relaunch ontop of latest grbl edge

code very messy but tested

sim/runtime.c

@@ -0,0 +1,38 @@
+/*
+  runtime.c - replacement for the modul of the same name in grbl
+    Run time commands are not processed in the simulator.
+    Instead, the execute_runtime() is used as a hook to handle stepper simulation
+    and printing of simulation results.
+
+  Part of Grbl Simulator
+
+  Copyright (c) 2012 Jens Geisler
+
+  Grbl is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Grbl is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with Grbl.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "simulator.h"
+#include <stdio.h>
+
+void orig_protocol_execute_runtime(void);
+
+// replacement for original execute_runtime as a hook to print blocks as they are generated
+// and to control simulation of buffered blocks
+void protocol_execute_runtime(void) {
+  orig_protocol_execute_runtime();
+  //printf("printBlock():\n");
+  printBlock();
+  //printf("handle_buffer():\n");
+  handle_buffer();
+}