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bug#3033: 23.0.92; Try to auto fix whitespace loss? (y/n)

From: Leo
Subject: bug#3033: 23.0.92; Try to auto fix whitespace loss? (y/n)
Date: Sat, 18 Apr 2009 14:24:59 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux)

On 2009-04-18 02:55 +0100, Chong Yidong wrote:
>> When I try to open by drag and drop the attached file, Emacs keep asking
>> me 'Try to auto fix whitespace loss? (y/n)'. No matter y or n, the
>> dialogue will appear again and again until I kill the buffer.
>> I enable whitespace mode using (add-hook 'diff-mode-hook
>> 'whitespace-mode).
> I can't reproduce this.  Do you see the bug with a .emacs containing
> only `(add-hook 'diff-mode-hook 'whitespace-mode)' and nothing else?

I have used edebug and error-on-quit to trace the culprit and find a
reproducible recipe. It turns out it has nothing to do with whitespace.

1. emacs -q
2. M-x which-func-mode
3. C-x C-f emacs-gnus-ticked-doc.patch

You should be able to see a dialogue pop up as in this screenshot

In my experience, I have found which-func-mode to be intrusive and
unreliable. So I guess I will have to disable it to avoid further

Best wishes,
.:  Leo  :.  [ sdl.web AT gmail.com ]  .: I use Emacs :.

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