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Re: scroll-up makes no progress on overtall lines
From: |
David Kastrup |
Subject: |
Re: scroll-up makes no progress on overtall lines |
Date: |
Wed, 20 Jul 2005 13:11:30 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
address@hidden (Kim F. Storm) writes:
> David Kastrup <address@hidden> writes:
>
>> This bug report will be sent to the Free Software Foundation,
>> not to your local site managers!
>> Please write in English if possible, because the Emacs maintainers
>> usually do not have translators to read other languages for them.
>>
>> Your bug report will be posted to the address@hidden mailing list.
>>
>> Please describe exactly what actions triggered the bug
>> and the precise symptoms of the bug:
>>
>> Hi Kim, when I use preview-latex to generate a line that is taller
>> than the buffer and then repeatedly press <next>, the screen position
>> goes through a somewhat strange circular pattern, but never manages to
>> scroll through it. scroll-down, previous-line and next-line all
>> manage to make it through the image, in contrast.
>
> I suppose that line contains an image as the last thing.
Excepting the newline character.
> If that line is the _last_ visible line in the buffer,
Not at all.
> you see some jumpy effects in next when it reaches the last part of
> that line.
>
> I looked at it before, and found that it is a bad interaction between
> placing the image text property on the last NL in the buffer and the
> way eolp and eobp works.
>
> If it happens in the middle of a buffer, I would like to know more
> about how to reproduce it.
Load circ.tex from preview-latex, do C-c C-p C-d wait until it
finishes, then do C-x 2 and drag the modeline up until the top window
has maybe 1/4 of the screen estate (10 lines or so). Go to the top of
the file, press <next> (Page-Down) and let auto-repeat cater for the
rest. You will get stuck at a larger image in the middle of the
buffer.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum