GNU bug report logs - #78815
31.0.50; completions truncated

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Message #38 received at 78815 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: m43cap <at> yandex.com
Cc: 78815 <at> debbugs.gnu.org
Subject: Re: bug#78815: 31.0.50; completions truncated
Date: Wed, 18 Jun 2025 19:22:26 +0300

> From: Colin Baxter <m43cap <at> yandex.com>
> Cc: 78815 <at> debbugs.gnu.org
> Date: Wed, 18 Jun 2025 17:13:30 +0100
> 
> >>>>> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
>     > What can I say? it doesn't work here, neither on MS-Windows nor on
>     > GNU/Linux, with this recipe:
> 
>     >   emacs -Q C-h f completion TAB TAB TAB TAB TAB
> 
>     > (I have to type TAB 5 times before I see the end of the buffer,
>     > which has 135 lines and shows 131 completions.)
> 
>     > Btw, it is strange that your screenshot shows the candidates which
>     > start from completion-auto-select (here the list starts with
>     > completion--cache-all-sorted-completions instead), and doesn't
>     > show the heading of the *Completions* buffer ("Click or type
>     > M-RET...").
> 
>     > Did I use a wrong recipe or something?
> 
> Perhaps I should give my steps in more detail:-
> 
> 1. cd ~/git/emacs <RET>
> 2. src/emacs -Q <RET>
> 3. C-h f <RET>

Step 3 gets me an error message: You didn’t specify a function symbol.

> 4. Enter completion but stop with the cursor immediately left of the
> letter n.
> 5. Press <TAB> once only.
> 6. The completion buffer appears with the button, as per the screenshot.
> 7. Press <TAB> again
> 8. All the completions appear and the button disappears.
> 
> I'm inclined to think this is not a bug.

If you mean the fact that the button disappears when you show the last
portion of candidates, then I might agree, but I'm not sure I
understand the purpose of this feature, since I need to scroll the
window to see the button.

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