Fix for parsing quoted values in selector

Author: DenVdmj

lib/parse/index.js

@@ -198,7 +198,7 @@ module.exports = function(css, options){
      * http://ostermiller.org/findcomment.html */
     return trim(m[0])
       .replace(/\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*\/+/g, '')
-      .replace(/(?:"[^"]*"|'[^']*')/g, function(m) {
+      .replace(/(?:"(?:\\"|[^"])*")|(?:'(?:\\'|[^'])*')/g, function(m) {
         return m.replace(/,/g, '\u200C');
       })
       .split(/\s*(?![^(]*\)),\s*/)