Documentation: i18n commit log message notes.
[git/git.git] / Documentation / i18n.txt
1 At the core level, git is character encoding agnostic.
3 - The pathnames recorded in the index and in the tree objects
4 are treated as uninterpreted sequences of non-NUL bytes.
5 What readdir(2) returns are what are recorded and compared
6 with the data git keeps track of, which in turn are expected
7 to be what lstat(2) and creat(2) accepts. There is no such
8 thing as pathname encoding translation.
10 - The contents of the blob objects are uninterpreted sequence
11 of bytes. There is no encoding translation at the core
12 level.
14 - The commit log messages are uninterpreted sequence of non-NUL
15 bytes.
17 Although we encourage that the commit log messages are encoded
18 in UTF-8, both the core and git Porcelain are designed not to
19 force UTF-8 on projects. If all participants of a particular
20 project find it more convenient to use legacy encodings, git
21 does not forbid it. However, there are a few things to keep in
22 mind.
24 . `git-commit-tree` (hence, `git-commit` which uses it) issues
25 an warning if the commit log message given to it does not look
26 like a valid UTF-8 string, unless you explicitly say your
27 project uses a legacy encoding. The way to say this is to
28 have core.commitencoding in `.git/config` file, like this:
29 +
30 ------------
31 [core]
32 commitencoding = ISO-8859-1
33 ------------
34 +
35 Commit objects created with the above setting record the value
36 of `core.commitencoding` in its `encoding` header. This is to
37 help other people who look at them later. Lack of this header
38 implies that the commit log message is encoded in UTF-8.
40 . `git-log`, `git-show` and friends looks at the `encoding`
41 header of a commit object, and tries to re-code the log
42 message into UTF-8 unless otherwise specified. You can
43 specify the desired output encoding with
44 `core.logoutputencoding` in `.git/config` file, like this:
45 +
46 ------------
47 [core]
48 logoutputencoding = ISO-8859-1
49 ------------
50 +
51 If you do not have this configuration variable, the value of
52 `core.commitencoding` is used instead.
54 Note that we deliberately chose not to re-code the commit log
55 message when a commit is made to force UTF-8 at the commit
56 object level, because re-coding to UTF-8 is not necessarily a
57 reversible operation.