Date: Sun, 4 Jun 2023 15:00:01 +0100
From: Jimmy Wong <wyuenho@gmail.com>
Cc: 63891@debbugs.gnu.org
This branch: https://github.com/emacs-mirror/emacs/blob/emacs-29/lisp/cus-edit.el#L1109
I don't know what that is. I'm using the Emacs Git repository, the
emacs-29 branch.
No it does not saves only one variable to file, it only saves one variable to file if you have only modified
one variable.
That's not what I see. I've modified several options using the
menu-bar's Options menu, then typed
M-x customize-save-variable RET truncate-lines RET y
and saw that only truncate-lines was written to the custom file.
If you see something else, please show a complete recipe that
reproduces the behavior you see.
As a matter of fact, custom-variable-save, custom-variable-mark-to-reset-standard,
custom-face-save, custom-face-mark-to-reset-standard and custom-group-save all have the same
problem. They all call custom-save-all and they all dump all modified customizable variable values on
file without regard to whether it’s a single variable, face or a group the user asked Emacs to save.
I wasn't talking about custom-save-all -- that indeed saves all the
options customized in this session. I was talking about
customize-save-variable, which prompts for a single variable and its
value, and saves only that single variable, at least in my testing.