SWI-Prolog -- nodebug/1

Documentation
- Reference manual
  - The SWI-Prolog library
    - library(debug): Print debug messages and test assertions
- Packages

Availability::- use_module(library(debug)).(can be autoloaded)

[det]debug(+Topic)

[det]nodebug(+Topic)

Add/remove a topic from being printed. nodebug(_) removes all topics. Gives a warning if the topic is not defined unless it is used from a directive. The latter allows placing debug topics at the start of a (load-)file without warnings.

For debug/1, Topic can be a term Topic > Out, where Out is either a stream or stream-alias or a filename (atom). This redirects debug information on this topic to the given output.