[PATCH 0/4] make it possible to skip away from broken commits

This patch series adds a "--ratio=x/y" option to "git bisect skip" so that it is possible to skip away from an area were the commits cannot be tested.

Note that in this series "--ratio=4" means the same as "--ratio=1/4". But I am not sure if this shortcut is worth it.

After this series I plan to implement a similar "--skip-ratio" option that can be passed to "git bisect start" and to add some documentation.

  bisect: add parameters to "filter_skipped"
  bisect: use the skip ratio to choose a commit away from a skipped
    commit
  bisect: add "--ratio=<ratio>" option to "git bisect skip"
  t6030: add test case for "git bisect skip --ratio=x/y"

 bisect.c                    |   74 ++++++++++++++++++++++++++++++++++++++++--
 bisect.h                    |    4 ++-
 builtin-rev-list.c          |    4 ++-
 git-bisect.sh               |   37 ++++++++++++++-------
 t/t6030-bisect-porcelain.sh |   12 +++++++
 5 files changed, 112 insertions(+), 19 deletions(-)