Output default revisions as their hex SHA1 names to be consistent.
Add "--verify" flag that verifies that we output a single ref and not
more (and disables ref arguments).
You can say "HEAD.p" for the "parent of HEAD". It nests, so
HEAD.p2.p
means parent of second parent of HEAD (which obviously depends
on HEAD being a merge).
Sometimes we only want to output revisions, and sometimes we want to
only see the stuff that wasn't revisions. Teach git-rev-parse to
understand the "--revs-only" and "--no-revs" flags.
It's an incredibly cheesy helper that changes human-readable revision
arguments into the git-rev-list argument format.
You can use it to do something like this:
git-rev-list --pretty $(git-rev-parse --default HEAD "$@")
which is what git-log-script will become. Here git-rev-parse will
then allow you to use arguments like "v2.6.12-rc5.." or similar
human-readable ranges.
It's really quite stupid: "a..b" will be converted into "a" and "^b" if
"a" and "b" are valid object pointers. And the "--default" case will be
used if nothing but flags have been seen, so that you can default to a
certain argument if there are no other ranges.
