rem: if(window.editorShell && (! window.editorShell.documentModified) && editorShell.editorDocument.locatoin != "about:blank") 
add: if(editorShell && (! editorShell.documentModified) && editorShell.editorDocument.location != "about:blank") 
context: function EditorSetDocumentCharacterSet(aCharset){  if(window.editorShell &&     (! window.editorShell.documentModified) &&       editorShell.editorDocument.locatoin != "about:blank")  {    dump(aCharset);    editorShell.SetDocumentCharacterSet(aCharset);    editorShell.LoadUrl(editorShell.editorDocument.location);  }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/7ebb2f90650c7a954efb829d382f75b04903c2c3/editor.js/buggy/editor/ui/composer/content/editor.js