On Mon, 31 Mar 2014 10:56:20 -0500, John Gilmore wrote:
>
> IF ARG = NULL then RETURN(SYSNULL) ; ELSE RETURN (ARG) ;
>
Just curious; what ambiguous interpretations of
IF ARG = NULL then RETURN SYSNULL ; ELSE RETURN ARG ;
... would be possible? Rexx, which tends more toward reserved words than PL/I
accepts:
user@MVS:143$ rexx "trace R; ARG = 42; IF ARG = NULL then RETURN SYSNULL ;
ELSE RETURN ARG ;"
1 *-* ARG = 42
>>> "42"
*-* IF ARG = NULL
>>> "0"
*-* ELSE
*-* RETURN ARG
>>> "42"
-- gil
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