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GIT-COMMIT-TREE(1)                Git Manual                GIT-COMMIT-TREE(1)



NAME
       git-commit-tree - Create a new commit object

SYNOPSIS
       git commit-tree <tree> [(-p <parent>)...] < changelog
       git commit-tree <tree> [(-p <parent>)...] [(-m <message>)...] [(-F <file>)...]


DESCRIPTION
       This is usually not what an end user wants to run directly. See git-commit(1) instead.

       Creates a new commit object based on the provided tree object and emits the new commit object id on stdout. The
       log message is read from the standard input, unless -m or -F options are given.

       A commit object may have any number of parents. With exactly one parent, it is an ordinary commit. Having more
       than one parent makes the commit a merge between several lines of history. Initial (root) commits have no
       parents.

       While a tree represents a particular directory state of a working directory, a commit represents that state in
       "time", and explains how to get there.

       Normally a commit would identify a new "HEAD" state, and while git doesn't care where you save the note about
       that state, in practice we tend to just write the result to the file that is pointed at by .git/HEAD, so that
       we can always see what the last committed state was.

OPTIONS
       <tree>
           An existing tree object

       -p <parent>
           Each -p indicates the id of a parent commit object.

       -m <message>
           A paragraph in the commit log message. This can be given more than once and each <message> becomes its own
           paragraph.

       -F <file>
           Read the commit log message from the given file. Use - to read from the standard input.

COMMIT INFORMATION
       A commit encapsulates:

       ?   all parent object ids

       ?   author name, email and date

       ?   committer name and email and the commit time.

       While parent object ids are provided on the command line, author and committer information is taken from the
       following environment variables, if set:

           GIT_AUTHOR_NAME
           GIT_AUTHOR_EMAIL
           GIT_AUTHOR_DATE
           GIT_COMMITTER_NAME
           GIT_COMMITTER_EMAIL
           GIT_COMMITTER_DATE
           EMAIL

       (nb "<", ">" and "\n"s are stripped)

       In case (some of) these environment variables are not set, the information is taken from the configuration
       items user.name and user.email, or, if not present, system user name and the hostname used for outgoing mail
       (taken from /etc/mailname and falling back to the fully qualified hostname when that file does not exist).

       A commit comment is read from stdin. If a changelog entry is not provided via "<" redirection, git commit-tree
       will just wait for one to be entered and terminated with ^D.

DATE FORMATS
       The GIT_AUTHOR_DATE, GIT_COMMITTER_DATE environment variables support the following date formats:

       Git internal format
           It is <unix timestamp> <timezone offset>, where <unix timestamp> is the number of seconds since the UNIX
           epoch.  <timezone offset> is a positive or negative offset from UTC. For example CET (which is 2 hours
           ahead UTC) is +0200.

       RFC 2822
           The standard email format as described by RFC 2822, for example Thu, 07 Apr 2005 22:13:13 +0200.

       ISO 8601
           Time and date specified by the ISO 8601 standard, for example 2005-04-07T22:13:13. The parser accepts a
           space instead of the T character as well.

               Note
               In addition, the date part is accepted in the following formats: YYYY.MM.DD, MM/DD/YYYY and DD.MM.YYYY.

DISCUSSION
       At the core level, git is character encoding agnostic.

       ?   The pathnames recorded in the index and in the tree objects are treated as uninterpreted sequences of
           non-NUL bytes. What readdir(2) returns are what are recorded and compared with the data git keeps track of,
           which in turn are expected to be what lstat(2) and creat(2) accepts. There is no such thing as pathname
           encoding translation.

       ?   The contents of the blob objects are uninterpreted sequences of bytes. There is no encoding translation at
           the core level.

       ?   The commit log messages are uninterpreted sequences of non-NUL bytes.

       Although we encourage that the commit log messages are encoded in UTF-8, both the core and git Porcelain are
       designed not to force UTF-8 on projects. If all participants of a particular project find it more convenient to
       use legacy encodings, git does not forbid it. However, there are a few things to keep in mind.

        1.  git commit and git commit-tree issues a warning if the commit log message given to it does not look like a
           valid UTF-8 string, unless you explicitly say your project uses a legacy encoding. The way to say this is
           to have i18n.commitencoding in .git/config file, like this:

               [i18n]
                       commitencoding = ISO-8859-1

           Commit objects created with the above setting record the value of i18n.commitencoding in its encoding
           header. This is to help other people who look at them later. Lack of this header implies that the commit
           log message is encoded in UTF-8.

        2.  git log, git show, git blame and friends look at the encoding header of a commit object, and try to
           re-code the log message into UTF-8 unless otherwise specified. You can specify the desired output encoding
           with i18n.logoutputencoding in .git/config file, like this:

               [i18n]
                       logoutputencoding = ISO-8859-1

           If you do not have this configuration variable, the value of i18n.commitencoding is used instead.

       Note that we deliberately chose not to re-code the commit log message when a commit is made to force UTF-8 at
       the commit object level, because re-coding to UTF-8 is not necessarily a reversible operation.

FILES
       /etc/mailname

SEE ALSO
       git-write-tree(1)

GIT
       Part of the git(1) suite



Git 1.7.11.3                      08/29/2012                GIT-COMMIT-TREE(1)