> So despite the beauty of > > @a [+] @b > > I think it cannot survive in its current form. It overloads square > brackets too heavily.
What about using colon thus:
@a [:+] @b
or other character after the opening bracket, so long as that
character is not valid as the initial character of a prefix op or
term.
There's also:
@a []+ @b
--
ralph
