Re: Confused by y-or-n-p

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Re: Confused by y-or-n-p

From: Eli Zaretskii

Subject: Re: Confused by y-or-n-p

Date: 2020年12月25日 13:46:42 +0200

> From: Juri Linkov <juri@linkov.net>
> Cc: rudalics@gmx.at, emacs-devel@gnu.org, rms@gnu.org
> Date: 2020年12月25日 11:23:45 +0200
>
> >> (defun minibuffer-lock ()
> >> (when (active-minibuffer-window)
> >> (select-window (active-minibuffer-window))))
> >>
> >> (add-hook 'post-command-hook #'minibuffer-lock)
> >
> > Would something like that work to give users an option discussed in
> > this thread for y-or-n-p? If so, can you please show a patch for
> > that?
>
> I thought that others wanted this to affect all minibuffer commands.
> How would it be possible to customize this behavior only for a subset
> of commands?
Can't we add to post-command-hook only in the commands from that
subset, and remove it when leaving the minibuffer?
> >> One complication is that currently yes-or-no-p is implemented in C,
> >> so using a new user option in it is not straightforward.
> >
> > What are the difficulties? You can call Lisp from C, given an option,
> > which is what I think Martin asked for.
>
> In Lisp it would be simpler to add to the beginning of 'yes-or-no-p':
>
> (if use-y-or-n-p
> (y-or-n-p prompt)
You can do the same, almost literally, in C, can't you?

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