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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: file-relative-name and remote files
Date: Sun, 09 Mar 2003 14:25:09 -0500
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    So maybe expand-file-name should re-invoke itself until it reaches a
    fixpoint?

There is surely no need for that.  One pass through expand-file-name
can directly do all the expansion that ought to be done.  The question
is precisely what it should do.