* bug#10076: 24.0.91; Automatic horizontal scrolling
@ 2011-11-19 18:24 Dani Moncayo
2011-11-19 19:16 ` Eli Zaretskii
0 siblings, 1 reply; 8+ messages in thread
From: Dani Moncayo @ 2011-11-19 18:24 UTC (permalink / raw)
To: 10076
Recipe from "emacs -Q":
1. Type "C-p".
--> Without this, the bug does not show up.
2. Type "C-u 2 C-x < SPC".
--> This scrolls the buffer two position to the left (ok).
3. Type "C-p C-p".
--> The buffer automatically scrolls back to its original position,
which is wrong (see [a]).
---- Footnotes ----
[a] Last paragraph of (info "(emacs)Horizontal Scrolling"):
If you use those commands to scroll a window horizontally, that sets
a lower bound for automatic horizontal scrolling. Automatic scrolling
will continue to scroll the window, but never farther to the right than
the amount you previously set by `scroll-left'.
In GNU Emacs 24.0.91.1 (i386-mingw-nt6.1.7601)
of 2011-11-17 on DANI-PC
Windowing system distributor `Microsoft Corp.', version 6.1.7601
configured using `configure --with-gcc (4.5)'
--
Dani Moncayo
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 18:24 bug#10076: 24.0.91; Automatic horizontal scrolling Dani Moncayo
@ 2011-11-19 19:16 ` Eli Zaretskii
2011-11-19 19:54 ` Eli Zaretskii
0 siblings, 1 reply; 8+ messages in thread
From: Eli Zaretskii @ 2011-11-19 19:16 UTC (permalink / raw)
To: Dani Moncayo; +Cc: 10076
> Date: Sat, 19 Nov 2011 19:24:54 +0100
> From: Dani Moncayo <dmoncayo@gmail.com>
>
> Recipe from "emacs -Q":
>
> 1. Type "C-p".
> --> Without this, the bug does not show up.
>
> 2. Type "C-u 2 C-x < SPC".
> --> This scrolls the buffer two position to the left (ok).
>
> 3. Type "C-p C-p".
> --> The buffer automatically scrolls back to its original position,
> which is wrong (see [a]).
This happens in Emacs 23.3 as well, so this isn't a regression.
I will try to take a look at it when I have time and see if it's
something simple to fix.
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 19:16 ` Eli Zaretskii
@ 2011-11-19 19:54 ` Eli Zaretskii
2011-11-19 20:01 ` Eli Zaretskii
` (2 more replies)
0 siblings, 3 replies; 8+ messages in thread
From: Eli Zaretskii @ 2011-11-19 19:54 UTC (permalink / raw)
To: dmoncayo; +Cc: 10076
> Date: Sat, 19 Nov 2011 21:16:00 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 10076@debbugs.gnu.org
>
> > Date: Sat, 19 Nov 2011 19:24:54 +0100
> > From: Dani Moncayo <dmoncayo@gmail.com>
> >
> > Recipe from "emacs -Q":
> >
> > 1. Type "C-p".
> > --> Without this, the bug does not show up.
> >
> > 2. Type "C-u 2 C-x < SPC".
> > --> This scrolls the buffer two position to the left (ok).
> >
> > 3. Type "C-p C-p".
> > --> The buffer automatically scrolls back to its original position,
> > which is wrong (see [a]).
>
> This happens in Emacs 23.3 as well, so this isn't a regression.
>
> I will try to take a look at it when I have time and see if it's
> something simple to fix.
I found an easy band-aid, and fixed this in revision 106431 on the
trunk.
(The fundamental problem here is that posn-at-point can return nil, if
point is invisible in the window, and line-move-visual doesn't handle
this situation. Can point be invisible in some case that doesn't
involve hscroll?)
