date(1) default format changed between 10.3 and 11.0-BETA3

[Andrey Chernov]

On 05.08.2016 18:44, Mark Martinec wrote:
> On 2016-08-05 17:23, Andrey Chernov wrote:
>> On 05.08.2016 17:47, Mark Martinec wrote:
>>> [Bug 211598]
>>>   date(1) default format in en_EN locale breaks compatibility with 10.3
>>> and violates POSIX
>>>
>>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211598
>>
>> It breaks compatibility but not violates POSIX. POSIX care of only its
>> own POSIX (or C) locale.
> 
> POSIX does say that the default format should be the same
> as with "+%a %b %e %H:%M:%S %Z %Y".
> It also says that %a and %b are locale's abbreviated names.

It is true for _POSIX_ locale only, as I already say. en_US.* is not
POSIX or C locale.

> It may not say what an abbreviated name really looks like
> in a particular locale, but it does distinguish between
> full and abbreviated names.

It says nothing about other locales. Current format comes from CLDR, ask
bapt@