4 The raw output format from "git-diff-index", "git-diff-tree",
5 "git-diff-files" and "git diff --raw" are very similar.
7 These commands all compare two sets of things; what is
10 git-diff-index <tree-ish>::
11 compares the <tree-ish> and the files on the filesystem.
13 git-diff-index --cached <tree-ish>::
14 compares the <tree-ish> and the index.
16 git-diff-tree [-r] <tree-ish-1> <tree-ish-2> [<pattern>...]::
17 compares the trees named by the two arguments.
19 git-diff-files [<pattern>...]::
20 compares the index and the files on the filesystem.
22 The "git-diff-tree" command begins its output by printing the hash of
23 what is being compared. After that, all the commands print one output
24 line per changed file.
26 An output line is formatted this way:
28 ------------------------------------------------
29 in-place edit :100644 100644 bcd1234 0123456 M file0
30 copy-edit :100644 100644 abcd123 1234567 C68 file1 file2
31 rename-edit :100644 100644 abcd123 1234567 R86 file1 file3
32 create :000000 100644 0000000 1234567 A file4
33 delete :100644 000000 1234567 0000000 D file5
34 unmerged :000000 000000 0000000 0000000 U file6
35 ------------------------------------------------
37 That is, from the left to the right:
40 . mode for "src"; 000000 if creation or unmerged.
42 . mode for "dst"; 000000 if deletion or unmerged.
44 . sha1 for "src"; 0\{40\} if creation or unmerged.
46 . sha1 for "dst"; 0\{40\} if creation, unmerged or "look at work tree".
48 . status, followed by optional "score" number.
49 . a tab or a NUL when `-z` option is used.
51 . a tab or a NUL when `-z` option is used; only exists for C or R.
52 . path for "dst"; only exists for C or R.
53 . an LF or a NUL when `-z` option is used, to terminate the record.
55 Possible status letters are:
57 - A: addition of a file
58 - C: copy of a file into a new one
59 - D: deletion of a file
60 - M: modification of the contents or mode of a file
61 - R: renaming of a file
62 - T: change in the type of the file (regular file, symbolic link or submodule)
63 - U: file is unmerged (you must complete the merge before it can
65 - X: "unknown" change type (most probably a bug, please report it)
67 Status letters C and R are always followed by a score (denoting the
68 percentage of similarity between the source and target of the move or
69 copy). Status letter M may be followed by a score (denoting the
70 percentage of dissimilarity) for file rewrites.
72 <sha1> is shown as all 0's if a file is new on the filesystem
73 and it is out of sync with the index.
77 ------------------------------------------------
78 :100644 100644 5be4a4a 0000000 M file.c
79 ------------------------------------------------
81 Without the `-z` option, pathnames with "unusual" characters are
82 quoted as explained for the configuration variable `core.quotePath`
83 (see linkgit:git-config[1]). Using `-z` the filename is output
84 verbatim and the line is terminated by a NUL byte.
86 diff format for merges
87 ----------------------
89 "git-diff-tree", "git-diff-files" and "git-diff --raw"
90 can take `-c` or `--cc` option
91 to generate diff output also for merge commits. The output differs
92 from the format described above in the following way:
94 . there is a colon for each parent
95 . there are more "src" modes and "src" sha1
96 . status is concatenated status characters for each parent
97 . no optional "score" number
98 . tab-separated pathname(s) of the file
100 For `-c` and `--cc`, only the destination or final path is shown even
101 if the file was renamed on any side of history. With
102 `--combined-all-paths`, the name of the path in each parent is shown
103 followed by the name of the path in the merge commit.
105 Examples for `-c` and `--cc` without `--combined-all-paths`:
106 ------------------------------------------------
107 ::100644 100644 100644 fabadb8 cc95eb0 4866510 MM desc.c
108 ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM bar.sh
109 ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR phooey.c
110 ------------------------------------------------
112 Examples when `--combined-all-paths` added to either `-c` or `--cc`:
114 ------------------------------------------------
115 ::100644 100644 100644 fabadb8 cc95eb0 4866510 MM desc.c desc.c desc.c
116 ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM foo.sh bar.sh bar.sh
117 ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR fooey.c fuey.c phooey.c
118 ------------------------------------------------
120 Note that 'combined diff' lists only files which were modified from
124 include::diff-generate-patch.txt[]
130 The `--summary` option describes newly added, deleted, renamed and
131 copied files. The `--stat` option adds diffstat(1) graph to the
132 output. These options can be combined with other options, such as
133 `-p`, and are meant for human consumption.
135 When showing a change that involves a rename or a copy, `--stat` output
136 formats the pathnames compactly by combining common prefix and suffix of
137 the pathnames. For example, a change that moves `arch/i386/Makefile` to
138 `arch/x86/Makefile` while modifying 4 lines will be shown like this:
140 ------------------------------------
141 arch/{i386 => x86}/Makefile | 4 +--
142 ------------------------------------
144 The `--numstat` option gives the diffstat(1) information but is designed
145 for easier machine consumption. An entry in `--numstat` output looks
148 ----------------------------------------
150 3 1 arch/{i386 => x86}/Makefile
151 ----------------------------------------
153 That is, from left to right:
155 . the number of added lines;
157 . the number of deleted lines;
159 . pathname (possibly with rename/copy information);
162 When `-z` output option is in effect, the output is formatted this way:
164 ----------------------------------------
166 3 1 NUL arch/i386/Makefile NUL arch/x86/Makefile NUL
167 ----------------------------------------
171 . the number of added lines;
173 . the number of deleted lines;
175 . a NUL (only exists if renamed/copied);
176 . pathname in preimage;
177 . a NUL (only exists if renamed/copied);
178 . pathname in postimage (only exists if renamed/copied);
181 The extra `NUL` before the preimage path in renamed case is to allow
182 scripts that read the output to tell if the current record being read is
183 a single-path record or a rename/copy record without reading ahead.
184 After reading added and deleted lines, reading up to `NUL` would yield
185 the pathname, but if that is `NUL`, the record will show two paths.