--- old-sup/lib/sup/message-chunks.rb	2007-12-01 13:30:40.000000000 +0100
+++ new-sup/lib/sup/message-chunks.rb	2007-12-01 13:30:40.000000000 +0100
@@ -65,6 +65,7 @@
       @lines =
         case @content_type
         when /^text\/plain\b/
+          @quotable = true
           Message.convert_from(@raw_content, encoded_content.charset).split("\n")
         else
           text = HookManager.run "mime-decode", :content_type => content_type,