Index: trunk/src/funchash_core_list.h
===================================================================
--- trunk/src/funchash_core_list.h	(revision 31672)
+++ trunk/src/funchash_core_list.h	(revision 31673)
@@ -24,6 +24,7 @@
 action_entry(AllConnections)
 action_entry(AllRats)
 action_entry(AllUnusedPins)
+action_entry(AutoLen)
 action_entry(Block)
 action_entry(Buffer)
 action_entry(Cancel)
@@ -77,6 +78,7 @@
 action_entry(Netlist)
 action_entry(Need)
 action_entry(Next)
+action_entry(NoAutoLen)
 action_entry(Normalize)
 action_entry(Notify)
 action_entry(NoAllRats)
Index: trunk/src/netlist.h
===================================================================
--- trunk/src/netlist.h	(revision 31672)
+++ trunk/src/netlist.h	(revision 31673)
@@ -76,6 +76,7 @@
 	char *name;
 	rnd_cardinal_t export_tmp; /* filled in and used by export code; valid only until the end of exporting */
 	unsigned inhibit_rats:1;
+	unsigned auto_len:1;
 	pcb_termlist_t conns;
 };
 
Index: trunk/src/netlist_act.c
===================================================================
--- trunk/src/netlist_act.c	(revision 31672)
+++ trunk/src/netlist_act.c	(revision 31673)
@@ -165,6 +165,22 @@
 	pcb_net_crawl_flag(PCB, pcb_net_get(PCB, &PCB->netlist[PCB_NETLIST_EDITED], new_net->name, 0), 0, PCB_FLAG_SELECTED);
 }
 
+static void pcb_netlist_autolen(pcb_net_t *new_net, pcb_net_term_t *term)
+{
+	pcb_net_t *n = pcb_net_get(PCB, &PCB->netlist[PCB_NETLIST_EDITED], new_net->name, 0);
+	if (n != NULL)
+		n->auto_len = 1;
+	pcb_netlist_changed(0);
+}
+
+static void pcb_netlist_noautolen(pcb_net_t *new_net, pcb_net_term_t *term)
+{
+	pcb_net_t *n = pcb_net_get(PCB, &PCB->netlist[PCB_NETLIST_EDITED], new_net->name, 0);
+	if (n != NULL)
+		n->auto_len = 0;
+	pcb_netlist_changed(0);
+}
+
 static void pcb_netlist_rats(pcb_net_t *new_net, pcb_net_term_t *term)
 {
 	pcb_net_t *n = pcb_net_get(PCB, &PCB->netlist[PCB_NETLIST_EDITED], new_net->name, 0);
@@ -424,6 +440,8 @@
 		case F_Find: func = pcb_netlist_find; break;
 		case F_Select: func = pcb_netlist_select; break;
 		case F_Unselect: func = pcb_netlist_unselect; break;
+		case F_AutoLen: func = pcb_netlist_autolen; break;
+		case F_NoAutoLen: func = pcb_netlist_noautolen; break;
 		case F_Rats: func = pcb_netlist_rats; break;
 		case F_NoRats: func = pcb_netlist_norats; break;
 		case F_AllRats: return pcb_netlist_allrats();