[
! <- punctuation.delimiter
	! Unify apostrophe styles
  [ ?* [ ' (->) [ %` | ʻ | ’ | ‘ | ʼ ] ] ?* ]
! ^ punctuation.delimiter
!   ^ constant.builtin
!    ^ operator
!          ^ operator
!                    ^ operator

  .o.
! ^ operator
  ! Example rule: Accept input without diacritics
  [ ?* [ á (->) a ] ?* ]
! ^ punctuation.delimiter
]
! <- punctuation.delimiter