SWI-Prolog -- cancel_halt/1

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Predicate cancel_halt/1

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Availability:built-in

Source

cancel_halt(+Reason)

If this predicate is called from a hook registered with at_halt/1, halting Prolog is cancelled and an informational message is printed that includes Reason. This is used by the development tools to cancel halting the system if the editor has unsaved data and the user decides to cancel.