6 git-diff-tree - Compares the content and mode of blobs found via two tree objects
12 'git-diff-tree' [--stdin] [-m] [-s] [-v] [--no-commit-id] [--pretty]
13 [-t] [-r] [-c | --cc] [--root] [<common diff options>]
14 <tree-ish> [<tree-ish>] [<path>...]
18 Compares the content and mode of the blobs found via two tree objects.
20 If there is only one <tree-ish> given, the commit is compared with its parents
23 Note that "git-diff-tree" can use the tree encapsulated in a commit object.
27 include::diff-options.txt[]
30 The id of a tree object.
33 If provided, the results are limited to a subset of files
34 matching one of these prefix strings.
35 i.e., file matches `/^<pattern1>|<pattern2>|.../`
36 Note that this parameter does not provide any wildcard or regexp
40 recurse into sub-trees
43 show tree entry itself as well as subtrees. Implies -r.
46 When '--root' is specified the initial commit will be showed as a big
47 creation event. This is equivalent to a diff against the NULL tree.
50 When '--stdin' is specified, the command does not take
51 <tree-ish> arguments from the command line. Instead, it
52 reads either one <commit> or a pair of <tree-ish>
53 separated with a single space from its standard input.
55 When a single commit is given on one line of such input, it compares
56 the commit with its parents. The following flags further affects its
57 behavior. This does not apply to the case where two <tree-ish>
58 separated with a single space are given.
61 By default, "git-diff-tree --stdin" does not show
62 differences for merge commits. With this flag, it shows
63 differences to that commit from all of its parents. See
67 By default, "git-diff-tree --stdin" shows differences,
68 either in machine-readable form (without '-p') or in patch
69 form (with '-p'). This output can be suppressed. It is
70 only useful with '-v' flag.
73 This flag causes "git-diff-tree --stdin" to also show
74 the commit message before the differences.
76 include::pretty-options.txt[]
79 git-diff-tree outputs a line with the commit ID when
80 applicable. This flag suppressed the commit ID output.
83 This flag changes the way a merge commit is displayed
84 (which means it is useful only when the command is given
85 one <tree-ish>, or '--stdin'). It shows the differences
86 from each of the parents to the merge result simultaneously
87 instead of showing pairwise diff between a parent and the
88 result one at a time (which is what the '-m' option does).
89 Furthermore, it lists only files which were modified
93 This flag changes the way a merge commit patch is displayed,
94 in a similar way to the '-c' option. It implies the '-c'
95 and '-p' options and further compresses the patch output
96 by omitting hunks that show differences from only one
97 parent, or show the same change from all but one parent
98 for an Octopus merge. When this optimization makes all
99 hunks disappear, the commit itself and the commit log
100 message is not shown, just like in any other "empty diff" case.
103 Show the commit itself and the commit log message even
104 if the diff itself is empty.
107 include::pretty-formats.txt[]
112 If you're only interested in differences in a subset of files, for
113 example some architecture-specific files, you might do:
115 git-diff-tree -r <tree-ish> <tree-ish> arch/ia64 include/asm-ia64
117 and it will only show you what changed in those two directories.
119 Or if you are searching for what changed in just `kernel/sched.c`, just do
121 git-diff-tree -r <tree-ish> <tree-ish> kernel/sched.c
123 and it will ignore all differences to other files.
125 The pattern is always the prefix, and is matched exactly. There are no
126 wildcards. Even stricter, it has to match a complete path component.
127 I.e. "foo" does not pick up `foobar.h`. "foo" does match `foo/bar.h`
128 so it can be used to name subdirectories.
130 An example of normal usage is:
132 torvalds@ppc970:~/git> git-diff-tree 5319e4......
133 *100664->100664 blob ac348b.......->a01513....... git-fsck-objects.c
135 which tells you that the last commit changed just one file (it's from
138 -----------------------------------------------------------------------------
139 commit 3c6f7ca19ad4043e9e72fa94106f352897e651a8
140 tree 5319e4d609cdd282069cc4dce33c1db559539b03
141 parent b4e628ea30d5ab3606119d2ea5caeab141d38df7
142 author Linus Torvalds <torvalds@ppc970.osdl.org> Sat Apr 9 12:02:30 2005
143 committer Linus Torvalds <torvalds@ppc970.osdl.org> Sat Apr 9 12:02:30 2005
145 Make "git-fsck-objects" print out all the root commits it finds.
147 Once I do the reference tracking, I'll also make it print out all the
148 HEAD commits it finds, which is even more interesting.
149 -----------------------------------------------------------------------------
155 include::diff-format.txt[]
160 Written by Linus Torvalds <torvalds@osdl.org>
164 Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
168 Part of the gitlink:git[7] suite