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Re: how would you debug complex regexp searches??


From: Jesper Harder
Subject: Re: how would you debug complex regexp searches??
Date: Sun, 21 Sep 2003 02:58:47 +0200
User-agent: Gnus/5.1003 (Gnus v5.10.3) Emacs/21.3.50 (gnu/linux)

address@hidden writes:

> How would one go about debugging complicated regular expressions? Is
> there some way of single-stepping through a regexp matching, so that
> I can see all the characters that were matched?

're-builder' is quite handy for writing and debugging regexps.

It's bundled with recent versions Emacs -- read the Commentary section
of re-builder.el to learn how to use it.


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