[PATCH 0/7] correctly calculate patches to rebase

These seven patches replace the broken one I sent in http://thread.gmane.org/gmane.comp.version-control.git/200644/focus=200648. I hope I got the handling of empty commits right this time.

Martin von Zweigbergk (7):
  git-rebase--am.sh: avoid special-casing --keep-empty
  git-rebase--interactive.sh: extract function for adding "pick" line
  git-rebase--interactive: group all $preserve_merges code
  git-rebase--interactive.sh: look up subject in add_pick_line
  rebase -p: use --cherry-mark for todo file
  rebase -p: don't request --left-right only to ignore left side
  rebase (without -p): correctly calculate patches to rebase

 git-am.sh                  | 10 +++++-
 git-rebase--am.sh          | 20 +++--------
 git-rebase--interactive.sh | 87 ++++++++++++++++++++--------------------------
 git-rebase--merge.sh       |  2 +-
 git-rebase.sh              | 11 +++---
 t/t3401-rebase-partial.sh  | 17 +++++++++
 t/t3406-rebase-message.sh  | 14 ++++----
 7 files changed, 81 insertions(+), 80 deletions(-)