add:  gContentChanged = true; 
context: function RemoveSelectedAttachment(){  var bucketTree = document.getElementById("attachmentBucket");  if ( bucketTree )  {    var body = document.getElementById("bucketBody");    if ( body && bucketTree.selectedItems && bucketTree.selectedItems.length )    {      for ( var item = bucketTree.selectedItems.length - 1; item >= 0; item-- )        body.removeChild(bucketTree.selectedItems[item]);    }  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/24de4f9737608c87370babe644b98e62d52f83c6/MsgComposeCommands.js/buggy/mailnews/compose/resources/content/MsgComposeCommands.js