package brr

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Prompt history data structure.

type t

The type for prompt histories.

val v : prev:Jstr.t list -> t

v ~prev initializes the toplevel with previous entries prev (later elements are older).

val empty : t

empty is an empty history.

val entries : t -> Jstr.t list

entries h are all the entries in the history.

val add : t -> Jstr.t -> t

add h e makes adds entry v to history.

val restart : t -> t

restart

val prev : t -> Jstr.t -> (t * Jstr.t) option

prev h current makes current the next entry of the resulting history and returns the previous entry of h (if any).

val next : t -> Jstr.t -> (t * Jstr.t) option

next h current makes current the previous entry of the resulting history and returns the next entry of h (if any).

val to_string : sep:Jstr.t -> t -> Jstr.t

to_string ~sep t is a string with the entries of t separated by lines that contain sep.

val of_string : sep:Jstr.t -> Jstr.t -> t

of_string ~sep s is history from s assumed to be entries seperated by lines that contain sep.

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