Re: Improving Scroll Bar Tools

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sat, 11 May 2024 15:38:54 +0000
> From: Heime <heimeborgia@protonmail.com>
> Cc: help-gnu-emacs@gnu.org
> 
> > You are mixing two different levels of functions. scroll-bar-mode and
> > horizontal-scroll-bar-mode are user commands, whereas
> > set-window-scroll-bars is a Lisp function. If there is a
> > contradiction between them, it is a problem for the user-level
> > functionality which mixes them, and it is up to that user-level
> > functionality (presumably, some code you have written) to fix the
> > problem, whatever it is.
> 
> How do users change the scroll bars of specific windows ?

There's no Emacs feature currently to do that (but maybe there are
third-party packages out there offering such capabilities).

> > Since scroll-bar-mode and horizontal-scroll-bar-mode are minor modes,
> > they each one have a hook, which could be used to turn off
> > window-specific scroll bars. However, I don't recommend that because
> > that would prevent users from having window-specific scroll bars that
> > do not heed to frame-global settings. IOW, you will be coding a
> > feature that works against documented Emacs behavior.
> 
> Ok, you want the minor modes not to affect window-specific scroll bars that
> users customised. 

That is the current arrangement, yes.  Window-specific scroll bars
take precedence over the frame-global settings.