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bug#60411: 29.0.60; minibuffer-next-completion skips first candidate whe
From: |
Eli Zaretskii |
Subject: |
bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil |
Date: |
Fri, 06 Jan 2023 13:40:16 +0200 |
> Date: Fri, 06 Jan 2023 09:01:08 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: kahatlen@gmail.com, 60411@debbugs.gnu.org, monnier@iro.umontreal.ca,
> juri@linkov.net
>
>
> >>>> Stefan and Eli, do you agree with that conclusion?
> >>>
> >>> I admit that I've lost the line of reasoning here (too much of the
> >>> previous context is being elided, forcing me to re-read the entire
> >>> discussion). Which code is proposed for the release branch, and how
> >>> will Emacs behave with that code in this particular use case?
> >>
> >> It's this patch. It adds an invisible empty line at the beginning of
> >> *Completions* when completions-header-format is not a string (in
> >> particular, nil) or an empty string.
> >
> > What is the significance of these two special values of
> > completions-header-format? Is it that you want to test whether the
> > first candidates starts at buffer position 1 in the *Completions*
> > buffer? Then why not test for that explicitly?
> >
>
> When completions-header-format is nil or an empty string, no completion
> header "NNN possible completions:\n" is inserted in *Completions*.
> Because of this, minibuffer-next-completion (bound to M-<down> by
> default), which is supposed to select the first completion when it is
> called for the first time, erroneously selects the second completion.
> The fact that "something" (the completion header and/or the help text
> "Click on a completion to select it...") must exist in *Completions*
> before the first completion candidate is more or less hardcoded in the
> logic of minibuffer-next-completion.
Then why not change that logic in minibuffer-next-completion to be
smarter about this?
What you suggest is too ad-hoc-ish, and any future change to the
possible values of completions-header-format will risk breaking the
condition you propose.
Or maybe what minibuffer-next-completion does should be rethought?
Why does it assume that the first candidate is on the second line?
what if it's on the third line instead?
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Stefan Monnier, 2023/01/01
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/01
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Stefan Monnier, 2023/01/01
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/01
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Juri Linkov, 2023/01/05
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/05
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Eli Zaretskii, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Eli Zaretskii, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil,
Eli Zaretskii <=
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Eli Zaretskii, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Eli Zaretskii, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Eli Zaretskii, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Eli Zaretskii, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Stefan Monnier, 2023/01/06
- bug#60411: 29.0.60; minibuffer-next-completion skips first candidate when completions-header-format and completion-show-help are nil, Gregory Heytings, 2023/01/06