Re: [RFC PATCH 0/5] format-patch: automate cover letter range-diff

> Dscho recently implemented a 'tbdiff' replacement as a Git builtin named
> git-branch-diff[1] which computes differences between two versions of a
> patch series. Such a diff can be a useful aid for reviewers when
> inserted into a cover letter. However, doing so requires manual
> generation (invoking git-branch-diff) and copy/pasting the result into
> the cover letter.
> 
> This series fully automates the process by adding a --range-diff option
> to git-format-patch. 

> 
> Eric Sunshine (5):
>   format-patch: allow additional generated content in
>     make_cover_letter()
>   format-patch: add --range-diff option to embed diff in cover letter
>   format-patch: extend --range-diff to accept revision range
>   format-patch: teach --range-diff to respect -v/--reroll-count
>   format-patch: add --creation-weight tweak for --range-diff
> 
>  Documentation/git-format-patch.txt |  18 +++++
>  builtin/log.c                      | 119 ++++++++++++++++++++++++-----
>  t/t7910-branch-diff.sh             |  16 ++++
>  3 files changed, 132 insertions(+), 21 deletions(-)