[*] move source files to ./src

1 files changed, 1276 insertions, 0 deletions

diff --git a/src/luaotfload-features.lua b/src/luaotfload-features.lua
new file mode 100644
index 0000000..4237d71
--- /dev/null
+++ b/src/luaotfload-features.lua
@@ -0,0 +1,1276 @@
+if not modules then modules = { } end modules ["features"] = {
+    version   = "2.5",
+    comment   = "companion to luaotfload-main.lua",
+    author    = "Hans Hagen, Khaled Hosny, Elie Roux, Philipp Gesang",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local type, next        = type, next
+local tonumber          = tonumber
+local tostring          = tostring
+
+local lpeg              = require "lpeg"
+local lpegmatch         = lpeg.match
+local P                 = lpeg.P
+local R                 = lpeg.R
+local C                 = lpeg.C
+
+---[[ begin included font-ltx.lua ]]
+--- this appears to be based in part on luatex-fonts-def.lua
+
+local fonts             = fonts
+local definers          = fonts.definers
+local handlers          = fonts.handlers
+
+local as_script, normalize
+
+if handlers then
+    normalize = handlers.otf.features.normalize
+else
+    normalize = function () end
+    as_script = true
+end
+
+
+--HH A bit of tuning for definitions.
+
+if fonts.constructors then
+    fonts.constructors.namemode = "specification" -- somehow latex needs this (changed name!) => will change into an overload
+end
+
+--[[HH--
+    tricky: we sort of bypass the parser and directly feed all into
+    the sub parser
+--HH]]--
+
+function fonts.definers.getspecification(str)
+    return "", str, "", ":", str
+end
+
+local log              = luaotfload.log
+local report           = log.report
+
+local stringfind       = string.find
+local stringlower      = string.lower
+local stringgsub       = string.gsub
+local stringsub        = string.sub
+local stringformat     = string.format
+local stringis_empty   = string.is_empty
+local mathceil         = math.ceil
+
+local defaults = {
+    dflt = {
+        "ccmp", "locl", "rlig", "liga", "clig",
+        "kern", "mark", "mkmk", 'itlc',
+    },
+    arab = {
+        "ccmp", "locl", "isol", "fina", "fin2",
+        "fin3", "medi", "med2", "init", "rlig",
+        "calt", "liga", "cswh", "mset", "curs",
+        "kern", "mark", "mkmk",
+    },
+    deva = {
+        "ccmp", "locl", "init", "nukt", "akhn",
+        "rphf", "blwf", "half", "pstf", "vatu",
+        "pres", "blws", "abvs", "psts", "haln",
+        "calt", "blwm", "abvm", "dist", "kern",
+        "mark", "mkmk",
+    },
+    khmr = {
+        "ccmp", "locl", "pref", "blwf", "abvf",
+        "pstf", "pres", "blws", "abvs", "psts",
