X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=Documentation%2Fgit-write-tree.txt;h=c85fa89c30e25ed026d2e95a2b537798f878e50f;hb=HEAD;hp=77e12cb949201445ab33992f9ff155f647ce167c;hpb=d69dc373cbf58d88d19dcbc6cff37e12b17f8fd2;p=git.git

diff --git a/Documentation/git-write-tree.txt b/Documentation/git-write-tree.txt
index 77e12cb9..c85fa89c 100644
--- a/Documentation/git-write-tree.txt
+++ b/Documentation/git-write-tree.txt
@@ -8,7 +8,7 @@ git-write-tree - Creates a tree object from the current index
 
 SYNOPSIS
 --------
-'git-write-tree' [--missing-ok]
+'git-write-tree' [--missing-ok] [--prefix=<prefix>/]
 
 DESCRIPTION
 -----------
@@ -30,6 +30,12 @@ OPTIONS
 	directory exist in the object database.  This option disables this
 	check.
 
+--prefix=<prefix>/::
+	Writes a tree object that represents a subdirectory
+	`<prefix>`.  This can be used to write the tree object
+	for a subproject that is in the named subdirectory.
+
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>