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bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for m
From: |
npostavs |
Subject: |
bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks |
Date: |
Sun, 11 Jun 2017 20:18:54 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.2.50 (gnu/linux) |
tags 12204 + confirmed
found 12204 25.2
severity 12204 minor
quit
Eli Zaretskii <eliz@gnu.org> writes:
> emacs -Q
> M-x gdb RET
>
> . Choose some executable, it doesn't matter which one, and type its file
> name followed by RET.
>
> . Wait for GDB to start up and show its prompt, then type:
>
> M-x gud-tooltip-mode RET
>
> . If your Emacs bzr revision is older than 109615, click the mouse
> once somewhere in the window. (Revision 109615 fixed the bug which
> required that click.)
>
> . Type "C-h c", and then move the mouse to some tool-bar button or
> menu-bar menu item, and click on it. Watch in disbelief as Emacs
> _executes_ the command bound to that click instead of showing its
> documentation.
>
> . Repeat the experiment, but this time, after "C-h c" slowly move the
> mouse a small ways and watch the echo area. You will see a message
> there:
>
> <mouse-movement> runs the command gud-tooltip-mouse-motion
>
> The message will disappear after you move the mouse again.
>
> This happens because gud-tooltip-mode binds the command
> gud-tooltip-mouse-motion to mouse-movement event. The echo area
> display of "C-h c" about that is promptly erased by the next mouse
> motion, so if you are going for a tool bar or menu bar, you won't
> notice it. Then you will be surprised by the execution of a command
> for which you wanted to see help.
>
> This is not a bug, strictly speaking: the help command works as
> designed. But I wonder whether we could somehow surprise the user
> less in this situation.
Perhaps describe-key could respect 'use-dialog-box' and popup a dialog
box when the "key" comes from the mouse?
Also, if I understand the gud.el code, it seems like it might be better
implemented if the 'help-echo' or 'mouse-face' text properties were
extended to support a value of 2 functions: a 'mouse-in' and a
'mouse-out' function.
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks,
npostavs <=
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, Eli Zaretskii, 2017/06/12
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, Noam Postavsky, 2017/06/12
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, Eli Zaretskii, 2017/06/12
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, Noam Postavsky, 2017/06/12
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, Eli Zaretskii, 2017/06/12
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, npostavs, 2017/06/24
- bug#12204: 24.1.50; Binding mouse-movement interferes with "C-h c" for mouse clicks, Eli Zaretskii, 2017/06/25