[email protected] wrote:

Okay, how about http://ourworld.compuserve.com/homepages/john_maddock/regexpp.htm, then: "This version supports the full POSIX syntax including multi-character collating elements and equivalence classes, as well as some of Perl's features like non-greedy repeats, forward lookahead asserts, and non-marking parenthesis."

It's part of the Boost C++ library.

Boost seems to have different segment under different licenses?  From what I've heard you (and others) say about boost, using it is probably a good thing.

The license seems fine too:

Copyright (c) 1998-2000
Dr John Maddock

Permission to use, copy, modify, distribute and sell this software
and its documentation for any purpose is hereby granted without fee,
provided that the above copyright notice appear in all copies and
that both that copyright notice and this permission notice appear
in supporting documentation.  Dr John Maddock makes no representations
about the suitability of this software for any purpose.  It is provided "as is" without express or implied warranty.

Footnotes:
1) Localised versions may translate the above notice into the native
  language of the version.
2) The above notice applies to source code and documentation, users
  who are distributing only binary forms, need only indicate, somewhere
  in their documentation or in their help|about notice that the product
  uses this library and that the copyright is Dr John Maddock 1998-2000

- Todd