+        "clig", "calt", "blwm", "abvm", "dist",
+        "kern", "mark", "mkmk",
+    },
+    thai = {
+        "ccmp", "locl", "liga", "kern", "mark",
+        "mkmk",
+    },
+    hang = {
+        "ccmp", "ljmo", "vjmo", "tjmo",
+    },
+}
+
+local global_defaults = { mode = "node" }
+
+defaults.beng = defaults.deva
+defaults.guru = defaults.deva
+defaults.gujr = defaults.deva
+defaults.orya = defaults.deva
+defaults.taml = defaults.deva
+defaults.telu = defaults.deva
+defaults.knda = defaults.deva
+defaults.mlym = defaults.deva
+defaults.sinh = defaults.deva
+
+defaults.syrc = defaults.arab
+defaults.mong = defaults.arab
+defaults.nko  = defaults.arab
+
+defaults.tibt = defaults.khmr
+
+defaults.lao  = defaults.thai
+
+---[[ begin excerpt from font-ott.lua ]]
+
+local scripts = {
+    ['arab'] = 'arabic',
+    ['armn'] = 'armenian',
+    ['bali'] = 'balinese',
+    ['beng'] = 'bengali',
+    ['bopo'] = 'bopomofo',
+    ['brai'] = 'braille',
+    ['bugi'] = 'buginese',
+    ['buhd'] = 'buhid',
+    ['byzm'] = 'byzantine music',
+    ['cans'] = 'canadian syllabics',
+    ['cher'] = 'cherokee',
+    ['copt'] = 'coptic',
+    ['cprt'] = 'cypriot syllabary',
+    ['cyrl'] = 'cyrillic',
+    ['deva'] = 'devanagari',
+    ['dsrt'] = 'deseret',
+    ['ethi'] = 'ethiopic',
+    ['geor'] = 'georgian',
+    ['glag'] = 'glagolitic',
+    ['goth'] = 'gothic',
+    ['grek'] = 'greek',
+    ['gujr'] = 'gujarati',
+    ['guru'] = 'gurmukhi',
+    ['hang'] = 'hangul',
+    ['hani'] = 'cjk ideographic',
+    ['hano'] = 'hanunoo',
+    ['hebr'] = 'hebrew',
+    ['ital'] = 'old italic',
+    ['jamo'] = 'hangul jamo',
+    ['java'] = 'javanese',
+    ['kana'] = 'hiragana and katakana',
+    ['khar'] = 'kharosthi',
+    ['khmr'] = 'khmer',
+    ['knda'] = 'kannada',
+    ['lao' ] = 'lao',
+    ['latn'] = 'latin',
+    ['limb'] = 'limbu',
+    ['linb'] = 'linear b',
+    ['math'] = 'mathematical alphanumeric symbols',
+    ['mlym'] = 'malayalam',
+    ['mong'] = 'mongolian',
+    ['musc'] = 'musical symbols',
+    ['mymr'] = 'myanmar',
+    ['nko' ] = "n'ko",
+    ['ogam'] = 'ogham',
+    ['orya'] = 'oriya',
+    ['osma'] = 'osmanya',
+    ['phag'] = 'phags-pa',
+    ['phnx'] = 'phoenician',
+    ['runr'] = 'runic',
+    ['shaw'] = 'shavian',
+    ['sinh'] = 'sinhala',
+    ['sylo'] = 'syloti nagri',
+    ['syrc'] = 'syriac',
+    ['tagb'] = 'tagbanwa',
+    ['tale'] = 'tai le',
+    ['talu'] = 'tai lu',
+    ['taml'] = 'tamil',
+    ['telu'] = 'telugu',
+    ['tfng'] = 'tifinagh',
+    ['tglg'] = 'tagalog',
+    ['thaa'] = 'thaana',
+    ['thai'] = 'thai',
+    ['tibt'] = 'tibetan',
+    ['ugar'] = 'ugaritic cuneiform',
+    ['xpeo'] = 'old persian cuneiform',
