More koma confusion: subject option

[James Harkins <jamshark70@gmail.com>]

According to [1], "#+OPTIONS: subject:nil" should suppress printing the 
#+TITLE at the top of the letter. It seems that the previous bug prevents 
the expected line "\KOMAoption{subject}{untitled}" from being generated.

Okay... so, what if I set "#+OPTIONS: subject:untitled"? Then I get 
something like:

\KOMAoption{subject}{untitled}
\setkomavar{subject}{The title}

.. and LaTeX prints "The title" in bold, above the salutation.

If I remove the #+TITLE line (or comment it out), then the exporter assumes 
that the title should be the file name, minus the .org extension. This 
conflicts with [1], which claims that the default subject is an empty 
string.

I can suppress the subject by providing an empty #+TITLE line, but the 
documentation suggests that this should not be necessary.

??

hjh

[1] http://orgmode.org/worg/exporters/koma-letter-export.html