1@c Generator: GNU source-highlight, by Lorenzo Bettini, http://www.gnu.org/software/src-highlite 2@example 3(@t{@i{usertype}},@t{@i{usertype}},@t{@i{normal}}) = 4@t{`([[:alpha:]_](?:[^[:punct:][:space:]]|[_])*)} 5@t{((?:<.*>)?)} 6@t{(\s+(?=[*&]*[[:alpha:]_][^[:punct:][:space:]]*\s*[[:punct:]\[\]]+))`} 7 8@end example