From c8849558fa76068fdbcd04a729dad9a73cdc55ae Mon Sep 17 00:00:00 2001
From: deathaxe <deathaxe82@gmail.com>
Date: Wed, 10 Dec 2025 17:50:46 +0100
Subject: [PATCH] Add support for custom @import modifier functions

This commit adds patterns to scope function calls of unknown names
within import at-rules, as PostCSS can add additional language features
via plugins' custom parsers.
---
 PostCSS.sublime-syntax          |  8 ++++++++
 tests/syntax_test_scope.postcss | 19 +++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/PostCSS.sublime-syntax b/PostCSS.sublime-syntax
index c97eb6b..f842ce2 100644
--- a/PostCSS.sublime-syntax
+++ b/PostCSS.sublime-syntax
@@ -57,6 +57,14 @@ contexts:
     - include: postcss-variable-definitions
     - include: postcss-variables
 
+  at-import-body:
+    - meta_prepend: true
+    - match: (?:(?!layer|supports|url){{ident}})(?=\()
+      scope: meta.function-call.identifier.css variable.function.css
+      push:
+        - other-function-arguments-list-body
+        - function-arguments-list-begin
+
   at-other:
     - meta_prepend: true
     - include: postcss-at-apply
diff --git a/tests/syntax_test_scope.postcss b/tests/syntax_test_scope.postcss
index 392e1be..16c07bd 100644
--- a/tests/syntax_test_scope.postcss
+++ b/tests/syntax_test_scope.postcss
@@ -24,6 +24,25 @@
 //        ^^^ variable.other.postcss
 //           ^ punctuation.section.interpolation.end.postcss
 
+/*
+ * import at-rules
+ */
+
+    @import "url" prefix(tw);
+//^^^^^^^^^^^^^^^^^^^^^^^^^^^ source.css.postcss
+//  ^^^^^^^^^^^^^^^^^^^^^^^^ meta.at-rule.import.css
+//  ^^^^^^^ keyword.control.directive.css
+//  ^ punctuation.definition.keyword.css
+//          ^^^^^ meta.string.css string.quoted.double.css
+//          ^ punctuation.definition.string.begin.css
+//              ^ punctuation.definition.string.end.css
+//                ^^^^^^ variable.function.css
+//                      ^^^^ meta.function-call.arguments.css meta.group.css
+//                      ^ punctuation.section.group.begin.css
+//                       ^^ support.constant.property-value.css
+//                         ^ punctuation.section.group.end.css
+//                          ^ punctuation.terminator.rule.css
+
 /*
  * unknown at-rules
  */