[PATCH 2/2] docs: update behavior of git-cat-file --buffer

["John Cai via GitGitGadget" <gitgitgadget@gmail.com>]

From: John Cai <johncai86@gmail.com>

When an empty string is entered into stdin, git-cat-file --buffer will
flush stdout immediately. This commit updates the man page accordingly.

Signed-off-by: John Cai <johncai86@gmail.com>
---
 Documentation/git-cat-file.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/git-cat-file.txt b/Documentation/git-cat-file.txt
index 27b27e2b300..c98e8dc3669 100644
--- a/Documentation/git-cat-file.txt
+++ b/Documentation/git-cat-file.txt
@@ -104,7 +104,8 @@ OPTIONS
 	that a process can interactively read and write from
 	`cat-file`. With this option, the output uses normal stdio
 	buffering; this is much more efficient when invoking
-	`--batch-check` on a large number of objects.
+	`--batch-check` on a large number of objects. An empty string will
+	force a flush of stdout.
 
 --unordered::
 	When `--batch-all-objects` is in use, visit objects in an
-- 
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