[PATCH 0/4] Fix diff-files output for unmerged paths

This is cleaned-up series of my previous attempts that were queued in 'pu' late in the pre-1.7.5 cycle.

Junio C Hamano (4):
  test: use $_z40 from test-lib
  diff.c: return filepair from diff_unmerge()
  diff: remove often unused parameters from diff_unmerge()
  diff-files: show unmerged entries correctly

 diff-lib.c                       |   15 +++++--
 diff.c                           |   12 +++---
 diff.h                           |    5 +--
 t/t1400-update-ref.sh            |    2 +-
 t/t1501-worktree.sh              |    7 +--
 t/t2011-checkout-invalid-head.sh |    2 +-
 t/t2201-add-update-typechange.sh |    2 -
 t/t3200-branch.sh                |    4 +-
 t/t3600-rm.sh                    |    3 +-
 t/t4002-diff-basic.sh            |    5 +--
 t/t4020-diff-external.sh         |    2 -
 t/t4027-diff-submodule.sh        |    1 -
 t/t4046-diff-unmerged.sh         |   87 ++++++++++++++++++++++++++++++++++++++
 t/t7011-skip-worktree-reading.sh |    4 +-
 t/t7012-skip-worktree-writing.sh |    2 +-
 t/test-lib.sh                    |    3 +
 16 files changed, 120 insertions(+), 36 deletions(-)
 create mode 100755 t/t4046-diff-unmerged.sh