[PATCH] Optimize diff-tree -[CM] --stdin

diff --git a/Documentation/git-diff-tree.txt b/Documentation/git-diff-tree.txt
index e2a22e0869c5db73a29dd740fe089b43e104abbc..77b1fb1799870ed6017f452b26ea940be05d4036 100644 (file)
--- a/Documentation/git-diff-tree.txt
+++ b/Documentation/git-diff-tree.txt
@@ -54,6 +54,10 @@ OPTIONS
 -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.
+
 --stdin::
        When '--stdin' is specified, the command does not take
        <tree-ish> arguments from the command line.  Instead, it