From: Junio C Hamano <gitster@pobox.com>
To: Richard Hansen <rhansen@bbn.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 2/4] glossary: define committish (a.k.a. commit-ish)
Date: Wed, 19 Jun 2013 10:14:42 -0700 [thread overview]
Message-ID: <7vhagu10ql.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <1371607780-2966-3-git-send-email-rhansen@bbn.com> (Richard Hansen's message of "Tue, 18 Jun 2013 22:09:38 -0400")
Richard Hansen <rhansen@bbn.com> writes:
> Signed-off-by: Richard Hansen <rhansen@bbn.com>
> ---
> Documentation/glossary-content.txt | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/Documentation/glossary-content.txt b/Documentation/glossary-content.txt
> index 01365d9..a3cc003 100644
> --- a/Documentation/glossary-content.txt
> +++ b/Documentation/glossary-content.txt
> @@ -82,6 +82,17 @@ to point at the new commit.
> to the top <<def_directory,directory>> of the stored
> revision.
>
> +[[def_committish]]committish (also commit-ish)::
> + A <<def_ref,ref>> pointing to an <<def_object,object>> that
> + can be recursively dereferenced to a
> + <<def_commit_object,commit object>>.
> + The following are all committishes:
> + a ref pointing to a commit object,
> + a ref pointing to a <<def_tag_object,tag object>> that points
> + to a commit object,
> + a ref pointing to a tag object that points to a tag object
> + that points to a commit object, etc.
> +
<object-type>-ish does not have anything to do with a ref. Even
when an object is dangling in your object store without being
reachable from any of your refs, it keeps its own "ish"-ness.
"ish"-ness is a property of the object itself.
* A commit object has a single top-level tree, and when a command
wants a tree object, you can often pass it a commit (historically
some commands were more strict and refused to work on a commit
when they wanted a tree). In other words, a commit can be used
in place for a tree. A commit object is a tree-ish.
* A tag object, when it points (recursively) at a commit object,
can often be used in place for a commit object. Such a tag
object is a commit-ish.
* A tag object, when it points (recursively) at a tree object, can
often be used in place for a tree object. Such a tag object is a
tree-ish. Note that such a tag object cannot be a commit-ish.
next prev parent reply other threads:[~2013-06-19 17:15 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 2:09 [PATCH 0/4] documentation cleanups for <rev>^{<type>} Richard Hansen
2013-06-19 2:09 ` [PATCH 1/4] glossary: add 'treeish' as a synonym for 'tree-ish' Richard Hansen
2013-06-19 17:09 ` Junio C Hamano
2013-06-19 19:12 ` Richard Hansen
2013-06-19 21:46 ` Junio C Hamano
2013-06-19 20:35 ` Richard Hansen
2013-06-19 2:09 ` [PATCH 2/4] glossary: define committish (a.k.a. commit-ish) Richard Hansen
2013-06-19 4:19 ` Ramkumar Ramachandra
2013-06-19 4:38 ` Richard Hansen
2013-06-19 5:56 ` Ramkumar Ramachandra
2013-06-19 15:31 ` Richard Hansen
2013-06-19 16:10 ` Richard Hansen
2013-06-19 6:19 ` Jonathan Nieder
2013-06-19 17:14 ` Junio C Hamano [this message]
2013-06-19 19:16 ` Richard Hansen
2013-06-19 21:05 ` Junio C Hamano
2013-06-19 22:23 ` Richard Hansen
2013-06-19 22:36 ` Junio C Hamano
2013-06-19 23:37 ` Richard Hansen
2013-06-20 3:25 ` Junio C Hamano
2013-06-20 10:55 ` Ramkumar Ramachandra
2013-06-20 10:37 ` Ramkumar Ramachandra
2013-06-19 2:09 ` [PATCH 3/4] glossary: more precise definition of tree-ish (a.k.a. treeish) Richard Hansen
2013-06-19 2:09 ` [PATCH 4/4] revisions.txt: fix and clarify <rev>^{<type>} Richard Hansen
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