The rule and the warning was for
user-defined macros,
Werner's point was, I believe, that the documentation erroneously said
the empty braces were "consistent with all other Texinfo commands". I
actually had already taken out the "all" at some point recently, it
seems. Anyway.
No problem with that. I remember adding this warning after some
discussion on this list happened.
I do too, now that you mention it. Guess I should look that up.
So, no warning at all, no more warning only if the user-defined
macro has no arguments?
Will ponder.
Werner, your input on what to do is welcome :).
Thanks,
Karl