If there is only one <tree-ish> given, the commit is compared with its parents
(see --stdin below).
-Note that `git-diff-tree` can use the tree encapsulated in a commit object.
+Note that 'git diff-tree' can use the tree encapsulated in a commit object.
OPTIONS
-------
<path>...::
If provided, the results are limited to a subset of files
- matching one of these prefix strings.
- i.e., file matches `/^<pattern1>|<pattern2>|.../`
- Note that this parameter does not provide any wildcard or regexp
- features.
+ matching one of the provided pathspecs.
-r::
recurse into sub-trees
show tree entry itself as well as subtrees. Implies -r.
--root::
- When '--root' is specified the initial commit will be showed as a big
+ When `--root` is specified the initial commit will be shown as a big
creation event. This is equivalent to a diff against the NULL tree.
--stdin::
- When '--stdin' is specified, the command does not take
+ When `--stdin` is specified, the command does not take
<tree-ish> arguments from the command line. Instead, it
- reads either one <commit> or a pair of <tree-ish>
- separated with a single space from its standard input.
+ reads lines containing either two <tree>, one <commit>, or a
+ list of <commit> from its standard input. (Use a single space
+ as separator.)
+
-When a single commit is given on one line of such input, it compares
-the commit with its parents. The following flags further affects its
-behavior. This does not apply to the case where two <tree-ish>
-separated with a single space are given.
+When two trees are given, it compares the first tree with the second.
+When a single commit is given, it compares the commit with its
+parents. The remaining commits, when given, are used as if they are
+parents of the first commit.
++
+When comparing two trees, the ID of both trees (separated by a space
+and terminated by a newline) is printed before the difference. When
+comparing commits, the ID of the first (or only) commit, followed by a
+newline, is printed.
++
+The following flags further affect the behavior when comparing
+commits (but not trees).
-m::
- By default, `git-diff-tree --stdin` does not show
+ By default, 'git diff-tree --stdin' does not show
differences for merge commits. With this flag, it shows
differences to that commit from all of its parents. See
- also '-c'.
+ also `-c`.
-s::
- By default, `git-diff-tree --stdin` shows differences,
- either in machine-readable form (without '-p') or in patch
- form (with '-p'). This output can be suppressed. It is
- only useful with '-v' flag.
+ By default, 'git diff-tree --stdin' shows differences,
+ either in machine-readable form (without `-p`) or in patch
+ form (with `-p`). This output can be suppressed. It is
+ only useful with `-v` flag.
-v::
- This flag causes `git-diff-tree --stdin` to also show
+ This flag causes 'git diff-tree --stdin' to also show
the commit message before the differences.
include::pretty-options.txt[]
--no-commit-id::
- `git-diff-tree` outputs a line with the commit ID when
+ 'git diff-tree' outputs a line with the commit ID when
applicable. This flag suppressed the commit ID output.
-c::
This flag changes the way a merge commit is displayed
(which means it is useful only when the command is given
- one <tree-ish>, or '--stdin'). It shows the differences
+ one <tree-ish>, or `--stdin`). It shows the differences
from each of the parents to the merge result simultaneously
instead of showing pairwise diff between a parent and the
- result one at a time (which is what the '-m' option does).
+ result one at a time (which is what the `-m` option does).
Furthermore, it lists only files which were modified
from all parents.
--cc::
This flag changes the way a merge commit patch is displayed,
- in a similar way to the '-c' option. It implies the '-c'
- and '-p' options and further compresses the patch output
- by omitting hunks that show differences from only one
- parent, or show the same change from all but one parent
- for an Octopus merge. When this optimization makes all
- hunks disappear, the commit itself and the commit log
- message is not shown, just like in any other "empty diff" case.
+ in a similar way to the `-c` option. It implies the `-c`
+ and `-p` options and further compresses the patch output
+ by omitting uninteresting hunks whose the contents in the parents
+ have only two variants and the merge result picks one of them
+ without modification. When all hunks are uninteresting, the commit
+ itself and the commit log message is not shown, just like in any other
+ "empty diff" case.
--always::
Show the commit itself and the commit log message even
include::pretty-formats.txt[]
-
-
-Limiting Output
----------------
-If you're only interested in differences in a subset of files, for
-example some architecture-specific files, you might do:
-
- git diff-tree -r <tree-ish> <tree-ish> arch/ia64 include/asm-ia64
-
-and it will only show you what changed in those two directories.
-
-Or if you are searching for what changed in just `kernel/sched.c`, just do
-
- git diff-tree -r <tree-ish> <tree-ish> kernel/sched.c
-
-and it will ignore all differences to other files.
-
-The pattern is always the prefix, and is matched exactly. There are no
-wildcards. Even stricter, it has to match a complete path component.
-I.e. "foo" does not pick up `foobar.h`. "foo" does match `foo/bar.h`
-so it can be used to name subdirectories.
-
-An example of normal usage is:
-
- torvalds@ppc970:~/git> git diff-tree 5319e4......
- *100664->100664 blob ac348b.......->a01513....... git-fsck-objects.c
-
-which tells you that the last commit changed just one file (it's from
-this one:
-
------------------------------------------------------------------------------
-commit 3c6f7ca19ad4043e9e72fa94106f352897e651a8
-tree 5319e4d609cdd282069cc4dce33c1db559539b03
-parent b4e628ea30d5ab3606119d2ea5caeab141d38df7
-author Linus Torvalds <torvalds@ppc970.osdl.org> Sat Apr 9 12:02:30 2005
-committer Linus Torvalds <torvalds@ppc970.osdl.org> Sat Apr 9 12:02:30 2005
-
-Make "git-fsck-objects" print out all the root commits it finds.
-
-Once I do the reference tracking, I'll also make it print out all the
-HEAD commits it finds, which is even more interesting.
------------------------------------------------------------------------------
-
-in case you care).
-
-Output format
--------------
include::diff-format.txt[]
-
-Author
-------
-Written by Linus Torvalds <torvalds@osdl.org>
-
-Documentation
---------------
-Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
-
GIT
---
Part of the linkgit:git[1] suite