Re: [PATCH v13 00/12] port tag.c to use ref-filter APIs

> Junio C Hamano <gitster@pobox.com> writes:
>
>> Junio C Hamano <gitster@pobox.com> writes:
>>
>>> Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> writes:
>>>
>>>>> For the current code %(if:empty)%(align)%(end)%(then)Empty%(else)Not Empty%(end)
>>>>> would print non-empty, I guess the documentation holds in that case.
>>>>> Not sure if we require it to print non-empty.
>>>>
>>>> You don't want the %(if) condition to depend on whether
>>>> --shell/--python/... is used. Since %(if:empty)%(align)%(end)%(then)
>>>> holds when you don't use --shell, you also want it to hold when you
>>>> quote. IOW, you should check for emptyness before (or actually without)
>>>> doing the quoting. I guess this is what you're doing, and if so, I think
>>>> it's "The Right Thing".
>>>
>>> I agree that %(align)%(end) should expand to empty and %(if:empty)...%(then)
>>> should look at that empty string without quoting.  So
>>>
>>>     %(if:empty)%(align)%(end)%(then)Empty%(else)Not Empty%(end)
>>>
>>> should give "Empty"; otherwise the code is buggy, I think.
>>
>> (I shouldn't be typing while eating...)
>>
>> It should give "Empty", but the --shell/--python/... may make the
>> whole "Empty", as the result of %(if:...)...%(end), be quoted.  So
>> you may see "'Empty'" in the output.
>
> Agreed (with both points).
>