(* search arguments on which Apply tactic doesn't fail *)
let matchConclusion mqi_handle ?(output_html = (fun _ -> ())) ~choose_must () ~status =
let ((_, metasenv, _, _), metano) = status in
- let (_, ey ,ty) = List.find (function (m,_,_) -> m=metano) metasenv in
+ let (_, ey ,ty) = CicUtil.lookup_meta metano metasenv in
let list_of_must, only = CGMatchConclusion.get_constraints metasenv ey ty in
let must = choose_must list_of_must only in
let result =