* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
@ 2018-11-08 21:49 N. Jackson
2018-11-09 7:57 ` Eli Zaretskii
0 siblings, 1 reply; 10+ messages in thread
From: N. Jackson @ 2018-11-08 21:49 UTC (permalink / raw)
To: 33320
0. $ src/emacs -Q
1. C-h k C-mouse-3
Expected behaviour:
A help buffer describes whatever command it is that is bound to
C-mouse-3.
Observed behaviour:
A context menu pops up and in the echo area, "Describe the following
key, mouse click, or menu item: C-down-mouse-3-" is displayed. But then
one is stuck:
- If one hits ESC, the context menu disappears, "Quit" appears in the
echo area, and no help buffer is displayed.
- If one hits RET to accept the value in the prompt in the echo area,
annoyingly nothing happens at all, and one stays in the same stuck
state.
- If one clicks in the echo area to try to change "C-down-mouse-3-" to
"C-down-mouse-3", or just to be sure the RET goes to the minibuffer
not to the context menu, "Quit" appears in the echo area, and no help
buffer is displayed.
In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.26)
of 2018-10-24 built on moondust.localdomain
Repository revision: 00027ff9d0f646662458bdb47cc7e2214f439698
Windowing system distributor 'Fedora Project', version 11.0.11906000
System Description: Fedora 27 (Workstation Edition)
Configured using:
'configure 'CFLAGS=-O3 -g3 -gdwarf-4''
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS GLIB NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM THREADS LCMS2 GMP
Important settings:
value of $LANG: en_CA.UTF-8
value of $XMODIFIERS: @im=none
locale-coding-system: utf-8-unix
Major mode: Info
Minor modes in effect:
TeX-PDF-mode: t
diff-auto-refine-mode: t
pdf-occur-global-minor-mode: t
shell-dirtrack-mode: t
recentf-mode: t
display-battery-mode: t
display-time-mode: t
show-paren-mode: t
savehist-mode: t
save-place-mode: t
electric-pair-mode: t
desktop-save-mode: t
delete-selection-mode: t
cua-mode: t
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
temp-buffer-resize-mode: t
buffer-read-only: t
size-indication-mode: t
column-number-mode: t
line-number-mode: t
global-visual-line-mode: t
visual-line-mode: t
transient-mark-mode: t
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url-proxy url-privacy url-expand url-methods url-history url-cookie
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wheatgrass-theme paren savehist saveplace elec-pair desktop frameset
delsel cua-base cus-start cus-load mule-util tex-site ess-generics info
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url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs password-cache json map url-vars seq byte-opt gv bytecomp
byte-compile cconv epg epg-config subr-x cl-loaddefs cl-lib tooltip
eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel
term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode
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select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang
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hebrew greek romanian slovak czech european ethiopic indian cyrillic
chinese composite charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs
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base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)
Memory information:
((conses 16 1386961 63480)
(symbols 48 125483 1)
(strings 32 257397 11900)
(string-bytes 1 11204601)
(vectors 16 85749)
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^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-08 21:49 bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3 N. Jackson
@ 2018-11-09 7:57 ` Eli Zaretskii
2018-11-09 19:18 ` N. Jackson
2018-11-09 23:02 ` Richard Stallman
0 siblings, 2 replies; 10+ messages in thread
From: Eli Zaretskii @ 2018-11-09 7:57 UTC (permalink / raw)
To: N. Jackson; +Cc: 33320
> From: "N. Jackson" <nljlistbox2@gmail.com>
> Date: Thu, 08 Nov 2018 16:49:24 -0500
>
> 0. $ src/emacs -Q
> 1. C-h k C-mouse-3
>
> Expected behaviour:
>
> A help buffer describes whatever command it is that is bound to
> C-mouse-3.
I don't think we can do that with all toolkits, because once Emacs
pops up the menu, the toolkit has control.
In any case, C-mouse-3 is a kind of prefix key, and we never display
help for prefix keys, we always wait for the user to type the complete
key sequence, which in this case includes menu selection.
> Observed behaviour:
>
> A context menu pops up and in the echo area, "Describe the following
> key, mouse click, or menu item: C-down-mouse-3-" is displayed. But then
> one is stuck:
>
> - If one hits ESC, the context menu disappears, "Quit" appears in the
> echo area, and no help buffer is displayed.
>
> - If one hits RET to accept the value in the prompt in the echo area,
> annoyingly nothing happens at all, and one stays in the same stuck
> state.
