autoBeam bug

[Russ Ross]

This looks like a bug to me:

\version "2.2.2"
\score {
  \notes \relative c'' { \autoBeamOn c8 b \autoBeamOff a c r2 }
  \paper { raggedright = ##t }
}

The two notes following the \autoBeamOff are beamed together with the
two notes before it.  It seems that the autoBeam properties only kick
in for groups that start after the command is issued.

The workaround is simple enough, but a fix would be even better.

Is this the kind of thing that would be simple to fix, or would it
screw up other intentional behaviors?

Thanks,

Russ