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bug#26153: 26.0.50; Garbage displayed at visual line boundaries
From: |
Yuri D'Elia |
Subject: |
bug#26153: 26.0.50; Garbage displayed at visual line boundaries |
Date: |
Sat, 18 Mar 2017 13:00:40 +0100 |
User-agent: |
mu4e 0.9.19; emacs 26.0.50 |
test.el.gz
Description: application/gzip
1489837793.png
Description: PNG image
In the last weeks a new issue crept up in the display engine. Some
visual garbage is drawn at the horizontal lower/upper edge when using
hl-line-mode, on the region, or anything that redraws the current visual
line to fill the background.
See the attached screenshot, captured with emacs -Q on the current
master, with the lucid toolkit.
Evaluate the test file, then move the pointer down one line at a time,
until garbage is visible.
Changing the font weight seems necessary to trigger this issue, as well
some hidden properties in the line. I wasn't able to reproduce it easily
otherwise.
This seems to have been introduced around commit
d546be31a9320d94769cb322f008f49d08d852a8 ("Fix display of
mouse-highlight produced by overlapping overlays") or earlier.
If the exact commit would be helpful, I can try to pinpoint it.
Configured using:
'configure --with-x-toolkit=lucid --without-gconf --without-gsettings
--with-modules 'CFLAGS=-O3 -march=native -pipe '
LDFLAGS=-fwhole-program'
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND DBUS NOTIFY ACL LIBSELINUX GNUTLS
LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS LUCID X11
MODULES LIBSYSTEMD
Important settings:
value of $LC_COLLATE: C
value of $LC_TIME: en_DK.UTF-8
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries,
Yuri D'Elia <=
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Eli Zaretskii, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Yuri D'Elia, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Eli Zaretskii, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Yuri D'Elia, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Eli Zaretskii, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Yuri D'Elia, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Eli Zaretskii, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Yuri D'Elia, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Yuri D'Elia, 2017/03/18
- bug#26153: 26.0.50; Garbage displayed at visual line boundaries, Eli Zaretskii, 2017/03/18