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1st chunk of `Documentation/git-show-ref.adoc`
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git-show-ref(1)
===============

NAME
----
git-show-ref - List references in a local repository

SYNOPSIS
--------
[verse]
'git show-ref' [--head] [-d | --dereference]
	     [-s | --hash[=<n>]] [--abbrev[=<n>]] [--branches] [--tags]
	     [--] [<pattern>...]
'git show-ref' --verify [-q | --quiet] [-d | --dereference]
	     [-s | --hash[=<n>]] [--abbrev[=<n>]]
	     [--] [<ref>...]
'git show-ref' --exclude-existing[=<pattern>]
'git show-ref' --exists <ref>

DESCRIPTION
-----------

Displays references available in a local repository along with the associated
commit IDs. Results can be filtered using a pattern and tags can be
dereferenced into object IDs. Additionally, it can be used to test whether a
particular ref exists.

By default, shows the tags, heads, and remote refs.

The `--exclude-existing` form is a filter that does the inverse. It reads
refs from stdin, one ref per line, and shows those that don't exist in
the local repository.

The `--exists` form can be used to check for the existence of a single
references. This form does not verify whether the reference resolves to an
actual object.

Use of this utility is encouraged in favor of directly accessing files under
the `.git` directory.

OPTIONS
-------

--head::

	Show the HEAD reference, even if it would normally be filtered out.

--branches::
--tags::

	Limit to local branches and local tags, respectively.  These options
	are not mutually exclusive; when given both, references stored in
	"refs/heads" and "refs/tags" are displayed.  Note that `--heads`
	is a deprecated synonym for `--branches` and may be removed
	in the future.

-d::
--dereference::

	Dereference tags into object IDs as well. They will be shown with `^{}`
	appended.

-s::
--hash[=<n>]::

	Only show the OID, not the reference name. When combined with
	`--dereference`, the dereferenced tag will still be shown after the OID.

--verify::

	Enable stricter reference checking by requiring an exact ref path.
	Aside from returning an error code of 1, it will also print an error
	message if `--quiet` was not specified.

--exists::

	Check whether the given reference exists. Returns an exit code of 0 if
	it does, 2 if it is missing, and 1 in case looking up the reference
	failed with an error other than the reference being missing.

--abbrev[=<n>]::

	Abbreviate the object name.  When using `--hash`, you do
	not have to say `--hash --abbrev`; `--hash=n` would do.

-q::
--quiet::

	Do not print any results to stdout. Can be used with `--verify` to
	silently check if a reference exists.

--exclude-existing[=<pattern>]::

	Make `git show-ref` act as a filter that reads refs from stdin of the
	form `^(?:<anything>\s)?<refname>(?:\^{})?$`
	and performs the following actions on each:
	(1) strip `^{}` at the end of line if any;
	(2) ignore if pattern is provided and does not head-match refname;
	(3) warn if refname is not a well-formed refname and skip;
	(4) ignore if refname is a ref that exists in the local repository;
	(5) otherwise output the line.


<pattern>...::

	Show references matching one or more patterns. Patterns are matched from
	the end of the full name, and only complete parts are matched, e.g.
	'master' matches 'refs/heads/master', 'refs/remotes/origin/master',
	'refs/tags/jedi/master' but not 'refs/heads/mymaster' or
	'refs/remotes/master/jedi'.

OUTPUT
------

The output is in the format:

------------

Title: Git Show Ref Command
Summary
The git-show-ref command is used to list references in a local repository, displaying associated commit IDs and allowing for filtering using patterns and dereferencing of tags into object IDs. It provides various options to customize the output, such as limiting to local branches or tags, verifying reference existence, and excluding existing references. The command can also be used to check if a particular reference exists, making it a useful utility for managing and inspecting a Git repository's references.