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bug#7227: re-search-forward goes infinite loop with dash inside []


From: Andreas Schwab
Subject: bug#7227: re-search-forward goes infinite loop with dash inside []
Date: Sat, 16 Oct 2010 13:27:36 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)

Jari Aalto <address@hidden> writes:

> Executing the following code causes Emacs to go into infinite loop.
> Simply run it behind the last paren with C-x C-e
>
> (re-search-forward "^\\([a-z0-9.-]+\\)+[ \t]+\\([0-9]+\\) +\\([a-z].*\\)")

Works fine here.

Note that nested repetitions like \([...]+\)+ are bad in any case.

Andreas.

-- 
Andreas Schwab, address@hidden
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