From: Dirk Gouders <dirk@gouders.net>
To: Brian Lyles <brianmlyles@gmail.com>
Cc: git@vger.kernel.org, newren@gmail.com, me@ttaylorr.com,
phillip.wood123@gmail.com, gitster@pobox.com,
Phillip Wood <phillip.wood@dunelm.org.uk>
Subject: Re: [PATCH v4 4/7] sequencer: handle unborn branch with `--allow-empty`
Date: Thu, 21 Mar 2024 10:52:21 +0100 [thread overview]
Message-ID: <ghttkzykru.fsf@gouders.net> (raw)
In-Reply-To: <20240320233724.214369-5-brianmlyles@gmail.com> (Brian Lyles's message of "Wed, 20 Mar 2024 18:36:59 -0500")
Brian Lyles <brianmlyles@gmail.com> writes:
> + if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL)) {
> + /*
> + * Check to see if this is an unborn branch
> + */
> + head_name = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE, &head_oid, NULL);
> + if (!head_name || !starts_with(head_name, "refs/heads/") || !is_null_oid(&head_oid))
> + return error(_("could not resolve HEAD commit"));
> + head_tree_oid = the_hash_algo->empty_tree;
> + } else {
> + head_commit = lookup_commit(r, &head_oid);
>
> - head_commit = lookup_commit(r, &head_oid);
> + /*
> + * If head_commit is NULL, check_commit, called from
> + * lookup_commit, would have indicated that head_commit is not
> + * a commit object already. repo_parse_commit() will return failure
> + * without further complaints in such a case. Otherwise, if
> + * the commit is invalid, repo_parse_commit() will complain. So
> + * there is nothing for us to say here. Just return failure.
> + */
> + if (repo_parse_commit(r, head_commit))
> + return -1;
Not that I am qualified to do a review of your changes but I am in a
situation where I am trying to understand Git code in general and
(perhaps normal for this situation) wondering about varying styles of
commenting code -- could be that I am just too new to the code base and
do not yet understand the obvious things that don't need comments.
In the above example, there is a short but outstanding comment that
announces a check (and if I understood correctly by [1] it is a kind of
trick that could deserve some more information) and it does _not_
comment on the result. Of course, I have an idea where the correct
place for a comment /* This is an unborn branch -- handle it as if... */
could be, but I'm not sure.
So, my intention is by no means to trigger another spin of this series
-- it is just a view from someone trying to understand not just this
code ;-)
Dirk
[1] https://lore.kernel.org/git/xmqqh6hcu2tg.fsf@gitster.g/
next prev parent reply other threads:[~2024-03-21 9:53 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-19 5:59 [PATCH 1/4] sequencer: Do not require `allow_empty` for redundant commit options brianmlyles
2024-01-19 5:59 ` [PATCH 2/4] docs: Clean up `--empty` formatting in `git-rebase` and `git-am` brianmlyles
2024-01-23 14:24 ` Phillip Wood
2024-01-27 21:22 ` Brian Lyles
2024-02-01 14:02 ` Phillip Wood
2024-01-19 5:59 ` [PATCH 3/4] rebase: Update `--empty=ask` to `--empty=drop` brianmlyles
2024-01-23 14:24 ` Phillip Wood
2024-01-27 21:49 ` Brian Lyles
2024-02-01 14:02 ` Phillip Wood
2024-01-19 5:59 ` [PATCH 4/4] cherry-pick: Add `--empty` for more robust redundant commit handling brianmlyles
