I'm offline (on a train ride) currently,
and cannot try too many things (as I must complete a student exercise task
sheet ASAP),
but I just found that

when going backwards in  *R*  to re-evaluate {possibly after editing} some
previous R function call,
then my usual favorite commands no longer work.

My gut feeling say that this somewhat related to the other problem of  C-c
C-p not working anymore (in *R*):

C-c [Enter]   ==  C-c <return>  == comint-copy-old-input   no longer works
in *R*
and the same is true for the even simpler

<return>  == inferior-ess-send-input

Both (when entered  "somewhere up"  in *R*)  now simply give the error

"no command at this point".

This is *very* bad ...

sorry to say..
Martin

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