From: Stefan Kangas <stefan@marxist.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Phil Sainty <psainty@orcon.net.nz>, 23861-done@debbugs.gnu.org
Subject: bug#23861: 25.1.50; fast-but-imprecise-scrolling: What does "somewhat inaccurate" mean?
Date: Mon, 14 Oct 2019 14:35:25 +0200 [thread overview]
Message-ID: <CADwFkm=YuFf8HnNoVrY80nfrNwTqztjYVUJgFuQLuDU0-+6=gQ@mail.gmail.com> (raw)
In-Reply-To: <57727584.3060502@orcon.net.nz>
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Phil Sainty <psainty@orcon.net.nz>
>> Date: Wed, 29 Jun 2016 01:03:00 +1200
>>
>> It's unclear to me what the following excerpt from the docstring
>> for the `fast-but-imprecise-scrolling' variable actually means:
>>
>> > Note that this optimization can cause the portion of the buffer
>> > displayed after a scrolling operation to be somewhat inaccurate.
>>
>> "somewhat inaccurate" is incredibly vague if you don't already
>> know what it means.
>
> It means that what's on the screen might not reflect what's in the
> buffer.
>
> It's hard to tell anything more specific, since which redisplay
> optimizations will be taken in each case depends on many factors on
> which the user has no control.
>
>> Does it mean that the position scrolled to might be further (or
>> less far) than it would have been otherwise?
>
> It could.
>
>> Does it mean that the font-locking may be incomplete or incorrect?
>
> It could.
>
>> Does it mean that the buffer text may appear corrupted?!
>
> It could, if faces change the font size.
That was 3 years ago. It doesn't look like there is anything more to do
here, so I'm closing this bug report.
Please reopen the bug if that's incorrect.
Best regards,
Stefan Kangas
prev parent reply other threads:[~2019-10-14 12:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-15 22:20 33% speed up in CC Mode scrolling Alan Mackenzie
2016-06-16 0:41 ` John Wiegley
2016-06-16 1:02 ` Clément Pit--Claudel
2016-06-16 23:15 ` Richard Stallman
2016-06-17 15:38 ` Alan Mackenzie
2016-06-19 17:21 ` Richard Stallman
2016-06-20 0:44 ` Stefan Monnier
2016-06-20 23:04 ` Richard Stallman
2016-06-21 0:47 ` Stefan Monnier
2016-06-22 6:34 ` Richard Stallman
2016-06-27 6:31 ` martin rudalics
2016-06-27 12:49 ` Alan Mackenzie
2016-06-27 16:10 ` martin rudalics
2016-06-27 17:28 ` martin rudalics
2016-06-27 18:44 ` Alan Mackenzie
2016-06-28 8:23 ` martin rudalics
2016-06-28 10:27 ` Alan Mackenzie
2016-06-27 16:28 ` Eli Zaretskii
2016-06-27 16:57 ` martin rudalics
2016-06-27 19:31 ` Eli Zaretskii
2016-06-28 8:23 ` martin rudalics
2016-06-28 9:18 ` Alan Mackenzie
2016-06-28 13:03 ` bug#23861: 25.1.50; fast-but-imprecise-scrolling: What does "somewhat inaccurate" mean? Phil Sainty
2016-06-28 16:14 ` Eli Zaretskii
2019-10-14 12:35 ` Stefan Kangas [this message]
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