lib/rbbt/tsv/manipulate.rb in rbbt-util-5.34.14 vs lib/rbbt/tsv/manipulate.rb in rbbt-util-5.34.15

@@ -358,10 +358,10 @@
 
   def subset(keys)
     new = TSV.setup({}, :key_field => key_field, :fields => fields, :type => type, :filename => filename, :identifiers => identifiers)
     self.with_unnamed do
       keys.each do |k|
-        new[k] = self[k]
+        new[k] = self[k] if self.include?(k)
       end
     end
     new
   end