On Wed, 27 May 2020 23:29:23 +0800, David Crayford wrote:
>>> // ...
>> This moved me to look up DSN syntax in the JCL Ref.
>> It's chaos; I detect no plan in the design; it was put
>> together One Piece At A Time:
>> https://www.youtube.com/watch?v=060A15ELz00
>Agreed! I had to write a program to create JCL that wrapped the UNIX
>path names over multiple lines. It beggars belief but it is what it is I
>suppose!
>
Yup.
o Especially when generating JCL with a program. A symbol
can't be split over a continuation. The converter does things
in the wrong order; it should first join continuations, then
resolve symbols. It may be necessary to insert several symbols
that evaluate to empty string earlier in the argument in order
that no symbol is split. And there's no upward-compatible fix.
o And why does allocation limit DALPATH to 255 bytes when:
- The OMVS limit is much larger?
- The count field in the TU is 16 bits?
As I said, One Piece At A Time:
https://www.youtube.com/watch?v=060A15ELz00
... with a dash of Conway's Law.
--gil
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