Ludovic Courtès <ludo@gnu.org> writes:

> Could it be that the .texi files in guile-sdl2 and guile-opengl lack
> proper @dircategory and @direntry markup?
>
> Ludo’.

You are right, actually all programs by Dave Thompson
(https://dthompson.us/) lack that markup.  I've reported it to him.

That said, I've never really understood why Texinfo does not "do the
right thing" there and generates the entry automatically.

--
Pierre Neidhardt

If at first you fricasee, fry, fry again.