SWI-Prolog -- 'prolog_edit:locate'/2

Documentation
- Reference manual
  - Built-in Predicates
    - Editor Interface
      - Customizing the editor interface
        
        prolog_edit:locate/3
        
        prolog_edit:locate/2
        
        prolog_edit:edit_source/1
        
        prolog_edit:edit_command/2
        
        prolog_edit:load/0
- Packages

prolog_edit:locate(+Spec, -Location)

Same as prolog_edit:locate/3, but only deals with fully specified objects.