Re: [PATCH v1] am: fix signoff when other trailers are present

[Phillip Wood <phillip.wood@talktalk.net>]

On 07/08/17 18:49, Junio C Hamano wrote:
> Phillip Wood <phillip.wood@talktalk.net> writes:
> 
>> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>>
>> If there was no 'Signed-off-by:' trailer but another trailer such as
>> 'Reported-by:' then 'git am --signoff' would add a blank line between
>> the existing trailers and the added 'Signed-off-by:' line. e.g.
>>
>>     Rebase accepts '--rerere-autoupdate' as an option but only honors
>>     it if '-m' is also given. Fix it for a non-interactive rebase by
>>     passing on the option to 'git am' and 'git cherry-pick'.
>>
>>     Reported-by: Junio C Hamano <gitster@pobox.com>
>>
>>     Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
>>
>> Fix by using the code provided for this purpose in sequencer.c.
>> Change the tests so that they check the formatting of the
>> 'Signed-off-by:' lines rather than just grepping for them.
>>
>> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
>> ---
>> I'm not sure if this should be calling ignore_non_trailer() or not -
>> git commit does but git cherry-pick does not. This follows commit and
>> cherry-pick in ignoring the value of trailer.ifExists for the signoff.
>> I'm a bit surprised they do that - is it correct?
> 
> These built-in "sign-off" machinery long predates the "trailer"
> thing, so I am not surprised if they do not behave the same.  I
> vaguely recall having discussions on this earlier this year, but
> details escape me.  

Ah, that explains it. I did a quick search on public-inbox but didn't
turn up any obvious discussion about --signoff and trailer config. If
that's the behavior people are used to then lets leave it as it is
unless there is a call for it to be changed.

> Asking Jonathan, who did a series that ends at 44dc738a ("sequencer:
> add newline before adding footers", 2017-04-26), and Christian, who
> is the original contirbutor to the "trailer" machinery, for input.
>