fix and simplyfy Widget::Table#render_with_options

lib/report/walker.rb

@@ -17,10 +17,12 @@ class Report::Walker
   end
 
   def for_empty_cell(&block)
+    puts __method__ unless block_given?
     access_block(:empty_cell, &block) || access_block(:cell)
   end
 
   def access_block(name, &block)
+    puts method.center(80, '= '), caller[0..1] unless block_given?
     @blocks ||= {}
     @blocks[name] = block if block
     @blocks[name]

lib/widget/table.rb

@@ -14,12 +14,8 @@ class Widget::Table < Widget::Base
   end
 
   def render_with_options(options = {}, &block)
-    self.debug = options[:debug] || false
-    if canvas = options[:to]
-      canvas << "\n" << render(&block)
-    else
-      render(&block)
-    end
+    canvas = options[:to] ? options[:to] << "\n" : ""
+    canvas << render(&block)
   end
 
   def table_widget