val user : unit -> string
val email : unit -> string
val call : ?cd:string -> string -> string list -> unit
val silent : ?cd:string -> string -> string list -> unit
val silent_fail : string -> string list -> unit
val update_submodules : unit -> unit
val add : ?silent:bool -> string list -> unit
val remove : ?silent:bool -> string list -> unit
val rename : string -> string -> unit