Index: wire.c
===================================================================
--- wire.c	(revision 18486)
+++ wire.c	(revision 18487)
@@ -44,7 +44,7 @@
 	memcpy(dst->points, src->points, src->point_num*sizeof(wire_point_t));
 }
 
-static int node_index(wire_t *w, wirelist_node_t *node)
+int wire_node_index(wire_t *w, wirelist_node_t *node)
 {
   int i;
   for (i = 0; i < w->point_num; i++) {
Index: wire.h
===================================================================
--- wire.h	(revision 18486)
+++ wire.h	(revision 18487)
@@ -31,6 +31,7 @@
 void wire_pop_point(wire_t *w);
 void wire_copy(wire_t *dst, wire_t *src);
 
+int wire_node_index(wire_t *w, wirelist_node_t *node);
 int wire_is_node_connected_with_point(wirelist_node_t *node, point_t *p);
 int wire_is_coincident_at_node(wirelist_node_t *node, point_t *p1, point_t *p2);
 int wire_point_position(wire_point_t *wp); /* counting from the inside */