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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: abbreviate-file-name on Windows seems incorrect
Date: Sat, 06 Jan 2007 23:51:01 +0200
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References: <EIENLHALHGIMHGDOLMIMEEBOCOAA.drew.adams@oracle.com>
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> From: "Drew Adams" <drew.adams@oracle.com>
> Date: Sat, 6 Jan 2007 08:22:09 -0800
> 
> I see. To tell the truth, I didn't bother to change $HOME outside Emacs and
> start emacs -Q again to test the case other than HOME = "c:\\". I did try
> using `setenv' to change "HOME", but that apparently doesn't have an effect
> here.

setenv only manipulates the environment that is passed to child
processes, but does not modify Emacs's own environment.

> How about mentioning in the doc string that "~" is not substituted for the
> user's home dir if that is the root. ("/" in Unix or Linux,
> "<drive-letter>:\" in Windows)?

Done.