[tz] [PROPOSED 2/2] strftime: conform better to POSIX+

[Paul Eggert]

On 8/9/20 9:32 AM, Robert Elz wrote:
> pass the "+fmt" arg to strftime, unaltered.

Thanks, I hadn't thought of that trick. I installed the attached patch to do it.

I remain convinced that an ERANGE errno is useful, though. General-purpose 
routines don't always have the luxury of knowing that format[-1] is available.
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