vc (using RCS) seems seriously damaged.

[Uwe Brauer]

Hello 

I have some news with the problem I enountered.

    -  I checked all my files under version control, even ones I have
       to touch for years. All the time the same
       co -pn foo.txt (n>1) revision n absent.

    -  I did the same testing as described in an earlier mail with GNU
       emacs, and obtain the same result.


I will now look for an older PC with an older version of RCS in order
to see what is the problem. I suspect something changed in the RCS
syntax. Using  version 5.7-18.


Uwe Brauer