git-diff-tree(1)
================
-v0.1, May 2005
NAME
----
SYNOPSIS
--------
-'git-diff-tree' [-p] [-r] [-z] [--stdin] [-m] [-s] [-v] [-t] [-R] [-B] [-M] [-C] [--find-copies-harder] [-O<orderfile>] [-S<string>] [--pickaxe-all] <tree-ish> <tree-ish> [<path>...]
+[verse]
+'git-diff-tree' [--stdin] [-m] [-s] [-v] [--no-commit-id] [--pretty]
+ [-t] [-r] [-c | --cc] [--root] [<common diff options>]
+ <tree-ish> [<tree-ish>] [<path>...]
DESCRIPTION
-----------
Compares the content and mode of the blobs found via two tree objects.
+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.
OPTIONS
-------
+include::diff-options.txt[]
+
<tree-ish>::
The id of a tree object.
<path>...::
If provided, the results are limited to a subset of files
matching one of these prefix strings.
- i
e file matches `/^<pattern1>|<pattern2>|.../`
+ i
.e., file matches `/^<pattern1>|<pattern2>|.../`
Note that this parameter does not provide any wildcard or regexp
features.
--p::
- generate patch (see section on generating patches). For
- git-diff-tree, this flag implies '-r' as well.
-
--B::
- Break complete rewrite changes into pairs of delete and create.
-
--M::
- Detect renames.
-
--C::
- Detect copies as well as renames.
-
---find-copies-harder::
- By default, -C option finds copies only if the original
- file of the copy was modified in the same changeset for
- performance reasons. This flag makes the command
- inspect unmodified files as candidates for the source of
- copy. This is a very expensive operation for large
- projects, so use it with caution.
-
--R::
- Swap two input trees.
-
--S<string>::
- Look for differences that contains the change in <string>.
-
---pickaxe-all::
- When -S finds a change, show all the changes in that
- changeset, not just the files that contains the change
- in <string>.
-
--O<orderfile>::
- Output the patch in the order specified in the
- <orderfile>, which has one shell glob pattern per line.
-
-r::
- recurse
+ recurse into sub-trees
-t::
show tree entry itself as well as subtrees. Implies -r.
--z::
- \0 line termination on output
-
--root::
When '--root' is specified the initial commit will be showed as a big
creation event. This is equivalent to a diff against the NULL tree.
+
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
-behaviour. This does not apply to the case where two <tree-ish>
+behavior. This does not apply to the case where two <tree-ish>
separated with a single space are given.
-m::
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.
+ differences to that commit from all of its parents. See
+ 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 supressed. It is
+ form (with '-p'). This output can be suppressed. It is
only useful with '-v' flag.
-v::
commit message. Without "=<style>", it defaults to
medium.
+--no-commit-id::
+ 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
+ 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).
+ 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.
+
+--always::
+ Show the commit itself and the commit log message even
+ if the diff itself is empty.
+
Limiting Output
---------------
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 complete path comonent.
+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-cache.c
+ *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
+-----------------------------------------------------------------------------
+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-cache" print out all the root commits it finds.
+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.
+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).
GIT
---
-Part of the link:git.html[git] suite
+Part of the gitlink:git[7] suite