Re: [PATCH v2 2/2] trailer: support multiline title

[Junio C Hamano <gitster@pobox.com>]

Christian Couder <christian.couder@gmail.com> writes:

> There is already code to detect a patch in interpret-trailers, but it
> relies on the patch starting with a line with only three dashes.

Hmm, then it can be taught to notice "everything below..." as
another marker, right?

> Maybe. I don't know if there is a reason why the commit-msg is called
> before removing the patch.

Is that "removing", or are you talking about changing the order from

 - prepare log template in-core
 - add comments and patch to that in-core copy
 - write in-core copy out
 - run hook
 - read the hook's result in-core
 - use the message

to

 - prepare log template in-core
 - write in-core copy out
 - run hook
 - read the hook's result in-core
 - add comments and patch to that in-core copy
 - use the message

While the reordering would certainly stop showing the comments and
patch, I am not sure if that is a move in the right direction.  It
will rob from the hooks information that they have traditionally
been given---it will break some hooks.

But if interpret-trailers is almost there to reliably know where the
log message ends, teaching it the one last step would be the right
thing to do anyway.  After all, interpret-trailers was invented
exactly because we did not want individual hooks to roll their own
ways to detect the end of the message proper, so the command should
know where the message ends.