Re: New line and trailing whitespaces

[Eli Zaretskii]

> Date: Wed, 24 Apr 2024 04:41:26 +0200
> From: Ergus <spacibba@aol.com>
> Cc: help-gnu-emacs@gnu.org
> 
> I tried this.
> 
> (with-eval-after-load 'whitespace
>    (setq whitespace-style '(faces tab-mark)
>       whitespace-display-mappings `((tab-mark ?\t [,(make-glyph-code ?» 
> 'whitespace-tab) ?\t] ))
>       ))
> (whitespace-mode 1)
> 
> But I only get the error:
> 
> wrong-type-argument number-or-marker-p (187 . 235)
> 
> Some idea what I am doing wrong?

It's a bug in whitespace.el, which I just fixed on the master branch:
it didn't work correctly with glyph codes.  You seem to have a lot of
faces defined (more than 64 of them), so you bumped into this corner
case.