I thought of writing a reply, but instead I wrote it in patch form.

Stefan Beller (2):
  [DO NOT APPLY, but squash?] git-rebase--interactive: clarify arguments
  [DO NOT APPLY, but improve?] rebase--interactive: introduce "stop"
    command

 git-rebase--interactive.sh | 23 ++++++++++++-----------
 sequencer.c                | 10 ++++++++++
 2 files changed, 22 insertions(+), 11 deletions(-)

-- 
2.16.0.rc1.238.g530d649a79-goog