From 3951b93518878289bcdaaa57c123c2cca9e3b214 Mon Sep 17 00:00:00 2001
From: Jakub Pawlowicz <contact@jakubpawlowicz.com>
Date: Sun, 27 Jul 2014 00:08:53 +0100
Subject: [PATCH] Fixes #325 - removing invalid special declarations.

---
 History.md        | 5 +++++
 lib/clean.js      | 3 +++
 test/unit-test.js | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/History.md b/History.md
index fb1c42d6..0ce49bbf 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,8 @@
+[2.2.10 / 2014-xx-xx](https://github.com/GoalSmashers/clean-css/compare/v2.2.9...v2.2.10)
+==================
+
+* Fixed issue [#325](https://github.com/GoalSmashers/clean-css/issues/325) - removing invalid @charset declarations.
+
 [2.2.9 / 2014-07-23](https://github.com/GoalSmashers/clean-css/compare/v2.2.8...v2.2.9)
 ==================
 
diff --git a/lib/clean.js b/lib/clean.js
index a36ad1ef..f5cbfb75 100644
--- a/lib/clean.js
+++ b/lib/clean.js
@@ -189,6 +189,9 @@ var minify = function(data, callback) {
     data = urlsProcessor.escape(data);
   });
 
+  // remove invalid special declarations
+  replace(/@(?:IMPORT|CHARSET) [^;]+;/g, '');
+
   // whitespace inside attribute selectors brackets
   replace(/\[([^\]]+)\]/g, function(match) {
     return match.replace(/\s/g, '');
diff --git a/test/unit-test.js b/test/unit-test.js
index 7c0183c5..84ae6cd7 100644
--- a/test/unit-test.js
+++ b/test/unit-test.js
@@ -221,6 +221,10 @@ vows.describe('clean-units').addBatch({
     'charset with double line break': [
       "@charset 'utf-8';" + lineBreak + lineBreak + "a{display:block}",
       "@charset 'utf-8';" + lineBreak + "a{display:block}"
+    ],
+    'uppercase charset': [
+      "@CHARSET 'utf-8';h1{color:red}",
+      'h1{color:red}'
     ]
   }, { keepBreaks: true }),
   'line breaks and important comments': cssContext({
-- 
2.34.1