fix locale

src/utils.cpp

@@ -22,7 +22,7 @@ AutoWin::operator WINDOW*()
 
 void init_ncurses()
 {
-	setlocale(LC_ALL, "en_US.UTF-8");
+	setlocale(LC_ALL, "");	// enable UTF-8 for ncurses
 
 	/* Init ncurses */
 	initscr();			                /* start curses mode */