* bug#21682: 25.0.50; display bug
@ 2015-10-13 23:37 Richard Stallman
2015-10-14 7:52 ` Andreas Schwab
0 siblings, 1 reply; 12+ messages in thread
From: Richard Stallman @ 2015-10-13 23:37 UTC (permalink / raw)
To: 21682
[-- Attachment #1: Type: text/plain, Size: 161 bytes --]
In emacs -Q, do C-u M-x rmail RET foo RET with the data below in file
foo. It messes up display on my terminal -- characters appear
on the wrong screen line.
[-- Attachment #2: foo --]
[-- Type: application/octet-stream, Size: 9192 bytes --]
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[-- Attachment #3: Type: text/plain, Size: 3742 bytes --]
In GNU Emacs 25.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.23)
of 2015-08-12 on freetop
Repository revision: 79a169684dfad2c0bbb9fdbae539c1f30d9f0ac3
System Description: Trisquel GNU/Linux 7.0, Belenos
Configured using:
`configure 'CFLAGS=-g -O0''
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND GPM DBUS GCONF GSETTINGS NOTIFY
LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK2 X11
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
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[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
--
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
Skype: No way! See stallman.org/skype.html.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-13 23:37 bug#21682: 25.0.50; display bug Richard Stallman
@ 2015-10-14 7:52 ` Andreas Schwab
2015-10-14 16:46 ` Eli Zaretskii
2015-10-15 1:24 ` Richard Stallman
0 siblings, 2 replies; 12+ messages in thread
From: Andreas Schwab @ 2015-10-14 7:52 UTC (permalink / raw)
To: Richard Stallman; +Cc: 21682
Richard Stallman <rms@gnu.org> writes:
> In emacs -Q, do C-u M-x rmail RET foo RET with the data below in file
> foo. It messes up display on my terminal -- characters appear
> on the wrong screen line.
Which terminal? I see no artefacts in konsole, so it's more likely a
bug in the terminal you use.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-14 7:52 ` Andreas Schwab
@ 2015-10-14 16:46 ` Eli Zaretskii
2015-10-15 1:25 ` Richard Stallman
2015-10-15 1:24 ` Richard Stallman
1 sibling, 1 reply; 12+ messages in thread
From: Eli Zaretskii @ 2015-10-14 16:46 UTC (permalink / raw)
To: Andreas Schwab; +Cc: rms, 21682
> From: Andreas Schwab <schwab@suse.de>
> Date: Wed, 14 Oct 2015 09:52:27 +0200
> Cc: 21682@debbugs.gnu.org
>
> Richard Stallman <rms@gnu.org> writes:
>
> > In emacs -Q, do C-u M-x rmail RET foo RET with the data below in file
> > foo. It messes up display on my terminal -- characters appear
> > on the wrong screen line.
>
> Which terminal? I see no artefacts in konsole
Neither do I in PuTTY, which emulates xterm.
Richard, if you disable auto-composition-mode, does that help?
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-14 7:52 ` Andreas Schwab
2015-10-14 16:46 ` Eli Zaretskii
@ 2015-10-15 1:24 ` Richard Stallman
2015-10-15 7:04 ` Andreas Schwab
1 sibling, 1 reply; 12+ messages in thread
From: Richard Stallman @ 2015-10-15 1:24 UTC (permalink / raw)
To: Andreas Schwab; +Cc: 21682
[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> > In emacs -Q, do C-u M-x rmail RET foo RET with the data below in file
> > foo. It messes up display on my terminal -- characters appear
> > on the wrong screen line.
> Which terminal? I see no artefacts in konsole, so it's more likely a
> bug in the terminal you use.
I am using a Linux terminal.
Emacs needs to cope with it, unless we can get it fixed.
--
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
Skype: No way! See stallman.org/skype.html.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-14 16:46 ` Eli Zaretskii
@ 2015-10-15 1:25 ` Richard Stallman
0 siblings, 0 replies; 12+ messages in thread
From: Richard Stallman @ 2015-10-15 1:25 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: schwab, 21682
[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> Richard, if you disable auto-composition-mode, does that help?
The bug does not happen when auto-composition-mode is disabled.
--
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
Skype: No way! See stallman.org/skype.html.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-15 1:24 ` Richard Stallman
@ 2015-10-15 7:04 ` Andreas Schwab
2015-10-15 16:35 ` Eli Zaretskii
2015-10-16 15:57 ` Richard Stallman
0 siblings, 2 replies; 12+ messages in thread
From: Andreas Schwab @ 2015-10-15 7:04 UTC (permalink / raw)
To: Richard Stallman; +Cc: 21682
Richard Stallman <rms@gnu.org> writes:
> Emacs needs to cope with it, unless we can get it fixed.
Emacs cannot know how characters are drawn on a tty.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-15 7:04 ` Andreas Schwab
@ 2015-10-15 16:35 ` Eli Zaretskii
2015-10-15 17:07 ` Andreas Schwab
2015-10-16 15:58 ` Richard Stallman
2015-10-16 15:57 ` Richard Stallman
1 sibling, 2 replies; 12+ messages in thread
From: Eli Zaretskii @ 2015-10-15 16:35 UTC (permalink / raw)
To: Andreas Schwab, Kenichi Handa; +Cc: rms, 21682
> From: Andreas Schwab <schwab@suse.de>
> Date: Thu, 15 Oct 2015 09:04:24 +0200
> Cc: 21682@debbugs.gnu.org
>
> Richard Stallman <rms@gnu.org> writes:
>
> > Emacs needs to cope with it, unless we can get it fixed.
