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bug#14838: 24.3.50; repeating next-line or previous-line is broken
From: |
Eli Zaretskii |
Subject: |
bug#14838: 24.3.50; repeating next-line or previous-line is broken |
Date: |
Thu, 11 Jul 2013 23:25:05 +0300 |
> From: Stephen Berman <stephen.berman@gmx.net>
> Cc: jan.h.d@swipnet.se, 14838@debbugs.gnu.org
> Date: Thu, 11 Jul 2013 22:04:07 +0200
>
> > I don't believe the aref part. I think the real culprit is font-info.
> > Let's conduct an experiment: if you modify default-font-height so that
> > it always just calls frame-char-height, does the problem go away?
>
> Yep, that it does. And no trace messages are emitted.
Thanks, I will come up with a change that will refrain from calling
font-info unless it's strictly necessary.
> So it seems some fonts are sensitive to this distinction and others
> aren't. What is the crucial difference?
Not sure, but I saw that the implementation of font-info actually
opens the font file, so there's probably some non-trivial processing
involved in that. And likewise for font-face -- it calls the font
back-end.
> There are no trace messages while scrolling is normal; only after
> redisplay stops (with >90% CPU load) and then recovers do the messages
> appear, and they are all as above, with py=0.
Ah, OK, now everything is clear.
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Stephen Berman, 2013/07/10
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Eli Zaretskii, 2013/07/10
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Stephen Berman, 2013/07/11
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Eli Zaretskii, 2013/07/11
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Stephen Berman, 2013/07/11
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Eli Zaretskii, 2013/07/11
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Stephen Berman, 2013/07/11
- bug#14838: 24.3.50; repeating next-line or previous-line is broken,
Eli Zaretskii <=
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Eli Zaretskii, 2013/07/12
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Stephen Berman, 2013/07/12
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Eli Zaretskii, 2013/07/12
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Eli Zaretskii, 2013/07/13
- bug#14838: 24.3.50; repeating next-line or previous-line is broken, Stephen Berman, 2013/07/13