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bug#57459: Customisation before enabling display-fill-column-indicator-m
From: |
Eli Zaretskii |
Subject: |
bug#57459: Customisation before enabling display-fill-column-indicator-mode |
Date: |
Sun, 28 Aug 2022 18:02:08 +0300 |
> Date: Sun, 28 Aug 2022 16:38:55 +0200 (CEST)
> From: wilnerthomas@tutanota.com
> Cc: 57459@debbugs.gnu.org
>
> Aug 28, 2022, 14:14 by eliz@gnu.org:
>
> > Please show how you tried doing that, starting from "emacs -Q". There
> > are many possible ways of customizing face attributes, and we need to
> > know which one you found not functioning in this case.
> >
> I made the following function
>
> (defun indicator-attributes ()
>
> (setq display-fill-column-indicator-character ?\u2503)
>
> (set-face-attribute 'fill-column-indicator nil :background "green"
> :height 1.0))
>
> I have another function to enable global-display-fill-column-indicator-mode
>
> (defun colum-indicator ()
> (interactive) (global-display-fill-column-indicator-mode))
>
> If I call (indicator-attributes) in my init file, then do "M-x
> colum-indicator" in a buffer, I get the old character.
>
> But if I change colum-indicator to include (indicator-attributes) after
> setting the global mode, I get
> the correct wider character if I do "M-x colum-indicator" in a buffer.
>
> (defun colum-indicator ()
>
> (interactive) (global-display-fill-column-indicator-mode)
> (indicator-attributes))
It's the same issue as with fill-column:
display-fill-column-indicator-character is a variable that
automatically becomes buffer-local when set (see its doc string). So
your setq is in effect only for a single buffer: the one in which
Emacs loads and evaluates the init file.
You should use setq-default instead.
This is not a bug.