type t
[
|
`exists_header of string * Re2.Regex.t
`all_headers of string * Re2.Regex.t
]
include sig ... end
val sexp_of_t : t ‑> Sexplib.Sexp.t
val matches : t ‑> Email_message.Email.t ‑> bool
val matches' : t ‑> Email_message__.Headers.t ‑> bool
val examples : t list