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bug#9092: movement cursor in speedbar
From: |
Lars Ingebrigtsen |
Subject: |
bug#9092: movement cursor in speedbar |
Date: |
Tue, 08 Dec 2020 15:46:21 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Juanma Barranquero <lekktu@gmail.com> writes:
> emacs -Q -f speedbar
>
> The cursor is at the bottom of the speedbar window.
>
> <up> ; the cursor moves over the icon in the previous line
> <up>
> ...
> <up> ; the cursor moves over the icons normally
> <right> <left> ; the cursor is again over the icon
> <down> ; now the cursor moves to the space next to the icon.
>
> and from that moment on, even if you move over the icon, the cursor
> moves back outside it.
This behaviour is still present in Emacs 28.
> According to Eli, line-move-visual tells vertical-motion which column
> the cursor should move to, and that does not work too well with stuff
> that isn't text, like an image or a stretch glyph (like the one for
> `(space :align-to NN)') display property.
Speedbar seems to have some invisible characters at the start, and then
an image, and I think that's what's confusing Emacs here. If it has
been just an image, Emacs usually handles that fine.
Here's a simpler recipe to reproduce:
(dotimes (i 5)
(insert (propertize "a" 'invisible t)
(propertize "c" 'display
(find-image '((:type xpm :file "search.xpm"))))
(format " foo %s\n" i)))
If we don't have the invisible text before the image, then motion
commands work as expected.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#9092: movement cursor in speedbar,
Lars Ingebrigtsen <=