+    ['xsux'] = 'sumero-akkadian cuneiform',
+    ['yi'  ] = 'yi',
+}
+
+local languages = {
+    ['aba'] = 'abaza',
+    ['abk'] = 'abkhazian',
+    ['ady'] = 'adyghe',
+    ['afk'] = 'afrikaans',
+    ['afr'] = 'afar',
+    ['agw'] = 'agaw',
+    ['als'] = 'alsatian',
+    ['alt'] = 'altai',
+    ['amh'] = 'amharic',
+    ['ara'] = 'arabic',
+    ['ari'] = 'aari',
+    ['ark'] = 'arakanese',
+    ['asm'] = 'assamese',
+    ['ath'] = 'athapaskan',
+    ['avr'] = 'avar',
+    ['awa'] = 'awadhi',
+    ['aym'] = 'aymara',
+    ['aze'] = 'azeri',
+    ['bad'] = 'badaga',
+    ['bag'] = 'baghelkhandi',
+    ['bal'] = 'balkar',
+    ['bau'] = 'baule',
+    ['bbr'] = 'berber',
+    ['bch'] = 'bench',
+    ['bcr'] = 'bible cree',
+    ['bel'] = 'belarussian',
+    ['bem'] = 'bemba',
+    ['ben'] = 'bengali',
+    ['bgr'] = 'bulgarian',
+    ['bhi'] = 'bhili',
+    ['bho'] = 'bhojpuri',
+    ['bik'] = 'bikol',
+    ['bil'] = 'bilen',
+    ['bkf'] = 'blackfoot',
+    ['bli'] = 'balochi',
+    ['bln'] = 'balante',
+    ['blt'] = 'balti',
+    ['bmb'] = 'bambara',
+    ['bml'] = 'bamileke',
+    ['bos'] = 'bosnian',
+    ['bre'] = 'breton',
+    ['brh'] = 'brahui',
+    ['bri'] = 'braj bhasha',
+    ['brm'] = 'burmese',
+    ['bsh'] = 'bashkir',
+    ['bti'] = 'beti',
+    ['cat'] = 'catalan',
+    ['ceb'] = 'cebuano',
+    ['che'] = 'chechen',
+    ['chg'] = 'chaha gurage',
+    ['chh'] = 'chattisgarhi',
+    ['chi'] = 'chichewa',
+    ['chk'] = 'chukchi',
+    ['chp'] = 'chipewyan',
+    ['chr'] = 'cherokee',
+    ['chu'] = 'chuvash',
+    ['cmr'] = 'comorian',
+    ['cop'] = 'coptic',
+    ['cos'] = 'corsican',
+    ['cre'] = 'cree',
+    ['crr'] = 'carrier',
+    ['crt'] = 'crimean tatar',
+    ['csl'] = 'church slavonic',
+    ['csy'] = 'czech',
+    ['dan'] = 'danish',
+    ['dar'] = 'dargwa',
+    ['dcr'] = 'woods cree',
+    ['deu'] = 'german',
+    ['dgr'] = 'dogri',
+    ['div'] = 'divehi',
+    ['djr'] = 'djerma',
+    ['dng'] = 'dangme',
+    ['dnk'] = 'dinka',
+    ['dri'] = 'dari',
+    ['dun'] = 'dungan',
+    ['dzn'] = 'dzongkha',
+    ['ebi'] = 'ebira',
+    ['ecr'] = 'eastern cree',
+    ['edo'] = 'edo',
+    ['efi'] = 'efik',
+    ['ell'] = 'greek',
+    ['eng'] = 'english',
+    ['erz'] = 'erzya',
+    ['esp'] = 'spanish',
+    ['eti'] = 'estonian',
+    ['euq'] = 'basque',
+    ['evk'] = 'evenki',
+    ['evn'] = 'even',
+    ['ewe'] = 'ewe',
+    ['fan'] = 'french antillean',
+    ['far'] = 'farsi',
+    ['fin'] = 'finnish',
+    ['fji'] = 'fijian',
+    ['fle'] = 'flemish',
+    ['fne'] = 'forest nenets',
+    ['fon'] = 'fon',
+    ['fos'] = 'faroese',
+    ['fra'] = 'french',
