GNU bug report logs - #16526
24.3.50; scroll-conservatively & c-mode regression

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Message #19 received at 16526 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: 16526 <at> debbugs.gnu.org
Cc: Alan Mackenzie <acm <at> muc.de>
Subject: Re: bug#16526: 24.3.50; scroll-conservatively & c-mode regression
Date: Sat, 25 Jan 2014 10:23:18 +0100

>> With current trunk and emacs -Q evaluating the following form takes more
>> than two minutes here with builds on Windows and GNU/Linux:
>
>> (progn
>>   (setq scroll-conservatively 101)
>>   (find-file (concat source-directory "src/xdisp.c"))
>>   (end-of-buffer)
>>   (sit-for 3)
>>   (beginning-of-buffer))
>
>> It used to take about 10 seconds before revision 116070.
>
> It's taking me about 7 seconds, on an Emacs version whose latest applied
> revision is 116070.
>
> Quick update to current (latest revision 116146), and rebuild .......
>
> It's still taking me about 7 seconds.

Updated to revision 116153, bootstrapped (at least one hour on my
machine), still taking more than two minutes here.

> As far as I can see, you haven't
> installed your temporary patch to syntax.c.

I'm afraid I have to do that now.

> So, I haven't been able to
> reproduce the problem yet.
>
> Is there something more subtle I'm missing?

Is there something more subtle I'm missing?

> [P.S. isn't it good that we can use revision numbers to identify
> approximate ages of repository states. ;-]

It didn't help so far in this case ...

martin

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