Re: suggestions for generating diffs through the revision list

[Junio C Hamano <gitster@pobox.com>]

Don Zickus <dzickus@redhat.com> writes:

> I am try to walk the revision history for a given path and analyze the
> diff (as compared to its parent).  What is the proper way of doing that?
>
> I noticed a bunch of 'library' calls such as
>
> init_revsion(&revs);
> setup_revisions(argc, argv, &revs, "HEAD");
> prepare_revision_walk(&revs, NULL);
> commit = get_revision(&revs);
>
> But what I can't find is the way to generate diffs.  I see lots and lots
> of code to do it, but every builtin seems to do it differently.  Not
> knowing the internals that well, I was hoping for some advice.
>
> I stumbled upon calls like
>
> run_diff_files
> run_diff_index
>
> but I haven't seen how to use them correctly.

Documentation/technical/api-*.txt