From: Junio C Hamano <gitster@pobox.com>
To: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>
Subject: Re: [PATCH v2 3/3] fetch: reduce duplicate in ref update status lines
Date: Fri, 03 Jun 2016 10:00:24 -0700 [thread overview]
Message-ID: <xmqqlh2mp5qv.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20160603110843.15434-4-pclouds@gmail.com> ("Nguyễn Thái Ngọc Duy"'s message of "Fri, 3 Jun 2016 18:08:43 +0700")
Nguyễn Thái Ngọc Duy <pclouds@gmail.com> writes:
> +static int common_suffix_length(const char *a, const char *b)
> +{
> + const char *pa = a + strlen(a);
> + const char *pb = b + strlen(b);
> + int count = 0;
> +
> + while (pa > a && pb > b && pa[-1] == pb[-1]) {
> + pa--;
> + pb--;
> + count++;
> + }
> +
> + /* stick to '/' boundary, do not break in the middle of a word */
> + while (count) {
> + if (*pa == '/' ||
> + (pa == a && pb > b && pb[-1] == '/') ||
> + (pb == b && pa > a && pa[-1] == '/'))
> + break;
> + pa++;
> + pb++;
> + count--;
> + }
> +
> + return count;
> +}
> +
Why do you need two loops, one going backward from the tail and then
going forward toward '/'? Wouldn't it be sufficient to keep track
of the last slash you saw in a while scanning backwards? I.e
something along the lines of:
tail_a = a + strlen(a);
for (pa = tail_a, pb = b + strlen(b), slash_in_a = NULL;
a < pa && b < pb && pa[-1] == pb[-1];
pa--, pb--) {
if (*pa == '/')
slash_in_a = pa;
}
count = a + strlen(a) - slash_in_a;
perhaps?
> diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh
> index 454d896..9a7649c 100755
> --- a/t/t5510-fetch.sh
> +++ b/t/t5510-fetch.sh
> @@ -222,11 +222,11 @@ test_expect_success 'fetch uses remote ref names to describe new refs' '
> (
> cd descriptive &&
> git fetch o 2>actual &&
> - grep " -> refs/crazyheads/descriptive-branch$" actual |
> + grep " -> refs/crazyheads/.descriptive-branch$" actual |
> test_i18ngrep "new branch" &&
> grep " -> descriptive-tag$" actual |
> test_i18ngrep "new tag" &&
> - grep " -> crazy$" actual |
> + grep " -> .crazy$" actual |
> test_i18ngrep "new ref"
> ) &&
These are somewhat cryptic ;-)
Other than that, the patch looks OK.
Thanks.
next prev parent reply other threads:[~2016-06-03 17:00 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-22 11:20 [PATCH 0/2] Better ref summary alignment in "git fetch" Nguyễn Thái Ngọc Duy
2016-05-22 11:20 ` [PATCH 1/2] fetch: better alignment in ref summary Nguyễn Thái Ngọc Duy
2016-05-23 0:58 ` Junio C Hamano
2016-05-23 1:59 ` Duy Nguyen
2016-05-26 14:22 ` Marc Branchaud
2016-05-26 16:29 ` Jeff King
2016-05-26 17:42 ` Junio C Hamano
2016-05-26 18:13 ` Marc Branchaud
2016-05-26 19:31 ` Junio C Hamano
2016-05-26 22:13 ` Marc Branchaud
2016-05-26 5:18 ` Jeff King
2016-06-02 13:58 ` Duy Nguyen
2016-06-02 16:16 ` Junio C Hamano
2016-05-22 11:20 ` [PATCH 2/2] fetch: reduce ref column size when there are enough short ref names Nguyễn Thái Ngọc Duy
2016-06-03 11:08 ` [PATCH v2 0/3] Better ref summary alignment in "git fetch" Nguyễn Thái Ngọc Duy
2016-06-03 11:08 ` [PATCH v2 1/3] git-fetch.txt: document fetch output Nguyễn Thái Ngọc Duy
2016-06-03 14:33 ` Marc Branchaud
2016-06-03 16:55 ` Jeff King
2016-06-03 11:08 ` [PATCH v2 2/3] fetch: refactor ref update status formatting code Nguyễn Thái Ngọc Duy
2016-06-03 16:48 ` Junio C Hamano
