Glenn Knickerbocker wrote on 7/5/2023 3:27 PM:
And then there's the weird one that wasn't on the standard 3270 keyboard: x'c0' is valid in data set names (but not catalog entries, so it can only be used in uncataloged data sets) and member names. It's a left-bracket in some pages, [...] The JCL Reference specifies it at https://www.ibm.com/docs/en/zos/2.5.0?topic=definition-unqualified-name as "a character X'C0'", not by appearance at all.
That curly thing is a brace, not a bracket. (Therefore, "Square bracket" is redundant.)
It's sort of a distant memory, but I'm nearly certain that pre-SMS you could catalog a data set with a X'C0' in the name, just not as the first character after a dot. Trying it now on z/OS 2.5, with DISP=(NEW,CATLG),DSN=...BRACE{ and a non-SMS STORCLASS, it created the data set but didn't catalog it: "NOT CATLG 9". Seems that every few years IBM changes the way this works or doesn't.
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