bug#49800: 28.0.50; [PATCH] Extend Gnus summary highlight faces by default

[Kévin Le Gouguec]

Hello,

This is a followup to bug#47026, where we made
gnus-summary-highlight-line and gnus-highlight-selected-summary apply
the highlighting face up to and including the final newline.

In this new patch, I went over the faces in gnus-summary-highlight and
added :extend t to all of them.  Even though most of them have no
background or underline set in the default theme, :extend's special
handling means that other themes will not need to set that property
explicitly.

0001-Extend-Gnus-summary-highlight-faces-by-default.patch
Description: Text Data

In GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.5, cairo 
version 1.16.0)
 of 2021-07-30 built on hirondell
Repository revision: 5f65b67daccf7f4f30274f147a1adb5142328c6d
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12004000
System Description: Debian GNU/Linux 10 (buster)

Configured using:
 'configure --with-xwidgets --with-cairo'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS
X11 XDBE XIM XPM XWIDGETS GTK3 ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix