Re: [RFC] send-email: avoid duplicate In-Reply-To and References headers

Eric Wong [off-list ref] writes:

Junio C Hamano [off-list ref] wrote:

quoted

I think it is sensibleto give priority to the --in-reply-to option
given from the command line over the in-file one.  I am not sure if
we want to drop references, though.  Wouldn't it make more sense to
just add what we got from the command line to what we read from the
file?  I dunno.

You're right, existing References in the bodies should probably
be prepended to current ones, as their order should be
oldest-to-newest.

If you were to go that way, it may also make sense to demote the
original In-Reply-To you find in the file to an entry in the
References list, if it does not already appear there.

I didn't check the RFCs, but I think your original motivation is to
ensure that there is not more than one messages to which the current
message is replying to, iow, to ensure that there is only one message
that is In-Reply-To, so appending would not be a good solution there.