mirror of
https://github.com/git/git.git
synced 2024-12-14 12:23:35 +08:00
a3800f66a6
Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
149 lines
4.6 KiB
Plaintext
149 lines
4.6 KiB
Plaintext
git-describe(1)
|
|
===============
|
|
|
|
NAME
|
|
----
|
|
git-describe - Show the most recent tag that is reachable from a commit
|
|
|
|
|
|
SYNOPSIS
|
|
--------
|
|
'git-describe' [--all] [--tags] [--contains] [--abbrev=<n>] <committish>...
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
The command finds the most recent tag that is reachable from a
|
|
commit. If the tag points to the commit, then only the tag is
|
|
shown. Otherwise, it suffixes the tag name with the number of
|
|
additional commits on top of the tagged object and the
|
|
abbreviated object name of the most recent commit.
|
|
|
|
|
|
OPTIONS
|
|
-------
|
|
<committish>::
|
|
The object name of the committish.
|
|
|
|
--all::
|
|
Instead of using only the annotated tags, use any ref
|
|
found in `.git/refs/`.
|
|
|
|
--tags::
|
|
Instead of using only the annotated tags, use any tag
|
|
found in `.git/refs/tags`.
|
|
|
|
--contains::
|
|
Instead of finding the tag that predates the commit, find
|
|
the tag that comes after the commit, and thus contains it.
|
|
Automatically implies --tags.
|
|
|
|
--abbrev=<n>::
|
|
Instead of using the default 8 hexadecimal digits as the
|
|
abbreviated object name, use <n> digits.
|
|
|
|
--candidates=<n>::
|
|
Instead of considering only the 10 most recent tags as
|
|
candidates to describe the input committish consider
|
|
up to <n> candidates. Increasing <n> above 10 will take
|
|
slightly longer but may produce a more accurate result.
|
|
An <n> of 0 will cause only exact matches to be output.
|
|
|
|
--exact-match::
|
|
Only output exact matches (a tag directly references the
|
|
supplied commit). This is a synonym for --candidates=0.
|
|
|
|
--debug::
|
|
Verbosely display information about the searching strategy
|
|
being employed to standard error. The tag name will still
|
|
be printed to standard out.
|
|
|
|
--long::
|
|
Always output the long format (the tag, the number of commits
|
|
and the abbreviated commit name) even when it matches a tag.
|
|
This is useful when you want to see parts of the commit object name
|
|
in "describe" output, even when the commit in question happens to be
|
|
a tagged version. Instead of just emitting the tag name, it will
|
|
describe such a commit as v1.2-0-deadbeef (0th commit since tag v1.2
|
|
that points at object deadbeef....).
|
|
|
|
--match <pattern>::
|
|
Only consider tags matching the given pattern (can be used to avoid
|
|
leaking private tags made from the repository).
|
|
|
|
--always::
|
|
Show uniquely abbreviated commit object as fallback.
|
|
|
|
EXAMPLES
|
|
--------
|
|
|
|
With something like git.git current tree, I get:
|
|
|
|
[torvalds@g5 git]$ git-describe parent
|
|
v1.0.4-14-g2414721
|
|
|
|
i.e. the current head of my "parent" branch is based on v1.0.4,
|
|
but since it has a handful commits on top of that,
|
|
describe has added the number of additional commits ("14") and
|
|
an abbreviated object name for the commit itself ("2414721")
|
|
at the end.
|
|
|
|
The number of additional commits is the number
|
|
of commits which would be displayed by "git log v1.0.4..parent".
|
|
The hash suffix is "-g" + 7-char abbreviation for the tip commit
|
|
of parent (which was `2414721b194453f058079d897d13c4e377f92dc6`).
|
|
|
|
Doing a "git-describe" on a tag-name will just show the tag name:
|
|
|
|
[torvalds@g5 git]$ git-describe v1.0.4
|
|
v1.0.4
|
|
|
|
With --all, the command can use branch heads as references, so
|
|
the output shows the reference path as well:
|
|
|
|
[torvalds@g5 git]$ git describe --all --abbrev=4 v1.0.5^2
|
|
tags/v1.0.0-21-g975b
|
|
|
|
[torvalds@g5 git]$ git describe --all HEAD^
|
|
heads/lt/describe-7-g975b
|
|
|
|
With --abbrev set to 0, the command can be used to find the
|
|
closest tagname without any suffix:
|
|
|
|
[torvalds@g5 git]$ git describe --abbrev=0 v1.0.5^2
|
|
tags/v1.0.0
|
|
|
|
SEARCH STRATEGY
|
|
---------------
|
|
|
|
For each committish supplied "git describe" will first look for
|
|
a tag which tags exactly that commit. Annotated tags will always
|
|
be preferred over lightweight tags, and tags with newer dates will
|
|
always be preferred over tags with older dates. If an exact match
|
|
is found, its name will be output and searching will stop.
|
|
|
|
If an exact match was not found "git describe" will walk back
|
|
through the commit history to locate an ancestor commit which
|
|
has been tagged. The ancestor's tag will be output along with an
|
|
abbreviation of the input committish's SHA1.
|
|
|
|
If multiple tags were found during the walk then the tag which
|
|
has the fewest commits different from the input committish will be
|
|
selected and output. Here fewest commits different is defined as
|
|
the number of commits which would be shown by "git log tag..input"
|
|
will be the smallest number of commits possible.
|
|
|
|
|
|
Author
|
|
------
|
|
Written by Linus Torvalds <torvalds@osdl.org>, but somewhat
|
|
butchered by Junio C Hamano <junkio@cox.net>. Later significantly
|
|
updated by Shawn Pearce <spearce@spearce.org>.
|
|
|
|
Documentation
|
|
--------------
|
|
Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
|
|
|
|
GIT
|
|
---
|
|
Part of the linkgit:git[1] suite
|