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

6       git-commit-tree - Create a new commit object
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SYNOPSIS

9       git commit-tree <tree> [(-p <parent>)...]
10       git commit-tree [(-p <parent>)...] [-S[<keyid>]] [(-m <message>)...]
11                         [(-F <file>)...] <tree>
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13

DESCRIPTION

15       This is usually not what an end user wants to run directly. See git-
16       commit(1) instead.
17
18       Creates a new commit object based on the provided tree object and emits
19       the new commit object id on stdout. The log message is read from the
20       standard input, unless -m or -F options are given.
21
22       A commit object may have any number of parents. With exactly one
23       parent, it is an ordinary commit. Having more than one parent makes the
24       commit a merge between several lines of history. Initial (root) commits
25       have no parents.
26
27       While a tree represents a particular directory state of a working
28       directory, a commit represents that state in "time", and explains how
29       to get there.
30
31       Normally a commit would identify a new "HEAD" state, and while Git
32       doesn’t care where you save the note about that state, in practice we
33       tend to just write the result to the file that is pointed at by
34       .git/HEAD, so that we can always see what the last committed state was.
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OPTIONS

37       <tree>
38           An existing tree object
39
40       -p <parent>
41           Each -p indicates the id of a parent commit object.
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43       -m <message>
44           A paragraph in the commit log message. This can be given more than
45           once and each <message> becomes its own paragraph.
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47       -F <file>
48           Read the commit log message from the given file. Use - to read from
49           the standard input.
50
51       -S[<keyid>], --gpg-sign[=<keyid>]
52           GPG-sign commits. The keyid argument is optional and defaults to
53           the committer identity; if specified, it must be stuck to the
54           option without a space.
55
56       --no-gpg-sign
57           Do not GPG-sign commit, to countermand a --gpg-sign option given
58           earlier on the command line.
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COMMIT INFORMATION

61       A commit encapsulates:
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63       ·   all parent object ids
64
65       ·   author name, email and date
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67       ·   committer name and email and the commit time.
68
69       While parent object ids are provided on the command line, author and
70       committer information is taken from the following environment
71       variables, if set:
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73           GIT_AUTHOR_NAME
74           GIT_AUTHOR_EMAIL
75           GIT_AUTHOR_DATE
76           GIT_COMMITTER_NAME
77           GIT_COMMITTER_EMAIL
78           GIT_COMMITTER_DATE
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80       (nb "<", ">" and "\n"s are stripped)
81
82       In case (some of) these environment variables are not set, the
83       information is taken from the configuration items user.name and
84       user.email, or, if not present, the environment variable EMAIL, or, if
85       that is not set, system user name and the hostname used for outgoing
86       mail (taken from /etc/mailname and falling back to the fully qualified
87       hostname when that file does not exist).
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89       A commit comment is read from stdin. If a changelog entry is not
90       provided via "<" redirection, git commit-tree will just wait for one to
91       be entered and terminated with ^D.
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DATE FORMATS

94       The GIT_AUTHOR_DATE, GIT_COMMITTER_DATE environment variables support
95       the following date formats:
96
97       Git internal format
98           It is <unix timestamp> <time zone offset>, where <unix timestamp>
99           is the number of seconds since the UNIX epoch.  <time zone offset>
100           is a positive or negative offset from UTC. For example CET (which
101           is 1 hour ahead of UTC) is +0100.
102
103       RFC 2822
104           The standard email format as described by RFC 2822, for example
105           Thu, 07 Apr 2005 22:13:13 +0200.
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107       ISO 8601
108           Time and date specified by the ISO 8601 standard, for example
109           2005-04-07T22:13:13. The parser accepts a space instead of the T
110           character as well.
111
112               Note
113               In addition, the date part is accepted in the following
114               formats: YYYY.MM.DD, MM/DD/YYYY and DD.MM.YYYY.
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DISCUSSION

117       Git is to some extent character encoding agnostic.
118
119       ·   The contents of the blob objects are uninterpreted sequences of
120           bytes. There is no encoding translation at the core level.
121
122       ·   Path names are encoded in UTF-8 normalization form C. This applies
123           to tree objects, the index file, ref names, as well as path names
124           in command line arguments, environment variables and config files
125           (.git/config (see git-config(1)), gitignore(5), gitattributes(5)
126           and gitmodules(5)).
127
128           Note that Git at the core level treats path names simply as
129           sequences of non-NUL bytes, there are no path name encoding
130           conversions (except on Mac and Windows). Therefore, using non-ASCII
131           path names will mostly work even on platforms and file systems that
132           use legacy extended ASCII encodings. However, repositories created
133           on such systems will not work properly on UTF-8-based systems (e.g.
134           Linux, Mac, Windows) and vice versa. Additionally, many Git-based
135           tools simply assume path names to be UTF-8 and will fail to display
136           other encodings correctly.
137
138       ·   Commit log messages are typically encoded in UTF-8, but other
139           extended ASCII encodings are also supported. This includes
140           ISO-8859-x, CP125x and many others, but not UTF-16/32, EBCDIC and
141           CJK multi-byte encodings (GBK, Shift-JIS, Big5, EUC-x, CP9xx etc.).
142
143       Although we encourage that the commit log messages are encoded in
144       UTF-8, both the core and Git Porcelain are designed not to force UTF-8
145       on projects. If all participants of a particular project find it more
146       convenient to use legacy encodings, Git does not forbid it. However,
147       there are a few things to keep in mind.
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149        1. git commit and git commit-tree issues a warning if the commit log
150           message given to it does not look like a valid UTF-8 string, unless
151           you explicitly say your project uses a legacy encoding. The way to
152           say this is to have i18n.commitencoding in .git/config file, like
153           this:
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155               [i18n]
156                       commitEncoding = ISO-8859-1
157
158           Commit objects created with the above setting record the value of
159           i18n.commitEncoding in its encoding header. This is to help other
160           people who look at them later. Lack of this header implies that the
161           commit log message is encoded in UTF-8.
162
163        2. git log, git show, git blame and friends look at the encoding
164           header of a commit object, and try to re-code the log message into
165           UTF-8 unless otherwise specified. You can specify the desired
166           output encoding with i18n.logOutputEncoding in .git/config file,
167           like this:
168
169               [i18n]
170                       logOutputEncoding = ISO-8859-1
171
172           If you do not have this configuration variable, the value of
173           i18n.commitEncoding is used instead.
174
175       Note that we deliberately chose not to re-code the commit log message
176       when a commit is made to force UTF-8 at the commit object level,
177       because re-coding to UTF-8 is not necessarily a reversible operation.
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FILES

180       /etc/mailname
181

SEE ALSO

183       git-write-tree(1)
184

GIT

186       Part of the git(1) suite
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190Git 2.20.1                        12/15/2018                GIT-COMMIT-TREE(1)
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