document.rb in prawn-0.13.1

- old
+ new

@@ -368,11 +368,11 @@
       render_body(output)
       render_xref(output)
       render_trailer(output)
       if output.instance_of?(StringIO)
         str = output.string
-        str.force_encoding("ASCII-8BIT") if str.respond_to?(:force_encoding)
+        str.force_encoding(::Encoding::ASCII_8BIT)
         return str
       else
         return nil
       end
     end
@@ -380,11 +380,10 @@
     # Renders the PDF document to file.
     #
     #   pdf.render_file "foo.pdf"
     #
     def render_file(filename)
-      Kernel.const_defined?("Encoding") ? mode = "wb:ASCII-8BIT" : mode = "wb"
-      File.open(filename,mode) { |f| render(f) }
+      File.open(filename, "wb") { |f| render(f) }
     end
 
     # The bounds method returns the current bounding box you are currently in,
     # which is by default the box represented by the margin box on the
     # document itself.  When called from within a created <tt>bounding_box</tt>