True when expr is a tie chain with all leaves in same parent.
That is, True when tie chain crosses no container boundaries, otherwise False.
Example:
abjad> t = Staff(Measure((2, 8), notetools.make_repeated_notes(2)) * 2)
abjad> tietools.TieSpanner(t.leaves[1:3])
TieSpanner(c'8, c'8)
\new Staff {
\time 2/8
c'8
c'8 ~
\time 2/8
c'8
c'8
}
abjad> tie_chain = tietools.get_tie_chain(t.leaves[0])
abjad> assert tietools.is_tie_chain_with_all_leaves_in_same_parent(tie_chain)
abjad> tie_chain = tietools.get_tie_chain(t.leaves[1])
abjad> assert not tietools.is_tie_chain_with_all_leaves_in_same_parent(tie_chain)
abjad> tie_chain = tietools.get_tie_chain(t.leaves[2])
abjad> assert not tietools.is_tie_chain_with_all_leaves_in_same_parent(tie_chain)
abjad> tie_chain = tietools.get_tie_chain(t.leaves[3])
abjad> assert tietools.is_tie_chain_with_all_leaves_in_same_parent(tie_chain)
Changed in version 2.0: renamed tietools.is_in_same_parent() to tietools.is_tie_chain_with_all_leaves_in_same_parent().