Re: [PATCH v2 00/20] object_id part 5

> This is the fifth in a series of series to convert from unsigned char [20] to
> struct object_id.
>
> This series converts many of the files in the builtin directory to use struct
> object_id.  This gets us almost to the point where we can convert get_tree_entry
> to use struct object_id, but not quite.  That function is used indirectly by
> get_sha1, meaning that get_oid would have to completely replace it in order for
> get_tree_entry to be converted.
>
> However, this series tackles one of two major sources of object ID values: the
> command line (the other, of course, being the refs code).  Converting several of
> the builtin commands to use struct object_id as much as possible makes it easier
> to convert other functions down the line.