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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.bugs
Subject: Re: replace history
Date: Sat, 05 Jan 2008 00:54:20 -0500
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To: Juri Linkov <juri@jurta.org>
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    One way to move thru the history of recent pairs is to put all pairs to
    the default list of M-%.

I am not sure what that means.  Do you mean, instead of putting both
args separately in the history list, put a string of the form "FROM ->
TO" in it?

That seems kludgy.  Also, it raises two questions:

1. Does that actually work?

2. Would that make it impossible to do the things you can do now with
the history in query-replace, such as use a previous replacement
target as a pattern to search for?