Get the last line of @output_buffer regardless of how many elements are in it

Author: eregon

app/try_ruby.rb

@@ -397,7 +397,7 @@ def show_result(retval)
     # Do not check the answer if there is no regexp matcher
     if @current_item && @current_item.answer
       # Get last line of output
-      value_to_check = @output_buffer.length > 0 && !@output_buffer.last.empty? ? @output_buffer.last.chomp : ''
+      value_to_check = @output_buffer.join.rstrip.lines.last
 
       # Check if output matches the defined answer regexp
       # and print status message