Support non-POSIX TZ strings

[Brian Inglis]

On 2022-02-14 12:58, jdoubleu wrote:
> Thanks for the quick response!
> 
>  > [..] but we should start with the actual POSIX spec under TZ
> Yes, that is exactly what I meant: Newlib supporting the <> (angle 
> brackets) syntax.
> I didn't know that it was actually part of POSIX spec, since so many 
> libs actually don't implement it.
> 
>  > The BSD or TZcode implementations could probably be adapted [..]
> It looks like the TZcode implementation by Paul Eggert uses a different 
> approach to parsing the strings, than the current implementation in 
> newlib 
> (https://sourceware.org/git/?p=newlib-cygwin.git;a=blob;f=newlib/libc/time/tzset_r.c). 
> I'm not sure, if you want to copy the code over or use changes by e.g. 
> Earle F. Philhower from 
> https://github.com/earlephilhower/newlib-xtensa/pull/14.

That patch includes the angle bracket quotes < > in the STD and DST 
abbreviations, but the abbreviations are only contained *within* the 
quotes, which should *NOT* be included in the abbreviations.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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