Re: [RFC] revision limiter in git-rev-list

While I really do not think this belongs to rev-list, I suspect
what you want is a command that takes a set of commits you are
interested in and gives you an abbreviated topology across them.

I was thinking at an extension of git-rev-list because

1) Current git-rev-list options are quite orthogonal with rev limiter.
As example in previous given examples -n and --parents options are
used and I think more could be used with
interesting results.

Current git-rev-list options are a lot and are very powerful, it's a
pity if this new feature do not inherit them.

2) This feature could be seen as a generalization of path limiting.

From today:

  git-rev-list  HEAD -- <path 1>  <path 2>  ...   <path n>

To possible:
git-rev-list  HEAD -- <obj 1>  <obj 2>  ...   <obj n>

Where obj == <path> || obj == <commit sha> ||  obj == <something else
I didn't think of>

Of course we need a (syntactic) way to disambiguate the arguments
after '--' but the results are very powerful and general, as example
we could mix commit objects _and_ paths in git-rev-list command line
(git-rev-list HEAD -- foo.c  tag1) and also be able to use the full
set of git-rev-list options before the '--'


     Marco