Detach all but specified client

detach-client

diff --git a/trunk/cmd-detach-client.c b/trunk/cmd-detach-client.c
index d1010a5..2f70ed3 100644
--- a/trunk/cmd-detach-client.c
+++ b/trunk/cmd-detach-client.c
@@ -28,7 +28,7 @@ int	cmd_detach_client_exec(struct cmd *, struct cmd_ctx *);
 
 const struct cmd_entry cmd_detach_client_entry = {
 	"detach-client", "detach",
-	"s:t:P", 0, 0,
+	"as:t:P", 0, 0,
 	"[-P] [-s target-session] " CMD_TARGET_CLIENT_USAGE,
 	CMD_READONLY,
 	NULL,
@@ -40,7 +40,7 @@ int
 cmd_detach_client_exec(struct cmd *self, struct cmd_ctx *ctx)
 {
 	struct args	*args = self->args;
-	struct client	*c;
+	struct client	*c, *c2;
 	struct session 	*s;
 	enum msgtype     msgtype;
 	u_int 		 i;
@@ -65,7 +65,15 @@ cmd_detach_client_exec(struct cmd *self, struct cmd_ctx *ctx)
 		if (c == NULL)
 			return (-1);
 
-		server_write_client(c, msgtype, NULL, 0);
+		if (args_has(args, 'a')) {
+			for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
+				c2 = ARRAY_ITEM(&clients, i);
+				if (c != c2)
+					server_write_client(
+						c2, msgtype, NULL, 0);
+			}
+		} else
+			server_write_client(c, msgtype, NULL, 0);
 	}
 
 	return (0);