Re: email as a bona fide git transport

> 
> On 10/20/19 5:17 AM, Willy Tarreau wrote:
>> On Fri, Oct 18, 2019 at 03:14:56PM -0400, Theodore Y. Ts'o wrote:
>>> On Fri, Oct 18, 2019 at 06:50:51PM +0200, Vegard Nossum wrote:
>>>> The problem I ran into with putting the metadata at the end was
>>>> detecting where the diff ends. A comment in 'git apply' suggested that
>>>> detecting the difference between "--" as a diff/signature separator and
>>>> as part of the diff is nontrivial in the sense that you need to 
>>>> actually
>>>> do some parsing and keep track of hunk sizes.
>>>
>>> Could we cheat by having "git format-patch" add a "Diff-size" in the
>>> header which gives the number of lines in the diff so git am can just
>>> count lines to find the Trailer section?
>>
>> Be careful with this, it starts like this and ends up with non-editable
>> patches. I'd rather have git-am use best-effort detection of the end.
> 
> Expect filesystem developers to come up with a format that uses extents ;-)
> 
>> Also when dealing with stable backports, I've done a lot of
>> "cat foo.diff >> bar.patch" to fixup some patches in which I just had
>> to move some parts around. Having to count lines and edit a counter
>> somewhere is going to become really painful.
> 
> I almost have some new patches ready for putting the metadata after the
> patch using a very bare-bones diff parser (it's actually not that bad),
> I just need to fix a few corner cases that are causing breakage in the
> git test suite.