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(* Check that "where" clause behaves as if given independently of the *)
(* definition (variant of bug #1132 submitted by Assia Mahboubi) *)
Fixpoint plus1 (n m:nat) {struct n} : nat :=
match n with
| O => m
| S p => S (p+m)
end
where "n + m" := (plus1 n m) : nat_scope.
(* Check behaviour wrt yet empty levels (see Stephane's bug #1850) *)
Parameter P : Type -> Type -> Type -> Type.
Notation "e |= t --> v" := (P e t v) (at level 100, t at level 54).
Check (nat |= nat --> nat).
(* Check that first non empty definition at an empty level can be of any
associativity *)
Definition marker := O.
Notation "x +1" := (S x) (at level 8, left associativity).
Reset marker.
Notation "x +1" := (S x) (at level 8, right associativity).
(* Check that empty levels (here 8 and 2 in pattern) are added in the
right order *)
Notation "' 'C_' G ( A )" := (A,G) (at level 8, G at level 2).
(* Check import of notations from within a section *)
Notation "+1 x" := (S x) (at level 25, x at level 9).
Section A. Global Notation "'Z'" := O (at level 9). End A.
(* Check use of "$" (see bug #1961) *)
Notation "$ x" := (id x) (at level 30).
Check ($ 5).
(* Check regression of bug #2087 *)
Notation "'exists' x , P" := (x, P)
(at level 200, x ident, right associativity, only parsing).
Definition foo P := let '(exists x, Q) := P in x = Q :> nat.
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