list", "record", "table", "nested_structures"]
+    pipelines_expressions: [
+        "pipeline"
+        "multiline_pipeline"
+        "closure"
+        "subexpression"
+        "binary_ops"
+        "range"
+        "cell_path"
+        "spread"
+    ]
+    strings_interpolation: ["string_interpolation", "comment"]
+    types_values: ["value_with_unit", "datetime", "nothing", "glob_pattern"]
+    modules_imports: [
+        "module"
+        "use_statement"
+        "export"
+        "source"
+        "hide"
+        "overlay"
+    ]
+    commands_definitions: ["alias", "extern", "external_call"]
+    special_constructs: ["do_block", "where_clause", "error_make"]
+}
+
+# Colors for output
+def green [text: string] { $"(ansi green)($text)(ansi reset)" }
+def red [text: string] { $"(ansi red)($text)(ansi reset)" }
+def yellow [text: string] { $"(ansi yellow)($text)(ansi reset)" }
+def cyan [text: string] { $"(ansi cyan)($text)(ansi reset)" }
+def bold [text: string] { $"(ansi white_bold)($text)(ansi reset)" }
+
+# Test result record
+def make_result [name: string, passed: bool, message: string = ""] {
+    {name: $name, passed: $passed, message: $message}
+}
+
+# Run a single ground truth test
+def run_test [name: string] {
+    let input_file = $"($INPUT_DIR)/($name).nu"
+    let expected_file = $"($EXPECTED_DIR)/($name).nu"
+
+    # Check if files exist
+    if not ($input_file | path exists) {
+        return (make_result $name false $"Input file not found: ($input_file)")
+    }
+    if not ($expected_file | path exists) {
+        return (make_result $name false $"Expected file not found: ($expected_file)")
+    }
+
+    # Read input
+    let input = open $input_file
+
+    # Run formatter
+    let result = try {
+        $input | ^$NUFMT_BINARY --stdin
+    } catch {
+        return (make_result $name false $"Formatter error")
+    }
+
+    # Read expected output
+    let expected = open $expected_file
+
+    # Compare (normalize line endings and trim)
+    let formatted_normalized = $result | str trim
+    let expected_normalized = $expected | str trim
+
+    if $formatted_normalized == $expected_normalized {
+        make_result $name true
+    } else {
+        let diff_msg = $"Output differs from expected.\n--- Expected ---\n($expected_normalized)\n--- Got ---\n($formatted_normalized)"
+        make_result $name false $diff_msg
+    }
+}
+
+# Run idempotency test
+def run_idempotency_test [name: string] {
+    let input_file = $"($INPUT_DIR)/($name).nu"
+
+    if not ($input_file | path exists) {
+        return (make_result $"($name)_idempotency" false $"Input file not found")
+    }
+
+    let input = open $input_file
+
+    # First format
+    let first = try {
+        $input | ^$NUFMT_BINARY --stdin
+    } catch {
+        return (make_result $"($name)_idempotency" false "First format failed")
+    }
+
+    # Second format
+    let second = try {
+        $first | ^$NUFMT_BINARY --stdin
+    } catch {
+        return (make_result $"($name)_idempotency" false "Second format failed")
+    }
+
+    if ($first | str trim) == ($second | str trim) {
+        make_result $"($name)_idempotency" true
+    } else {
+        make_result $"($name)_idempotency" false "Output changed on second format"
+    }
+}
+
+# Get all test names from input directory
+def get_test_names [] {
+    ls $INPUT_DIR
+    | where name =~ '\.nu$'
+    | get name
+    | each {|f| $f | path basename | str replace '.nu' ''}
+}
+
+# Get all test names from the constructs definition
+def get_all_defined_tests [] {
+    $TEST_CONSTRUCTS | values | flatten
+}
+
+# Get tests by category
+def get_tests_by_category [category: string] {
+    if ($category in $TEST_CONSTRUCTS) {
+        $TEST_CONSTRUCTS | get $category
+    } else {
+        []
+    }
+}
+
+# Print a section header
+def print_section [title: string] {
+    print ""
+    print (bold $"── ($title) ──")
+}
+
+# Main test runner
+def main [
+    --test(-t): string       # Run specific test by name
+    --category(-c): string   # Run tests in a specific category
+    --idempotency(-i)        # Only run idempotency tests
+    --ground-truth(-g)       # Only run ground truth tests
+    --verbose(-v)            # Show detailed output for failures
+    --list(-l)               # List available tests
+    --list-categories        # List available categories
+    --check-files            # Check which test files exist
+] {
+    print (bold "=== nufmt Ground Truth Test Runner ===")
+    print ""
+
+    # Check if binary exists
+    if not ($NUFMT_BINARY | path exists) {
+        print (red $"Error: nufmt binary not found at ($NUFMT_BINARY)")
+        print "Run 'cargo build --release' first"
+        exit 1
+    }
+
+    # List categories
+    if $list_categories {
+        print "Available test categories:"
+        for category in ($TEST_CONSTRUCTS | columns) {
+            let count = ($TEST_CONSTRUCTS | get $category | length)
+            print $"  - (cyan $category) \(($count) tests\)"
+        }
+        return
+    }
+
+    # List tests
+    if $list {
+        print "Available tests by category:"
+        for category in ($TEST_CONSTRUCTS | columns) {
+            print_section $category
+            for name in ($TEST_CONSTRUCTS | get $category) {
+                let input_exists = ($"($INPUT_DIR)/($name).nu" | path exists)
+                let expected_exists = ($"($EXPECTED_DIR)/($name).nu" | path exists)
+                let status = if $input_exists and $expected_exists {
+                    green "✓"
+                } else if $input_exists {
+                    yellow "○"  # missing expected
+                } else {
+                    red "✗"  # missing input
+                }
+                print $"  ($status) ($name)"
+            }
+        }
+        return
+    }
+
+    # Check files
+    if $check_files {
+        print "Checking test file status..."