+    ['fri'] = 'frisian',
+    ['frl'] = 'friulian',
+    ['fta'] = 'futa',
+    ['ful'] = 'fulani',
+    ['gad'] = 'ga',
+    ['gae'] = 'gaelic',
+    ['gag'] = 'gagauz',
+    ['gal'] = 'galician',
+    ['gar'] = 'garshuni',
+    ['gaw'] = 'garhwali',
+    ['gez'] = "ge'ez",
+    ['gil'] = 'gilyak',
+    ['gmz'] = 'gumuz',
+    ['gon'] = 'gondi',
+    ['grn'] = 'greenlandic',
+    ['gro'] = 'garo',
+    ['gua'] = 'guarani',
+    ['guj'] = 'gujarati',
+    ['hai'] = 'haitian',
+    ['hal'] = 'halam',
+    ['har'] = 'harauti',
+    ['hau'] = 'hausa',
+    ['haw'] = 'hawaiin',
+    ['hbn'] = 'hammer-banna',
+    ['hil'] = 'hiligaynon',
+    ['hin'] = 'hindi',
+    ['hma'] = 'high mari',
+    ['hnd'] = 'hindko',
+    ['ho']  = 'ho',
+    ['hri'] = 'harari',
+    ['hrv'] = 'croatian',
+    ['hun'] = 'hungarian',
+    ['hye'] = 'armenian',
+    ['ibo'] = 'igbo',
+    ['ijo'] = 'ijo',
+    ['ilo'] = 'ilokano',
+    ['ind'] = 'indonesian',
+    ['ing'] = 'ingush',
+    ['inu'] = 'inuktitut',
+    ['iri'] = 'irish',
+    ['irt'] = 'irish traditional',
+    ['isl'] = 'icelandic',
+    ['ism'] = 'inari sami',
+    ['ita'] = 'italian',
+    ['iwr'] = 'hebrew',
+    ['jan'] = 'japanese',
+    ['jav'] = 'javanese',
+    ['jii'] = 'yiddish',
+    ['jud'] = 'judezmo',
+    ['jul'] = 'jula',
+    ['kab'] = 'kabardian',
+    ['kac'] = 'kachchi',
+    ['kal'] = 'kalenjin',
+    ['kan'] = 'kannada',
+    ['kar'] = 'karachay',
+    ['kat'] = 'georgian',
+    ['kaz'] = 'kazakh',
+    ['keb'] = 'kebena',
+    ['kge'] = 'khutsuri georgian',
+    ['kha'] = 'khakass',
+    ['khk'] = 'khanty-kazim',
+    ['khm'] = 'khmer',
+    ['khs'] = 'khanty-shurishkar',
+    ['khv'] = 'khanty-vakhi',
+    ['khw'] = 'khowar',
+    ['kik'] = 'kikuyu',
+    ['kir'] = 'kirghiz',
+    ['kis'] = 'kisii',
+    ['kkn'] = 'kokni',
+    ['klm'] = 'kalmyk',
+    ['kmb'] = 'kamba',
+    ['kmn'] = 'kumaoni',
+    ['kmo'] = 'komo',
+    ['kms'] = 'komso',
+    ['knr'] = 'kanuri',
+    ['kod'] = 'kodagu',
+    ['koh'] = 'korean old hangul',
+    ['kok'] = 'konkani',
+    ['kon'] = 'kikongo',
+    ['kop'] = 'komi-permyak',
+    ['kor'] = 'korean',
+    ['koz'] = 'komi-zyrian',
+    ['kpl'] = 'kpelle',
+    ['kri'] = 'krio',
+    ['krk'] = 'karakalpak',
+    ['krl'] = 'karelian',
+    ['krm'] = 'karaim',
+    ['krn'] = 'karen',
+    ['krt'] = 'koorete',
+    ['ksh'] = 'kashmiri',
+    ['ksi'] = 'khasi',
+    ['ksm'] = 'kildin sami',
+    ['kui'] = 'kui',
+    ['kul'] = 'kulvi',
+    ['kum'] = 'kumyk',
+    ['kur'] = 'kurdish',
+    ['kuu'] = 'kurukh',
+    ['kuy'] = 'kuy',
+    ['kyk'] = 'koryak',
+    ['lad'] = 'ladin',
+    ['lah'] = 'lahuli',
+    ['lak'] = 'lak',
