pickaxe: count regex matches only once
[git/git.git] / Documentation / git-branch.txt
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1git-branch(1)
2=============
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3
4NAME
5----
c3f0baac 6git-branch - List, create, or delete branches
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7
8SYNOPSIS
9--------
dd181119 10[verse]
b773fc34 11'git branch' [--color | --no-color] [-r | -a]
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12 [-v [--abbrev=<length> | --no-abbrev]]
13 [(--merged | --no-merged | --contains) [<commit>]]
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14'git branch' [--track | --no-track] [-l] [-f] <branchname> [<start-point>]
15'git branch' (-m | -M) [<oldbranch>] <newbranch>
16'git branch' (-d | -D) [-r] <branchname>...
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17
18DESCRIPTION
19-----------
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20
21With no arguments, existing branches are listed, the current branch will
22be highlighted with an asterisk. Option `-r` causes the remote-tracking
23branches to be listed, and option `-a` shows both.
24
25With `--contains`, shows only the branches that contains the named commit
26(in other words, the branches whose tip commits are descendant of the
27named commit). With `--merged`, only branches merged into the named
28commit (i.e. the branches whose tip commits are reachable from the named
29commit) will be listed. With `--no-merged` only branches not merged into
30the named commit will be listed. Missing <commit> argument defaults to
31'HEAD' (i.e. the tip of the current branch).
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33In its second form, a new branch named <branchname> will be created.
34It will start out with a head equal to the one given as <start-point>.
35If no <start-point> is given, the branch will be created with a head
36equal to that of the currently checked out branch.
37
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38Note that this will create the new branch, but it will not switch the
39working tree to it; use "git checkout <newbranch>" to switch to the
40new branch.
41
572fc81d 42When a local branch is started off a remote branch, git sets up the
ba020ef5 43branch so that 'git-pull' will appropriately merge from
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44the remote branch. This behavior may be changed via the global
45`branch.autosetupmerge` configuration flag. That setting can be
46overridden by using the `--track` and `--no-track` options.
0746d19a 47
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48With a '-m' or '-M' option, <oldbranch> will be renamed to <newbranch>.
49If <oldbranch> had a corresponding reflog, it is renamed to match
50<newbranch>, and a reflog entry is created to remember the branch
51renaming. If <newbranch> exists, -M must be used to force the rename
52to happen.
53
2eaf273d 54With a `-d` or `-D` option, `<branchname>` will be deleted. You may
3a4b3f26 55specify more than one branch for deletion. If the branch currently
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56has a reflog then the reflog will also be deleted.
57
58Use -r together with -d to delete remote-tracking branches. Note, that it
59only makes sense to delete remote-tracking branches if they no longer exist
ba020ef5 60in remote repository or if 'git-fetch' was configured not to fetch
5162e697 61them again. See also 'prune' subcommand of linkgit:git-remote[1] for way to
1e72a40d 62clean up all obsolete remote-tracking branches.
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63
64
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65OPTIONS
66-------
d4072c97 67-d::
1e72a40d 68 Delete a branch. The branch must be fully merged in HEAD.
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69
70-D::
1e72a40d 71 Delete a branch irrespective of its merged status.
d4072c97 72
3a4b3f26 73-l::
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74 Create the branch's reflog. This activates recording of
75 all changes made to the branch ref, enabling use of date
967506bb 76 based sha1 expressions such as "<branchname>@\{yesterday}".
3a4b3f26 77
075dd8ee 78-f::
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79 Force the creation of a new branch even if it means deleting
80 a branch that already exists with the same name.
81
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82-m::
83 Move/rename a branch and the corresponding reflog.
84
85-M::
86 Move/rename a branch even if the new branchname already exists.
87
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88--color::
89 Color branches to highlight current, local, and remote branches.
90
91--no-color::
92 Turn off branch colors, even when the configuration file gives the
93 default to color output.
94
2eaf273d 95-r::
7dda22e3 96 List or delete (if used with -d) the remote-tracking branches.
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97
98-a::
99 List both remote-tracking branches and local branches.
075dd8ee 100
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101-v::
102--verbose::
23bfbb81 103 Show sha1 and commit subject line for each head.
