bug#64177: outline-minor-mode-highlight fails to activate for custom headings

[Juri Linkov]

> I have made custom headings for outline-minor-mode
>
> But
>
> (setq outline-minor-mode-highlight 'override)
>
> does not succeed in displaying the foreground colours at the
> defined levels when using
>
> (set-face-foreground "outline-1" "#ff62d4")
> (set-face-foreground "outline-2" "#9f80ff")
> (set-face-foreground "outline-3" "#fe6060")
>
> Yet, the colours get properly displayed for the default headings
> for the specific major mode

Thanks for the bug report.  It's still not clear how to test it.
When tried to evaluate (set-face-foreground "outline-1" "#ff62d4")
it failed with Lisp error: (wrong-type-argument symbolp "outline-1")
because the right syntax is (set-face-foreground 'outline-1 "#ff62d4").
Does it work with this fix?