Logtalk \b([A-Z_][A-Za-z0-9_]*) \b(complements)\( \b(extends)\( \b(i(?:mp(?:orts|lements)|nstantiates))\( \b(specializes)\( (::) (\^\^) (:) (\{) (\}) \b(ca(?:ll|tch))\( \b(throw)\( \b(true)[^[(A-Za-z_]] \b(fail)[^[(A-Za-z_]] \b(false)[^[(A-Za-z_]] \s(-->)\s \s(->)\s (!) (;) \b(instantiation_error)[^[(A-Za-z_]] \b(uninstantiation_error)\( \b(type_error)\( \b(domain_error)\( \b(consistency_error)\( \b(existence_error)\( \b(permission_error)\( \b(representation_error)\( \b(evaluation_error)\( \b(resource_error)\( \b(syntax_error)\( \b(system_error)[^[(A-Za-z_]] \b(context)\( \b(parameter)\( \b(se(?:lf|nder))\( \b(this)\( \b(current_predicate)\( \b(predicate_property)\( \b(a(?:bolish|ssert(?:a|z)))\( \b(clause)\( \b(retract(?:all)?)\( \b((?:bag|set)of)\( \b(f(?:ind|or)all)\( \b(before)\( \b(after)\( \b(forward)\( \b(expand_(?:goal|term))\( \b((?:goal|term)_expansion)\( \b(phrase)\( \b(current_(?:object|protocol|category|event))\( \b(create_(?:object|protocol|category))\( \b((?:object|protocol|category)_property)\( \b(abolish_(?:object|protocol|category|events))\( \b(co(?:mplements_object|nforms_to_protocol))\( \b(extends_(?:object|protocol|category))\( \b(imp(?:lements_protocol|orts_category))\( \b((?:instantiat|specializ)es_class)\( \b(define_events)\( \b((?:set|create|current)_logtalk_flag)\( \b(logtalk_(?:compile|l(?:ibrary_path|oad|oad_context)|make(?:_target_action)?))\( \b(logtalk_make)\b \b(forall)\( \b(threaded(?:_(?:ca(?:ll|ncel)|once|ignore|exit|peek|wait|notify))?)\( \b(threaded_engine(?:_(?:create|destroy|self|next|next_reified|yield|post|fetch))?)\( \s(=)\s \s(\\=)\s \b(subsumes_term)\( \b(unify_with_occurs_check)\( \b(atom(?:ic)?)\( \b(integer)\( \b(float)\( \b(c(?:allable|ompound))\( \b((?:non)?var)\( \b(number)\( \b(ground)\( \b(acyclic_term)\( \b(compare)\( (==) (\\==) (@<) (@=<) (@>=) (@>) \b(functor)\( \b(arg)\( (=\.\.) \b(copy_term)\( \b(numbervars)\( \b(term_variables)\( \s(as)\s \s(is)\s (=:=) (=\\=) (<) (=<) (>) (>=) (\+) (?<!:)(-) (\*) (//) (/) \b(e)\b \b(pi)\b \b(rem)\b \b(mod)\b \b(div)\b \b(rem)\( \b(div)\( \b(m(?:ax|in|od))\( \b(abs)\( \b(sign)\( \b(float(?:_(?:integer|fractional)_part)?)\( \b(floor)\( \b(t(?:an|runcate))\( \b(round)\( \b(ceiling)\( (\*\*) \b(sin)\( \b(cos)\( \b(a(?:cos|sin|tan|tan2))\( \b(exp)\( \b(log)\( \b(sqrt)\( (>>) (<<) (/\\) (\\/) (\\) \b(xor)\( \b((?:curren|se)t_(?:in|out)put)\( \b(open)\( \b(close)\( \b(flush_output)\( \b(stream_property)\( \b(at_end_of_stream)\( \b(set_stream_position)\( \b(flush_output)[^[(A-Za-z_]] \b(at_end_of_stream)[^[(A-Za-z_]] \b((?:get|p(?:eek|ut))_c(?:har|ode))\( \b(nl)\( \b(nl)\b \b((?:get|peek|put)_byte)\( \b(read(?:_term)?)\( \b(write(?:q)?)\( \b(write_(?:canonical|term))\( \b((?:current_)?op)\( \b((?:current_)?char_conversion)\( (\\\+) \b(ignore)\( \b(once)\( \b(repeat)[^[(A-Za-z_]] \b(atom_(?:length|c(?:hars|o(?:ncat|des))))\( \b(sub_atom)\( \b(char_code)\( \b(number_c(?:har|ode)s)\( \b((?:se|curren)t_prolog_flag)\( \b(halt)\( \b(halt)[^[(A-Za-z_]] \b((?:key)?sort)\( (@) (\?) (\+) (-) (\^) (?<=[^\w\d]|^)(0b[0-1]+) (?<=[^\w\d]|^)(0o[0-7]+) (?<=[^\w\d]|^)(0x\h+) (?<=[^\w\d]|^)(0'[\\]?.) (?<=[^\w\d]|^)([+-]?\d+(?:\.\d+)?(?:[eE](?:[+-])?\d+)?) (::) (\*) :-\s(object)\( :-\s(protocol)\( :-\s(category)\( :-\s(end_(?:object|protocol|category))\. :-\s(alias)\( :-\s(e(?:n(?:coding|sure_loaded)|xport))\( :-\s(in(?:clude|itialization|fo))\( :-\s(mod(?:e|e_non_terminal|ule))\( :-\s(built_in)\. :-\s(dynamic)\( :-\s(dynamic)\. :-\s((?:el)?if)\( :-\s(e(?:lse|ndif))\. :-\s(discontiguous)\( :-\s(p(?:ublic|r(?:otected|ivate)))\( :-\s(m(?:eta_(?:non_terminal|predicate)|ultifile))\( :-\s(op)\( :-\s(c(?:alls|oinductive))\( :-\s(use(?:s|_module))\( :-\s(reexport)\( :-\s(s(?:et_(?:logtalk|prolog)_flag|ynchronized))\( :-\s(synchronized)\. :-\s(threaded)\. (:-) (?<!0'|0'\\)" (?<!\\)(\\\\)*" (\\[\\abfnrtv"']) (\\(?:x[a-fA-F0-9]+|[0-7]+)\\) (?<!0|0'|0'\\)' (?<!\\)(\\\\)*' (\\[\\abfnrtv"']) (\\(?:x[a-fA-F0-9]+|[0-7]+)\\) /\*\*/ \*/ (?<!0'|0'\\)% [\n\r] :-\sif\(:-\sendif\. :-\sendif\. :-\s(?:object|protocol|category)\(:-\send_(?:object|protocol|category)\. :-\send_(?:object|protocol|category)\.