Re: Consistent face for keys in *Help* and `substitute-command-keys'

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Thu, 25 Feb 2021 12:48:37 -0600
> Cc: larsi@gnus.org, emacs-devel@gnu.org
> 
> >> 2. M-: (insert (propertize "foo" 'help-echo "foo \\[forward-line]")) RET
> >>
> >> No visible effect on the tooltip --with-x-toolkit={gtk,lucid,athena,no}.
> >
> > And the face for keys is defined how?
> 
> (defface help-key-binding '((t :foreground "RoyalBlue3"))
>   "Face for keybindings in *Help* buffers."
>   :version "28.1"
>   :group 'help)

Ah, okay: you are putting the 'face' property, but so does
'tooltip-show'.  So yes, the latter one overrides the former one.

So I guess we will need to change the design of this to avoid
overriding the whole face of a tooltip, or maybe add some special code
to help_echo_substitute_command_keys.