--langdef=gprolog
--langmap=perl:.pm.perl
--langmap=gprolog:.pl
--regex-gprolog=/^([a-z][a-zA-Z0-9_]*)[ \t]*(\(.*\))?[ \t]*(:-|\.)/\1/p,predicate/
--regex-gprolog=/^:- ?foreign\(([a-z][a-zA-Z0-9_]*)[ \t,(]/\1/f,foreign/
--regex-gprolog=/^:- ?dynamic\(([a-z][a-zA-Z0-9_]*)\//\1/d,dynamic/