From: Phillip Wood <phillip.wood123@gmail.com>
To: Jeff King <peff@peff.net>, Doan Tran Cong Danh <congdanhqx@gmail.com>
Cc: git@vger.kernel.org, gitster@pobox.com
Subject: Re: [PATCH v6 9/9] sequencer: fallback to sane label in making rebase todo list
Date: Mon, 11 Nov 2019 16:22:52 +0000 [thread overview]
Message-ID: <6e38ad3e-8732-899a-293c-cddd5312fa88@gmail.com> (raw)
In-Reply-To: <20191111083940.GC17984@sigill.intra.peff.net>
Hi Doan & Peff
On 11/11/2019 08:39, Jeff King wrote:
> On Mon, Nov 11, 2019 at 01:03:42PM +0700, Doan Tran Cong Danh wrote:
>
>> In later stage of rebasing, we will make a ref in
>> refs/rewritten/<label>, this label is extracted from the subject of
>> current merge commit.
>>
>> If that subject has forbidden character for refname, git couldn't create
>> the rewritten ref. One such case is the merge commit subject has
>> a multibyte character encoded in ISO-2022-JP.
>>
>> Provide a sane fallback in order to help git-rebase works in such case
>
> Good find. Not having worked much with this part of the sequencer code,
> I don't have a strong opinion on the fallback label. But it seems better
> than the current behavior would be.
There's been some discussion about sanitizing the subject recently
[1,2]. It would be good to co-ordinate this effort with that one
Best Wishes
Phillip
[1]
https://public-inbox.org/git/4a02c38442dd8a4c0381adc8db0dce81c253da09.1567432900.git.gitgitgadget@gmail.com
[2]
https://public-inbox.org/git/nycvar.QRO.7.76.6.1910251508100.46@tvgsbejvaqbjf.bet
> I suspect there may be other subtle problems, too, for filesystems that
> can't represent some part of the subject (e.g., I wonder if some of your
> ISO-2022-JP tests might already have trouble on HFS+, which excepts all
> paths to be UTF-8).
>
>> @@ -4607,9 +4608,15 @@ static int make_script_with_merges(struct pretty_print_context *pp,
>> if (isspace(*p1))
>> *(char *)p1 = '-';
>>
>> + hex_oid = oid_to_hex(&commit->object.oid);
>> +
>> + if (check_refname_format(label.buf, REFNAME_ALLOW_ONELEVEL) < 0) {
>> + strbuf_reset(&label);
>> + strbuf_addf(&label, "label-%s", hex_oid);
>> + }
>> +
>> strbuf_reset(&buf);
>> - strbuf_addf(&buf, "%s -C %s",
>> - cmd_merge, oid_to_hex(&commit->object.oid));
>> + strbuf_addf(&buf, "%s -C %s", cmd_merge, hex_oid);
>
> A minor nit, but I think it's better here to just call oid_to_hex()
> twice, rather than assigning to the hex_oid variable. It's returning a
> pointer to a static buffer, so holding onto the pointers for too long is
> dangerous. What you have here is definitely OK, because nothing
> interesting happens in between, but seeing any assignment of the result
> of "oid_to_hex" makes auditing harder.
>
> And it's not like it's that expensive, or that this is
> performance-critical code (and if it were, we'd do better to use
> oid_to_hex_r() directly into the strbuf anyway).
>
> -Peff
>
next prev parent reply other threads:[~2019-11-11 16:22 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-31 9:26 [PATCH 0/3] Linux with musl libc improvement Doan Tran Cong Danh
2019-10-31 9:26 ` [PATCH 1/3] t0028: eliminate non-standard usage of printf Doan Tran Cong Danh
2019-10-31 17:41 ` Jeff King
2019-11-01 1:33 ` Danh Doan
2019-10-31 19:50 ` brian m. carlson
2019-10-31 9:26 ` [PATCH 2/3] configure.ac: define ICONV_OMITS_BOM if necessary Doan Tran Cong Danh
2019-10-31 18:11 ` Jeff King
2019-10-31 20:02 ` brian m. carlson
2019-11-01 1:40 ` Danh Doan
2019-10-31 9:26 ` [PATCH 3/3] sequencer: reencode to utf-8 before arrange rebase's todo list Doan Tran Cong Danh
2019-10-31 10:38 ` Johannes Schindelin
2019-10-31 19:26 ` Jeff King
2019-11-01 4:49 ` Danh Doan
2019-11-01 8:25 ` [PATCH v2 0/3] Linux with musl libc improvement Doan Tran Cong Danh
2019-11-01 8:25 ` [PATCH v2 1/3] t0028: eliminate non-standard usage of printf Doan Tran Cong Danh
2019-11-01 16:54 ` Jeff King
2019-11-01 8:25 ` [PATCH v2 2/3] configure.ac: define ICONV_OMITS_BOM if necessary Doan Tran Cong Danh
2019-11-01 16:56 ` Jeff King
2019-11-02 0:43 ` Danh Doan
2019-11-01 8:25 ` [PATCH v2 3/3] sequencer: reencode to utf-8 before arrange rebase's todo list Doan Tran Cong Danh
2019-11-01 16:59 ` Jeff King
2019-11-02 1:02 ` Danh Doan
2019-11-02 12:20 ` Danh Doan
2019-11-05 8:00 ` Jeff King
2019-11-06 1:30 ` Junio C Hamano
2019-11-06 4:03 ` Jeff King
2019-11-06 10:03 ` Danh Doan
2019-11-07 5:56 ` Jeff King
2019-11-06 9:19 ` [PATCH v3 0/8] Correct internal working and output encoding Doan Tran Cong Danh
2019-11-06 9:19 ` [PATCH v3 1/8] t0028: eliminate non-standard usage of printf Doan Tran Cong Danh
2019-11-06 9:20 ` [PATCH v3 2/8] configure.ac: define ICONV_OMITS_BOM if necessary Doan Tran Cong Danh