+        print ""
+
+        let defined_tests = get_all_defined_tests
+        let existing_inputs = get_test_names
+
+        mut missing_inputs = []
+        mut missing_expected = []
+        mut undefined_tests = []
+
+        for test in $defined_tests {
+            if not ($"($INPUT_DIR)/($test).nu" | path exists) {
+                $missing_inputs = ($missing_inputs | append $test)
+            }
+            if not ($"($EXPECTED_DIR)/($test).nu" | path exists) {
+                $missing_expected = ($missing_expected | append $test)
+            }
+        }
+
+        for test in $existing_inputs {
+            if not ($test in $defined_tests) {
+                $undefined_tests = ($undefined_tests | append $test)
+            }
+        }
+
+        if ($missing_inputs | length) > 0 {
+            print (red "Missing input files:")
+            for t in $missing_inputs { print $"  - ($t)" }
+        }
+
+        if ($missing_expected | length) > 0 {
+            print (yellow "Missing expected files:")
+            for t in $missing_expected { print $"  - ($t)" }
+        }
+
+        if ($undefined_tests | length) > 0 {
+            print (cyan "Tests not in category definition:")
+            for t in $undefined_tests { print $"  - ($t)" }
+        }
+
+        if ($missing_inputs | length) == 0 and ($missing_expected | length) == 0 {
+            print (green "All defined tests have both input and expected files!")
+        }
+        return
+    }
+
+    # Determine which tests to run
+    let tests_to_run = if $test != null {
+        [$test]
+    } else if $category != null {
+        get_tests_by_category $category
+    } else {
+        get_all_defined_tests
+    }
+
+    if ($tests_to_run | is-empty) {
+        print (red "No tests found to run")
+        if $category != null {
+            print $"Unknown category: ($category)"
+            print "Use --list-categories to see available categories"
+        }
+        exit 1
+    }
+
+    mut results = []
+
+    # Run ground truth tests
+    if not $idempotency {
+        print (bold "Running ground truth tests...")
+        for name in $tests_to_run {
+            # Check if files exist before running
+            let input_exists = ($"($INPUT_DIR)/($name).nu" | path exists)
+            let expected_exists = ($"($EXPECTED_DIR)/($name).nu" | path exists)
+
+            if not $input_exists or not $expected_exists {
+                let result = make_result $name false "Missing test files"
+                $results = ($results | append $result)
+                print $"  (yellow '○') ($name) - missing files"
+                continue
+            }
+
+            let result = run_test $name
+            $results = ($results | append $result)
+
+            if $result.passed {
+                print $"  (green '✓') ($name)"
+            } else {
+                print $"  (red '✗') ($name)"
+                if $verbose {
+                    print $"    ($result.message)"
+                }
+            }
+        }
+        print ""
+    }
+
+    # Run idempotency tests
+    if not $ground_truth {
+        print (bold "Running idempotency tests...")
