git-commit: revamp the git-commit semantics.

diff --git a/Documentation/git-diff-tree.txt b/Documentation/git-diff-tree.txt
index dcfb9e18c7041c005bfce0671bfda8b2ac31c656..674ee614c350ad7b77c1315e12d10e33ace01894 100644 (file)
--- a/Documentation/git-diff-tree.txt
+++ b/Documentation/git-diff-tree.txt
@@ -8,7 +8,10 @@ git-diff-tree - Compares the content and mode of blobs found via two tree object
 
 SYNOPSIS
 --------
-'git-diff-tree' [--stdin] [-m] [-s] [-v] [--pretty] [-t] [<common diff options>] <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
 -----------
@@ -33,6 +36,9 @@ include::diff-options.txt[]
        Note that this parameter does not provide any wildcard or regexp
        features.
 
+-r::
+        recurse into sub-trees
+
 -t::
        show tree entry itself as well as subtrees.  Implies -r.
 
@@ -59,7 +65,7 @@ separated with a single space are given.
 -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::
@@ -71,6 +77,24 @@ separated with a single space are given.
        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,--cc::
+       These flags change 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 '-m' option
+       output does.  '--cc' further compresses the output by
+       omiting 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 any other "empty diff" cases.
+
 
 Limiting Output
 ---------------