+    ['lam'] = 'lambani',
+    ['lao'] = 'lao',
+    ['lat'] = 'latin',
+    ['laz'] = 'laz',
+    ['lcr'] = 'l-cree',
+    ['ldk'] = 'ladakhi',
+    ['lez'] = 'lezgi',
+    ['lin'] = 'lingala',
+    ['lma'] = 'low mari',
+    ['lmb'] = 'limbu',
+    ['lmw'] = 'lomwe',
+    ['lsb'] = 'lower sorbian',
+    ['lsm'] = 'lule sami',
+    ['lth'] = 'lithuanian',
+    ['ltz'] = 'luxembourgish',
+    ['lub'] = 'luba',
+    ['lug'] = 'luganda',
+    ['luh'] = 'luhya',
+    ['luo'] = 'luo',
+    ['lvi'] = 'latvian',
+    ['maj'] = 'majang',
+    ['mak'] = 'makua',
+    ['mal'] = 'malayalam traditional',
+    ['man'] = 'mansi',
+    ['map'] = 'mapudungun',
+    ['mar'] = 'marathi',
+    ['maw'] = 'marwari',
+    ['mbn'] = 'mbundu',
+    ['mch'] = 'manchu',
+    ['mcr'] = 'moose cree',
+    ['mde'] = 'mende',
+    ['men'] = "me'en",
+    ['miz'] = 'mizo',
+    ['mkd'] = 'macedonian',
+    ['mle'] = 'male',
+    ['mlg'] = 'malagasy',
+    ['mln'] = 'malinke',
+    ['mlr'] = 'malayalam reformed',
+    ['mly'] = 'malay',
+    ['mnd'] = 'mandinka',
+    ['mng'] = 'mongolian',
+    ['mni'] = 'manipuri',
+    ['mnk'] = 'maninka',
+    ['mnx'] = 'manx gaelic',
+    ['moh'] = 'mohawk',
+    ['mok'] = 'moksha',
+    ['mol'] = 'moldavian',
+    ['mon'] = 'mon',
+    ['mor'] = 'moroccan',
+    ['mri'] = 'maori',
+    ['mth'] = 'maithili',
+    ['mts'] = 'maltese',
+    ['mun'] = 'mundari',
+    ['nag'] = 'naga-assamese',
+    ['nan'] = 'nanai',
+    ['nas'] = 'naskapi',
+    ['ncr'] = 'n-cree',
+    ['ndb'] = 'ndebele',
+    ['ndg'] = 'ndonga',
+    ['nep'] = 'nepali',
+    ['new'] = 'newari',
+    ['ngr'] = 'nagari',
+    ['nhc'] = 'norway house cree',
+    ['nis'] = 'nisi',
+    ['niu'] = 'niuean',
+    ['nkl'] = 'nkole',
+    ['nko'] = "n'ko",
+    ['nld'] = 'dutch',
+    ['nog'] = 'nogai',
+    ['nor'] = 'norwegian',
+    ['nsm'] = 'northern sami',
+    ['nta'] = 'northern tai',
+    ['nto'] = 'esperanto',
+    ['nyn'] = 'nynorsk',
+    ['oci'] = 'occitan',
+    ['ocr'] = 'oji-cree',
+    ['ojb'] = 'ojibway',
+    ['ori'] = 'oriya',
+    ['oro'] = 'oromo',
+    ['oss'] = 'ossetian',
+    ['paa'] = 'palestinian aramaic',
+    ['pal'] = 'pali',
+    ['pan'] = 'punjabi',
+    ['pap'] = 'palpa',
+    ['pas'] = 'pashto',
+    ['pgr'] = 'polytonic greek',
+    ['pil'] = 'pilipino',
+    ['plg'] = 'palaung',
+    ['plk'] = 'polish',
+    ['pro'] = 'provencal',
+    ['ptg'] = 'portuguese',
+    ['qin'] = 'chin',
+    ['raj'] = 'rajasthani',
+    ['rbu'] = 'russian buriat',
+    ['rcr'] = 'r-cree',
+    ['ria'] = 'riang',
+    ['rms'] = 'rhaeto-romanic',
+    ['rom'] = 'romanian',
+    ['roy'] = 'romany',
+    ['rsy'] = 'rusyn',
+    ['rua'] = 'ruanda',
