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From: "rturrado" <rturrado@gmail.com>
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Subject: query-replace-regexp number number+1
Date: 11 Apr 2006 09:04:59 -0700
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Hi,

I wonder if you can do that easily in emacs: to search for a number,
let's say \([0-9]+\), and replace it with its successor, let's say
\1+1. The query I've just written would replace 25 with 25+1. What I
want is to evaluate 25+1 and replace 25 with 26.

Thanks, Roberto.