joel@decwrl.UUCP (Joel McCormack) (02/22/85)
From Mark Wittenberg:
- My enthusiasm was tempered when I noticed that it does NOT allow "ptr^^";
- you must use a run-time temp variable. Anybody know why the change?
The EBNF production is
designator = qualident {"." ident | "[" ExpList "]" | "^"}.
Since {} means 0 or more times, qualident^^^^^^^^^^^^^^ is perfectly legal.
I've never actually had occasion to use this construct. I don't know of any
reason why a specific implementation of Modula-2 would restrict this.
--
- Joel McCormack {ihnp4 decvax ucbvax allegra}!decwrl!joel
joel@decwrl.arpa