File: id.sml

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(* id.sml *)

(* Checks parsing of identifiers. *)

val ? = {* = op*, + = op+}
val op* = # * ?
val op+ = # + ?;

type '& = ' list
type t = int&
type ''`` = ''
type ('0,'_) == = '_`` &;

fun !x=x=x
fun ''`x:''=(x=x;x);

infix v
fun 3v? = 0
  | _v? = 1;