>
> - If one clicks in the echo area to try to change "C-down-mouse-3-" to
> "C-down-mouse-3", or just to be sure the RET goes to the minibuffer
> not to the context menu, "Quit" appears in the echo area, and no help
> buffer is displayed.
You need to select one of the menu items by clicking on it, then you
will see the help for that item.
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-09 7:57 ` Eli Zaretskii
@ 2018-11-09 19:18 ` N. Jackson
2018-11-09 19:40 ` Drew Adams
2022-02-02 19:16 ` Lars Ingebrigtsen
2018-11-09 23:02 ` Richard Stallman
1 sibling, 2 replies; 10+ messages in thread
From: N. Jackson @ 2018-11-09 19:18 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 33320
At 09:57 +0200 on Friday 2018-11-09, Eli Zaretskii wrote:
>
> C-mouse-3 is a kind of prefix key, and we never display
> help for prefix keys, we always wait for the user to type the complete
> key sequence, which in this case includes menu selection.
Oh, I see. That makes sense, now that you say it!
Perhaps the documentation for `describe-key' should mention that? It
might say something about it displaying that final hyphen while it is
waiting for more input, when a complete key command has not yet been
entered for it to display help on.
> You need to select one of the menu items by clicking on it, then you
> will see the help for that item.
Right. I understand that now. [Although in this case I wasn't looking
for the documentation of one of the menu items, I was looking for the
documentation for whatever function pops up the menu itself.]
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-09 19:18 ` N. Jackson
@ 2018-11-09 19:40 ` Drew Adams
2022-02-02 19:16 ` Lars Ingebrigtsen
1 sibling, 0 replies; 10+ messages in thread
From: Drew Adams @ 2018-11-09 19:40 UTC (permalink / raw)
To: N. Jackson, Eli Zaretskii; +Cc: 33320
> in this case I wasn't looking for the documentation of one
> of the menu items, I was looking for the
> documentation for whatever function pops up the menu itself.
I know of no good answer for that. Maybe it should be an
enhancement request.
You can find out which keymap the prefix key is bound to by
doing this:
M-x pp-eval-expression
(lookup-key (current-global-map) (kbd "C-<down-mouse-3>"))
But you have to know whether it is <down-mouse-3> or <mouse-3>
that has the binding. And that evaluation does not tell you
the name of a variable that might be bound to the keymap. It
just shows you the keymap itself.
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-09 7:57 ` Eli Zaretskii
2018-11-09 19:18 ` N. Jackson
@ 2018-11-09 23:02 ` Richard Stallman
2018-11-10 7:49 ` Eli Zaretskii
2018-11-10 21:45 ` Glenn Morris
1 sibling, 2 replies; 10+ messages in thread
From: Richard Stallman @ 2018-11-09 23:02 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 33320, nljlistbox2
[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> I don't think we can do that with all toolkits, because once Emacs
> pops up the menu, the toolkit has control.
Are any of the supported display methods not worth supporting any more?
In principle, we could drop any that users don't care about any more.
--
Dr Richard Stallman
President, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-09 23:02 ` Richard Stallman
@ 2018-11-10 7:49 ` Eli Zaretskii
2018-11-10 21:45 ` Glenn Morris
1 sibling, 0 replies; 10+ messages in thread
From: Eli Zaretskii @ 2018-11-10 7:49 UTC (permalink / raw)
To: rms; +Cc: 33320, nljlistbox2
> From: Richard Stallman <rms@gnu.org>
> Cc: nljlistbox2@gmail.com, 33320@debbugs.gnu.org
> Date: Fri, 09 Nov 2018 18:02:11 -0500
>
> > I don't think we can do that with all toolkits, because once Emacs
> > pops up the menu, the toolkit has control.
>
> Are any of the supported display methods not worth supporting any more?
> In principle, we could drop any that users don't care about any more.
I'm not aware of any we want to drop, and the question was about GTK,
which we definitely don't want to drop.
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-09 23:02 ` Richard Stallman
2018-11-10 7:49 ` Eli Zaretskii
@ 2018-11-10 21:45 ` Glenn Morris
2018-11-12 10:16 ` Robert Pluim
1 sibling, 1 reply; 10+ messages in thread
From: Glenn Morris @ 2018-11-10 21:45 UTC (permalink / raw)
To: rms; +Cc: 33320, nljlistbox2
Richard Stallman wrote:
> > I don't think we can do that with all toolkits, because once Emacs
> > pops up the menu, the toolkit has control.
>
> Are any of the supported display methods not worth supporting any more?
> In principle, we could drop any that users don't care about any more.
