Index: trunk/src/obj_line.c
===================================================================
--- trunk/src/obj_line.c	(revision 31741)
+++ trunk/src/obj_line.c	(revision 31742)
@@ -171,13 +171,6 @@
 	jmp_buf env;
 };
 
-typedef enum {
-	PCB_LINMER_NONE = 0,  /* no merge is possible */
-	PCB_LINMER_REMPT = 1, /* remove both endpoints passed back in out */
-	PCB_LINMER_SKIP = 2   /* do not create the new line at all */
-} pcb_line_merge_t;
-
-/* returns 0 if , 1 if merge is done, */
 RND_INLINE int can_merge_lines(const pcb_line_t *old_line, const pcb_line_t *new_line, pcb_line_t *out)
 {
 	/* do not merge to subc parts or terminals */
@@ -239,6 +232,12 @@
 	return PCB_LINMER_NONE;
 }
 
+int pcb_line_can_merge_lines(const pcb_line_t *old_line, const pcb_line_t *new_line, pcb_line_t *out)
+{
+	return can_merge_lines(old_line, new_line, out);
+}
+
+
 static rnd_r_dir_t line_callback(const rnd_rnd_box_t * b, void *cl)
 {
 	int res;
Index: trunk/src/obj_line.h
===================================================================
--- trunk/src/obj_line.h	(revision 31741)
+++ trunk/src/obj_line.h	(revision 31742)
@@ -116,7 +116,16 @@
    start and the new end. */
 double pcb_drc_lines(pcb_board_t *pcb, const rnd_point_t *start, rnd_point_t *end, rnd_point_t *mid_out, rnd_bool way, rnd_bool optimize);
 
+/*** decide if two liens are overlapping in a way they can be simplified ***/
+typedef enum {
+	PCB_LINMER_NONE  = 0, /* no merge is possible */
+	PCB_LINMER_REMPT = 1, /* remove both endpoints passed back in out */
+	PCB_LINMER_SKIP  = 2  /* do not create the new line at all */
+} pcb_line_merge_t;
 
+int pcb_line_can_merge_lines(const pcb_line_t *old_line, const pcb_line_t *new_line, pcb_line_t *out);
+
+
 /* Rather than mode the line bounding box, we set it so the point bounding
  * boxes are updated too.
  */