2 files changed, 12 insertions, 0 deletions
diff --git a/node_modules/clean-css/lib/tokenizer/marker.js b/node_modules/clean-css/lib/tokenizer/marker.js
index c3f6805a7..767a5f0e8 100644
--- a/node_modules/clean-css/lib/tokenizer/marker.js
+++ b/node_modules/clean-css/lib/tokenizer/marker.js
@@ -10,6 +10,7 @@ var Marker = {
   DOUBLE_QUOTE: '"',
   EXCLAMATION: '!',
   FORWARD_SLASH: '/',
+  INTERNAL: '-clean-css-',
   NEW_LINE_NIX: '\n',
   NEW_LINE_WIN: '\r',
   OPEN_CURLY_BRACKET: '{',
diff --git a/node_modules/clean-css/lib/tokenizer/tokenize.js b/node_modules/clean-css/lib/tokenizer/tokenize.js
index 15fb584a0..7c071dd93 100644
--- a/node_modules/clean-css/lib/tokenizer/tokenize.js
+++ b/node_modules/clean-css/lib/tokenizer/tokenize.js
@@ -28,6 +28,7 @@ var BLOCK_RULES = [
   '@supports'
 ];
 
+var REPEAT_PATTERN = /^\[\s*\d+\s*\]$/;
 var RULE_WORD_SEPARATOR_PATTERN = /[\s\(]/;
 var TAIL_BROKEN_VALUE_PATTERN = /[\s|\}]*$/;
 
@@ -377,6 +378,12 @@ function intoTokens(source, externalContext, internalContext, isNested) {
       propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);
 
       buffer = [];
+    } else if (character == Marker.CLOSE_SQUARE_BRACKET && propertyToken && propertyToken.length > 1 && buffer.length > 0 && isRepeatToken(buffer)) {
+      buffer.push(character);
+      serializedBuffer = buffer.join('').trim();
+      propertyToken[propertyToken.length - 1][1] += serializedBuffer;
+
+      buffer = [];
     } else if ((isSpace || (isNewLineNix && !isNewLineWin)) && level == Level.RULE && seekingValue && propertyToken && buffer.length > 0) {
       // space or *nix newline within property, e.g. a{margin:0 <--
       serializedBuffer = buffer.join('').trim();
@@ -460,4 +467,8 @@ function tokenScopeFrom(tokenType) {
   }
 }
 
+function isRepeatToken(buffer) {
+  return REPEAT_PATTERN.test(buffer.join('') + Marker.CLOSE_SQUARE_BRACKET);
+}
+
 module.exports = tokenize;