and term_parsing_warning = | Var_and_const of string
* string
* (Stdlib.Lexing.position * Stdlib.Lexing.position)
and config_warning = | Missing_key of string * string list * string| Missing_name of string * string list * string * string| Missing_engine of string * string list * string * string| Default_engines| Default_colors| Bad_group of string * string list * string * Yojson.Basic.t * string * string| Json_error of string
val issue_warning : warning -> unit