--- Begin Message ---
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Subject: |
26.3; bug of mouse-face including linebreak |
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Date: |
Sun, 12 Jan 2020 22:32:31 +0900 |
If 'mouse-face is put on a reaion including linebreaks and active,
the appearance of the blank areas right to linebreaks is changed.
But pointing the blank areas does not activate 'mouse-face.
If 'mouse-face is put on a region ending with a linebreak,
the activated appearance covers the first character of the next line.
Example:
Evaluating the form below, a green area is displayed, where 'face,
'mouse-face, 'keymap and 'help-echo properties are put.
The green area includes a text "TARGET" and a blank area.
When pointing "TARGET", 'mouse-face is active.
The red area covers "*" in the next line, which has no properties.
When pointting the green blank area, 'mouse-face is not active.
Clicking the green area(both "TARGET" and the blank area) shows a
message "mouse-face: (:background red)".
The keymap is also active at "*" in the next line, which has no
properties.
The 'help-echo property is active only when pointing on "TARGET", not on
the green blank area.
(let ((map (make-sparse-keymap)))
(switch-to-buffer (generate-new-buffer "tmp"))
(define-key map [down-mouse-1] #'ignore)
(define-key map [mouse-1]
(lambda (ev)
(interactive "e")
(let* ((p (posn-point (event-end ev)))
(prop (get-text-property p 'mouse-face)))
(message "mouse-face: %s" prop))))
(define-key map "e" 'end-of-line)
(insert "before\n"
(propertize "TARGET\n"
'face '(:background "green")
'mouse-face '(:background "red")
'help-echo "click here"
'keymap map)
"*after\n"))
In GNU Emacs 26.3 (build 1, x86_64-w64-mingw32)
of 2019-08-29 built on CIRROCUMULUS
Repository revision: 96dd0196c28bc36779584e47fffcca433c9309cd
Windowing system distributor 'Microsoft Corp.', version 6.3.9600
Recent messages:
Configured using:
'configure --without-dbus --host=x86_64-w64-mingw32
--without-compress-install 'CFLAGS=-O2 -static -g3''
Configured features:
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Important settings:
value of $LANG: JPN
locale-coding-system: cp932
Major mode: Fundamental
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
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emacs)
Memory information:
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(symbols 48 25226 1)
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(strings 32 39872 1327)
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--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#39098: 26.3; bug of mouse-face including linebreak |
|
Date: |
Thu, 23 Jan 2020 06:09:07 +0100 |
|
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Eli Zaretskii <address@hidden> writes:
> tags 39098 notabug
> thanks
>
>> From: address@hidden
>> Date: Sun, 12 Jan 2020 22:32:31 +0900
>>
>> If 'mouse-face is put on a reaion including linebreaks and active,
>> the appearance of the blank areas right to linebreaks is changed.
>> But pointing the blank areas does not activate 'mouse-face.
>>
>> If 'mouse-face is put on a region ending with a linebreak,
>> the activated appearance covers the first character of the next line.
>
> This is not a bug, this is how mouse-face is supposed to work. It
> differs from other faces in this regard, because it is intended to be
> used to show mouse-sensitive text, including text that spans multiple
> lines.
I'm therefore also closing this bug.
Best regards,
Stefan Kangas
--- End Message ---