\override Beam #'damping = #100000 fails to properly flatten beams

[Marcus Macauley]

According to the documentation --

http://lilypond.org/doc/v2.9/Documentation/user/lilypond-internals/Beam.html
http://lilypond.org/doc/v2.9/Documentation/user/lilypond-internals/beam_002dinterface.html

-- the following setting should produce "horizontal beams":

\override Beam #'damping = #100000

In fact, it doesn't make the beams quite horizontal (one end remains  
consistently 1/4 space higher than the other end).

For example:

\version "2.9.23"
\relative c' {
        c'8[ c,] c[ b'] a[ c,] c[ g']
        f[ c] c[ e] d[ c] f16[ e d c]
        \break
        % The following beams should be horizontal
        \override Beam #'damping = #100000
        c'8[ c,]_"Beam damping = 100 000"
                 c[ b'] a[ c,] c[ g']
        f[ c] c[ e] d[ c] f16[ e d c]
}
\layout { ragged-right = ##t indent = #0 }


Marcus