5 A @code{\\Voice} should be able to contain both an @code{Ambitus_engraver}
6 and a @code{Mensural_ligature_engraver} without segfaulting.
11 \consists "Ambitus_engraver"
12 \consists "Mensural_ligature_engraver"
13 \remove "Ligature_bracket_engraver"
16 \[ c'\longa c''\longa \]