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From: David Kastrup <dak@gnu.org>
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Subject: Re: Regexp replacement
Date: Sat, 28 Oct 2006 00:45:15 +0200
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Jim Dai <jgjimdai_p@yahoo.com> writes:

> I would like to delete \redtext{long text} with "long text" being kept.
> I have any instances in a file, with "long text" varying that may include
> other latex symbols like _ $. (assume there are not any {} pairs inside the
> text.
>
> How can I use regexp replacement to achieve the desired changes?

M-x query-replace-regexp RET \\redtext{\([^}]*\)} RET \1 RET

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum