Re: [PATCH 0/4] handling empty inputs in the revision machinery

Jeff King [off-list ref] writes:

I noticed that:

  git log --tags=does-not-exist

will show all of HEAD, which is rather confusing. This fixes it, and
also hits several other cases that were marked as expect_failure for
rev-list. There is one case it doesn't handle: --stdin. It's not clear
to me what the right behavior is there. I'll follow up with more
discussion.

Naïvely, I would expect that an empty input from --stdin should
still prevent us from defaulting to "HEAD", just like --glob=* and
friends should do.  Perhaps there are conter-example scenarios I
haven't thought of..

Thanks.

  [1/4]: t6018: flesh out empty input/output rev-list tests
  [2/4]: revision: add rev_input_given flag
  [3/4]: rev-list: don't show usage when we see empty ref patterns
  [4/4]: revision: do not fallback to default when rev_input_given is set

 builtin/rev-list.c       |  3 ++-
 revision.c               |  3 ++-
 revision.h               |  7 +++++++
 t/t4202-log.sh           |  6 ++++++
 t/t6018-rev-list-glob.sh | 20 +++++++++-----------
 5 files changed, 26 insertions(+), 13 deletions(-)

-Peff