bug#47150: 28.0.50; Incorrect major-mode in minibuffer

[Alan Mackenzie <acm@muc.de>]

Hello, Sheng.

On Mon, Mar 15, 2021 at 16:58:04 -0500, Sheng Yang wrote:
> Hi Alan,

> Thanks for the detailed explanation, everything makes sense now. I
> still would like to clarify the following

> > As you say, there is (minibufferp).  What is wrong with that?

> > That does indeed suggest we really want a minibuffer-mode, rather than
> > just fundamental-mode.  But surely, the parenthesis pairing will be
> > dependant on the sort of text you're typing into the minibuffer, so it
> > can't really be connected with, say, minibuffer-mode.

> > Sorry, I don't understand what you mean, here.  How will the use of
> > (minibufferp) prevent anything else?

> I am not suggesting anything wrong with (minibufferp). What I have in
> mind is that it would be better if there is a mode for the minibuffer,
> so that existing packages can still use *-modes, *-global-modes,
> *-inhibit-modes, etc. to decide whether to enable or disable some
> functionalities. I checked the several packages I mentioned, they
> either compare major-mode with minibuffer-inactive-mode directly, or
> use some *-modes variable that checks the major-mode. Their
> maintainers' life will be easier comparing to the case where only
> (minibufferp) is available and they are forced to make a corner case
> for the minibuffer.

OK, thanks, I understand now.

> > I hope my description in this post is satisfactory.
> Yes, crystal clear!

> > So, a quick summary: (i) the change in the minibuffer's major mode
> > to fundamental-mode was intended; (ii) there may be some problems in
> > some packages because of this; (iii) we aren't yet in agreement on
> > how to proceed with this bug report.

> (i)(ii) agreed.
> (iii), I am mostly in support of removing minibuffer-inactive-mode and
> minibuffer-inactive-mode-map, and give the minibuffer a proper mode.
> This way, the maintainers' life will be easier. Another option is
> still remove minibuffer-inactive-mode and
> minibuffer-inactive-mode-map, but keep minibuffer in fundamental mode.
> What do you think?

After some thought, I think the best thing would be to leave
minibuffer-inactvie-mode as it is, and create a new mode for an active
minibuffer called `minibuffer-mode'.  That would enable minor modes to
specify minibuffer-mode in lists of modes they handle, or don't handle,
as you say.

This shouldn't be too much work.  What do you say?

> Sheng Yang(杨圣), PhD
> Computer Science Department
> University of Maryland, College Park
> E-mail: styang@fastmail.com
> E-mail (old but still used): yangsheng6810@gmail.com

-- 
Alan Mackenzie (Nuremberg, Germany).