Re.View
type t =
| Beg_of_line
| End_of_line
| Beg_of_word
| End_of_word
| Not_bound
| Beg_of_str
| End_of_str
| Last_end_of_line
| Start
| Stop
val view : (Re__.Ast.cset, [ `Cased | `Uncased ]) Re__.Ast.gen -> t