Re: [PATCH v2 0/3] format-patch: introduce option to suppress commit hashes

[Jeff King <peff@peff.net>]

On Sun, Dec 13, 2015 at 05:27:15PM +0000, brian m. carlson wrote:

> git format-patch is often used to create patches that are then stored in
> version control or displayed with diff.  Having the commit hash in the
> "From " line usually just creates diff noise in these cases, so this
> series introduces --zero-commit to set that to all zeros.
> 
> Changes from v1:
> * Rename the option --zero-commit.
> * Improve the tests to look for a 40-hex hash value in "From " header.
> 
> brian m. carlson (3):
>   Introduce a null_oid constant.
>   format-patch: add an option to suppress commit hash
>   format-patch: check that header line has expected format

The intent here makes sense to me, and with the exception of the
test_line_count thing that Torsten mentioned, the code looks good.

I briefly wondered if the option should simply be "--diffable" or
something like that, and trigger this new behavior as well as implying
--no-signature. Along with any other relevant options (if any; I don't
recall if --stat-width is terminal-dependent for format-patch, for
example).

But that is probably overkill. People can flip those switches
individually if they want to (and even if somebody did want
"--diffable", it may make sense to build it on top, so they can flip the
zero-commit thing individually if they want).

-Peff