>
> Emacs cannot know how characters are drawn on a tty.
Does that mean you understood what causes Richard's problem? If so,
can you explain?
I thought asking Richard for dribble files in both cases, but if you
already understand what's going on, there would be no need.
I actually don't understand why we have auto-composition-mode turned
on for TTY frames, and where do we take the data for composing
characters there (there's no font back-end). Kenichi, can you
explain, please?
Thanks.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-15 16:35 ` Eli Zaretskii
@ 2015-10-15 17:07 ` Andreas Schwab
2015-10-15 17:16 ` Eli Zaretskii
2015-10-16 15:58 ` Richard Stallman
1 sibling, 1 reply; 12+ messages in thread
From: Andreas Schwab @ 2015-10-15 17:07 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: rms, 21682
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Andreas Schwab <schwab@suse.de>
>> Date: Thu, 15 Oct 2015 09:04:24 +0200
>> Cc: 21682@debbugs.gnu.org
>>
>> Richard Stallman <rms@gnu.org> writes:
>>
>> > Emacs needs to cope with it, unless we can get it fixed.
>>
>> Emacs cannot know how characters are drawn on a tty.
>
> Does that mean you understood what causes Richard's problem? If so,
> can you explain?
The terminal has to support composition. The Linux console doesn't.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-15 17:07 ` Andreas Schwab
@ 2015-10-15 17:16 ` Eli Zaretskii
0 siblings, 0 replies; 12+ messages in thread
From: Eli Zaretskii @ 2015-10-15 17:16 UTC (permalink / raw)
To: Andreas Schwab; +Cc: rms, 21682
> From: Andreas Schwab <schwab@suse.de>
> Cc: Kenichi Handa <handa@gnu.org>, rms@gnu.org, 21682@debbugs.gnu.org
> Date: Thu, 15 Oct 2015 19:07:05 +0200
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> From: Andreas Schwab <schwab@suse.de>
> >> Date: Thu, 15 Oct 2015 09:04:24 +0200
> >> Cc: 21682@debbugs.gnu.org
> >>
> >> Richard Stallman <rms@gnu.org> writes:
> >>
> >> > Emacs needs to cope with it, unless we can get it fixed.
> >>
> >> Emacs cannot know how characters are drawn on a tty.
> >
> > Does that mean you understood what causes Richard's problem? If so,
> > can you explain?
>
> The terminal has to support composition. The Linux console doesn't.
Ah, I see, thanks.
So maybe we should only turn on auto-composition-mode in
terminal-specific files like term/xterm.el?
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-15 7:04 ` Andreas Schwab
2015-10-15 16:35 ` Eli Zaretskii
@ 2015-10-16 15:57 ` Richard Stallman
1 sibling, 0 replies; 12+ messages in thread
From: Richard Stallman @ 2015-10-16 15:57 UTC (permalink / raw)
To: Andreas Schwab; +Cc: 21682
[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> > Emacs needs to cope with it, unless we can get it fixed.
> Emacs cannot know how characters are drawn on a tty.
It can, and it does -- with the help of termcap.
--
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
Skype: No way! See stallman.org/skype.html.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-15 16:35 ` Eli Zaretskii
2015-10-15 17:07 ` Andreas Schwab
@ 2015-10-16 15:58 ` Richard Stallman
2015-10-16 16:14 ` Eli Zaretskii
1 sibling, 1 reply; 12+ messages in thread
From: Richard Stallman @ 2015-10-16 15:58 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: schwab, 21682
[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> I thought asking Richard for dribble files in both cases, but if you
> already understand what's going on, there would be no need.
I sent a very simple reproducible test case -- better than a dribble
file. Did you mean a termscript file?
--
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
Skype: No way! See stallman.org/skype.html.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#21682: 25.0.50; display bug
2015-10-16 15:58 ` Richard Stallman
@ 2015-10-16 16:14 ` Eli Zaretskii
0 siblings, 0 replies; 12+ messages in thread
From: Eli Zaretskii @ 2015-10-16 16:14 UTC (permalink / raw)
To: rms; +Cc: schwab, 21682
> From: Richard Stallman <rms@gnu.org>
> CC: schwab@suse.de, handa@gnu.org, 21682@debbugs.gnu.org
> Date: Fri, 16 Oct 2015 11:58:47 -0400
>
> > I thought asking Richard for dribble files in both cases, but if you
> > already understand what's going on, there would be no need.
>
> I sent a very simple reproducible test case -- better than a dribble
> file.
I don't see the problem on fencepost accessed via PuTTY.
> Did you mean a termscript file?
Yes, sorry. But now that Andreas explained the problem, there's no
need.
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2015-10-16 16:14 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-10-13 23:37 bug#21682: 25.0.50; display bug Richard Stallman
2015-10-14 7:52 ` Andreas Schwab
2015-10-14 16:46 ` Eli Zaretskii
2015-10-15 1:25 ` Richard Stallman
2015-10-15 1:24 ` Richard Stallman
2015-10-15 7:04 ` Andreas Schwab
2015-10-15 16:35 ` Eli Zaretskii
2015-10-15 17:07 ` Andreas Schwab
2015-10-15 17:16 ` Eli Zaretskii
2015-10-16 15:58 ` Richard Stallman
2015-10-16 16:14 ` Eli Zaretskii
2015-10-16 15:57 ` Richard Stallman
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