anchor.diff:                  None
               else
                   match expr with
  -                | SynExpr.Quote(_synExpr1, _, _synExpr2, _, _range) ->
  -                    None
  +                | SynExpr.Quote(synExpr1, _, synExpr2, _, _range) ->
  +                    List.tryPick walkExpr [synExpr1; synExpr2]
  +
                   | SynExpr.Const(_synConst, _range) -> 
                       None
   
  
positive.code:                     List.tryPick walkSynModuleDecl modules
                  | SynModuleDecl.Types(typeDefs, _range) ->
                      List.tryPick walkSynTypeDefn typeDefs
                  | SynModuleDecl.DoExpr _
                  | SynModuleDecl.Attributes _
                  | SynModuleDecl.HashDirective _
                  | SynModuleDecl.Open _ -> 
  
negative.code:                     walkSynTypeDefn typeDef
                  | SynMemberDefn.ValField(_field, _range) ->
                      None
                  | SynMemberDefn.LetBindings(bindings, _isStatic, _isRec, _range) ->
                      List.tryPick walkBinding bindings
                  | SynMemberDefn.Open _
                  | SynMemberDefn.ImplicitInherit _
                  | SynMemberDefn.Inherit _
  