2016-06-03 11:08 ` [PATCH v2 3/3] fetch: reduce duplicate in ref update status lines Nguyễn Thái Ngọc Duy
2016-06-03 14:53 ` Marc Branchaud
2016-06-03 17:04 ` Junio C Hamano
2016-06-03 20:00 ` Marc Branchaud
2016-06-03 20:53 ` Junio C Hamano
2016-06-04 3:11 ` Duy Nguyen
2016-06-04 0:31 ` Duy Nguyen
2016-06-04 16:30 ` Junio C Hamano
2016-06-05 3:15 ` Duy Nguyen
2016-06-03 17:00 ` Junio C Hamano [this message]
2016-06-03 23:49 ` Duy Nguyen
2016-06-03 17:06 ` Jeff King
2016-06-03 23:52 ` Duy Nguyen
2016-06-04 4:53 ` Junio C Hamano
2016-06-03 17:00 ` [PATCH v2 0/3] Better ref summary alignment in "git fetch" Jeff King
2016-06-03 17:37 ` Junio C Hamano
2016-06-05 3:11 ` [PATCH v3 0/6] " Nguyễn Thái Ngọc Duy
2016-06-05 3:11 ` [PATCH v3 1/6] git-fetch.txt: document fetch output Nguyễn Thái Ngọc Duy
2016-06-06 14:24 ` Marc Branchaud
2016-06-05 3:11 ` [PATCH v3 2/6] fetch: refactor ref update status formatting code Nguyễn Thái Ngọc Duy
2016-06-05 3:11 ` [PATCH v3 3/6] fetch: change flag code for displaying tag update and deleted ref Nguyễn Thái Ngọc Duy
2016-06-05 3:11 ` [PATCH v3 4/6] fetch: align all "remote -> local" output Nguyễn Thái Ngọc Duy
2016-06-05 3:11 ` [PATCH v3 5/6] fetch: reduce duplicate in ref update status lines with { -> } Nguyễn Thái Ngọc Duy
2016-06-05 3:11 ` [PATCH v3 6/6] fetch: reduce duplicate in ref update status lines with placeholder Nguyễn Thái Ngọc Duy
2016-06-26 5:58 ` [PATCH v4 0/5] Better ref summary alignment in "git fetch" Nguyễn Thái Ngọc Duy
2016-06-26 5:58 ` [PATCH v4 1/5] git-fetch.txt: document fetch output Nguyễn Thái Ngọc Duy
2016-07-04 14:07 ` Jakub Narębski
2016-07-04 15:17 ` Duy Nguyen
2016-07-04 15:25 ` Jakub Narębski
2016-07-04 15:52 ` Duy Nguyen
2016-06-26 5:58 ` [PATCH v4 2/5] fetch: refactor ref update status formatting code Nguyễn Thái Ngọc Duy
2016-06-26 5:58 ` [PATCH v4 3/5] fetch: change flag code for displaying tag update and deleted ref Nguyễn Thái Ngọc Duy
2016-06-26 5:58 ` [PATCH v4 4/5] fetch: align all "remote -> local" output Nguyễn Thái Ngọc Duy
2016-06-26 5:58 ` [PATCH v4 5/5] fetch: reduce duplicate in ref update status lines with placeholder Nguyễn Thái Ngọc Duy
2016-06-27 4:33 ` Eric Sunshine
2016-06-27 5:42 ` Duy Nguyen
2016-06-27 15:31 ` Junio C Hamano
2016-06-27 18:43 ` [PATCH v4 0/5] Better ref summary alignment in "git fetch" Jeff King
2016-06-27 19:27 ` Duy Nguyen
2016-06-30 16:16 ` Duy Nguyen
2016-07-01 6:09 ` Jeff King
2016-07-01 16:03 ` [PATCH v5 " Nguyễn Thái Ngọc Duy
2016-07-01 16:03 ` [PATCH v5 1/5] git-fetch.txt: document fetch output Nguyễn Thái Ngọc Duy
2016-07-01 16:03 ` [PATCH v5 2/5] fetch: refactor ref update status formatting code Nguyễn Thái Ngọc Duy
2016-07-01 16:03 ` [PATCH v5 3/5] fetch: change flag code for displaying tag update and deleted ref Nguyễn Thái Ngọc Duy
2016-07-01 16:03 ` [PATCH v5 4/5] fetch: align all "remote -> local" output Nguyễn Thái Ngọc Duy
2016-07-01 16:03 ` [PATCH v5 5/5] fetch: reduce duplicate in ref update status lines with placeholder Nguyễn Thái Ngọc Duy
2016-07-01 23:21 ` [PATCH v5 0/5] Better ref summary alignment in "git fetch" Junio C Hamano
2016-07-02 4:39 ` Duy Nguyen
2016-07-04 13:17 ` Marc Branchaud
2016-07-04 15:08 ` Duy Nguyen
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