@symbolics Not this trope again ... Rainer Joswig really loves to discredit the work of MIT hackers in anyway possible.
GNU Emacs was not a "rewrite of Gosling Emacs".
EMACS was started by RMS, not GLS -- we even have a date of that, and the original email (11/16/76 22:05:41).
EMACS was and is based on the work of many people.