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Re: [PATCH] strftime: support %q to output the quarter of year
On 04/11/16 12:23, Pádraig Brady wrote:
> On 04/11/16 12:07, Szabolcs Nagy wrote:
>> On 04/11/16 12:00, Pádraig Brady wrote:
>>> On 04/11/16 11:41, Szabolcs Nagy wrote:
>>>> On 03/11/16 19:46, Pádraig Brady wrote:
>>>>> This is already supported by gnulib.
>>>
>>>> why?
>>>
>>> It's a marginal benefit, but as
>>> noted in the cover of my updated patch:
>>>
>>> "Note even though the code is trivial here,
>>> %q is useful from the shell as there you need to:
>>> $(( ($(date +%-m)-1)/3+1 ))".
>>>
>>> I'll add that to the actual commit.
>>
>> this can conflict with future standard, so
>> there need to be a strong reason for adding
>> such extensions to portability libraries
>> such as gnulib or to c runtimes.
>>
>> how does gnulib plan to deal with the conflict
>> once posix adds %q with different meaning?
>
> Perl's date lib also uses %q for quarter.
i don't know what "Perl's date lib" is,
the perl DateTime module does not seem to support %q.
https://metacpan.org/pod/DateTime#strftime-Patterns
> So between that and gnulib (and glibc?)
> POSIX would be unlikely to choose %q for something else.
> In any case I intend to propose it to the POSIX folks.
>
> thanks,
> Pádraig
>