Fix Attributes extension parsing regression (#1071)

Author: colinodell

CHANGELOG.md

@@ -6,6 +6,10 @@ Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) princi
 
 ## [Unreleased][unreleased]
 
+### Fixed
+
+- Fixed Attributes extension parsing regression (#1071)
+
 ## [2.6.1] - 2024-12-29
 
 ### Fixed

src/Extension/Attributes/Util/AttributesHelper.php

@@ -23,7 +23,7 @@
  */
 final class AttributesHelper
 {
-    private const SINGLE_ATTRIBUTE = '\s*([.]-?[_a-z][^\s}]*|[#][^\s}]+|' . RegexHelper::PARTIAL_ATTRIBUTENAME . RegexHelper::PARTIAL_ATTRIBUTEVALUESPEC . ')\s*';
+    private const SINGLE_ATTRIBUTE = '\s*([.]-?[_a-z][^\s.}]*|[#][^\s}]+|' . RegexHelper::PARTIAL_ATTRIBUTENAME . RegexHelper::PARTIAL_ATTRIBUTEVALUESPEC . ')\s*';
     private const ATTRIBUTE_LIST   = '/^{:?(' . self::SINGLE_ATTRIBUTE . ')+}/i';
 
     /**

tests/unit/Extension/Attributes/Util/AttributesHelperTest.php

@@ -108,6 +108,9 @@ public static function dataForTestParseAttributes(): iterable
         yield [new Cursor('{{ foo }}'), [], '{{ foo }}'];
         yield [new Cursor(' {{ foo }}'), [], ' {{ foo }}'];
         yield [new Cursor('{ foo }}'), [], '{ foo }}'];
+
+        // Issue 1071
+        yield [new Cursor('{.display-4.mt-5.mx-auto}'), ['class' => 'display-4 mt-5 mx-auto']];
     }
 
     /**