Index: trunk/src/obj_term.c
===================================================================
--- trunk/src/obj_term.c	(revision 11779)
+++ trunk/src/obj_term.c	(revision 11780)
@@ -162,7 +162,8 @@
 
 typedef struct {
 	pcb_any_obj_t *obj;
-	char str[1];
+	pcb_flag_t Flags;
+	char str[1]; /* must be the last item, spans longer than 1 */
 } term_rename_t;
 
 #warning TODO: get rid of the two parallel type systems
@@ -174,6 +175,7 @@
 	pcb_subc_t *subc;
 	term_rename_t *r = udata;
 	int res = 0;
+	pcb_flag_t ftmp;
 
 	subc = pcb_obj_parent_subc(r->obj);
 	if (subc == NULL) {
@@ -203,6 +205,14 @@
 
 	free(old_term);
 
+	/* swap flags: redo & undo are symmetric */
+	ftmp = r->obj->Flags;
+	r->obj->Flags = r->Flags;
+	r->Flags = ftmp;
+
+	if (r->obj->type == PCB_OBJ_POLYGON)
+		pcb_poly_init_clip(r->obj->parent.layer->parent, r->obj->parent.layer, r->obj);
+
 	return res;
 }
 
@@ -248,8 +258,13 @@
 	r = pcb_undo_alloc(pcb, &undo_term_rename, sizeof(term_rename_t) + len);
 	r->obj = obj;
 	memcpy(r->str, new_name, nname_len+1);
+	r->Flags = obj->Flags;
+	PCB_FLAG_CLEAR(PCB_FLAG_CLEARPOLY, r);
 	undo_term_rename_swap(r);
 
+	if (obj->type == PCB_OBJ_POLYGON)
+		pcb_poly_init_clip(obj->parent.layer->parent, obj->parent.layer, obj);
+
 	pcb_undo_inc_serial();
 	return PCB_TERM_ERR_SUCCESS;
 }