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From: Alan Mackenzie <acm@muc.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: rudalics@gmx.at, 56305@debbugs.gnu.org, monnier@iro.umontreal.ca,
	acm@muc.de
Subject: bug#56305: 29.0.50; 'yes-or-no-p' deselects minibuffer frame
Date: Tue, 5 Jul 2022 17:09:48 +0000	[thread overview]
Message-ID: <YsRwXEym1mBWgxuD@ACM> (raw)
In-Reply-To: <83zghn7ckd.fsf@gnu.org>

Hello, Eli.

On Tue, Jul 05, 2022 at 19:24:02 +0300, Eli Zaretskii wrote:
> > Date: Tue, 5 Jul 2022 15:59:00 +0000
> > Cc: rudalics@gmx.at, monnier@iro.umontreal.ca, 56305@debbugs.gnu.org
> > From: Alan Mackenzie <acm@muc.de>

> > > > After typing C-x C-c, rather than exiting, this particular Emacs
> > > > prompts:

> > > >     "Active processes exist; kill them and exit anyway? (yes or no) "

> > > > on MBF and it opens a window *Process List* on NF.

> > > Sounds right to me: the frame where Emacs presents some important
> > > information has focus.  If you think this is wrong, please tell why.

> > Well, I don't have a firm opinion on this, but yes-or-no-p is an active
> > function, here.  We always leave the minibuffer as the selected window
> > for this function, certainly when we've a normal minibuffer in the frame.
> > Why should it be different when we've got a minibuffer-only frame?

> > Also, the mechanism by which NF gets the focus in the bug scenario
> > appears to be random.  When the focus starts out in NF and we do C-x C-c,
> > the focus moves to MBF.  This is inconsistent.

> > The place where the randomness takes effect is the 

> >     Fredirect_frame_focus (gfocus, frame);

> > in do_switch_frame I drew attention to yesterday.

> Do you have a suggestion for a change there to improve the behavior?

As yet, no.  I am still having trouble understanding the code well
enough.

But there's at least one interesting aspect.  In the Elisp manual page
"Input Focus" appears the following:

       Lisp programs can switch frames temporarily by calling the function
    `select-frame'.  This does not alter the window system's concept of
    focus; rather, it escapes from the window manager's control until that
    control is somehow reasserted.

This is sadly not true - the functions called by that
Fredirect_frame_focus in do_switch_frame do indeed change the window
system's focus - in particular x_frame_rehighlight (in xterm.c).  If we
were to change the code rather than the manual here, I think a fair bit
of confusion would vanish.  But this isn't something for the release
branch.  ;-)

-- 
Alan Mackenzie (Nuremberg, Germany).





  reply	other threads:[~2022-07-05 17:09 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-29 17:54 bug#56305: 29.0.50; 'yes-or-no-p' deselects minibuffer frame martin rudalics
2022-06-29 19:10 ` Eli Zaretskii
2022-06-30 10:35   ` Alan Mackenzie
2022-06-30 20:32   ` Alan Mackenzie
2022-07-02 11:38   ` Alan Mackenzie
2022-07-03  8:16     ` martin rudalics
2022-07-03 16:09       ` Alan Mackenzie
2022-07-03 16:17         ` Eli Zaretskii
2022-07-04 19:10           ` Alan Mackenzie
2022-07-04 19:21             ` Eli Zaretskii
2022-07-04 19:43               ` Alan Mackenzie
2022-07-05  2:29                 ` Eli Zaretskii
2022-07-05 15:59                   ` Alan Mackenzie
2022-07-05 16:24                     ` Eli Zaretskii
2022-07-05 17:09                       ` Alan Mackenzie [this message]
2022-07-06 17:04                       ` Alan Mackenzie
2022-07-06 17:29                         ` Eli Zaretskii
2022-07-06 18:16                           ` Alan Mackenzie
2022-07-06 18:34                             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-06 18:58                             ` Andreas Schwab
2022-07-06 19:05                               ` Alan Mackenzie
2022-07-06 19:09                                 ` Andreas Schwab
2022-07-06 19:22                                   ` Alan Mackenzie
2022-07-07 17:25                                   ` Alan Mackenzie
2022-07-07 18:57                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-08 21:03                                       ` Alan Mackenzie
2022-07-09  2:15                                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-07  7:55                             ` martin rudalics
2022-07-07  9:12                               ` Alan Mackenzie
2022-07-08  7:01                                 ` martin rudalics
2022-07-08 10:55                                   ` Alan Mackenzie
2022-07-08 11:55                                     ` Eli Zaretskii
2022-07-08 18:31                                     ` Alan Mackenzie
2022-07-09  8:36                                       ` martin rudalics
2022-07-08 21:45                                     ` Gregory Heytings
2022-07-09  8:35                                     ` martin rudalics
2022-07-09 10:57                                       ` Alan Mackenzie
2022-07-10  8:07                                         ` martin rudalics
2022-07-10 11:34                                           ` Alan Mackenzie
2022-07-10 11:47                                             ` Eli Zaretskii
2022-07-10 12:41                                               ` Alan Mackenzie
2022-07-10 13:01                                                 ` Eli Zaretskii
2022-07-10 16:13                                             ` Drew Adams
2022-07-10 16:55                                               ` Alan Mackenzie
2022-07-11  7:45                                             ` martin rudalics
2022-07-11 11:12                                               ` Eli Zaretskii
2022-07-12  7:33                                                 ` martin rudalics
2022-07-12 16:02                                                   ` Eli Zaretskii
2022-07-11 16:22                                               ` Alan Mackenzie
2022-07-11 16:43                                                 ` Eli Zaretskii
2022-07-11 17:15                                                   ` Alan Mackenzie
2022-07-11 17:33                                                     ` Eli Zaretskii
2022-07-11 17:34                                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-11 20:09                                                       ` Alan Mackenzie
2022-07-11 17:06                                                 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-11 20:01                                                   ` Alan Mackenzie
2022-07-12  7:35                                                 ` martin rudalics
2022-07-12 14:56                                                   ` Drew Adams
2022-07-16  7:06                                                     ` martin rudalics
2022-07-16 20:34                                                   ` Alan Mackenzie
2022-07-18  7:36                                                     ` martin rudalics
2022-07-18 14:44                                                       ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-19  8:09                                                         ` martin rudalics
2022-07-19 16:04                                                           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-16 23:39                                                   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-17 11:29                                                     ` Alan Mackenzie
2022-07-17 14:03                                                       ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-17 15:06                                                         ` Alan Mackenzie
2022-07-18  7:37                                                     ` martin rudalics
2022-07-18 14:58                                                       ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-18 15:58                                                         ` Eli Zaretskii
2022-07-18 16:12                                                           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-18 16:50                                                             ` Eli Zaretskii
2022-07-19 20:48                                                               ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-20 12:17                                                                 ` Eli Zaretskii
2022-07-20 14:54                                                                   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-20 16:02                                                                     ` Eli Zaretskii
2022-07-21 15:07                                                                       ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-21 15:58                                                                         ` Eli Zaretskii
2022-07-19  8:09                                                         ` martin rudalics
2022-07-07 15:54                           ` Alan Mackenzie
2022-07-04 19:46             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-04 19:59               ` Alan Mackenzie

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