completion: support format-patch's --cover-letter option

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 8722a687954ec47a538eff45d41434deedf717fb..8f70e1efc11553ce2360fab8693e2749a3fc36b4 100755 (executable)
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -648,6 +648,7 @@ _git_format_patch ()
                        --in-reply-to=
                        --full-index --binary
                        --not --all
+                       --cover-letter
                        "
                return
                ;;