lib/asciidoctor/block.rb in asciidoctor-1.5.6.2 vs lib/asciidoctor/block.rb in asciidoctor-1.5.7

@@ -122,18 +122,18 @@
         result.shift while (first = result[0]) && first.rstrip.empty?
         result.pop while (last = result[-1]) && last.rstrip.empty?
         result * LF
       end
     else
-      warn %(Unknown content model '#{@content_model}' for block: #{to_s}) unless @content_model == :empty
+      logger.warn %(Unknown content model '#{@content_model}' for block: #{to_s}) unless @content_model == :empty
       nil
     end
   end
 
   # Public: Returns the preprocessed source of this block
   #
-  # Returns the a String containing the lines joined together or nil if there
-  # are no lines
+  # Returns the a String containing the lines joined together or empty string
+  # if there are no lines
   def source
     @lines * LF
   end
 
   def to_s