This has been discussed before, see eg https://debbugs.gnu.org/26180 .
The Motif and "no toolkit" toolkits are very little used
(see eg https://debbugs.gnu.org/stats/emacs.html).
The Lucid/Athena toolkit is a bit more popular. I use and like it
myself, but would be willing to see it go if it made life substantially
easier for the people maintaining these areas of Emacs.
I also think GTK+ v2 could go, frankly, though that could be a bit contentious.
That would leave only GTK+ v3 (ie, support only the current stable GTK+).
But that's all irrelevant since the people working on these areas feel
differently, see bug#26180 again.
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-10 21:45 ` Glenn Morris
@ 2018-11-12 10:16 ` Robert Pluim
2018-11-12 13:34 ` martin rudalics
0 siblings, 1 reply; 10+ messages in thread
From: Robert Pluim @ 2018-11-12 10:16 UTC (permalink / raw)
To: Glenn Morris; +Cc: 33320, nljlistbox2, rms
Glenn Morris <rgm@gnu.org> writes:
> Richard Stallman wrote:
>
>> > I don't think we can do that with all toolkits, because once Emacs
>> > pops up the menu, the toolkit has control.
>>
>> Are any of the supported display methods not worth supporting any more?
>> In principle, we could drop any that users don't care about any more.
>
> This has been discussed before, see eg https://debbugs.gnu.org/26180 .
> The Motif and "no toolkit" toolkits are very little used
> (see eg https://debbugs.gnu.org/stats/emacs.html).
As mentioned in that bug, the other toolkits are useful for sanity
checking.
> The Lucid/Athena toolkit is a bit more popular. I use and like it
> myself, but would be willing to see it go if it made life substantially
> easier for the people maintaining these areas of Emacs.
> I also think GTK+ v2 could go, frankly, though that could be a bit contentious.
> That would leave only GTK+ v3 (ie, support only the current stable GTK+).
>
GTK+ v2 could go I guess, but I donʼt think it causes too many
problems. The problems I have stem mostly from the mixing of GTK and
X11 calls, so the goal there should be to remove the direct calls into
X11 (especially since at some point X11 will disappear to be replaced
by Wayland).
Robert
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-12 10:16 ` Robert Pluim
@ 2018-11-12 13:34 ` martin rudalics
0 siblings, 0 replies; 10+ messages in thread
From: martin rudalics @ 2018-11-12 13:34 UTC (permalink / raw)
To: Robert Pluim, Glenn Morris; +Cc: 33320, nljlistbox2, rms
> The problems I have stem mostly from the mixing of GTK and
> X11 calls, so the goal there should be to remove the direct calls into
> X11 (especially since at some point X11 will disappear to be replaced
> by Wayland).
Maybe we could convince Glenn to set things up for us: provide gtk
equivalents of xterm.h, xterm.c, xfns.c and whatever else we would
need and the facilities for making a "pure" gtk build - one that does
not rely on xterm.h, xfns.c,... Then people could (1) eliminate the
Lucid, Motif, non-toolkit stuff from there (2) optionally merge
gtkutil there and (3) eventually remove the X11 dependent parts.
Otherwise, this will remain a pipe dream till the end of time.
martin
^ permalink raw reply [flat|nested] 10+ messages in thread
* bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3
2018-11-09 19:18 ` N. Jackson
2018-11-09 19:40 ` Drew Adams
@ 2022-02-02 19:16 ` Lars Ingebrigtsen
1 sibling, 0 replies; 10+ messages in thread
From: Lars Ingebrigtsen @ 2022-02-02 19:16 UTC (permalink / raw)
To: N. Jackson; +Cc: 33320
"N. Jackson" <nljlistbox2@gmail.com> writes:
> Perhaps the documentation for `describe-key' should mention that? It
> might say something about it displaying that final hyphen while it is
> waiting for more input, when a complete key command has not yet been
> entered for it to display help on.
I've now done this in Emacs 29.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2022-02-02 19:16 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-11-08 21:49 bug#33320: 27.0.50; `describe-key' fails to display help for C-mouse-3 N. Jackson
2018-11-09 7:57 ` Eli Zaretskii
2018-11-09 19:18 ` N. Jackson
2018-11-09 19:40 ` Drew Adams
2022-02-02 19:16 ` Lars Ingebrigtsen
2018-11-09 23:02 ` Richard Stallman
2018-11-10 7:49 ` Eli Zaretskii
2018-11-10 21:45 ` Glenn Morris
2018-11-12 10:16 ` Robert Pluim
2018-11-12 13:34 ` martin rudalics
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