strange or inconsistent parsing of multiple return values

Bugzilla Link	925
Created on	Mar 01, 2012 13:11
Resolution	WORKSFORME
Resolved on	Apr 21, 2012 18:46
Version	1.00beta
OS	Linux
Architecture	PC

Extended Description

The multiple-return value parsing feels strange in several respects.
First it requires parentheses. C doesn't require parentheses for
a return value. One can write:
   return value;
But in SAC this doesn't work for multiple return values:
ABORT: line 11  file: testcomma.sac
ABORT: syntax error at pos 13: ',`
ABORT:     return a, b;
ABORT:             ^
This code works when it is changed to "return (a, b);".
Second the multiple return value cannot be used
in combination with the ternary conditional operator:
ABORT: line 13  file: testcomma.sac
ABORT: syntax error at pos 26: ',`
ABORT:     return ((k <= 1) ? (a, b) : (c, d));
ABORT:                          ^
To make this code work one has to revert to tedious code like:
    e = (k <= 1) ? a : c;
    f = (k <= 1) ? b : d;
    return (e, f);