leave a gap. Chord tremolo beams on half notes are not ambiguous,
as half notes cannot appear in a regular beam, and should reach the
stems.
+
+(To ensure that the spacing engine is not confused we add some regular notes as well.)
"
}
\repeat "tremolo" 4 { f'8 e }
\repeat "tremolo" 2 { f e }
\repeat "tremolo" 1 { f e }
+ c4 c4 c4 c4
+ c4 c4 c4 c4
+ c4 c4 c4 c4
+
}
\paper {
linewidth = 90*\staffspace