git/Documentation/gitmodules.txt
Johan Herland 42b4917862 git-submodule: add support for --merge.
'git submodule update --merge' merges the commit referenced by the
superproject into your local branch, instead of checking it out on
a detached HEAD.

As evidenced by the addition of "git submodule update --rebase", it
is useful to provide alternatives to the default 'checkout' behaviour
of "git submodule update". One such alternative is, when updating a
submodule to a new commit, to merge that commit into the current
local branch in that submodule. This is useful in workflows where
you want to update your submodule from its upstream, but you cannot
use --rebase, because you have downstream people working on top of
your submodule branch, and you don't want to disrupt their work.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-03 00:09:16 -07:00

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gitmodules(5)
=============
NAME
----
gitmodules - defining submodule properties
SYNOPSIS
--------
$GIT_WORK_DIR/.gitmodules
DESCRIPTION
-----------
The `.gitmodules` file, located in the top-level directory of a git
working tree, is a text file with a syntax matching the requirements
of linkgit:git-config[1].
The file contains one subsection per submodule, and the subsection value
is the name of the submodule. Each submodule section also contains the
following required keys:
submodule.<name>.path::
Defines the path, relative to the top-level directory of the git
working tree, where the submodule is expected to be checked out.
The path name must not end with a `/`. All submodule paths must
be unique within the .gitmodules file.
submodule.<name>.url::
Defines an url from where the submodule repository can be cloned.
submodule.<name>.update::
Defines what to do when the submodule is updated by the superproject.
If 'checkout' (the default), the new commit specified in the
superproject will be checked out in the submodule on a detached HEAD.
If 'rebase', the current branch of the submodule will be rebased onto
the commit specified in the superproject. If 'merge', the commit
specified in the superproject will be merged into the current branch
in the submodule.
This config option is overridden if 'git submodule update' is given
the '--merge' or '--rebase' options.
EXAMPLES
--------
Consider the following .gitmodules file:
[submodule "libfoo"]
path = include/foo
url = git://foo.com/git/lib.git
[submodule "libbar"]
path = include/bar
url = git://bar.com/git/lib.git
This defines two submodules, `libfoo` and `libbar`. These are expected to
be checked out in the paths 'include/foo' and 'include/bar', and for both
submodules an url is specified which can be used for cloning the submodules.
SEE ALSO
--------
linkgit:git-submodule[1] linkgit:git-config[1]
DOCUMENTATION
-------------
Documentation by Lars Hjemli <hjemli@gmail.com>
GIT
---
Part of the linkgit:git[1] suite