calc: putting the top of the stack in the kill ring

[Rainer Thiel]

I am sorry if I am missing something very basic here, but I cannot seem
to find a way to put the result on top of the stack in the kill ring.  I
am aware of the `Kill and Yank' section of the calc manual, but the
problem is that M-w (calc-copy-region-as-kill) always copies the whole
line.

So when I say

   2
   3+

I get

   5

but what is copied to the kill-ring with M-w is `1:  5'.

Is there any easy way of copying only the number on stack (`5', in this
case) into the kill-ring?

Many thanks in advance

Rainer
-- 
Prof. Dr. Rainer Thiel
Institut für Altertumswissenschaften
07737 Jena, Germany (EU)
r.thiel@uni-jena.de