https://en.wikipedia.org/wiki/EBCDIC
Code page layout shows the invariant characters and
the frequently used locations for some frequently used characters.

On Fri, Jul 7, 2023 at 6:55 PM Matt Hogstrom <m...@hogstrom.org> wrote:
>
> Matt Hogstrom
> PGP key 0F143BC1
>
> >> On Jul 7, 2023, at 19:14, Paul Gilmartin 
> >> <0000042bfe9c879d-dmarc-requ...@listserv.ua.edu> wrote:
> >>
> > On Fri, 7 Jul 2023 18:11:39 -0400, Matt Hogstrom wrote:
> >
> >> Speculation on my part but I think CP1047 was created in part to allow for 
> >> square brackets given their use in new programming languages at x’AD’ = 
> >> ‘[‘ and x’BD’ = ‘]’
> >>
> >> Those characters were not in 037 that I can find ...
> >>
> > They are in 037 <https://www.ibm.com/support/pages/ccsid-comparisons>:
> >    BA    left bracket
> >    BB    right bracket
>
>
> See reference to Wikipedia below .. you’re right although they refer to the 
> updated code page 037/0
>
> >
> >> ...but apparently there are multiple versions of that 037.
> >>
> > WTF!?  That makes as little sense as "multiple versions of π."
>
> I agree.  Per the most authoritative source of truth on the planet Wikipedia 
> says (sarcasm implied),   https://en.m.wikipedia.org/wiki/Code_page_37
>
> Code page 37 exists in two versions:  a "base character set" or "DP94" 
> version (GCSGID 101 with CPGID 37, or CCSID 8229), containing only 94 
> graphical characters (plus the space and control codes),  and a "CECP" 
> (Country Extended Code Page) version (GCSGID 697 with CPGID 37, or CCSID 37) 
> with expansions to support the entire ISO/IEC 8859-1 repertoire.
>
> >
> >> I recall writing in SAS C back in the late 80’s and had to use ‘(|’ for [ 
> >> and ‘|)’ for ] and it was a PITA the code that way.
> >>
> > They may not have appeared on various output devices, but that is hardly 
> > solved
> > by introducing an additional code page.
>
> Like I said, speculation on my part but at that time on my MVS/XA system 
> there were no brackets available.  I agree, hardly justification.  However, 
> all the code pages and versions of codepages is a bit convoluted.
>
> >
> > --
> > gil
> >
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-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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