2019-11-06 9:20 ` [PATCH v3 3/8] t3900: demonstrate git-rebase problem with multi encoding Doan Tran Cong Danh
2019-11-06 9:20 ` [PATCH v3 4/8] sequencer: reencode to utf-8 before arrange rebase's todo list Doan Tran Cong Danh
2019-11-06 9:20 ` [PATCH v3 5/8] sequencer: reencode revert/cherry-pick's " Doan Tran Cong Danh
2019-11-06 9:20 ` [PATCH v3 6/8] sequencer: reencode squashing commit's message Doan Tran Cong Danh
2019-11-06 9:20 ` [PATCH v3 7/8] sequencer: reencode old merge-commit message Doan Tran Cong Danh
2019-11-06 15:39 ` Eric Sunshine
2019-11-06 9:20 ` [PATCH v3 8/8] sequencer: reencode commit message for am/rebase --show-current-patch Doan Tran Cong Danh
2019-11-07 2:56 ` [PATCH v4 0/8] Correct internal working and output encoding Doan Tran Cong Danh
2019-11-07 2:56 ` [PATCH v4 1/8] t0028: eliminate non-standard usage of printf Doan Tran Cong Danh
2019-11-07 2:56 ` [PATCH v4 2/8] configure.ac: define ICONV_OMITS_BOM if necessary Doan Tran Cong Danh
2019-11-07 6:18 ` Junio C Hamano
2019-11-07 2:56 ` [PATCH v4 3/8] t3900: demonstrate git-rebase problem with multi encoding Doan Tran Cong Danh
2019-11-07 6:02 ` Jeff King
2019-11-07 6:48 ` Danh Doan
2019-11-07 8:02 ` Jeff King
2019-11-07 10:51 ` Danh Doan
2019-11-11 8:22 ` Jeff King
2019-11-07 2:56 ` [PATCH v4 4/8] sequencer: reencode to utf-8 before arrange rebase's todo list Doan Tran Cong Danh
2019-11-07 6:04 ` Jeff King
2019-11-07 2:56 ` [PATCH v4 5/8] sequencer: reencode revert/cherry-pick's " Doan Tran Cong Danh
2019-11-07 6:06 ` Jeff King
2019-11-07 2:56 ` [PATCH v4 6/8] sequencer: reencode squashing commit's message Doan Tran Cong Danh
2019-11-07 6:15 ` Jeff King
2019-11-07 2:56 ` [PATCH v4 7/8] sequencer: reencode old merge-commit message Doan Tran Cong Danh
2019-11-07 2:56 ` [PATCH v4 8/8] sequencer: reencode commit message for am/rebase --show-current-patch Doan Tran Cong Danh
2019-11-07 6:32 ` Jeff King
2019-11-07 7:48 ` Danh Doan
2019-11-07 8:03 ` Jeff King
2019-11-07 16:32 ` Danh Doan
2019-11-08 9:43 ` [PATCH v5 0/9] Improve odd encoding integration Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 1/9] t0028: eliminate non-standard usage of printf Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 2/9] configure.ac: define ICONV_OMITS_BOM if necessary Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 3/9] t3900: demonstrate git-rebase problem with multi encoding Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 4/9] sequencer: reencode to utf-8 before arrange rebase's todo list Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 5/9] sequencer: reencode revert/cherry-pick's " Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 6/9] sequencer: reencode squashing commit's message Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 7/9] sequencer: reencode old merge-commit message Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 8/9] sequencer: reencode commit message for am/rebase --show-current-patch Doan Tran Cong Danh
2019-11-08 9:43 ` [PATCH v5 9/9] sequencer: fallback to sane label in making rebase todo list Doan Tran Cong Danh
2019-11-11 1:22 ` [PATCH v5 0/9] Improve odd encoding integration Junio C Hamano
2019-11-11 4:02 ` Junio C Hamano
2019-11-11 4:43 ` Danh Doan
2019-11-11 6:14 ` Junio C Hamano
2019-11-11 6:03 ` [PATCH v6 0/9] sequencer: handle other encoding better Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 1/9] t0028: eliminate non-standard usage of printf Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 2/9] configure.ac: define ICONV_OMITS_BOM if necessary Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 3/9] t3900: demonstrate git-rebase problem with multi encoding Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 4/9] sequencer: reencode to utf-8 before arrange rebase's todo list Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 5/9] sequencer: reencode revert/cherry-pick's " Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 6/9] sequencer: reencode squashing commit's message Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 7/9] sequencer: reencode old merge-commit message Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 8/9] sequencer: reencode commit message for am/rebase --show-current-patch Doan Tran Cong Danh
2019-11-11 6:03 ` [PATCH v6 9/9] sequencer: fallback to sane label in making rebase todo list Doan Tran Cong Danh
2019-11-11 8:39 ` Jeff King
2019-11-11 16:22 ` Phillip Wood [this message]
2019-11-11 18:26 ` Johannes Schindelin
2019-11-12 4:17 ` Junio C Hamano
2019-11-11 8:40 ` [PATCH v6 0/9] sequencer: handle other encoding better Jeff King
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