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Re: FW: default buffer-enable-undo

From: David L
Subject: Re: FW: default buffer-enable-undo
Date: Wed, 20 Sep 2006 18:12:22 -0700

undo is sometimes disabled by default.  It seems to be only
binary  files that are affected.  To produce this problem,
I typed "emacs /usr/local/bin/emacs".  Then I pressed the
space bar and then typed "C-x u" to undo the change I had
made.  emacs then told me that "No undo information in this buffer".

In GNU Emacs (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2006-09-20 on beavis.localhost.localdomain
X server distributor `The X.Org Foundation', version 11.0.70000000
Important settings:
 value of $LC_ALL: nil
 value of $LC_COLLATE: nil
 value of $LC_CTYPE: nil
 value of $LC_MESSAGES: nil
 value of $LC_MONETARY: nil
 value of $LC_NUMERIC: nil
 value of $LC_TIME: nil
 value of $LANG: en_US.UTF-8
 locale-coding-system: utf-8
 default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
 tooltip-mode: t
 tool-bar-mode: t
 mouse-wheel-mode: t
 menu-bar-mode: t
 file-name-shadow-mode: t
 global-font-lock-mode: t
 font-lock-mode: t
 blink-cursor-mode: t
 unify-8859-on-encoding-mode: t
 utf-translate-cjk-mode: t
 auto-compression-mode: t
 line-number-mode: t

Recent input:
SPC C-x u <escape> x r e p o r t SPC SPC SPC <return>

Recent messages:
(emacs /usr/local/bin/emacs)
For information about the GNU Project and its goals, type C-h C-p. [2 times]
undo-start: No undo information in this buffer
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done

From: Richard Stallman <address@hidden>
Reply-To: address@hidden
To: "David L" <address@hidden>
CC: address@hidden
Subject: Re: FW: default buffer-enable-undo
Date: Sun, 17 Sep 2006 11:12:50 -0400

I can't reproduce the problem with today's build.
In order for C-I as the first character to actually
insert a tab, I have to visit a file (emacs -q ~/foo).
When I do this, undo works properly and deletes the space.

I can't go firther without a precise test case.  Please read the Bugs
section in the Emacs manual, which provides guidelines on how to write
a bug report to give us the necessary information so we can fix the

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