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bug#62275: 28.2; Changing major mode changes the current text scaling
From: |
Drew Adams |
Subject: |
bug#62275: 28.2; Changing major mode changes the current text scaling |
Date: |
Sun, 19 Mar 2023 16:03:26 +0000 |
Maybe this is intended and documented somewhere - if so, feel free to
close it. I haven't seen it mentioned, and it doesn't seem right to me.
emacs -Q
Use the mouse (with `C-') or keys to text-scale the buffer, e.g., to
enlarge the text size.
M-x emacs-lisp-mode
The text in the buffer (*scratch*) is resized back to its original size.
Should that happen? If so, why - is that the right behavior?
In addition, if you then do `M-x lisp-interaction-mode', the text size
doesn't change back to the size you had scaled it to previously.
Text-scaling is per buffer, and the buffer hasn't changed. Only the
major mode has changed.
I can guess that this is happening because changing the mode kills all
local variables. But is this the intended behavior, i.e., what we want?
As a user, I find this unexpected (even a bit annoying). I think users
will (and should) think of text-scaling as per buffer, not something
that's affected by changing the major mode.
I tried doing this, but it didn't fix the behavior.
(put 'text-scale-mode-remapping 'permanent-local t)
(put 'text-scale-mode-lighter 'permanent-local t)
(put 'text-scale-mode-amount 'permanent-local t)
Haven't tried to understand what's really going on - just reporting that
the behavior seems odd to me.
If there's (also) a good use case for the current behavior then maybe we
could have a user option, to choose whether a major-mode change resets
the text scale?
In GNU Emacs 28.2 (build 2, x86_64-w64-mingw32)
of 2022-09-13 built on AVALON
Windowing system distributor 'Microsoft Corp.', version 10.0.19044
System Description: Microsoft Windows 10 Pro (v10.0.2009.19044.2604)
Configured using:
'configure --with-modules --without-dbus --with-native-compilation
--without-compress-install CFLAGS=-O2'
Configured features:
ACL GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND THREADS TIFF TOOLKIT_SCROLL_BARS
XPM ZLIB
(NATIVE_COMP present but libgccjit not available)
- bug#62275: 28.2; Changing major mode changes the current text scaling,
Drew Adams <=
- bug#62275: 28.2; Changing major mode changes the current text scaling, Eli Zaretskii, 2023/03/19
- bug#62275: 28.2; Changing major mode changes the current text scaling, Drew Adams, 2023/03/19
- bug#62275: 28.2; Changing major mode changes the current text scaling, Eli Zaretskii, 2023/03/19
- bug#62275: 28.2; Changing major mode changes the current text scaling, Drew Adams, 2023/03/19
- bug#62275: 28.2; Changing major mode changes the current text scaling, Eli Zaretskii, 2023/03/20
- bug#62275: 28.2; Changing major mode changes the current text scaling, Drew Adams, 2023/03/20
- bug#62275: 28.2; Changing major mode changes the current text scaling, Eli Zaretskii, 2023/03/20
- bug#62275: 28.2; Changing major mode changes the current text scaling, Drew Adams, 2023/03/20