A hook is a variable where you can store a function or functions to be called on a particular occasion by an existing program. Emacs provides hooks for the sake of customization.
Hooks installed through Ecaml are wrapped in an exception handler that prints the error to the *Messages* buffer and exits the function normally.
(Info-goto-node "(elisp)Hooks")
include sig ... endval sexp_of_t : ('a -> Sexplib.Sexp.t) -> 'a t -> Sexplib.Sexp.tmodule Type : sig ... endval var : _ t -> Function.t list Var.tmodule Where : sig ... endmodule Function : sig ... endval add : ?buffer_local:bool -> ?where:Where.t -> 'a t -> 'a Function.t -> unit(describe-function 'add-hook) (Info-goto-node "(elisp)Setting Hooks")
val remove : 'a t -> 'a Function.t -> unit(describe-function 'remove-hook) (Info-goto-node "(elisp)Setting Hooks")
val clear : _ t -> unit(describe-variable 'after-load-functions) (Info-goto-node "(elisp)Hooks for Loading")
val after_load_once : file -> unitafter_load_once f adds f to after_load, and then removes it when it runs, so that f only runs once.
(describe-variable 'after-save-hook) (Info-goto-node "(elisp)Saving Buffers")