Question about "git log --cherry"

Hello,

I'm trying to use "git log --cherry ..." in order to display new, kept and removed commits between two branches A and B.

So commits which are only in B are considered new and should be marked with '+'. Commits which are in both branches are marked with '=' but only commit in branch B are shown. Eventually commits which are in A but not in B anymore should be marked with '-'.

So far I found this solution:

  $ git log --cherry-mark --right-only A...B
  $ git log --cherry-pick  --left-only   A...B

but I have to call twice git-log. This can be annoying since depending on A and B, calling git-log can take time.

Is there another option that I'm missing which would do the job but with only one call to git-log ?

Thanks