+        for name in $tests_to_run {
+            # Check if input file exists
+            if not ($"($INPUT_DIR)/($name).nu" | path exists) {
+                # Skip silently for idempotency if no input
+                continue
+            }
+
+            let result = run_idempotency_test $name
+            $results = ($results | append $result)
+
+            if $result.passed {
+                print $"  (green '✓') ($result.name)"
+            } else {
+                print $"  (red '✗') ($result.name)"
+                if $verbose {
+                    print $"    ($result.message)"
+                }
+            }
+        }
+        print ""
+    }
+
+    # Summary
+    let passed = $results | where passed | length
+    let failed = $results | where {|r| not $r.passed} | length
+    let total = $results | length
+
+    print (bold "=== Summary ===")
+    print $"Total: ($total)"
+    print $"Passed: (green ($passed | into string))"
+    print $"Failed: (if $failed > 0 { red ($failed | into string) } else { $failed | into string })"
+
+    if $failed > 0 {
+        print ""
+        print (bold "Failed tests:")
+        for result in ($results | where {|r| not $r.passed}) {
+            print $"  - ($result.name)"
+            if $verbose and ($result.message | str length) > 0 {
+                print $"      ($result.message | str substring 0..200)..."
+            }
+        }
+        exit 1
+    }
+
+    print ""
+    print (green "All tests passed!")
+}
diff --git a/toolkit.nu b/toolkit.nu
index 4b7c519..aef595e 100644
--- a/toolkit.nu
+++ b/toolkit.nu
@@ -5,73 +5,32 @@
 # developer during a PR cycle, namely to (**1**) format the source base,
 # (**2**) catch classical flaws in the new changes with *clippy* and (**3**)
 # make sure all the tests pass.
-
 # print the pipe input inside backticks, dimmed and italic, as a pretty command
-def pretty-print-command [] {
-    $"`(ansi default_dimmed)(ansi default_italic)($in)(ansi reset)`"
-}
-
+def pretty-print-command [] { ($"`(ansi default_dimmed)(ansi default_italic)($in)(ansi reset)`") }
 # check standard code formatting and apply the changes
-export def fmt [
-    --check  # do not apply the format changes, only check the syntax
-    --verbose # print extra information about the command's progress
-] {
-    if $verbose {
-        print $"running ('toolkit fmt' | pretty-print-command)"
-    }
-
+export def fmt [--check, --verbose] {
+    # do not apply the format changes, only check the syntax
+    # print extra information about the command's progress
+    if $verbose { print $"running ('toolkit fmt' | pretty-print-command)" }
     if $check {
-        try {
-            cargo fmt --all -- --check
-        } catch {
-            error make --unspanned {
-                msg: $"\nplease run ('toolkit fmt' | pretty-print-command) to fix formatting!"
-            }
-        }
-    } else {
-        cargo fmt --all
-    }
+        try { cargo fmt --all -- --check } catch { error make --unspanned {
+            msg: $"\nplease run ('toolkit fmt' | pretty-print-command) to fix formatting!"
+        } }
+    } else { cargo fmt --all }
 }
-
 # check that you're using the standard code style
 #
 # > it is important to make `clippy` happy :relieved:
-export def clippy [
-    --verbose # print extra information about the command's progress
-] {
-    if $verbose {
-        print $"running ('toolkit clippy' | pretty-print-command)"
-    }
-
-    try {(
-        cargo clippy
-            --all-targets
-            --no-deps
-            --workspace
-        --
-            -D warnings
-            -D rustdoc::broken_intra_doc_links
-            -W clippy::explicit_iter_loop
-            -W clippy::explicit_into_iter_loop
-            -W clippy::semicolon_if_nothing_returned
-            -W clippy::doc_markdown
-            -W clippy::manual_let_else
-    )} catch {
-        error make --unspanned {
-            msg: $"\nplease fix the above ('clippy' | pretty-print-command) errors before continuing!"
-        }
-    }
+export def clippy [--verbose] {
+    # print extra information about the command's progress
+    if $verbose { print $"running ('toolkit clippy' | pretty-print-command)" }
+    try { (cargo clippy --all-targets --no-deps --workspace -- -D warnings -D rustdoc::broken_intra_doc_links -W clippy::explicit_iter_loop -W clippy::explicit_into_iter_loop -W clippy::semicolon_if_nothing_returned -W clippy::doc_markdown -W clippy::manual_let_else) } catch { error make --unspanned {
+        msg: $"\nplease fix the above ('clippy' | pretty-print-command) errors before continuing!"
+    } }
 }
-
 # check that all the tests pass
-export def test [
-    --fast  # use the "nextext" `cargo` subcommand to speed up the tests (see [`cargo-nextest`](https://nexte.st/) and [`nextest-rs/nextest`](https://github.com/nextest-rs/nextest))
-] {
-    if $fast {
-        cargo nextest run --all
-    } else {
-        cargo test --workspace
-    }
+export def test [--fast] {
+    # use the "nextext" `cargo` subcommand to speed up the tests (see [`cargo-nextest`](https://nexte.st/) and [`nextest-rs/nextest`](https://github.com/nextest-rs/nextest))
+    if $fast { cargo nextest run --all } else { cargo test --workspace }
 }
-
 export def main [] { help toolkit }