tietools.label_tie_chains_in_expr_with_written_tie_chain_duration

abjad.tools.tietools.label_tie_chains_in_expr_with_written_tie_chain_duration.label_tie_chains_in_expr_with_written_tie_chain_duration(expr, markup_direction='down')

Label tie chains in expr with written tie chain duration.:

abjad> staff = Staff(notetools.make_repeated_notes(4))
abjad> tuplettools.FixedDurationTuplet(Duration(2, 8), staff[:3])
FixedDurationTuplet(1/4, [c'8, c'8, c'8])
abjad> tietools.TieSpanner(staff.leaves[:2])
TieSpanner(c'8, c'8)
abjad> tietools.TieSpanner(staff.leaves[2:])
TieSpanner(c'8, c'8)
abjad> tietools.label_tie_chains_in_expr_with_written_tie_chain_duration(staff)
abjad> f(staff)
\new Staff {
    \times 2/3 {
        c'8 _ \markup { \small 1/4 } ~
        c'8
        c'8 _ \markup { \small 1/4 } ~
    }
    c'8
}

Return none.