prolog_debug:debugging/1

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Predicate debugging/1

debugging(-Topic) is nondet

debugging(?Topic, ?Bool) is nondet

Examine debug topics. The form debugging(+Topic) may be used to perform more complex debugging tasks. A typical usage skeleton is:

      (   debugging(mytopic)
      ->  <perform debugging actions>
      ;   true
      ),
      ...

The other two calls are intended to examine existing and enabled debugging tokens and are typically not used in user programs.