[PATCH 0/3] Make old sha1 optional with git update-ref -d

This series makes the old ref value optional for update-ref -d (it's already optional for update-ref without -d). But first it adds some test and refactors a bit.

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Karl Hasselström (3):
      Make old sha1 optional with git update-ref -d
      Clean up builtin-update-ref's option parsing
      Add some tests for git update-ref -d

 Documentation/git-update-ref.txt |    2 +-
 builtin-update-ref.c             |   32 ++++++++++++++++++--------------
 t/t1400-update-ref.sh            |   24 ++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 15 deletions(-)