bug#33740: [PATCH] Customizable flymake mode-line indicator

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: joaotavora@gmail.com,  33740@debbugs.gnu.org,  andreyk.mad@gmail.com
> Date: Tue, 17 Sep 2019 14:22:27 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Apply the properties judiciously to specific parts of the mode-line
> > string, not wholesale to all of it.
> 
> That's what I did (or tried to do).  I basically made the function
> return something like
> 
> (concat "foo" (propertize "bar" 'face 'bold) "zot")
> 
> but the "bar" remained non-bold in the mode line.  If that's supposed to
> work, then there's something else wrong with my code, I guess?

Most probably, but a bare-bones minimal Lisp to run and investigate
will be appreciated.