Mauro Aranda <maurooaranda@gmail.com> writes:

>> Nope.  Would fixing info-lookup-guess-custom-symbol here be a lot of work?
>
> I'm guessing no, because it shouldn't have to guess anymore...but I'm
> not familiar with it.

Actually...  Is this a regression?  I just tried this in Emacs 27, and
`C-h S' on "Fill Column" there asks me: