mistake in sort -k argument processing?

[Evan Hunt]

Observation:

    $ sort -k1.0,2
    sort: character offset is zero: invalid field specification `1.0,2'

Now, this seems unnecessary to me; it *could* silently ignore the ".0" and
treat it as if you hadn't specified a character offset.  (SCO does that.)
But, regardless, if that *is* going to be an error, then shouldn't this:

    $ sort -k1,2.0

...be an error as well?  It isn't.

Evan Hunt