RE: Why are RegExps never working?

[Drew Adams]

> >> If you're having a hard time learning how regexps work, then
> >> regex-tool seems like a great learning aid:
> >>
> >>   ftp://ftp.newartisans.com/pub/regex-tool.el
> >>
> >> I've only tried it for a couple of minutes, but it looks really
> >> useful.
> > 
> > Thank you for the suggestion. I've installed regex-tool and I have the
> > impression that it's a good way to become familiar with the topic.
> 
> I have found the rx function in Emacs 22 useful when writing elisp code 
> that uses regexps. It makes the regexps much easier to read IMO. You can 
> also use that to learn how regexp.

http://www.emacswiki.org/cgi-bin/emacs-en?CategoryRegexp