bug#81638: 32.0.50; flyspell-prog-text-faces type and semantics

> From: Stefan Monnier <[email protected]>
> Cc: Michael Heerdegen <[email protected]>,  Sean Whitton
>  <[email protected]>,  [email protected]
> Date: Tue, 18 Aug 2026 14:25:39 -0400
> 
> > And if all of the above is not enough, and you still insist, I could
> > agree to adding nil to the valid values (but then please suggest a
> > suitable :tag),
> 
> BTW, there can be other good reasons to use a value not covered by the
> current `:type`, e.g. it can make a lot of sense to put `sh-heredoc` or
> `perl-heredoc` in there.

AFAIU, those are not normally human-readable text, so I'm not sure
what sense you are seeing in doing that.

> >> But I wonder if we should, in addition, generalize
> >> `flyspell-generic-progmode-verify' so that members of
> >> `flyspell-prog-text-faces' are allowed to be functions (test
> >> predicates).
> > If you want to do that, it is better (and easier) to override
> > flyspell-generic-progmode-verify with your own function.
> 
> You mean set `flyspell-generic-check-word-predicate`?

That's one way, yes.  But if someone wants to use flyspell-prog-mode,
the variable is already set.