On Mon, 14 Dec 2020 11:56:53 +0000, Seymour J Metz wrote:
>Yes - you only have one level of expansion.
>
And doubled ampersands in the PARMDD file are not collapsed.
This is documented.
I have found that there is a circumvention for the convention that
prohibits using JCL symbols in quoted strings in the SET statment.
Something like:
// SET Q='''',X='Middle'
// SET TRIAD=&QLEFT&X.&RIGHT&Q
Of course that is covered by the rule:
• Do not specify JCL symbols within other JCL symbols. The results can be
unpredictable, especially if the imbedded JCL symbol is not previously
defined.
"unpredictable" is feckless engineering. IBM simply doesn't care to document
the
behavior lest IBM be subject to SRs when the system transgresses such rules.
The JCL Ref. has 18 pages describing the behavior of symbols, mostly exceptions.
This is a symptom of design inconsistency -- Conway's Law.
>________________________________________
>From: Paul Gilmartin
>Sent: Sunday, December 13, 2020 3:43 PM
>>
>It's time for an RFE for the equivalent of HLASM's DOUBLE BIF. No "Maybe".
>
>Does PARMDD handle this better?
-- gil
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