span.rb in prawn-2.2.0

- old
+ new

@@ -1,7 +1,5 @@
-# encoding: utf-8
-
 # span.rb : Implements text columns
 #
 # Copyright September 2008, Gregory Brown. All Rights Reserved.
 #
 # This is free software. Please see the LICENSE and COPYING files for details.
@@ -26,29 +24,34 @@
     #    text "Here's some centered text in a 350 point column. " * 100
     #  end
     #
     def span(width, options = {})
       Prawn.verify_options [:position], options
-      original_position = self.y
+      original_position = y
 
       # FIXME: Any way to move this upstream?
-      left_boundary = case(options[:position] || :left)
-                      when :left
-                        margin_box.absolute_left
-                      when :center
-                        margin_box.absolute_left + margin_box.width / 2.0 - width / 2.0
-                      when :right
-                        margin_box.absolute_right - width
-                      when Numeric
-                        margin_box.absolute_left + options[:position]
-                      else
-                        fail ArgumentError, "Invalid option for :position"
-                      end
+      left_boundary =
+        case options.fetch(:position, :left)
+        when :left
+          margin_box.absolute_left
+        when :center
+          margin_box.absolute_left + margin_box.width / 2.0 - width / 2.0
+        when :right
+          margin_box.absolute_right - width
+        when Numeric
+          margin_box.absolute_left + options[:position]
+        else
+          raise ArgumentError, 'Invalid option for :position'
+        end
 
       # we need to bust out of whatever nested bounding boxes we're in.
       canvas do
-        bounding_box([left_boundary,
-                      margin_box.absolute_top], :width => width) do
+        bounding_box(
+          [
+            left_boundary,
+            margin_box.absolute_top
+          ], width: width
+        ) do
           self.y = original_position
           yield
         end
       end
     end