Allowing fingerings to be printed inside the staff
By default, vertically oriented fingerings are positioned outside the
staff; that behavior, however, may be disabled. Attention needs to be
paid to situations where fingerings and stems are in the same
direction: by default, fingerings will avoid only beamed stems. That
setting can be changed to avoid no stems or all stems; the following
example demonstrates these two options, as well as how to go back to
the default behavior.
\relative c' {
<c-1 e-2 g-3 b-5>2
\override Fingering.staff-padding = #'()
<c-1 e-2 g-3 b-5>4 g'-0
a8[-1 b]-2 g-0 r
\override Fingering.add-stem-support = ##f
a[-1 b]-2 g-0 r
\override Fingering.add-stem-support = ##t
a[-1 b]-2 g-0 r
\override Fingering.add-stem-support = #only-if-beamed
a[-1 b]-2 g-0 r
}