Keep in a pick only what reads of its name address, look frames up on the stack alone, and refuse a name read once whole

inline.go

@@ -181,10 +181,15 @@ func linkNodeRefs(scope nodeScope, root map[string]node) error {
 	}); err != nil {
 		return err
 	}
-	return scope(func(path string, m node) error {
-		if t, ok := m.(*template); ok {
-			return linkNames(path, t)
+	for _, pass := range []func(string, *template) error{linkNames, checkNameReads} {
+		if err := scope(func(path string, m node) error {
+			if t, ok := m.(*template); ok {
+				return pass(path, t)
+			}
+			return nil
+		}); err != nil {
+			return err
 		}
-		return nil
-	})
+	}
+	return nil
 }