On Thu, Mar 14, 2019 at 9:47 PM Junio C Hamano <gitster@xxxxxxxxx> wrote:
>
> Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:
>
> > While it's true that header ordering isn't specified, there's a common
> > "canonical" order that the headers are listed in. To quote rfc822:
> > ...
> > body must occur AFTER the headers. It is recommended
> > that, if present, headers be sent in the order "Return-
> > Path", "Received", "Date", "From", "Subject", "Sender",
> > "To", "cc", etc.
>
> I obviously won't do the last one myself, but if the issue is only
> to swap from and date, then this may be sufficient, perhaps?
I'm not actually sure _what_ the order requirements for gmail are,
since gmail itself doesn't seem to honor them. Does the order of the
Message-ID header line matter, for example?
I don't think it's the order of the From/Date lines, actually, because
google itself doesn't do that.
What Thomas Found out was that the exact same email with
Message-Id/From/Date/Subject/To
(in that order) does not work, but
Date/From/Subject/To/Message-Id
does work. Weird and "wonderful". But there might be a lot of other
orderings that work or don't.
Having looked through some other emails, I know that
From/To/Subject/Date/Message-Id
Subject/To/References/From/Message-ID/Date
also works. Which makes me suspect that it's the Message-ID line that matters.
But it might be something _really_ odd, and maybe not just ordering at
all (ie it might be something where gmail wants to see the "From"
line, but only in certain circumstances, and only *then* does it
matter if the From line comes before some other line or not.
All we know is
(a) gmail complains about the normal git format-patch ordering with a
"no From line" bounce
(b) the same email with just headers re-ordered goes through
I *suspect* it's that Message-ID line, but .... It's very annoying.
Linus