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 19:54 ` Eli Zaretskii
@ 2011-11-19 20:01 ` Eli Zaretskii
2011-11-19 20:35 ` Johan Bockgård
2011-11-19 21:19 ` Dani Moncayo
2 siblings, 0 replies; 8+ messages in thread
From: Eli Zaretskii @ 2011-11-19 20:01 UTC (permalink / raw)
To: 10076-done
> Date: Sat, 19 Nov 2011 21:54:26 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 10076@debbugs.gnu.org
>
> I found an easy band-aid, and fixed this in revision 106431 on the
> trunk.
Closing.
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 19:54 ` Eli Zaretskii
2011-11-19 20:01 ` Eli Zaretskii
@ 2011-11-19 20:35 ` Johan Bockgård
2011-11-19 21:13 ` Eli Zaretskii
2011-11-19 21:19 ` Dani Moncayo
2 siblings, 1 reply; 8+ messages in thread
From: Johan Bockgård @ 2011-11-19 20:35 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 10076
Eli Zaretskii <eliz@gnu.org> writes:
> (The fundamental problem here is that posn-at-point can return nil, if
> point is invisible in the window, and line-move-visual doesn't handle
> this situation. Can point be invisible in some case that doesn't
> involve hscroll?)
It also happens during ordinary scrolling
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7046#23
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 20:35 ` Johan Bockgård
@ 2011-11-19 21:13 ` Eli Zaretskii
0 siblings, 0 replies; 8+ messages in thread
From: Eli Zaretskii @ 2011-11-19 21:13 UTC (permalink / raw)
To: Johan Bockgård; +Cc: 10076
> From: Johan Bockgård <bojohan@gnu.org>
> Cc: 10076@debbugs.gnu.org
> Date: Sat, 19 Nov 2011 21:35:00 +0100
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > (The fundamental problem here is that posn-at-point can return nil, if
> > point is invisible in the window, and line-move-visual doesn't handle
> > this situation. Can point be invisible in some case that doesn't
> > involve hscroll?)
>
> It also happens during ordinary scrolling
>
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7046#23
The problem with posn-at-point returning nil is that you have no way
of knowing the horizontal position of point.
Does it help to call line-move-1 in line-move instead of
line-move-visual, when posn-at-point returns nil?
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 19:54 ` Eli Zaretskii
2011-11-19 20:01 ` Eli Zaretskii
2011-11-19 20:35 ` Johan Bockgård
@ 2011-11-19 21:19 ` Dani Moncayo
2011-11-20 18:27 ` bug#7526: " Eli Zaretskii
2 siblings, 1 reply; 8+ messages in thread
From: Dani Moncayo @ 2011-11-19 21:19 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 10076
> I found an easy band-aid, and fixed this in revision 106431 on the
> trunk.
Thanks Eli. Your patch also seem to fix bug #7526, which could be closed too.
--
Dani Moncayo
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#7526: bug#10076: 24.0.91; Automatic horizontal scrolling
2011-11-19 21:19 ` Dani Moncayo
@ 2011-11-20 18:27 ` Eli Zaretskii
0 siblings, 0 replies; 8+ messages in thread
From: Eli Zaretskii @ 2011-11-20 18:27 UTC (permalink / raw)
To: Dani Moncayo; +Cc: 7526-done, 10076
> Date: Sat, 19 Nov 2011 22:19:24 +0100
> From: Dani Moncayo <dmoncayo@gmail.com>
> Cc: 10076@debbugs.gnu.org
>
> > I found an easy band-aid, and fixed this in revision 106431 on the
> > trunk.
>
> Thanks Eli. Your patch also seem to fix bug #7526, which could be closed too.
Done, thanks.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2011-11-20 18:27 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-11-19 18:24 bug#10076: 24.0.91; Automatic horizontal scrolling Dani Moncayo
2011-11-19 19:16 ` Eli Zaretskii
2011-11-19 19:54 ` Eli Zaretskii
2011-11-19 20:01 ` Eli Zaretskii
2011-11-19 20:35 ` Johan Bockgård
2011-11-19 21:13 ` Eli Zaretskii
2011-11-19 21:19 ` Dani Moncayo
2011-11-20 18:27 ` bug#7526: " Eli Zaretskii
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