Re: %destructor and unused values

[John P. Hartmann]

But here is another one:

               |  dotobyfors dotobyfor { listend($1, $2); }

Gets "warning: unset value: $$".

I'm relying on the default $$ = $1 here.

Or is there something more subtle going on?  Or (shudder) is the
default applied only when there is no explicit semantic code?  (In
which case I have a lot of grammars to fix.)