From 12b698666d5a5170d49e3a853d0e841344084760 Mon Sep 17 00:00:00 2001
From: sb3nder <ibrahim.bendebka@gmail.com>
Date: Sat, 9 May 2026 22:06:46 +0200
Subject: [PATCH] feat(css): Update computed for
 `border/column-rule/outline-width`, `outline-offset`

---
 css/properties.json        | 30 +++++++++++++++---------------
 css/properties.schema.json |  1 +
 l10n/css.json              |  3 +++
 3 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/css/properties.json b/css/properties.json
index 48d84e5cd..a4c787417 100644
--- a/css/properties.json
+++ b/css/properties.json
@@ -1214,7 +1214,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLength",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "nonstandard"
   },
@@ -1287,7 +1287,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLength",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "nonstandard"
   },
@@ -1359,7 +1359,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLength",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "nonstandard"
   },
@@ -1431,7 +1431,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLength",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "nonstandard"
   },
@@ -2804,7 +2804,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthZeroIfBorderStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/border-block-end-width"
@@ -2880,7 +2880,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthZeroIfBorderStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/border-block-start-width"
@@ -3050,7 +3050,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthOr0IfBorderBottomStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "alsoAppliesTo": [
       "::first-letter"
@@ -3405,7 +3405,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthZeroIfBorderStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/border-inline-end-width"
@@ -3481,7 +3481,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthZeroIfBorderStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/border-inline-start-width"
@@ -3613,7 +3613,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthOr0IfBorderLeftStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "alsoAppliesTo": [
       "::first-letter"
@@ -3735,7 +3735,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthOr0IfBorderRightStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "alsoAppliesTo": [
       "::first-letter"
@@ -3944,7 +3944,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLengthOr0IfBorderTopStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "alsoAppliesTo": [
       "::first-letter"
@@ -4582,7 +4582,7 @@
     ],
     "initial": "medium",
     "appliesto": "multicolElements",
-    "computed": "absoluteLength0IfColumnRuleStyleNoneOrHidden",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "perGrammar",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/column-rule-width"
@@ -8586,7 +8586,7 @@
     ],
     "initial": "0",
     "appliesto": "allElements",
-    "computed": "asSpecifiedRelativeToAbsoluteLengths",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/outline-offset"
@@ -8624,7 +8624,7 @@
     ],
     "initial": "medium",
     "appliesto": "allElements",
-    "computed": "absoluteLength0ForNone",
+    "computed": "absoluteLengthSnappedAsLineWidth",
     "order": "uniqueOrder",
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/outline-width"
diff --git a/css/properties.schema.json b/css/properties.schema.json
index 1572ad954..69d054b29 100644
--- a/css/properties.schema.json
+++ b/css/properties.schema.json
@@ -116,6 +116,7 @@
         "absoluteLengthOrNormal",
         "absoluteLengthOrPercentage",
         "absoluteLengthOrPercentageNumbersConverted",
+        "absoluteLengthSnappedAsLineWidth",
         "absoluteLengthsSpecifiedColorAsSpecified",
         "absoluteLengthZeroIfBorderStyleNoneOrHidden",
         "absoluteLengthZeroOrLarger",
diff --git a/l10n/css.json b/l10n/css.json
index 78ea2ea0f..17e99b317 100644
--- a/l10n/css.json
+++ b/l10n/css.json
@@ -119,6 +119,9 @@
     "en-US": "an absolute {{cssxref(\"length\")}} or {{cssxref(\"percentage\")}}, numbers converted to absolute lengths first",
     "fr": "une longueur ({{cssxref(\"length\")}}) absolue ou un pourcentage ({{cssxref(\"percentage\")}}), les nombres étant d'abord convertis en longueurs absolues"
   },
+  "absoluteLengthSnappedAsLineWidth": {
+    "en-US": "the absolute length, <a title=\"To snap a &lt;length&gt; len as a line width:&#10;1. If len is an integer number of device pixels, leave it as is.&#10;2. If the absolute value of len is greater than zero, but less than 1 device pixel, round it away from zero to &pm;1 device pixel.&#10;3. If the absolute value of len is greater than 1 device pixel, round it towards zero to the nearest integer number of device pixels.\">snapped as a line width</a>"
+  },
   "absoluteLengthsSpecifiedColorAsSpecified": {
     "de": "Längen absolut gemacht; angegebene Farben berechnet; ansonsten wie angegeben",
     "en-US": "any length made absolute; any specified color computed; otherwise as specified",