rem: return client.ucConverter.ConvertToUnicode(msg); 
add: try { return client.ucConverter.ConvertToUnicode(msg); } catch (ex) { dd ("caught exception " + ex + " converting " + msg + " to charset " + client.CHARSET); }  return msg; 
context: function toUnicode (msg){    if (!("ucConverter" in client))        return msg;        /* XXX set charset again to force the encoder to reset, see bug 114923 */    client.ucConverter.charset = client.CHARSET;    return client.ucConverter.ConvertToUnicode(msg);}
meta: 1567	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1567/47bba97c27220c66bb2cf09703c8bdf8c118b24d/static.js/buggy/xul/content/static.js