rem: flavourSet.appendFlavour("text/nsmessageOrfolder"); 
add: flavourSet.appendFlavour("text/x-moz-message-or-folder"); 
context:   getSupportedFlavours: function ()    {      var flavourSet = new FlavourSet();      flavourSet.appendFlavour("text/x-moz-url");      flavourSet.appendFlavour("text/nsmessageOrfolder");      flavourSet.appendFlavour("application/x-moz-file", "nsIFile");      return flavourSet;    }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/404e12e0541a3ffd54ae714e9a3401c380718f10/MsgComposeCommands.js/clean/mailnews/compose/resources/content/MsgComposeCommands.js