Re: [PATCH v2 08/16] line-range: teach -L/RE/ to search relative to anchor point

> Range specification -L/RE/ for blame/log unconditionally begins
> searching at line one. Mailing list discussion [1] suggests that, in the
> presence of multiple -L options, -L/RE/ should search relative to the
> endpoint of the previous -L range, if any.
>
> Teach the parsing machinery underlying blame's and log's -L options to
> accept a start point for -L/RE/ searches. Follow-up patches will upgrade
> blame and log to take advantage of this ability.
>
> [1]: http://thread.gmane.org/gmane.comp.version-control.git/229755/focus=229966
>
> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
> ---
>  builtin/blame.c |  2 +-
>  line-log.c      |  2 +-
>  line-range.c    | 30 ++++++++++++++++++++++++++----
>  line-range.h    |  5 ++++-
>  4 files changed, 32 insertions(+), 7 deletions(-)
>
> diff --git a/builtin/blame.c b/builtin/blame.c
> index 2f4d9e2..7b084d8 100644
> --- a/builtin/blame.c
> +++ b/builtin/blame.c
> @@ -2479,7 +2479,7 @@ parse_done:
>  	for (range_i = 0; range_i < range_list.nr; ++range_i) {
>  		long bottom, top;
>  		if (parse_range_arg(range_list.items[range_i].string,
> -				    nth_line_cb, &sb, lno,
> +				    nth_line_cb, &sb, lno, 1,
>  				    &bottom, &top, sb.path))
>  			usage(blame_usage);
>  		if (lno < top || ((lno || bottom) && lno < bottom))
> diff --git a/line-log.c b/line-log.c
> index bdadf35..38f827b 100644
> --- a/line-log.c
> +++ b/line-log.c
> @@ -591,7 +591,7 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
>  		cb_data.line_ends = ends;
>  
>  		if (parse_range_arg(range_part, nth_line, &cb_data,
> -				    lines, &begin, &end,
> +				    lines, 1, &begin, &end,