* redisplay probs
@ 2002-07-19 0:59 Miles Bader
2002-07-20 1:12 ` Tak Ota
0 siblings, 1 reply; 3+ messages in thread
From: Miles Bader @ 2002-07-19 0:59 UTC (permalink / raw)
Redisplay seems screwed up, such that it often fails to update the
screen when it should. I noticed this happening since yesterday
(2002-07-18), and it persists after today's CVS update.
Example:
Horizontal scrolling should redisplay to reflect the scrolling, but
doesn't:
Make a long line, e.g., by `C-u 200 x', and then turn on
truncate-lines with `C-u 1 M-x toggle-truncate-lines RET';
You are at the end of the long-line, so the screen is now
scrolled horizontally to show the end.
Move to the beginning of the line with `C-a', which should
horizontally scroll to the left margin -- and notice that
the screen doesn't change, the cursor just disappears.
You can fix it with C-l.
-Miles
--
`Life is a boundless sea of bitterness'
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: redisplay probs
2002-07-19 0:59 redisplay probs Miles Bader
@ 2002-07-20 1:12 ` Tak Ota
2002-07-21 20:15 ` Richard Stallman
0 siblings, 1 reply; 3+ messages in thread
From: Tak Ota @ 2002-07-20 1:12 UTC (permalink / raw)
Cc: emacs-pretest-bug, emacs-devel
The following patch fixed at least the problem you reported however it
is quite useless since I still have other redisplay problems that I
cannot precisely characterize their conditions. One thing seems to be
sure that if buffer_unchanged_p is set to 0 permanently all the
problem disappears. Does buffer_unchanged_p worth introduction?
-Tak
*** ../../pure/emacs-21.3.50/src/xdisp.c Fri Jul 19 07:15:41 2002
--- xdisp.c Fri Jul 19 17:20:50 2002
***************
*** 10369,10375 ****
not moved off the frame. */
if (buffer_unchanged_p
&& (rc = try_cursor_movement (window, startp, &temp_scroll_step),
! rc != CURSOR_MOVEMENT_CANNOT_BE_USED))
{
switch (rc)
{
--- 10369,10376 ----
not moved off the frame. */
if (buffer_unchanged_p
&& (rc = try_cursor_movement (window, startp, &temp_scroll_step),
! rc != CURSOR_MOVEMENT_CANNOT_BE_USED)
! && (XFASTINT (w->column_number_displayed) == (int) current_column ()))
{
switch (rc)
{
19 Jul 2002 09:59:30 +0900: Miles Bader <miles@lsi.nec.co.jp> wrote:
> Redisplay seems screwed up, such that it often fails to update the
> screen when it should. I noticed this happening since yesterday
> (2002-07-18), and it persists after today's CVS update.
>
> Example:
>
> Horizontal scrolling should redisplay to reflect the scrolling, but
> doesn't:
>
> Make a long line, e.g., by `C-u 200 x', and then turn on
> truncate-lines with `C-u 1 M-x toggle-truncate-lines RET';
> You are at the end of the long-line, so the screen is now
> scrolled horizontally to show the end.
>
> Move to the beginning of the line with `C-a', which should
> horizontally scroll to the left margin -- and notice that
> the screen doesn't change, the cursor just disappears.
>
> You can fix it with C-l.
>
> -Miles
> --
> `Life is a boundless sea of bitterness'
>
> _______________________________________________
> Emacs-devel mailing list
> Emacs-devel@gnu.org
> http://mail.gnu.org/mailman/listinfo/emacs-devel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-07-19 0:59 redisplay probs Miles Bader
2002-07-20 1:12 ` Tak Ota
2002-07-21 20:15 ` Richard Stallman
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