On Thu, 8 May 2025 12:29:30 +0200, Radoslaw Skorupka wrote:
>    ...
>Update: since few years the delimiter in can be 2 to 18 characters long.
>(it applies to JES2, not JES3).
>    ...
(Some argument here for ISVs to test customer-facing JCL
on both JES2 and JES3.

>18 characters.
>IMHO it's enough to find unique string.
>
 18 bytes from /dev/random.  10**43 possibilities.  Need to quote it.
Does the 18 count paired apostrophes and ampersands?  JES
lexical analysis is chaotic: Conway's Law.

>It's more than enough to find a string which is not a part of any
>programming language, command language or any human language.
>Of course there's still possibility to use DD * for binary or generated
>random data, but in real world I would call it very unlikely use of DD *.
>
I faced the task when the limit was 2, and I wanted to code an instream
 NETDATA file for INDD.  I scanned for an absent  digraph.

-- 
gil

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