def commit(cwd,
           message,
           opts='',
           git_opts='',
           user=None,
           password=None,
           filename=None,
           ignore_retcode=False,
           output_encoding=None):
    '''
    Interface to `git-commit(1)`_

    cwd
        The path to the git checkout

    message
        Commit message

    opts
        Any additional options to add to the command line, in a single string.
        These opts will be added to the end of the git command being run.

        .. note::
            On the Salt CLI, if the opts are preceded with a dash, it is
            necessary to precede them with ``opts=`` (as in the CLI examples
            below) to avoid causing errors with Salt's own argument parsing.

            The ``-m`` option should not be passed here, as the commit message
            will be defined by the ``message`` argument.

    git_opts
        Any additional options to add to git command itself (not the ``commit``
        subcommand), in a single string. This is useful for passing ``-c`` to
        run git with temporary changes to the git configuration.

        .. versionadded:: 2017.7.0

        .. note::
            This is only supported in git 1.7.2 and newer.

    user
        User under which to run the git command. By default, the command is run
        by the user under which the minion is running.

    password
        Windows only. Required when specifying ``user``. This parameter will be
        ignored on non-Windows platforms.

      .. versionadded:: 2016.3.4

    filename
        The location of the file/directory to commit, relative to ``cwd``.
        This argument is optional, and can be used to commit a file without
        first staging it.

        .. note::
            This argument only works on files which are already tracked by the
            git repository.

        .. versionadded:: 2015.8.0

    ignore_retcode : False
        If ``True``, do not log an error to the minion log if the git command
        returns a nonzero exit status.

        .. versionadded:: 2015.8.0

    output_encoding
        Use this option to specify which encoding to use to decode the output
        from any git commands which are run. This should not be needed in most
        cases.

        .. note::
            This should only be needed if the files in the repository were
            created with filenames using an encoding other than UTF-8 to handle
            Unicode characters.

        .. versionadded:: 2018.3.1

    .. _`git-commit(1)`: http://git-scm.com/docs/git-commit

    CLI Examples:

    .. code-block:: bash

        salt myminion git.commit /path/to/repo 'The commit message'
        salt myminion git.commit /path/to/repo 'The commit message' filename=foo/bar.py
    '''
    cwd = _expand_path(cwd, user)
    command = ['git'] + _format_git_opts(git_opts)
    command.extend(['commit', '-m', message])
    command.extend(_format_opts(opts))
    if filename:
        # Add the '--' to terminate CLI args, but only if it wasn't already
        # passed in opts string.
        command.extend(['--', filename])
    return _git_run(command,
                    cwd=cwd,
                    user=user,
                    password=password,
                    ignore_retcode=ignore_retcode,
                    output_encoding=output_encoding)['stdout']