bug#35476: font-lock-{append, prepend}-text-property and anonymous faces

[Noam Postavsky]

Kévin Le Gouguec <kevin.legouguec@gmail.com> writes:

> Now that Stefan committed a fix to Emacs 27, and Nicolas a workaround
> to org-mode, this bug report can probably be closed; I just have a few
> questions left:
>
> 1. Shouldn't Stefan's fix also be applied to
>    font-lock-append-text-property?
>
> 2. Is it worth adding the test suite I posted in bug#35476#8 to the
>    Emacs repository?

I'd say the answers are yes and yes.  So would you mind adding the fix
for font-lock-append-text-property to your patch?