Enumerable#entries to support multiple values; close #1868

mrblib/array.rb

@@ -97,6 +97,18 @@ class Array
       ret
     end
   end
+
+  # internal method to convert multi-value to single value
+  def __to_svalue
+    case self.size
+    when 0
+      return nil
+    when 1
+      self[0]
+    else
+      self
+    end
+  end
 end
 
 ##

mrblib/enum.rb

@@ -129,8 +129,9 @@ module Enumerable
   # ISO 15.3.2.2.6
   def entries
     ary = []
-    self.each{|val|
-      ary.push val
+    self.each{|*val|
+      # __to_svalue is an internal method
+      ary.push val.__to_svalue
     }
     ary
   end