> I then see "C-@" echoed in the minibuffer, and the resulting *Help* buffer > says
WFIW, in the DEC VT terminals (from where most of ANSI controls stem from), Ctrl-Space used to generate a NUL character (ASCII '\0'), and so maybe it is seen as a fill character by the OP's terminal and, therefore, is ignored. Anton Lavrentiev Contractor NIH/NLM/NCBI -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple