Re: [RFC/PATCH] Add interpret-trailers builtin

[Christian Couder <chriscool@tuxfamily.org>]

From: Junio C Hamano <gitster@pobox.com>

> Christian Couder <christian.couder@gmail.com> writes:
> 
>> To append a s-o-b only if there is no s-o-b already, one would need to use:
>>
>> [trailer "signoff"]
>>          key = "Signed-off-by:"
>>          if_exist = dont_append
>>          if_missing = append
>>          command = echo "$GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>"'
> 
> But that is insufficient to emulate what we do, no?  I.e. append
> unless the last one is from the same person we are about to add.

Yeah, but, with DONT_REPEAT_PREVIOUS, it would be possible using:

[trailer "signoff"]
         key = "Signed-off-by:"
         if_exist = dont_repeat_previous
         if_missing = append
         command = echo "$GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>"'

Cheers,
Christian.