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bug#9034: point adjustment (with invisible text) moves to the next line
From: |
Lars Ingebrigtsen |
Subject: |
bug#9034: point adjustment (with invisible text) moves to the next line |
Date: |
Wed, 25 Aug 2021 18:32:15 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Dmitry Kurochkin <dmitry.kurochkin@gmail.com> writes:
> (progn (switch-to-buffer "test")
> (insert "aline1\nbline2\ncline3\n")
> (put-text-property 7 14 'invisible t) ; region [\nbline2]
> (goto-char (point-min)))
>
> After that in the test buffer do M-: (progn (end-of-visual-line)
> (point)). `end-of-visual-line' moves point to position 14 as expected.
> But after that the point is adjusted to position 15, as can be checked
> by C-x =.
(I'm going through old bug reports that unfortunately got weren't
resolved at the time.)
This problem is still present in Emacs 28, and as previously noted, any
command you do (with `M-:') makes point advance to the next line. (It's
not 100% reproducible -- sometimes nothing happens, and sometimes it
advances.)
So `C-e' and then, for instance `M-: 4 RET' will advance point here.
Also as previously noted, if Vglobal_disable_point_adjustment is on,
then this doesn't happen, so the problem almost has to be here:
command_loop_1
...
if (current_buffer == prev_buffer
&& XBUFFER (XWINDOW (selected_window)->contents) == current_buffer
&& last_point_position != PT
&& NILP (Vdisable_point_adjustment)
&& NILP (Vglobal_disable_point_adjustment))
{
if (last_point_position > BEGV
&& last_point_position < ZV
&& (composition_adjust_point (last_point_position,
last_point_position)
!= last_point_position))
/* The last point was temporarily set within a grapheme
cluster to prevent automatic composition. To recover
the automatic composition, we must update the
display. */
windows_or_buffers_changed = 21;
if (!already_adjusted)
adjust_point_for_property (last_point_position,
MODIFF != prev_modiff);
}
I haven't tried to debug any further -- is it obvious to anybody what's
failing here, by any chance? :-)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#9034: point adjustment (with invisible text) moves to the next line,
Lars Ingebrigtsen <=
- bug#9034: point adjustment (with invisible text) moves to the next line, Eli Zaretskii, 2021/08/25
- bug#9034: point adjustment (with invisible text) moves to the next line, Lars Ingebrigtsen, 2021/08/26
- bug#9034: point adjustment (with invisible text) moves to the next line, Eli Zaretskii, 2021/08/26
- bug#9034: point adjustment (with invisible text) moves to the next line, Lars Ingebrigtsen, 2021/08/26
- bug#9034: point adjustment (with invisible text) moves to the next line, Eli Zaretskii, 2021/08/26
- bug#9034: point adjustment (with invisible text) moves to the next line, Lars Ingebrigtsen, 2021/08/26
- bug#9034: point adjustment (with invisible text) moves to the next line, Eli Zaretskii, 2021/08/26