Jeff King <peff@xxxxxxxx> writes:
> On Wed, Jul 01, 2015 at 08:19:40AM -0700, Junio C Hamano wrote:
>
>> Sounds good. While at it, perhaps add a mention (perhaps by
>> creating a BUGS section at the end of the file) that --count
>> with --use-bitmap-index ignores pathspec silently?
>
> I think we can just fix it rather than documenting the problem. :)
;-) Good.
Will queue; thanks.
>
> -- >8 --
> Subject: rev-list: disable --use-bitmap-index when pruning commits
>
> The reachability bitmaps do not have enough information to
> tell us which commits might have changed path "foo", so the
> current code produces wrong answers for:
>
> git rev-list --use-bitmap-index --count HEAD -- foo
>
> (it silently ignores the "foo" limiter). Instead, we should
> fall back to doing a normal traversal (it is OK to fall
> back rather than complain, because --use-bitmap-index is a
> pure optimization, and might not kick in for other reasons,
> such as there being no bitmaps in the repository).
>
> Signed-off-by: Jeff King <peff@xxxxxxxx>
> ---
> builtin/rev-list.c | 2 +-
> t/t5310-pack-bitmaps.sh | 6 ++++++
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/builtin/rev-list.c b/builtin/rev-list.c
> index ff84a82..88eddbd 100644
> --- a/builtin/rev-list.c
> +++ b/builtin/rev-list.c
> @@ -355,7 +355,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
> if (bisect_list)
> revs.limited = 1;
>
> - if (use_bitmap_index) {
> + if (use_bitmap_index && !revs.prune) {
> if (revs.count && !revs.left_right && !revs.cherry_mark) {
> uint32_t commit_count;
> if (!prepare_bitmap_walk(&revs)) {
> diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh
> index 6003490..d446706 100755
> --- a/t/t5310-pack-bitmaps.sh
> +++ b/t/t5310-pack-bitmaps.sh
> @@ -53,6 +53,12 @@ rev_list_tests() {
> test_cmp expect actual
> '
>
> + test_expect_success "counting commits with limiting ($state)" '
> + git rev-list --count HEAD -- 1.t >expect &&
> + git rev-list --use-bitmap-index --count HEAD -- 1.t >actual &&
> + test_cmp expect actual
> + '
> +
> test_expect_success "enumerate --objects ($state)" '
> git rev-list --objects --use-bitmap-index HEAD >tmp &&
> cut -d" " -f1 <tmp >tmp2 &&
--
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