--- include/screen.h.orig 2011-04-29 17:21:18.000000000 +0900 +++ include/screen.h 2013-03-11 23:30:07.063088471 +0900 @@ -47,6 +47,7 @@ #define ST_NOTHING -1 #define ST_SCREEN 0 #define ST_XTERM 1 +#define ST_TMUX 2 /* This is here because it happens in so many places */ #define curr_scr_win current_screen->current_window