Merge pull request #369 from 10up/fix/wp-custom-property-pattern

Fix: `custom-property-pattern` to also match single `-` separators

.changeset/funny-dogs-learn.md

@@ -0,0 +1,5 @@
+---
+"@10up/stylelint-config": patch
+---
+
+Update `custom-property-pattern` regular expression to also match custom properties that use a singular `-` as a group separator

packages/stylelint-config/index.js

@@ -25,7 +25,7 @@ module.exports = {
 			},
 		],
 		'custom-property-pattern': [
-			'^([a-z][a-z0-9]*)(-[a-z0-9]+)*$|^wp--([a-z][a-z0-9]*)(--[a-z0-9]+)*$',
+			'^([a-z][a-z0-9]*)(-[a-z0-9]+)*$|^wp--([a-z][a-z0-9]*)([-]{1,2}[a-z0-9]+)*$',
 			{
 				message: 'Expected custom property name to be kebab-case or wp--kebab--case',
 			},