• Jeff King's avatar
    reflog-walk: apply --since/--until to reflog dates · de239446
    Jeff King authored
    When doing a reflog walk, we use the commit's date to
    do any date limiting. In earlier versions of Git, this could
    lead to nonsense results, since a skipped commit would
    truncate the traversal. So a sequence like:
    
      git commit ...
      git checkout week-old-branch
      git checkout -
      git log -g --since=1.day.ago
    
    would stop at the week-old-branch, even though the "git
    commit" entry further back is still interesting.
    
    As of the prior commit, which uses a parent-less traversal
    of the reflog, you get the whole reflog minus any commits
    whose dates do not match the specified options. This is
    arguably useful, as you could scan the reflogs for commits
    that originated in a certain range.
    
    But more likely a user doing a reflog walk wants to limit
    based on the reflog entries themselves. You can simulate
    --until with:
    
      git log -g @{1.day.ago}
    
    but there's no way to ask Git to traverse only back to a
    certain date. E.g.:
    
      # show me reflog entries from the past day
      git log -g --since=1.day.ago
    
    This patch teaches the revision machinery to prefer the
    reflog entry dates to the commit dates when doing a reflog
    walk. Technically this is a change in behavior that affects
    plumbing, but the previous behavior was so buggy that it's
    unlikely anyone was relying on it.
    Signed-off-by: default avatarJeff King <peff@peff.net>
    Signed-off-by: default avatarJunio C Hamano <gitster@pobox.com>
    de239446
reflog-walk.h 918 Bytes