From 1c44f18c7322449990f790e92ae4a50188a3dac8 Mon Sep 17 00:00:00 2001
From: Romain Menke <11521496+romainmenke@users.noreply.github.com>
Date: Fri, 16 Jun 2023 16:02:14 +0200
Subject: [PATCH]  Fix `function-no-unknown` false positives for SCSS functions
 with namespace (#6921)

---
 .changeset/brave-balloons-rescue.md              | 5 +++++
 lib/rules/function-no-unknown/__tests__/index.js | 4 ++++
 lib/utils/isStandardSyntaxValue.js               | 5 +++++
 3 files changed, 14 insertions(+)
 create mode 100644 .changeset/brave-balloons-rescue.md

diff --git a/.changeset/brave-balloons-rescue.md b/.changeset/brave-balloons-rescue.md
new file mode 100644
index 0000000000..26e54f5538
--- /dev/null
+++ b/.changeset/brave-balloons-rescue.md
@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: `function-no-unknown` false positives for SCSS functions with namespace
diff --git a/lib/rules/function-no-unknown/__tests__/index.js b/lib/rules/function-no-unknown/__tests__/index.js
index fe6e87ab04..a0a9d5cacf 100644
--- a/lib/rules/function-no-unknown/__tests__/index.js
+++ b/lib/rules/function-no-unknown/__tests__/index.js
@@ -28,6 +28,10 @@ testRule({
 		{
 			code: 'a { height: calc(10px*(5*(10 - 5))); }',
 		},
+		{
+			code: 'a { transform: color.adjust(1px); transform: rgb(color.adjust(1px)); }',
+			description: 'ignore scss namespaced functions',
+		},
 	],
 
 	reject: [
diff --git a/lib/utils/isStandardSyntaxValue.js b/lib/utils/isStandardSyntaxValue.js
index d19100b83a..54d75474c0 100644
--- a/lib/utils/isStandardSyntaxValue.js
+++ b/lib/utils/isStandardSyntaxValue.js
@@ -26,6 +26,11 @@ module.exports = function isStandardSyntaxValue(value) {
 		return false;
 	}
 
+	// SCSS namespace (example namespace.function-name())
+	if (/^.+\.[-\w]+\(/.test(value)) {
+		return false;
+	}
+
 	// Less variable
 	if (normalizedValue.startsWith('@')) {
 		return false;