GNU bug report logs - #4243
Emacs 23 ido-mode vc-hg bug

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: Dan Nicolaescu <dann <at> ics.uci.edu>
Subject: bug#4243: marked as done (Emacs 23 ido-mode vc-hg bug)
Date: Mon, 24 Aug 2009 19:55:06 +0000

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Your message dated Mon, 24 Aug 2009 12:47:31 -0700 (PDT)
with message-id <200908241947.n7OJlV3W001678 <at> godzilla.ics.uci.edu>
and subject line Re: bug#4243: Emacs 23 ido-mode vc-hg bug
has caused the Emacs bug report #4243,
regarding Emacs 23 ido-mode vc-hg bug
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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4243: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=4243
Emacs Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Tracy Reed <treed <at> copilotco.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Emacs 23 ido-mode vc-hg bug
Date: Sun, 23 Aug 2009 16:03:21 -0700

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When I start emacs 23.1.1 which I compiled myself from code downloaded
from the official site:

GNU Emacs 23.1.1 (x86_64-unknown-linux-gnu) of 2009-08-05 on mail.copilotco.com

using emacs -Q (so my .emacs and site-lisp are not involved) I run
into an error when I activate ido-mode and try to exit emacs with
ctrl-x ctrl-c. Here is what appears in my Messages buffer:

("emacs" "-Q")
For information about GNU Emacs and the GNU system, type C-h C-a.
Ido mode enabled
Loading tramp...done
Quit [2 times]
(No files need saving)
Saving file /home/treed/.ido.last...
Loading vc-hg...done
Wrote /home/treed/.ido.last
vc-hg-registered: Args out of range: "", 0

I started emacs with -Q, then I did M-x ido-mode, then I did ctrl-x
ctrl-c. Then I get the:

vc-hg-registered: Args out of range: "", 0

error. I cannot exit emacs. I have to ctrl-z and kill it.  I suspect
vc-hg might have been activated because my home directory is under hg
version control. I'm not sure why it says "Loading tramp" there. I
did not do anything with tramp.

Please advise of any fixes/workarounds or if there is any more
information I can provide or anything I can do to resolve this.

Thanks!

-- 
Tracy Reed
http://copilotco.com

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From: Dan Nicolaescu <dann <at> ics.uci.edu>
To: Tracy Reed <treed <at> copilotco.com>
Cc: 4243-done <at> debbugs.gnu.org
Subject: Re: bug#4243: Emacs 23 ido-mode vc-hg bug
Date: Mon, 24 Aug 2009 12:47:31 -0700 (PDT)

Tracy Reed <treed <at> copilotco.com> writes:

  > On Mon, Aug 24, 2009 at 12:30:54PM -0700, Tracy Reed spake thusly:
  > > Not a command line flag but the command:
  > > 
  > > hg help env 
  > > 
  > > mentions the HGRCPATH environment variable. It is a typical :
  > 
  > Hmm...the hg guys warn that disabling reading of the users .hgrc file
  > would "mess up the ability to utilize any extensions the user has
  > enabled, committing would be problematic as the username wouldn't be
  > set, and so on." So...

I am closing this bug then, there's nothing we can do in emacs.
This sounds like a design bug in mercurial, tools (like emacs in this
case) cannot rely on getting consistent output from hg commands.

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