[PATCH v4 0/4] Add --graft option to git replace

Here is a small patch series to implement:

        git replace [-f] --graft <commit> [<parent>...]

This patch series goes on top of the patch series that implements --edit.

The changes since v3, thanks to Junio, are:

- remove function read_sha1_commit() and its call as well as a
  call to parse_commit_buffer(), as lookup_commit_or_die()
  already reads the commit buffer and parses it (patch 1/4)

- source git-sh-setup and other small cosmetic changes in
  convert-grafts-to-replace-refs.sh (patch 4/4)

Christian Couder (4):
  replace: add --graft option
  replace: add test for --graft
  Documentation: replace: add --graft option
  contrib: add convert-grafts-to-replace-refs.sh

 Documentation/git-replace.txt             | 10 +++++
 builtin/replace.c                         | 62 ++++++++++++++++++++++++++++++-
 contrib/convert-grafts-to-replace-refs.sh | 28 ++++++++++++++
 t/t6050-replace.sh                        | 12 ++++++
 4 files changed, 111 insertions(+), 1 deletion(-)
 create mode 100755 contrib/convert-grafts-to-replace-refs.sh