Notation at level 200 can't be parsed (?)

[ana-borges]

Description of the problem

Inductive t : Set := C : t -> t -> t.
Reserved Notation "a $ b" (at level 200, right associativity).
Infix "$" := C.
Variables (a b : t).
Check (a $ b).
(* Error: Syntax error: ',' or ')' expected after [term level 200] (in [term]). *)

Other levels don't seem to have this problem.

Coq Version

master

cc. @Alizter

[ana-borges]

@herbelin: "A notation at level 200 that starts with a variable should be forbidden."