No action with forced symbolic link if link already exists

[Till Halbach]

Grettings:

I'm running
ln (coreutils) 5.2.1.

Assume the link "link" already exists and points to "other_file". Then
"ln -sf new_file link" won't trigger any action at all. No error message  
is uttered either.
This is a regression, as it worked before (i.e., the old link was  
overwritten).
Unfortunately I cannot tell exactly where it was introduced.

HTH.

--
Till Halbach