/usr/share/source-highlight/logtalk.lang is in libsource-highlight-common 3.1.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | # highlighting for Logtalk source files (http://logtalk.org/)
#
# written by Paulo Moura (pmoura@logtalk.org)
# last revised on January 18, 2011
comment start "%"
comment delim "/*" "*/" multiline nested
string delim "\"" "\"" escape "\\"
environment string delim "'" "'" begin
specialchar = '\\([\\abfnrtv"\']|(x[a-fA-F0-9]+|[0-7]+)\\)'
end
keyword = '\<(abolish|c(urrent|reate))_(object|protocol|category)(?=\()',
'\<(object|protocol|category)_property(?=\()',
'\<co(mplements_object|nforms_to_protocol)(?=\()',
'\<extends_(object|protocol|category)(?=\()',
'\<imp(lements_protocol|orts_category)(?=\()',
'\<(instantiat|specializ)es_class(?=\()',
'\<(current_event|(abolish|define)_events)(?=\()',
'\<(current|set)_logtalk_flag(?=\()',
'\<logtalk_(compile|l(oad|oad_context|ibrary_path))(?=\()'
keyword = '\<(after|before)(?=\()',
'\<(parameter|this|se(lf|nder))(?=\()',
'\<(current_predicate|predicate_property)(?=\()',
'\<(expand_(goal|term)|(goal|term)_expansion|phrase)(?=\()',
'\<(clause|retract(all)?)(?=\()',
'\<a(bolish|ssert(a|z))(?=\()',
'\<(ca(ll|tch)|throw)(?=\()',
'\<((bag|set)of|f(ind|or)all)(?=\()',
'\<threaded(_(call|once|ignore|exit|peek|wait|notify))?(?=\()',
'\<unify_with_occurs_check(?=\()',
'\<(functor|arg|copy_term|numbervars)(?=\()',
'\<(rem|mod|abs|sign)(?=\()',
'\<(float_(integer|fractional)_part|float)(?=\()',
'\<(floor|truncate|round|ceiling)(?=\()',
'\<(cos|atan|exp|log|s(in|qrt))(?=\()',
'\<(var|atom(ic)?|integer|float|c(allable|ompound)|n(onvar|umber)|ground)(?=\()',
'\<compare(?=\()',
'\<(curren|se)t_(in|out)put(?=\()',
'\<(open|close)(?=\()',
'\<flush_output(?=\()',
'\<(flush_output|at_end_of_stream)\>',
'\<(stream_property|at_end_of_stream|set_stream_position)(?=\()',
'\<(get|p(eek|ut))_(byte|c(har|ode))(?=\()',
'\<nl(?=\()', '\<(nl)\>',
'\<(read(_term)?)(?=\()',
'\<(write(q|_(canonical|term))?)(?=\()',
'\<(op|current_op)(?=\()',
'\<((current_)?char_conversion)(?=\()',
'\<atom_(length|c(hars|o(ncat|des)))(?=\()',
'\<(char_code|sub_atom)(?=\()',
'\<number_(c(har|ode)s)(?=\()',
'\<(set|current)_prolog_flag(?=\()',
'\<halt(?=\()', '\<(halt)\>',
'\<(ignore|once)(?=\()',
'\<((key)?sort)(?=\()',
'\<(true|fail|repeat)\>',
'\<(e|pi|is|rem|mod)\>'
variable = '\<[A-Z_][A-Za-z0-9_]*'
cbracket = "{|}"
preproc = '^[[:blank:]]*:-[[:blank:]](c(a(lls|tegory)|oinductive)|p(ublic|r(ot(ocol|ected)|ivate))|e(l(if|se)|n(coding|sure_loaded)|xport)|i(f|n(fo|itialization))|alias|d(ynamic|iscontiguous)|m(eta_predicate|od(e|ule)|ultifile)|reexport|s(et_(logtalk|prolog)_flag|ynchronized)|o(bject|p)|use(s|_module))(?=\()',
'^[[:blank:]]*:-[[:blank:]](e(lse|nd(if|_(category|object|protocol)))|dynamic|synchronized|threaded)\.'
preproc = '\<(complements|extends|i(nstantiates|mp(lements|orts))|specializes)(?=\()'
normal = '\<[a-z][A-Za-z0-9_]*'
number = '0\'.|0b[0-1]+|0o[0-7]+|0x[0-9a-fA-F]+|[0-9]+(\.[0-9]+)?([eE]([-+])?[0-9]+)?'
symbol = "^",
"::", "^^", ":",
">>", "<<", "/\\", "\\/", "\\",
"=:=", "=\\=", "<", "=<", ">", ">=",
"=..",
"\\==", "==", "@=<", "@<", "@>=", "@>",
"=", "\\=",
"+", "-", "**", "*", "//", "/",
"-->",
"!", "->", ";", "\\+",
"?", "@",
":-"
|