Re: [PATCH 2/2] blame: show "previous" information in --porcelain/--incremental format

> When the final blame is laid for a line to a <commit, path> pair, it also
> gives a "previous" information to --porcelain and --incremental output
> format.  It gives the parent commit of the blamed commit, _and_ a path in
> that parent commit that corresponds to the blamed path --- in short, it is
> the origin that would have been blamed (or passed blame through) for the
> line _if_ the blamed commit did not change that line.

> +	if (suspect->previous) {
> +		struct origin *prev = suspect->previous;
> +		printf("previous %s ", sha1_to_hex(prev->commit->object.sha1));
> +		write_name_quoted(prev->path, stdout, '\n');
> +	}