When reading mail/news in Gnus, HTML messages sometimes have patches
of missing background colour. That is, there are patches where the
window background colour shows through. This problem is not apparent
in Emacs 24.
The problem does not seem to happen where there is text in the
foreground. Rather, the HTML background colour is missing on some
lines after the text ends, from the end of the text to the right
edge of the window (or block). [This is with left-to-right text.]
The attachment example-1_Emacs-25.png shows an example of this
problem. (The window background colour is black and the HTML is
painting a grey background colour.) The attachment
example-1_Emacs-24.png shows the same message correctly displayed in
Emacs 24.5.
The attachment example-2_Emacs-25.png shows another example of the
problem, while the attachment example-2_Emacs-24.png shows the same
message correctly displayed in Emacs 24.5.
Note: I have shr-use-fonts set to nil, and this seems to make the
problem worse (than with shr-use-fonts non-nil). But the problem
still occurs sometimes with non-nil shr-use-fonts. The attachment
example-2-b_Emacs-25.png shows the problem with non-nil
shr-use-fonts.
FWIW, I attach the two example messages in raw form, in case they
should be useful for reproducing the problem.
In GNU Emacs 25.0.90.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.7)
of 2016-01-31 built on moondust
Windowing system distributor 'Fedora Project', version 11.0.11800000
System Description: Fedora release 23 (Twenty Three)
Configured using:
'configure --prefix=/home/nlj/local/ --enable-checking=yes,glyphs
'CFLAGS=-O0 -g3 -ggdb''
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11
Important settings:
value of $LC_MONETARY: en_DK.utf8
value of $LC_NUMERIC: en_DK.utf8
value of $LC_TIME: en_DK.utf8
value of $LANG: en_CA.UTF-8
value of $XMODIFIERS: @im=ibus
locale-coding-system: utf-8-unix
Major mode: Text
Minor modes in effect:
flyspell-mode: t
recentf-mode: t
display-battery-mode: t
display-time-mode: t
save-place-mode: t
delete-selection-mode: t
show-paren-mode: t
savehist-mode: t
electric-pair-mode: t
desktop-save-mode: t
cua-mode: t
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
size-indication-mode: t
column-number-mode: t
line-number-mode: t
global-visual-line-mode: t
visual-line-mode: t
transient-mark-mode: t
Recent messages:
Read-Only mode enabled in current buffer
funcall-interactively: Buffer is read-only: # [2 times]
Quit
Read-Only mode disabled in current buffer
You can run the command ‘read-only-mode’ with C-x C-q
Read-Only mode disabled in current buffer
next-line: End of buffer [2 times]
Mark set [4 times]
Auto-saving...done
Auto-saving...done
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Features:
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bookmark pp iso-transl ibuf-ext ibuffer gnus-cite smiley shr-color color
shr seq dom subr-x browse-url mm-archive gnus-async gnus-bcklg qp
mail-extr gnus-ml disp-table nndraft nnmh utf-7 epa-file epa derived
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gnus-srvr gnus-score score-mode nnvirtual gnus-msg nntp gnus-cache
cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs sieve-mode flyspell ispell sage sage-load rx
emms-bookmarks emms-cue emms-mode-line-icon emms-browser sort
emms-playlist-sort emms-last-played emms-player-xine emms-player-mpd tq
emms-playing-time emms-lyrics emms-url url url-proxy url-privacy
url-expand url-methods url-history url-cookie url-domsuf url-util
url-parse auth-source eieio byte-opt bytecomp byte-compile cl-extra
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later-do emms-playlist-mode emms-player-vlc emms-player-mplayer
emms-player-simple emms-source-playlist emms-source-file locate
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smime password-cache dig mailcap gnus-sum gnus-group gnus-undo
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nnoo parse-time gnus-spec gnus-int gnus-range message cl-macs rfc822 mml
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lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset
image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
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sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)
Memory information:
((conses 16 817742 128249)
(symbols 48 111113 0)
(miscs 40 4039 8587)
(strings 32 225650 9330)
(string-bytes 1 8220204)
(vectors 16 58324)
(vector-slots 8 1917884 195247)
(floats 8 757 1286)
(intervals 56 40537 323)
(buffers 976 115)
(heap 1024 134139 29982))