Index: line_of_vias.c
===================================================================
--- line_of_vias.c	(revision 28716)
+++ line_of_vias.c	(revision 28717)
@@ -28,6 +28,7 @@
 
 typedef struct {
 	pcb_coord_t pitch;
+	pcb_coord_t clearance;
 } line_of_vias;
 
 static void line_of_vias_unpack(pcb_subc_t *obj)
@@ -47,8 +48,64 @@
 		v = pcb_get_value(s, NULL, NULL, &succ);
 		if (succ) lov->pitch = v;
 	}
+
+	s = pcb_attribute_get(&obj->Attributes, "extobj::clearance");
+	if (s != NULL) {
+		v = pcb_get_value(s, NULL, NULL, &succ);
+		if (succ) lov->clearance = v;
+	}
 }
 
+/* remove all existing padstacks from the subc */
+static void line_of_vias_clear(pcb_subc_t *subc)
+{
+	pcb_pstk_t *ps;
+	for(ps = padstacklist_first(&subc->data->padstack); ps != NULL; ps = padstacklist_first(&subc->data->padstack)) {
+		pcb_poly_restore_to_poly(ps->parent.data, PCB_OBJ_PSTK, NULL, ps);
+		pcb_pstk_free(ps);
+	}
+}
+
+/* create all new padstacks */
+static int line_of_vias_gen(pcb_subc_t *subc, pcb_any_obj_t *edit_obj)
+{
+	double offs, len, dx, dy, x, y, pitch;
+	line_of_vias *lov;
+	pcb_line_t *line = (pcb_line_t *)edit_obj;
+	pcb_data_t *data = subc->parent.data;
+
+	if (edit_obj->type != PCB_OBJ_LINE)
+		return -1;
+
+	if (subc->extobj_data == NULL)
+		line_of_vias_unpack(subc);
+	lov = subc->extobj_data;
+
+	if (data->subc_tree != NULL)
+		pcb_r_delete_entry(data->subc_tree, (pcb_box_t *)subc);
+	pcb_undo_freeze_add();
+
+	len = pcb_distance(line->Point1.X, line->Point1.Y, line->Point2.X, line->Point2.Y);
+	dx = (double)(line->Point2.X - line->Point1.X) / len;
+	dy = (double)(line->Point2.Y - line->Point1.Y) / len;
+	x = line->Point1.X;
+	y = line->Point1.Y;
+	pitch = lov->pitch;
+	for(offs = 0; offs <= len; offs += pitch) {
+		pcb_pstk_new(subc->data, -1, 0, pcb_round(x), pcb_round(y), lov->clearance, pcb_flag_make(PCB_FLAG_CLEARLINE));
+		x += dx * pitch;
+		y += dy * pitch;
+	}
+
+	pcb_undo_unfreeze_add();
+	pcb_subc_bbox(subc);
+	if ((data != NULL) && (data->subc_tree != NULL))
+		pcb_r_insert_entry(data->subc_tree, (pcb_box_t *)subc);
+
+	return 0;
+}
+
+
 pcb_any_obj_t *pcb_line_of_vias_get_edit_obj(pcb_subc_t *obj)
 {
 	pcb_any_obj_t *edit = pcb_extobj_get_editobj_by_attr(obj);
@@ -60,8 +117,24 @@
 }
 
 
+
+static void pcb_line_of_vias_edit_pre(pcb_subc_t *subc, pcb_any_obj_t *edit_obj)
+{
+	pcb_trace("LoV: edit pre %ld %ld\n", subc->ID, edit_obj->ID);
+	line_of_vias_clear(subc);
+}
+
+static void pcb_line_of_vias_edit_geo(pcb_subc_t *subc, pcb_any_obj_t *edit_obj)
+{
+	pcb_trace("LoV: edit geo %ld %ld\n", subc->ID, edit_obj->ID);
+	line_of_vias_gen(subc, edit_obj);
+}
+
+
 static pcb_extobj_t pcb_line_of_vias = {
 	"line-of-vias",
 	NULL,
-	pcb_line_of_vias_get_edit_obj
+	pcb_line_of_vias_get_edit_obj,
+	pcb_line_of_vias_edit_pre,
+	pcb_line_of_vias_edit_geo
 };