From c08bb7a84728bae4edbee3ba47aa1cd17e6da53b Mon Sep 17 00:00:00 2001
From: dweep <existing1.001@gmail>
Date: Sun, 5 Jul 2026 12:12:05 +0530
Subject: [PATCH] SCSS: Support parameterized pseudo-classes in selectors

Fixes #3740. Selectors like `:foo()` were not being highlighted
because the selector pattern excluded all parentheses. This adds
a constrained alternative that only allows balanced parens when
they directly follow a pseudo-class (`:name(...)` or `::name(...)`),
which fixes the reported case without regressing the @mixin/@include
argument-list case Golmote flagged in the original workaround.
---
 src/languages/scss.js                      |  2 +-
 tests/languages/scss/selector_feature.test | 10 ++++------
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/languages/scss.js b/src/languages/scss.js
index e23fe29950..6277f7db5c 100644
--- a/src/languages/scss.js
+++ b/src/languages/scss.js
@@ -29,7 +29,7 @@ export default {
 			'selector': {
 				// Initial look-ahead is used to prevent matching of blank selectors
 				pattern:
-					/(?=\S)[^@;{}()]?(?:[^@;{}()\s]|\s+(?!\s)|#\{\$[-\w]+\})+(?=\s*\{(?:\}|\s|[^}][^:{}]*[:{][^}]))/,
+					/(?=\S)[^@;{}()]?(?:[^@;{}()\s]|\s+(?!\s)|#\{\$[-\w]+\}|:{1,2}[-\w]+\((?:[^()]|\([^()]*\))*\))+(?=\s*\{(?:\}|\s|[^}][^:{}]*[:{][^}]))/,
 				inside: {
 					'parent': {
 						pattern: /&/,
diff --git a/tests/languages/scss/selector_feature.test b/tests/languages/scss/selector_feature.test
index cb305dfbd6..32cd21cbd3 100644
--- a/tests/languages/scss/selector_feature.test
+++ b/tests/languages/scss/selector_feature.test
@@ -5,9 +5,8 @@ p, div {}
 &-sidebar {}
 #context a%extreme {}
 #{$selector}:before {}
-
+foo :foo() bar {}
 ----------------------------------------------------
-
 [
 	["selector", ["a "]], ["punctuation", "{"], ["punctuation", "}"],
 	["selector", ["p, div "]], ["punctuation", "{"], ["punctuation", "}"],
@@ -15,9 +14,8 @@ p, div {}
 	["selector", [["parent", "&"], ":hover "]], ["punctuation", "{"], ["punctuation", "}"],
 	["selector", [["parent", "&"], "-sidebar "]], ["punctuation", "{"], ["punctuation", "}"],
 	["selector", ["#context a", ["placeholder", "%extreme"]]], ["punctuation", "{"], ["punctuation", "}"],
-	["selector", [["variable", "#{$selector}"], ":before "]], ["punctuation", "{"], ["punctuation", "}"]
+	["selector", [["variable", "#{$selector}"], ":before "]], ["punctuation", "{"], ["punctuation", "}"],
+	["selector", ["foo :foo() bar "]], ["punctuation", "{"], ["punctuation", "}"]
 ]
-
 ----------------------------------------------------
-
-Checks for selectors.
\ No newline at end of file
+Checks for selectors.