Manually break figured bass extenders for only some numbers
Figured bass often uses extenders to indicate continuation of the
corresponding step. However, in this case lilypond is in greedy-mode
and uses extenders whenever possible. To break individual extenders,
one can simply use a modifier \! to a number, which breaks any
extender attributed to that number right before the number.
bassfigures = \figuremode { \set useBassFigureExtenders = ##t <6 4>4 <6 4\!> <6 4\!> <6 4\!> | <6\! 4\!> <6 4> <6 4\!> <6 4> } << \new Staff \relative c'' { c1 c1 } \new FiguredBass \bassfigures >>