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Re: Contiguous redisplay of the menu and beeps

From: Stephen Berman
Subject: Re: Contiguous redisplay of the menu and beeps
Date: Sat, 26 May 2007 16:22:37 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1.50 (gnu/linux)

On Sat, 26 May 2007 16:12:04 +0200 Stephen Berman <address@hidden> wrote:

> On Sat, 26 May 2007 15:41:27 +0200 martin rudalics <address@hidden> wrote:
>>>  > In GNU Emacs 22.0.990 on Windows, the following operation causes
>>>  > contiguous redisplay of the menu and beeps.  And Emacs doesn't
>>>  > accept any operations for a while.
>>>  >
>>>  >   emacs -q
>>>  >   M-x html-mode ;; in the scratch buffer
>>>  >   M-x column-number-mode
>>>  >   <html></html>
>>>  >   C-u 8 C-b ;; move back the cursor on `>' of "<html>"
>>>  >   C-c C-i   ;; runs the command sgml-tags-invisible
>>> In fact these are two problems: To solve the first one could specbind
>>> Vinhibit_point_motion_hooks to Qt before calculating the column number.
>>> The second is that sgml-mode shouldn't scan list forwards before a ">".
>> Could someone test whether this happens on non-Windows OSs too?  AFAICT
>> the bug is (1) caused by repeatedly running a point-entered hook (but I
>> can't detect whether it is run by something in redisplay) and (2) hence
>> could be related to the table cell menu bug reported earlier by Tak Ota.
> It happens for me on GNU Emacs (i686-pc-linux-gnu, GTK+
> Version 2.10.6) of 2007-04-30

That is, I get continuous beeping and Emacs consumes the CPU, but I
don't see menu redisplay.  And in fact, I can stop the beeping and CPU
consumption by clicking on clicking the SGML menu and toggling tag
visibility.  Clicking on the HTML menu stops the beeping but it
resumes when the menu is closed.  Clicking on the other menues does
not seem to stop the beeping.  I'm not sure these observations are
reliably reproducible.

Steve Berman

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