From 759f0871f71262f898ad9a30c0907ce8b11876b0 Mon Sep 17 00:00:00 2001
From: rowhel95 <rowhel95@live.nl>
Date: Wed, 23 Mar 2022 17:54:08 +0100
Subject: [PATCH] Fix minified CSS variable with leading whitespaces

Fixes #378
---
 src/CSS.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/CSS.php b/src/CSS.php
index 1b354ad..9226df2 100644
--- a/src/CSS.php
+++ b/src/CSS.php
@@ -740,7 +740,7 @@ class CSS extends Minify
         // PHP only supports $this inside anonymous functions since 5.4
         $minifier = $this;
         $this->registerPattern(
-            '/(?<=^|[;}])(--[^:;{}"\'\s]+)\s*:([^;{}]+)/m',
+            '/(?<=^|[;}])\s*(--[^:;{}"\'\s]+)\s*:([^;{}]+)/m',
             function ($match) use ($minifier) {
                 $placeholder = '--custom-'. count($minifier->extracted) . ':0';
                 $minifier->extracted[$placeholder] = $match[1] .':'. trim($match[2]);