[PATCH] Documentation: read-tree --prefix works with existing subtrees

[Clemens Buchacher <drizzd@aon.at>]

Since 34110cd4 (Make 'unpack_trees()' have a separate source and
destination index) it is no longer true that a subdirectory with
the same prefix must not exist.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
---
 Documentation/git-read-tree.txt |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 5375549..a43e874 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -83,11 +83,10 @@ OPTIONS
 
 --prefix=<prefix>/::
 	Keep the current index contents, and read the contents
-	of the named tree-ish under the directory at `<prefix>`. The
-	original index file cannot have anything at the path
-	`<prefix>` itself, nor anything in the `<prefix>/`
-	directory.  Note that the `<prefix>/` value must end
-	with a slash.
+	of the named tree-ish under the directory at `<prefix>`.
+	The command will refuse to overwrite entries that already
+	existed in the original index file. Note that the `<prefix>/`
+	value must end with a slash.
 
 --exclude-per-directory=<gitignore>::
 	When running the command with `-u` and `-m` options, the
-- 
1.7.8