completion: complete values for log.date

Add raw to the date formats too.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/completion/git-completion.bash

@@ -1116,6 +1116,7 @@ __git_log_shortlog_options="
 "
 
 __git_log_pretty_formats="oneline short medium full fuller email raw format:"
+__git_log_date_formats="relative iso8601 rfc2822 short local default raw"
 
 _git_log ()
 {
@@ -1139,9 +1140,7 @@ _git_log ()
 		return
 		;;
 	--date=*)
-		__gitcomp "
-			relative iso8601 rfc2822 short local default
-		" "" "${cur##--date=}"
+		__gitcomp "$__git_log_date_formats" "" "${cur##--date=}"
 		return
 		;;
 	--*)
@@ -1352,6 +1351,10 @@ _git_config ()
 		__gitcomp "man info web html"
 		return
 		;;
+	log.date)
+		__gitcomp "$__git_log_date_formats"
+		return
+		;;
 	*.*)
 		COMPREPLY=()
 		return