Index: trunk/src/crosshair.h
===================================================================
--- trunk/src/crosshair.h	(revision 5284)
+++ trunk/src/crosshair.h	(revision 5285)
@@ -50,6 +50,7 @@
 	void *Ptr1,										/* three pointers to data, see */
 	 *Ptr2,												/* search.c */
 	 *Ptr3;
+	pcb_angle_t start_angle, delta_angle;
 } pcb_attached_object_t;
 
 typedef struct {
Index: trunk/src/move.c
===================================================================
--- trunk/src/move.c	(revision 5284)
+++ trunk/src/move.c	(revision 5285)
@@ -107,13 +107,13 @@
 
 	if (Type == PCB_TYPE_ARC_POINT) {
 		/* moving the endpoint of an arc is not really a move, but a change of arc properties */
-		pcb_message(PCB_MSG_ERROR, "Unsupported: moving arc endpoint\n");
+		pcb_arc_set_angles((pcb_layer_t *)Ptr1, (pcb_arc_t *)Ptr2, pcb_crosshair.AttachedObject.start_angle, pcb_crosshair.AttachedObject.delta_angle);
 	}
 	else {
 		pcb_undo_add_obj_to_move(Type, Ptr1, Ptr2, Ptr3, DX, DY);
 		ptr2 = pcb_object_operation(&MoveFunctions, &ctx, Type, Ptr1, Ptr2, Ptr3);
-		pcb_undo_inc_serial();
 	}
+	pcb_undo_inc_serial();
 
 	pcb_draw_inhibit_dec();
 	pcb_draw();
Index: trunk/src/obj_arc_ui.c
===================================================================
--- trunk/src/obj_arc_ui.c	(revision 5284)
+++ trunk/src/obj_arc_ui.c	(revision 5285)
@@ -82,6 +82,10 @@
 		delta = new_delta;
 	}
 
+	/* remember the result of the calculation so the actual move code can reuse them */
+	ch->AttachedObject.start_angle = start;
+	ch->AttachedObject.delta_angle = delta;
+
 	pcb_gui->draw_arc(ch->GC, arc->X, arc->Y, arc->Width, arc->Height, start, delta);
 	pcb_gui->draw_line(ch->GC, arc->X-mark, arc->Y, arc->X+mark, arc->Y);
 	pcb_gui->draw_line(ch->GC, arc->X, arc->Y-mark, arc->X, arc->Y+mark);