Index: rats_patch.h
===================================================================
--- rats_patch.h	(revision 29117)
+++ rats_patch.h	(revision 29118)
@@ -56,7 +56,7 @@
 const char *pcb_netlist_names[PCB_NUM_NETLISTS];
 
 /* Allocate and append a patch line to the patch list */
-void pcb_ratspatch_append(pcb_board_t *pcb, pcb_rats_patch_op_t op, const char *id, const char *a1, const char *a2);
+void pcb_ratspatch_append(pcb_board_t *pcb, pcb_rats_patch_op_t op, const char *id, const char *a1, const char *a2, int undoable);
 
 /* Free the patch list and all memory claimed by patch list items */
 void pcb_ratspatch_destroy(pcb_board_t *pcb);