[Boost-users] [regex] Bug: negative lookahead does not work in 1.33.0

From: Rob Willis (rob.willis_at_[hidden])
Date: 2005-09-27 16:28:42

The following regex should match any document that IS NOT a pdf file:

 

  .*[.](?!pdf$).*$

 

This regex should match:

 

     Mynotes.doc

 

It should fail on:

 

    Myinfo.pdf

 

However, the above regex returns true on both using boost 1.33.0.

 

But positive lookahead works fine:

 

  .*[.](?=pdf$).*$

 

Above regex correctly matches only documents ending in .pdf .

 

Can anyone confirm this is a bug?

 

Thanks,

-Rob