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104
105--abbrev=<length>::
106 Alter minimum display length for sha1 in output listing,
107 default value is 7.
108
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109--no-abbrev::
110 Display the full sha1s in output listing rather than abbreviating them.
111
84d176ce 112--track::
ba020ef5 113 When creating a new branch, set up configuration so that 'git-pull'
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114 will automatically retrieve data from the start point, which must be
115 a branch. Use this if you always pull from the same upstream branch
116 into the new branch, and if you don't want to use "git pull
117 <repository> <refspec>" explicitly. This behavior is the default
118 when the start point is a remote branch. Set the
119 branch.autosetupmerge configuration variable to `false` if you want
ba020ef5 120 'git-checkout' and 'git-branch' to always behave as if '--no-track' were
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121 given. Set it to `always` if you want this behavior when the
122 start-point is either a local or remote branch.
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123
124--no-track::
572fc81d 125 Ignore the branch.autosetupmerge configuration variable.
84d176ce 126
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127--contains <commit>::
128 Only list branches which contain the specified commit.
129
130--merged::
131 Only list branches which are fully contained by HEAD.
132
133--no-merged::
134 Do not list branches which are fully contained by HEAD.
135
52a22d1e 136<branchname>::
d4072c97 137 The name of the branch to create or delete.
2b1f4247 138 The new branch name must pass all checks defined by
5162e697 139 linkgit:git-check-ref-format[1]. Some of these checks
2b1f4247 140 may restrict the characters allowed in a branch name.
7fc9d69f 141
075dd8ee 142<start-point>::
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143 The new branch will be created with a HEAD equal to this. It may
144 be given as a branch name, a commit-id, or a tag. If this option
145 is omitted, the current branch is assumed.
146
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147<oldbranch>::
148 The name of an existing branch to rename.
149
150<newbranch>::
151 The new name for an existing branch. The same restrictions as for
152 <branchname> applies.
7fc9d69f 153
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154
155Examples
2eaf273d 156--------
1e2ccd3a 157
dd181119 158Start development off of a known tag::
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159+
160------------
161$ git clone git://git.kernel.org/pub/scm/.../linux-2.6 my2.6
162$ cd my2.6
2eaf273d 163$ git branch my2.6.14 v2.6.14 <1>
1e2ccd3a 164$ git checkout my2.6.14
1e2ccd3a 165------------
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166+
167<1> This step and the next one could be combined into a single step with
168"checkout -b my2.6.14 v2.6.14".
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169
170Delete unneeded branch::
171+
172------------
173$ git clone git://git.kernel.org/.../git.git my.git
174$ cd my.git
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175$ git branch -d -r origin/todo origin/html origin/man <1>
176$ git branch -D test <2>
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177------------
178+
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179<1> Delete remote-tracking branches "todo", "html", "man". Next 'fetch' or
180'pull' will create them again unless you configure them not to. See
5162e697 181linkgit:git-fetch[1].
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182<2> Delete "test" branch even if the "master" branch (or whichever branch is
183currently checked out) does not have all commits from test branch.
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184
185
186Notes
187-----
188
189If you are creating a branch that you want to immediately checkout, it's
190easier to use the git checkout command with its `-b` option to create
191a branch and check it out with a single command.
192
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193The options `--contains`, `--merged` and `--no-merged` serves three related
194but different purposes:
195
196- `--contains <commit>` is used to find all branches which will need
197 special attention if <commit> were to be rebased or amended, since those
198 branches contain the specified <commit>.
199
200- `--merged` is used to find all branches which can be safely deleted,
201 since those branches are fully contained by HEAD.
202
203- `--no-merged` is used to find branches which are candidates for merging
204 into HEAD, since those branches are not fully contained by HEAD.
1e2ccd3a 205
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206Author
207------
59eb68aa 208Written by Linus Torvalds <torvalds@osdl.org> and Junio C Hamano <gitster@pobox.com>
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209
210Documentation
211--------------
212Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
213
214GIT
215---
9e1f0a85 216Part of the linkgit:git[1] suite