SWI-Prolog -- portray/1

portray(+Term)

A dynamic predicate, which can be defined by the user to change the behaviour of print/1 on (sub)terms. For each subterm encountered that is not a variable print/1 first calls portray/1 using the term as argument. For lists, only the list as a whole is given to portray/1. If portray/1 succeeds print/1 assumes the term has been written.

History

Extended in 8.5.1 (👉0ab89f5) term_html:portray//2 hook that plays a role similar to portray/1 for HTML rendering of terms.

portray(+Ref)

Like portray/2; prints on the terminal.

History

Extended in 8.5.1 (👉0ab89f5) term_html:portray//2 hook that plays a role similar to portray/1 for HTML rendering of terms.