GNU bug report logs - #6401
Failure in loading charset map: JISX0208

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 6401 <at> debbugs.gnu.org, tim <at> tenkan.org
Subject: bug#6401: 
Date: Tue, 22 Nov 2011 20:09:54 +0200

> From: Glenn Morris <rgm <at> gnu.org>
> Cc: tim <at> tenkan.org,  6401 <at> debbugs.gnu.org
> Date: Tue, 22 Nov 2011 12:32:49 -0500
> 
> Eli Zaretskii wrote:
> 
> > Building Emacs is just one use case, even if we find a solution for
> > it.  The problem is much broader: Emacs running as a child of another
> > Emacs gets EMACSDATA etc. variables that could well point to a wrong
> > place, because they were set by a different Emacs version.
> 
> But I would imagine that building Emacs from inside Emacs accounts for
> the majority of cases where Emacs is run as a child of another Emacs.
> (I can't think of any other reason one would want to do it.)

The other important use case is running Emacs under a debugger invoked
through GUD.  This actually runs a higher risk of having two different
Emacs versions: imagine that a newer Emacs has a grave bug that
doesn't allow it to be used to run a debugger.

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