ChrisYip/Better-CSS-Syntax-for-Vim — pull request #12 by amadeus (2013-06-19 05:07:31+00:00)
Title: Fixing compatibility with defauly css syntax

There's a bug if the default CSS syntax file is loaded after this one,
it clobbers the regexes and creates buggy syntax highlighting.

Adding b:current_syntax stops the default css syntax file from
executing.

I initially came across this issue since I use the plugin with Vundle package manager.