Index: trunk/pcblib/parametric/common.awk
===================================================================
--- trunk/pcblib/parametric/common.awk	(revision 433)
+++ trunk/pcblib/parametric/common.awk	(revision 434)
@@ -341,3 +341,15 @@
 
 	element_arc(xhalf, y1,  arcr, arcr,  0, 180)
 }
+
+# decide whether x is true or false
+# returns 1 if true
+# returns 0 if false
+function tobool(x)
+{
+	if (x == int(x))
+		return (int(x) != 0)
+
+	x = tolower(x)
+	return (x == "true") || (x == "yes") || (x == "on")
+}
Index: trunk/pcblib/parametric/connector.awk
===================================================================
--- trunk/pcblib/parametric/connector.awk	(revision 433)
+++ trunk/pcblib/parametric/connector.awk	(revision 434)
@@ -19,9 +19,9 @@
 	P["ny"] = int(P["ny"])
 
 	eshift=tolower(P["eshift"])
-	etrunc=tolower(P["etrunc"])
-	if ((eshift != "x") && (eshift != "y") && (eshift != ""))
-		error("eshift must be x or y (got: ", eshift ")");
+	etrunc=tobool(P["etrunc"])
+	if ((eshift != "x") && (eshift != "y") && (eshift != "") && (eshift != "none"))
+		error("eshift must be x or y or none (got: ", eshift ")");
 
 	element_begin("", "CONN1", P["nx"] "*" P["ny"]    ,0,0, 0, -step)