7f18bbfc60973bfe38305bcfc034d7caf0123abd
   1git-diff-tree(1)
   2================
   3v0.1, May 2005
   4
   5NAME
   6----
   7git-diff-tree - Compares the content and mode of blobs found via two tree objects
   8
   9
  10SYNOPSIS
  11--------
  12'git-diff-tree' [--stdin] [-m] [-s] [-v] [--pretty] [-t] [<common diff options>] <tree-ish> [<tree-ish>] [<path>...]
  13
  14DESCRIPTION
  15-----------
  16Compares the content and mode of the blobs found via two tree objects.
  17
  18If there is only one <tree-ish> given, the commit is compared with its parents
  19(see --stdin below).
  20
  21Note that "git-diff-tree" can use the tree encapsulated in a commit object.
  22
  23OPTIONS
  24-------
  25include::diff-options.txt[]
  26
  27<tree-ish>::
  28        The id of a tree object.
  29
  30<path>...::
  31        If provided, the results are limited to a subset of files
  32        matching one of these prefix strings.
  33        ie file matches `/^<pattern1>|<pattern2>|.../`
  34        Note that this parameter does not provide any wildcard or regexp
  35        features.
  36
  37-t::
  38        show tree entry itself as well as subtrees.  Implies -r.
  39
  40--root::
  41        When '--root' is specified the initial commit will be showed as a big
  42        creation event. This is equivalent to a diff against the NULL tree.
  43
  44--stdin::
  45        When '--stdin' is specified, the command does not take
  46        <tree-ish> arguments from the command line.  Instead, it
  47        reads either one <commit> or a pair of <tree-ish>
  48        separated with a single space from its standard input.
  49+
  50When a single commit is given on one line of such input, it compares
  51the commit with its parents.  The following flags further affects its
  52behaviour.  This does not apply to the case where two <tree-ish>
  53separated with a single space are given.
  54
  55-m::
  56        By default, "git-diff-tree --stdin" does not show
  57        differences for merge commits.  With this flag, it shows
  58        differences to that commit from all of its parents.
  59
  60-s::
  61        By default, "git-diff-tree --stdin" shows differences,
  62        either in machine-readable form (without '-p') or in patch
  63        form (with '-p').  This output can be supressed.  It is
  64        only useful with '-v' flag.
  65
  66-v::
  67        This flag causes "git-diff-tree --stdin" to also show
  68        the commit message before the differences.
  69
  70--pretty[=(raw|medium|short)]::
  71        This is used to control "pretty printing" format of the
  72        commit message.  Without "=<style>", it defaults to
  73        medium.
  74
  75
  76Limiting Output
  77---------------
  78If you're only interested in differences in a subset of files, for
  79example some architecture-specific files, you might do:
  80
  81        git-diff-tree -r <tree-ish> <tree-ish> arch/ia64 include/asm-ia64
  82
  83and it will only show you what changed in those two directories.
  84
  85Or if you are searching for what changed in just `kernel/sched.c`, just do
  86
  87        git-diff-tree -r <tree-ish> <tree-ish> kernel/sched.c
  88
  89and it will ignore all differences to other files.
  90
  91The pattern is always the prefix, and is matched exactly.  There are no
  92wildcards.  Even stricter, it has to match a complete path component.
  93I.e. "foo" does not pick up `foobar.h`.  "foo" does match `foo/bar.h`
  94so it can be used to name subdirectories.
  95
  96An example of normal usage is:
  97
  98  torvalds@ppc970:~/git> git-diff-tree 5319e4......
  99  *100664->100664 blob    ac348b.......->a01513.......      git-fsck-objects.c
 100
 101which tells you that the last commit changed just one file (it's from
 102this one:
 103
 104  commit 3c6f7ca19ad4043e9e72fa94106f352897e651a8
 105  tree 5319e4d609cdd282069cc4dce33c1db559539b03
 106  parent b4e628ea30d5ab3606119d2ea5caeab141d38df7
 107  author Linus Torvalds <torvalds@ppc970.osdl.org> Sat Apr 9 12:02:30 2005
 108  committer Linus Torvalds <torvalds@ppc970.osdl.org> Sat Apr 9 12:02:30 2005
 109
 110  Make "git-fsck-objects" print out all the root commits it finds.
 111
 112  Once I do the reference tracking, I'll also make it print out all the
 113  HEAD commits it finds, which is even more interesting.
 114
 115in case you care).
 116
 117Output format
 118-------------
 119include::diff-format.txt[]
 120
 121
 122Author
 123------
 124Written by Linus Torvalds <torvalds@osdl.org>
 125
 126Documentation
 127--------------
 128Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
 129
 130GIT
 131---
 132Part of the gitlink:git[7] suite
 133