From: martin rudalics <rudalics@gmx.at>
To: Juri Linkov <juri@linkov.net>
Cc: Davor Rotim <drot@firemail.cc>, 39822@debbugs.gnu.org
Subject: bug#39822: 27.0.90; Cannot set *Completions* buffer height using display-buffer-alist
Date: Sun, 15 Mar 2020 18:49:35 +0100 [thread overview]
Message-ID: <7581d32e-f8b9-0d66-b496-b2584ffb65be@gmx.at> (raw)
In-Reply-To: <8736aaedgb.fsf@mail.linkov.net>
> These calls should remain in 'window--display-buffer' to adjust the
> window height afterwards.
Yes.
>> But what if a function like 'dired-format-columns-of-files' wanted to
>>
>> (1) know the width of the window used for displaying the buffer,
>
> 'dired-format-columns-of-files' is called when the window
> is already displayed, so it can find the width of the window,
> and it uses 'completion--insert-strings' for that, see below.
Does it know the window for sure? Always think of the case where the
buffer is already displayed in some other window.
>> (2) according to that (presumably fixed) width adjust columns, establish
>> a maximum width of buffer lines or do something else width related,
>
> Same as above.
>
>> (3) leave it to 'window--display-buffer' to adjust the window height
>> afterwards?
>
> It already allows 'window--display-buffer' to adjust the window height
> afterwards in the previous patch.
>
>> And be able to do (1)-(3) in the orthogonal direction, that is, base (2)
>> on a presumably fixed window height?
>
> You mean to not allow adjusting the window height afterwards?
> Then the call of 'display-buffer' should be without alist entries
> 'window-height' and 'preserve-size'.
We have to be always prepared for the case that a split happens in the
orthogonal direction.
> The current implementation doesn't supply the window, and
> 'dired-format-columns-of-files' and 'minibuffer-completion-help'
> use 'completion--insert-strings':
>
> (window (get-buffer-window (current-buffer) 0))
That's precisely what I'm afraid of (and it happens in a dozen other
cases in our code base as well, IIRC). Better make sure now that we
always act on the window returned by 'display-buffer'.
> (wwidth (if window (1- (window-width window)) 79))
>
> Do you propose to rewrite 'completion--insert-strings' for accept a new
> argument 'window'? Or to rely on the fact that the displayed window should
> be already selected by its caller? Will this break backward-compatibility
> for packages that use it?
Maybe it's overkill but I'd give 'completion--insert-strings' an
additional window argument.
martin
next prev parent reply other threads:[~2020-03-15 17:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-28 14:05 bug#39822: 27.0.90; Cannot set *Completions* buffer height using display-buffer-alist Davor Rotim
2020-02-29 7:53 ` martin rudalics
2020-02-29 15:26 ` Davor Rotim
2020-02-29 16:05 ` martin rudalics
2020-02-29 21:10 ` Juri Linkov
2020-03-01 8:52 ` martin rudalics
2020-03-01 23:29 ` Juri Linkov
2020-03-03 14:40 ` martin rudalics
2020-03-03 23:06 ` Juri Linkov
2020-03-04 17:30 ` martin rudalics
2020-03-04 23:58 ` Juri Linkov
2020-03-05 9:13 ` martin rudalics
2020-03-05 23:43 ` Juri Linkov
2020-03-09 9:02 ` martin rudalics
2020-03-12 22:54 ` Juri Linkov
2020-03-13 9:38 ` martin rudalics
2020-03-14 23:24 ` Juri Linkov
2020-03-15 17:49 ` martin rudalics [this message]
2020-03-15 23:47 ` Juri Linkov
2020-03-16 9:24 ` martin rudalics
2020-03-28 23:36 ` Juri Linkov
2020-03-29 9:10 ` martin rudalics
2020-03-29 22:57 ` Juri Linkov
2020-03-30 22:53 ` Juri Linkov
2020-03-31 8:38 ` martin rudalics
2020-04-02 21:50 ` Juri Linkov
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