From: Joost Kremers <joostkremers@fastmail.fm>
To: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Is it ok to use (redisplay), or should this be left to the experts?
Date: Thu, 10 Jan 2019 21:43:44 +0100 [thread overview]
Message-ID: <871s5ktf9b.fsf@fastmail.fm> (raw)
Hi,
I have a package for distraction-free writing[1], which, among
other things, activates full screen and sets the text width to a
user-defined value. There is an option to set the text width as a
percentage of (window-total-width), which is now causing an issue,
as reported by a user.[2]
The problem is that although full screen is activated before
calculating the text width, (window-total-width) still reports the
window width that existed before full screen was activated. This
seems to be some sort of race condition, because adding (sleep-for
2) before calling (window-total-width) solves the issue.
However, I don't want to force a one or two second wait on all my
users just because in some conditions, on some system, there may
be a race condition. (I can't reproduce the issue on my own
computer, for example).
It seems that a call to (redisplay) also does the trick, but I'm
hesitant to add this, because, well, I'm not sure why, exactly,
it's just that I'm not entirely sure when, i.e., in what
circumstances, (redisplay) is meant to be used, what side effects
to watch out for (in any), etc.
So I guess what I'm asking is whether someone can tell me whether
(redisplay) is the right way to deal with this issue, or whether
there is a better way. Or perhaps the user is SOL and needs to do
some local configuration to get things to behave?
TIA
Joost
Footnotes:
[1] https://github.com/joostkremers/writeroom-mode
[2] https://github.com/joostkremers/writeroom-mode/issues/48
--
Joost Kremers
Life has its moments
next reply other threads:[~2019-01-10 20:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 20:43 Joost Kremers [this message]
2019-01-10 22:02 ` Is it ok to use (redisplay), or should this be left to the experts? Stefan Monnier
2019-02-11 23:27 ` Joost Kremers
2019-02-12 3:58 ` Stefan Monnier
2019-02-12 8:06 ` Joost Kremers
2019-02-12 14:45 ` Stefan Monnier
2019-01-11 7:24 ` Eli Zaretskii
2019-02-11 23:43 ` Joost Kremers
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