Another tremolo collision bug...

[Valentin Villenave]

%{
Greetings,

The following bug might be related to #376 or #318 (which is really
annoying btw); however I think this example is much uglier than what
is already mentioned.

In the following snippet, the grace note forces the tremolo beam to be
printed above the chord (can't figure why), regardless of what's
already there.
%}

{
<< {  b'4 f'2. }
    \\ {
              % if you remove the grace note,
              % the collision doesn't happen
    \grace a8
    \repeat tremolo 32 <b g'>32  } >>
}