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bug#32839: 27.0.50; recenter doesn't redisplay
From: |
Eli Zaretskii |
Subject: |
bug#32839: 27.0.50; recenter doesn't redisplay |
Date: |
Tue, 25 Sep 2018 23:08:04 +0300 |
> From: Juri Linkov <juri@linkov.net>
> Date: Tue, 25 Sep 2018 22:11:59 +0300
>
> 1. Eval:
>
> (setq recenter-redisplay t)
>
> (add-to-list 'window-scroll-functions
> (lambda (window display-start)
> (message "window-scroll-functions %S %S %S"
> window (window-buffer window) display-start)))
>
> 2. Open *Messages* in adjacent window with 'C-h e'
>
> 3. Put point in *scratch* preferably not on the first line
>
> 4. Type 'C-l' (recenter-top-bottom) with different arguments, e.g.
> C-0 C-l
> C-1 C-l
> C-2 C-l
> etc.
>
> The *Messages* buffer is not refreshed to show new logged messages
> from the calls of the window-scroll-functions.
>
> This means that C-l (recenter-top-bottom) doesn't redisplay the frame -
> which is strange since it calls 'recenter' with non-nil arg REDISPLAY.
'recenter' doesn't redisplay the frame, it only redisplays the window
which you recenter.
> 5. Typein *scratch* again: C-l C-l C-l
> only when C-l puts point to the center of the window,
> the *Messages* buffer gets redisplayed (but then for some reason
> window-scroll-functions is not called in this case).
That's a feature: you set recenter-redisplay to t, which causes a
complete redraw of the frame when you type C-l. And
window-scroll-functions aren't called when the window is not scrolled.
Bottom line: I'm unsure what is a bug here, if any.
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/25
- bug#32839: 27.0.50; recenter doesn't redisplay,
Eli Zaretskii <=
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/25
- bug#32839: 27.0.50; recenter doesn't redisplay, Eli Zaretskii, 2018/09/26
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/26
- bug#32839: 27.0.50; recenter doesn't redisplay, Eli Zaretskii, 2018/09/27
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/27
- bug#32839: 27.0.50; recenter doesn't redisplay, Eli Zaretskii, 2018/09/28
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/29
- bug#32839: 27.0.50; recenter doesn't redisplay, Eli Zaretskii, 2018/09/30
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/30
- bug#32839: 27.0.50; recenter doesn't redisplay, Juri Linkov, 2018/09/29