From 4ea66ce0d1845b3ada3fa667487fc3d74173692c Mon Sep 17 00:00:00 2001
From: Oliver Klee <github@oliverklee.de>
Date: Fri, 19 Sep 2025 17:23:57 +0200
Subject: [PATCH] [BUGFIX] Use safe preg functions in `Rule`

Part of #1168
---
 CHANGELOG.md      | 2 +-
 src/Rule/Rule.php | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c3d18917..cb49ebbd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,7 +18,7 @@ Please also have a look at our
 
 ### Fixed
 
-- Use typesafe versions of PHP functions (#1379, #1380, #1382)
+- Use typesafe versions of PHP functions (#1379, #1380, #1382, #1383)
 
 ### Documentation
 
diff --git a/src/Rule/Rule.php b/src/Rule/Rule.php
index 8e2e81d0..96ef1b4d 100644
--- a/src/Rule/Rule.php
+++ b/src/Rule/Rule.php
@@ -17,6 +17,8 @@
 use Sabberworm\CSS\Value\RuleValueList;
 use Sabberworm\CSS\Value\Value;
 
+use function Safe\preg_match;
+
 /**
  * `Rule`s just have a string key (the rule) and a 'Value'.
  *
@@ -100,7 +102,7 @@ public static function parse(ParserState $parserState, array $commentsBeforeRule
      */
     private static function listDelimiterForRule(string $rule): array
     {
-        if (\preg_match('/^font($|-)/', $rule)) {
+        if (preg_match('/^font($|-)/', $rule) === 1) {
             return [',', '/', ' '];
         }