2024-01-20 20:24 ` Kristoffer Haugsbakk
2024-01-21 18:28 ` Brian Lyles
2024-01-21 22:05 ` Kristoffer Haugsbakk
2024-01-21 22:41 ` Junio C Hamano
2024-01-22 10:40 ` Phillip Wood
2024-01-22 20:55 ` Kristoffer Haugsbakk
2024-01-23 5:23 ` Brian Lyles
2024-01-23 7:11 ` Kristoffer Haugsbakk
2024-01-23 17:32 ` Junio C Hamano
2024-01-23 18:41 ` Subject: [PATCH] CoC: whitespace fix Junio C Hamano
2024-01-24 3:06 ` Elijah Newren
2024-01-23 18:49 ` [PATCH 4/4] cherry-pick: Add `--empty` for more robust redundant commit handling Junio C Hamano
2024-01-23 14:25 ` Phillip Wood
2024-01-23 18:01 ` Junio C Hamano
2024-01-28 0:07 ` Brian Lyles
2024-01-27 23:56 ` Brian Lyles
2024-01-20 21:38 ` [PATCH 1/4] sequencer: Do not require `allow_empty` for redundant commit options Kristoffer Haugsbakk
2024-01-21 18:19 ` Brian Lyles
2024-01-23 14:23 ` Phillip Wood
2024-01-23 18:18 ` Junio C Hamano
2024-01-24 11:01 ` Phillip Wood
2024-01-24 11:01 ` Phillip Wood
2024-01-27 23:30 ` Brian Lyles
2024-01-28 16:36 ` Brian Lyles
2024-01-29 10:55 ` Phillip Wood
2024-02-10 5:50 ` Brian Lyles
2024-02-01 10:57 ` Phillip Wood
2024-02-10 4:34 ` Brian Lyles
2024-02-10 7:43 ` [PATCH v2 0/8] cherry-pick: add `--empty` Brian Lyles
2024-02-22 16:39 ` phillip.wood123
2024-02-10 7:43 ` [PATCH v2 1/8] docs: address inaccurate `--empty` default with `--exec` Brian Lyles
2024-02-10 7:43 ` [PATCH v2 2/8] docs: clean up `--empty` formatting in git-rebase(1) and git-am(1) Brian Lyles
2024-02-10 7:43 ` [PATCH v2 3/8] rebase: update `--empty=ask` to `--empty=drop` Brian Lyles
2024-02-11 4:54 ` Brian Lyles
2024-02-14 11:05 ` Phillip Wood
2024-02-22 16:34 ` phillip.wood123
2024-02-22 18:27 ` Junio C Hamano
2024-02-10 7:43 ` [PATCH v2 4/8] sequencer: treat error reading HEAD as unborn branch Brian Lyles
2024-02-22 16:34 ` phillip.wood123
2024-02-23 5:28 ` Brian Lyles
2024-02-25 16:57 ` phillip.wood123
2024-02-10 7:43 ` [PATCH v2 5/8] sequencer: do not require `allow_empty` for redundant commit options Brian Lyles
2024-02-22 16:35 ` phillip.wood123
2024-02-10 7:43 ` [PATCH v2 6/8] cherry-pick: decouple `--allow-empty` and `--keep-redundant-commits` Brian Lyles
2024-02-22 16:35 ` Phillip Wood
2024-02-22 18:41 ` Junio C Hamano
2024-02-10 7:43 ` [PATCH v2 7/8] cherry-pick: enforce `--keep-redundant-commits` incompatibility Brian Lyles
2024-02-22 16:35 ` Phillip Wood
2024-02-23 6:23 ` Brian Lyles
2024-02-23 17:41 ` Junio C Hamano
2024-02-25 16:58 ` phillip.wood123
2024-02-26 3:04 ` Brian Lyles
2024-02-10 7:43 ` [PATCH v2 8/8] cherry-pick: add `--empty` for more robust redundant commit handling Brian Lyles
2024-02-11 20:50 ` Jean-Noël AVILA
2024-02-12 1:35 ` Brian Lyles
2024-02-22 16:36 ` phillip.wood123
2024-02-23 6:58 ` Brian Lyles
2024-02-25 16:57 ` phillip.wood123
2024-02-26 2:21 ` Brian Lyles
2024-02-26 3:32 ` Brian Lyles
2024-02-27 10:39 ` phillip.wood123
2024-02-27 17:33 ` Junio C Hamano
2024-03-10 18:41 ` [PATCH v3 0/7] " Brian Lyles
2024-03-13 16:12 ` phillip.wood123
2024-03-10 18:42 ` [PATCH v3 1/7] docs: address inaccurate `--empty` default with `--exec` Brian Lyles
2024-03-10 18:42 ` [PATCH v3 2/7] docs: clean up `--empty` formatting in git-rebase(1) and git-am(1) Brian Lyles
