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bug#39812: 26.1; face-remapping-alist is sometimes set to an unexpected
From: |
Markus Triska |
Subject: |
bug#39812: 26.1; face-remapping-alist is sometimes set to an unexpected value |
Date: |
Thu, 27 Feb 2020 20:10:22 +0100 |
To reproduce this issue, please start Emacs with "emacs -Q", then place
the following forms in the appearing *scratch* buffer:
(defun a ()
(set (make-local-variable 'face-remapping-alist)
'((default bold))))
(a)
(face-remap-add-relative 'default 'italic)
(a)
and then evaluate the buffer with M-x eval-buffer RET.
Then, inspect the value of face-remapping-alist with:
C-h v face-remapping-alist RET
In my case, the value is: '((default italic bold)).
How can this be explained? The final form (a) is supposed to set
face-remapping-alist to '((default bold)), and hence I expect the
value of face-remapping-alist to be '((default bold)) instead.
When I comment out the first invocation of "(a)", i.e., when I write:
(defun a ()
(set (make-local-variable 'face-remapping-alist)
'((default bold))))
;; (a) ; now this line is commented out
(face-remap-add-relative 'default 'italic)
(a)
and then evaluate the buffer, then face-remapping-alist is set to
'((default bold)), which is the expected value.
As guideline for the definition of the function `a', I used the snippet
from the variable description of face-remapping-alist, which states:
"For instance, the mode my-mode could define a
face ‘my-mode-default’, and then in the mode setup function, do:
(set (make-local-variable 'face-remapping-alist)
'((default my-mode-default))))."
Is this still a recommended way to set this variable, should the above
example work? Is there a reliable way to set face-remapping-alist to
'((default bold)) in the function `a' so that the first example works?
Thank you and all the best!
Markus
In GNU Emacs 26.1 (build 1, x86_64-apple-darwin15.3.0, X toolkit, Xaw scroll
bars)
of 2018-09-22 built on mt-mb
Windowing system distributor 'The X.Org Foundation', version 11.0.11502000
Configured using:
'configure --prefix=/opt/local --without-ns --without-dbus
--without-gconf --without-libotf --without-m17n-flt --without-gpm
--with-gnutls --with-xml2 --with-modules --infodir
/opt/local/share/info/emacs --with-x-toolkit=lucid --without-xaw3d
--without-imagemagick --with-xpm --with-jpeg --with-tiff --with-gif
--with-png --with-lcms2 --without-rsvg --with-xft 'CFLAGS=-pipe -Os
-arch x86_64' CPPFLAGS=-I/opt/local/include 'LDFLAGS=-L/opt/local/lib
-Wl,-headerpad_max_install_names -lfreetype -lfontconfig -Wl,-no_pie
-arch x86_64''
Configured features:
XPM JPEG TIFF GIF PNG GSETTINGS NOTIFY ACL GNUTLS LIBXML2 FREETYPE XFT
ZLIB TOOLKIT_SCROLL_BARS LUCID X11 MODULES THREADS LCMS2
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
- bug#39812: 26.1; face-remapping-alist is sometimes set to an unexpected value,
Markus Triska <=