1 files changed, 8 insertions, 2 deletions
diff --git a/tmux.h b/tmux.h
index cea6c194..5ec263e7 100644
--- a/tmux.h
+++ b/tmux.h
@@ -19,7 +19,7 @@
 #ifndef TMUX_H
 #define TMUX_H
 
-#define PROTOCOL_VERSION 4
+#define PROTOCOL_VERSION 5
 
 #include <sys/param.h>
 #include <sys/time.h>
@@ -130,6 +130,7 @@ enum key_code {
 
 	/* Function keys. */
 	KEYC_F1,
+
 	KEYC_F2,
 	KEYC_F3,
 	KEYC_F4,
@@ -308,7 +309,8 @@ enum msgtype {
 	MSG_WAKEUP,
 	MSG_ENVIRON,
 	MSG_UNLOCK,
-	MSG_LOCK
+	MSG_LOCK,
+	MSG_SHELL
 };
 
 /*
@@ -348,6 +350,10 @@ struct msg_environ_data {
 	char	     	var[ENVIRON_LENGTH];
 };
 
+struct msg_shell_data {
+	char	       	shell[MAXPATHLEN];
+};
+
 /* Mode key commands. */
 enum mode_key_cmd {
 	MODEKEY_NONE,