2024-03-10 18:42 ` [PATCH v3 3/7] rebase: update `--empty=ask` to `--empty=stop` Brian Lyles
2024-03-10 18:42 ` [PATCH v3 4/7] sequencer: treat error reading HEAD as unborn branch Brian Lyles
2024-03-11 0:07 ` Junio C Hamano
2024-03-11 16:54 ` Junio C Hamano
2024-03-12 2:04 ` Brian Lyles
2024-03-12 22:25 ` Junio C Hamano
2024-03-16 3:05 ` Brian Lyles
2024-03-13 15:10 ` phillip.wood123
2024-03-16 3:07 ` Brian Lyles
2024-03-10 18:42 ` [PATCH v3 5/7] sequencer: do not require `allow_empty` for redundant commit options Brian Lyles
2024-03-10 18:42 ` [PATCH v3 6/7] cherry-pick: enforce `--keep-redundant-commits` incompatibility Brian Lyles
2024-03-10 18:42 ` [PATCH v3 7/7] cherry-pick: add `--empty` for more robust redundant commit handling Brian Lyles
2024-03-13 16:10 ` phillip.wood123
2024-03-13 17:17 ` Junio C Hamano
2024-03-16 5:20 ` Brian Lyles
2024-03-20 19:35 ` phillip.wood123
2024-03-20 23:36 ` [PATCH v4 0/7] " Brian Lyles
2024-03-25 14:38 ` phillip.wood123
2024-03-25 16:12 ` Brian Lyles
2024-03-25 19:36 ` phillip.wood123
2024-03-25 20:57 ` Junio C Hamano
2024-03-20 23:36 ` [PATCH v4 1/7] docs: address inaccurate `--empty` default with `--exec` Brian Lyles
2024-03-20 23:36 ` [PATCH v4 2/7] docs: clean up `--empty` formatting in git-rebase(1) and git-am(1) Brian Lyles
2024-03-20 23:36 ` [PATCH v4 3/7] rebase: update `--empty=ask` to `--empty=stop` Brian Lyles
2024-03-20 23:36 ` [PATCH v4 4/7] sequencer: handle unborn branch with `--allow-empty` Brian Lyles
2024-03-21 9:52 ` Dirk Gouders [this message]
2024-03-21 16:22 ` Junio C Hamano
2024-03-21 19:45 ` Dirk Gouders
2024-03-20 23:37 ` [PATCH v4 5/7] sequencer: do not require `allow_empty` for redundant commit options Brian Lyles
2024-03-20 23:37 ` [PATCH v4 6/7] cherry-pick: enforce `--keep-redundant-commits` incompatibility Brian Lyles
2024-03-20 23:37 ` [PATCH v4 7/7] cherry-pick: add `--empty` for more robust redundant commit handling Brian Lyles
2024-03-25 23:16 ` [PATCH v5 0/7] " Brian Lyles
2024-03-26 14:45 ` phillip.wood123
2024-03-26 18:28 ` Junio C Hamano
2024-03-27 16:37 ` phillip.wood123
2024-03-25 23:16 ` [PATCH v5 1/7] docs: address inaccurate `--empty` default with `--exec` Brian Lyles
2024-03-25 23:16 ` [PATCH v5 2/7] docs: clean up `--empty` formatting in git-rebase(1) and git-am(1) Brian Lyles
2024-03-25 23:16 ` [PATCH v5 3/7] rebase: update `--empty=ask` to `--empty=stop` Brian Lyles
2024-03-25 23:16 ` [PATCH v5 4/7] sequencer: handle unborn branch with `--allow-empty` Brian Lyles
2024-03-25 23:16 ` [PATCH v5 5/7] sequencer: do not require `allow_empty` for redundant commit options Brian Lyles
2024-03-25 23:16 ` [PATCH v5 6/7] cherry-pick: enforce `--keep-redundant-commits` incompatibility Brian Lyles
2024-03-25 23:16 ` [PATCH v5 7/7] cherry-pick: add `--empty` for more robust redundant commit handling Brian Lyles
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
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ghttkzykru.fsf@gouders.net \
--to=dirk@gouders.net \
--cc=brianmlyles@gmail.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=me@ttaylorr.com \
--cc=newren@gmail.com \
--cc=phillip.wood123@gmail.com \
--cc=phillip.wood@dunelm.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).