The behaviour of [file copy] for soft links is not
documented. It copies the link itself and not the
file it refers to. Jeff told me that this is correct.
I expected that [file copy] would behave like 'cp'.
# touch a
# ln -s a b
% file copy b c
# ls -l a b c
.... 0 a
.... 1 b -> a
.... 1 c -> a