message_tokens//2 — The Logtalk Handbook v3.47.0 documentation

# `message_tokens//2`

## Description

    message_tokens(Message, Component)

User-defined non-terminal hook used to rewrite a message term into a list of tokens and declared in the logtalk built-in object as a public, multifile, and dynamic non-terminal. The list of tokens can be printed by calling the print_message_tokens/3 method. This non-terminal hook is automatically called by the print_message/3 method.

## Modes and number of proofs

    message_tokens(+nonvar, +nonvar) - zero_or_more

## Errors

(none)

## Examples

    :- multifile(logtalk::message_tokens//2).
    :- dynamic(logtalk::message_tokens//2).

    logtalk::message_tokens(redefining_entity(Type, Entity), core) -->
        ['Redefining ~w ~q'-[Type, Entity], nl].

See also

message_hook/4, message_prefix_stream/4, print_message/3, print_message_tokens/3, print_message_token/4, ask_question/5, question_hook/6, question_prompt_stream/4