Hi, With GNU Prolog 1.4.1, portray_clause/2 ignores its second argument and prints the its first argument (supposed to be a stream) as portray_clause/1 would do.
The culprit seems to be the line 57 of src/BipsPl/pretty.pl which calls
'$call_c'('Pl_Portray_Clause_2'(SorA, Term, AboveB)),
instead of
'$call_c'('Pl_Portray_Clause_3'(SorA, Term, AboveB)),
This bug was not present in GNU Prolog 1.4.0.
Best regards,
--
Thierry.
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