public inbox for git@vger.kernel.org 
 help / color / mirror / Atom feed
From: Junio C Hamano <gitster@pobox•com>
To: Jeff King <peff@peff•net>
Cc: git@vger•kernel.org
Subject: Re: [PATCH 04/16] refactor skip_prefix to return a boolean
Date: Mon, 23 Jun 2014 11:50:06 -0700	[thread overview]
Message-ID: <xmqq1tufcvfl.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <20140618194417.GD22622@sigill.intra.peff.net> (Jeff King's message of "Wed, 18 Jun 2014 15:44:19 -0400")

Jeff King <peff@peff•net> writes:

> diff --git a/builtin/clone.c b/builtin/clone.c
> index b12989d..a5b2d9d 100644
> --- a/builtin/clone.c
> +++ b/builtin/clone.c
> @@ -703,9 +703,12 @@ static void write_refspec_config(const char* src_ref_prefix,
>  					strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
>  						branch_top->buf, option_branch);
>  			} else if (remote_head_points_at) {
> +				const char *head = remote_head_points_at->name;
> +				if (!skip_prefix(head, "refs/heads/", &head))
> +					die("BUG: remote HEAD points at non-head?");
> +
>  				strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
> -						branch_top->buf,
> -						skip_prefix(remote_head_points_at->name, "refs/heads/"));
> +						branch_top->buf, head);
>  			}
>  			/*
>  			 * otherwise, the next "git fetch" will

I was re-reading this and noticed another possible bug.

 builtin/clone.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/builtin/clone.c b/builtin/clone.c
index b12989d..df659dd 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -696,7 +696,7 @@ static void write_refspec_config(const char* src_ref_prefix,
 	if (option_mirror || !option_bare) {
 		if (option_single_branch && !option_mirror) {
 			if (option_branch) {
-				if (strstr(our_head_points_at->name, "refs/tags/"))
+				if (starts_with(our_head_points_at->name, "refs/tags/"))
 					strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
 						our_head_points_at->name);
 				else

Because the pattern is not anchored to the left with a slash, it is
clear that the original cannot even claim that it was trying to
munge "foo/refs/tags/" as well.

Which means this is trivially correct, but at the same time I wonder
what it means for our-head to point at a ref in refs/tags/ hierarchy.

  parent reply	other threads:[~2014-06-23 18:50 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-18 19:41 [PATCH 0/16] skip_prefix refactoring and cleanups Jeff King
2014-06-18 19:41 ` [PATCH 01/16] parse_diff_color_slot: drop ofs parameter Jeff King
2014-06-18 19:41 ` [PATCH 02/16] daemon: mark some strings as const Jeff King
2014-06-18 19:42 ` [PATCH 03/16] avoid using skip_prefix as a boolean Jeff King
2014-06-18 19:44 ` [PATCH 04/16] refactor skip_prefix to return " Jeff King
2014-06-20  1:59   ` Eric Sunshine
2014-06-20  2:08     ` Jeff King
2014-06-20  2:30       ` Eric Sunshine
2014-06-20  2:38         ` Jeff King
2014-06-23 18:50   ` Junio C Hamano [this message]
2014-06-23 21:07     ` Jeff King
2014-06-23 21:32       ` [PATCH] builtin/clone.c: detect a clone starting at a tag correctly Junio C Hamano
2014-06-18 19:45 ` [PATCH 05/16] apply: use skip_prefix instead of raw addition Jeff King
2014-06-18 19:46 ` [PATCH 06/16] fast-import: fix read of uninitialized argv memory Jeff King
2014-06-18 19:47 ` [PATCH 07/16] transport-helper: avoid reading past end-of-string Jeff King
2014-06-18 19:47 ` [PATCH 08/16] use skip_prefix to avoid magic numbers Jeff King
2014-06-23 21:44   ` Junio C Hamano
2014-07-01 17:35     ` Jeff King
2014-06-18 19:48 ` [PATCH 09/16] use skip_prefix to avoid repeating strings Jeff King
2014-06-18 19:49 ` [PATCH 10/16] fast-import: use skip_prefix for parsing input Jeff King
2014-06-20  3:19   ` Eric Sunshine
2014-06-20  5:45     ` Jeff King
2014-06-20  8:59       ` Eric Sunshine
2014-06-18 19:49 ` [PATCH 11/16] daemon: use skip_prefix to avoid magic numbers Jeff King
2014-06-18 19:51 ` [PATCH 12/16] stat_opt: check extra strlen call Jeff King
2014-06-18 19:51 ` [PATCH 13/16] fast-import: refactor parsing of spaces Jeff King
2014-06-18 19:56 ` [PATCH 14/16] fetch-pack: refactor parsing in get_ack Jeff King
2014-06-20  5:15   ` Eric Sunshine
2014-06-18 19:56 ` [PATCH 15/16] git: avoid magic number with skip_prefix Jeff King
2014-06-18 19:57 ` [PATCH 16/16] use skip_prefix to avoid repeated calculations Jeff King
2014-06-19  5:22 ` [PATCH 0/16] skip_prefix refactoring and cleanups Tanay Abhra
2014-06-19 21:58 ` [PATCH 17/16] http-push: refactor parsing of remote object names Jeff King
2014-06-19 22:08   ` Jeff King

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=xmqq1tufcvfl.fsf@gitster.dls.corp.google.com \
    --to=gitster@pobox$(echo .)com \
    --cc=git@vger$(echo .)kernel.org \
    --cc=peff@peff$(echo .)net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox