* bug#45848: 27.1; Buffers menu opens wrong buffer
@ 2021-01-13 23:13 Joseph Coffland via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-01-14 7:40 ` martin rudalics
0 siblings, 1 reply; 3+ messages in thread
From: Joseph Coffland via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-01-13 23:13 UTC (permalink / raw)
To: 45848
In recent versions of GTK Emacs with multiple frames open, selecting the
top buffer from the Buffers menu often opens the wrong buffer. Upon
returning to the Buffers menu, the top item has changed to the one that
actually opened. Selecting the desired file from the menu again opens the
correct file as expected.
The Buffers menu on each frame appears to be the same but in reality the
order is different. When one frame is in focus but you click on the
Buffers menu of an unfocused frame it will show the Buffers for the
focused menu. If you close the menu and reclick, the focus will have
changed and it will show the correct Buffers menu.
I belive the problem is that the Buffers menu opens before the frame focus
changes causing the wrong Buffers list to display for the frame.
Thanks,
Joseph
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^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#45848: 27.1; Buffers menu opens wrong buffer
2021-01-13 23:13 bug#45848: 27.1; Buffers menu opens wrong buffer Joseph Coffland via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2021-01-14 7:40 ` martin rudalics
2022-05-09 14:17 ` Lars Ingebrigtsen
0 siblings, 1 reply; 3+ messages in thread
From: martin rudalics @ 2021-01-14 7:40 UTC (permalink / raw)
To: joseph, 45848
> In recent versions of GTK Emacs with multiple frames open, selecting the
> top buffer from the Buffers menu often opens the wrong buffer. Upon
> returning to the Buffers menu, the top item has changed to the one that
> actually opened. Selecting the desired file from the menu again opens the
> correct file as expected.
>
> The Buffers menu on each frame appears to be the same but in reality the
> order is different. When one frame is in focus but you click on the
> Buffers menu of an unfocused frame it will show the Buffers for the
> focused menu. If you close the menu and reclick, the focus will have
> changed and it will show the correct Buffers menu.
>
> I belive the problem is that the Buffers menu opens before the frame focus
> changes causing the wrong Buffers list to display for the frame.
I always disable the Buffers menu here so I can't tell whether there was
a noticeable change recently. The function responsible for providing
that menu ('menu-bar-update-buffers') uses the global buffer list - not
the one specific for that menu bar's frame. This means that
conceptually the menu will show the same list regardless from where you
invoke it unless that invoking step itself changes the global buffer
list beforehand. Now selecting a frame is one way to change it, popping
up a menu from the menu bar should not change it.
So the first issue we'd have to resolve is what the "correct Buffers
menu" is. The second issue, and that is one that should never happen,
is that apparently Emacs switches to another buffer than the one whose
name you clicked on. Maybe someone else has an idea how such a thing
could occur in practice.
martin
^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#45848: 27.1; Buffers menu opens wrong buffer
2021-01-14 7:40 ` martin rudalics
@ 2022-05-09 14:17 ` Lars Ingebrigtsen
0 siblings, 0 replies; 3+ messages in thread
From: Lars Ingebrigtsen @ 2022-05-09 14:17 UTC (permalink / raw)
To: martin rudalics; +Cc: 45848, joseph
martin rudalics <rudalics@gmx.at> writes:
>> In recent versions of GTK Emacs with multiple frames open, selecting the
>> top buffer from the Buffers menu often opens the wrong buffer. Upon
>> returning to the Buffers menu, the top item has changed to the one that
>> actually opened. Selecting the desired file from the menu again opens the
>> correct file as expected.
I'm unable to reproduce this, but:
>> I belive the problem is that the Buffers menu opens before the frame focus
>> changes causing the wrong Buffers list to display for the frame.
When clicking on the Buffers menu without selecting the frame first, the
menu first displays the buffers in one order, and then
menu-bar-update-buffers is triggered, and then the order rearranges
itself, which is disturbing.
So menu-bar-update-hook is called too late -- after opening the menu
instead of before. (Or perhaps called at the right time, but before the
frame is selected...)
> This means that
> conceptually the menu will show the same list regardless from where you
> invoke it unless that invoking step itself changes the global buffer
> list beforehand. Now selecting a frame is one way to change it, popping
> up a menu from the menu bar should not change it.
>
> So the first issue we'd have to resolve is what the "correct Buffers
> menu" is.
I'm not sure, either. It just lists things in `buffer-list' order, and
selecting a different frame will select a new window, and therefor a new
buffer, so switching frames will alter the order...
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-05-09 14:17 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-01-13 23:13 bug#45848: 27.1; Buffers menu opens wrong buffer Joseph Coffland via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-01-14 7:40 ` martin rudalics
2022-05-09 14:17 ` Lars Ingebrigtsen
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