sorry, i did know the source of that bug but hadn't fixed it.

removal of a goto considered harmful:
the original code at label NameError: used len = prefix+e.off[npath]
but the replacement nameerror() uses len = strlen(name), and indeed i don't think
Elemlist.off is used at all now.  nameerror() probably
needs an extra parameter or two to give it the right len
(and suitable changes to the code).