lib/sup/label.rb in sup-0.8.1 vs lib/sup/label.rb in sup-0.9

@@ -20,12 +20,10 @@
       end
     @labels = {}
     @new_labels = {}
     @modified = false
     labels.each { |t| @labels[t] = true }
-
-    self.class.i_am_the_instance self
   end
 
   def new_label? l; @new_labels.include?(l) end
 
   ## all labels user-defined and system, ordered
@@ -59,12 +57,12 @@
       l2
     else
       l
     end
   end
-  
+
   def << t
-    t = t.intern unless t.is_a? Symbol
+    raise ArgumentError, "expecting a symbol" unless t.is_a? Symbol
     unless @labels.member?(t) || RESERVED_LABELS.member?(t)
       @labels[t] = true
       @new_labels[t] = true
       @modified = true
     end