git grep: Add "-z/--null" option as in GNU's grep.

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index 010d9e432231f41a179023df2e85610583b572cf..adb4ea7b1b6c70fb6fc2486487ef34ed280ec015 100644 (file)
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -147,9 +147,9 @@ include::diff-options.txt[]
        to any configured headers, and may be used multiple times.
 
 --cover-letter::
-       Generate a cover letter template.  You still have to fill in
-       a description, but the shortlog and the diffstat will be
-       generated for you.
+       In addition to the patches, generate a cover letter file
+       containing the shortlog and the overall diffstat.  You can
+       fill in a description in the file before sending it out.
 
 --suffix=.<sfx>::
        Instead of using `.patch` as the suffix for generated