What is the REGEX of a CSS selector

Question

I\'d like to parce a CSS file and add before every CSS selector another selector.

From:

p{margin:0 0 10px;}
.lead{margin-bottom:20px;font-size:21px;font-         


        

Answer 1

So I've finally found a REGEX that works for my requirements

([^\r\n,{}]+)(,(?=[^}]*{)|\s*{)

The key point was to add a Positive lookahead to avoid bad matches

(?=[^}]*{)

You can see the result here: http://regexr.com?328s7

The only precaution that I can recommend is to remove every block comment:

• bad sample with block comment: http://regexr.com?328sd