Hi Edmund Another suggestion: It would be cool if the the Replace could work correctly with backreferences. I.e regex: a(b)e replace: $1an result: ban This will allow me to test replace expressions as well. Thanks Alex

Hi, On Thu, Jun 25, 2009 at 2:17 PM, Alex Grässer<pyropunk51@gmail.com> wrote:

Thank you very much for Regex Coach. It has helped tremendously!

You're welcome... :)

Recently I needed to use a negative look-behind with multiple exclusions and found that Regex Coach does not support variable length look-behind.

\\[^\\]*(?<!(tmp|files))$

gives an error that "Variable length look-behind not implemented (yet)"

whereas

\\[^\\]*(?<!(tmp|les))$

works, except that it excludes more than required.

Interestingly WinMerge also has this restriction ;-)

Most regex engines have this restriction. In fact, I don't know any offhand that don't. (But I'm not an expert.) Having said that, I don't have plans to implement variable-length look-behind anytime soon. Sorry if the "yet" part seems to imply otherwise. Cheers, Edi.