+    ['rus'] = 'russian',
+    ['sad'] = 'sadri',
+    ['san'] = 'sanskrit',
+    ['sat'] = 'santali',
+    ['say'] = 'sayisi',
+    ['sek'] = 'sekota',
+    ['sel'] = 'selkup',
+    ['sgo'] = 'sango',
+    ['shn'] = 'shan',
+    ['sib'] = 'sibe',
+    ['sid'] = 'sidamo',
+    ['sig'] = 'silte gurage',
+    ['sks'] = 'skolt sami',
+    ['sky'] = 'slovak',
+    ['sla'] = 'slavey',
+    ['slv'] = 'slovenian',
+    ['sml'] = 'somali',
+    ['smo'] = 'samoan',
+    ['sna'] = 'sena',
+    ['snd'] = 'sindhi',
+    ['snh'] = 'sinhalese',
+    ['snk'] = 'soninke',
+    ['sog'] = 'sodo gurage',
+    ['sot'] = 'sotho',
+    ['sqi'] = 'albanian',
+    ['srb'] = 'serbian',
+    ['srk'] = 'saraiki',
+    ['srr'] = 'serer',
+    ['ssl'] = 'south slavey',
+    ['ssm'] = 'southern sami',
+    ['sur'] = 'suri',
+    ['sva'] = 'svan',
+    ['sve'] = 'swedish',
+    ['swa'] = 'swadaya aramaic',
+    ['swk'] = 'swahili',
+    ['swz'] = 'swazi',
+    ['sxt'] = 'sutu',
+    ['syr'] = 'syriac',
+    ['tab'] = 'tabasaran',
+    ['taj'] = 'tajiki',
+    ['tam'] = 'tamil',
+    ['tat'] = 'tatar',
+    ['tcr'] = 'th-cree',
+    ['tel'] = 'telugu',
+    ['tgn'] = 'tongan',
+    ['tgr'] = 'tigre',
+    ['tgy'] = 'tigrinya',
+    ['tha'] = 'thai',
+    ['tht'] = 'tahitian',
+    ['tib'] = 'tibetan',
+    ['tkm'] = 'turkmen',
+    ['tmn'] = 'temne',
+    ['tna'] = 'tswana',
+    ['tne'] = 'tundra nenets',
+    ['tng'] = 'tonga',
+    ['tod'] = 'todo',
+    ['trk'] = 'turkish',
+    ['tsg'] = 'tsonga',
+    ['tua'] = 'turoyo aramaic',
+    ['tul'] = 'tulu',
+    ['tuv'] = 'tuvin',
+    ['twi'] = 'twi',
+    ['udm'] = 'udmurt',
+    ['ukr'] = 'ukrainian',
+    ['urd'] = 'urdu',
+    ['usb'] = 'upper sorbian',
+    ['uyg'] = 'uyghur',
+    ['uzb'] = 'uzbek',
+    ['ven'] = 'venda',
+    ['vit'] = 'vietnamese',
+    ['wa' ] = 'wa',
+    ['wag'] = 'wagdi',
+    ['wcr'] = 'west-cree',
+    ['wel'] = 'welsh',
+    ['wlf'] = 'wolof',
+    ['xbd'] = 'tai lue',
+    ['xhs'] = 'xhosa',
+    ['yak'] = 'yakut',
+    ['yba'] = 'yoruba',
+    ['ycr'] = 'y-cree',
+    ['yic'] = 'yi classic',
+    ['yim'] = 'yi modern',
+    ['zhh'] = 'chinese hong kong',
+    ['zhp'] = 'chinese phonetic',
+    ['zhs'] = 'chinese simplified',
+    ['zht'] = 'chinese traditional',
+    ['znd'] = 'zande',
+    ['zul'] = 'zulu'
+}
+
+local features = {
+    ['aalt'] = 'access all alternates',
+    ['abvf'] = 'above-base forms',
+    ['abvm'] = 'above-base mark positioning',
+    ['abvs'] = 'above-base substitutions',
+    ['afrc'] = 'alternative fractions',
+    ['akhn'] = 'akhands',
+    ['blwf'] = 'below-base forms',
+    ['blwm'] = 'below-base mark positioning',
+    ['blws'] = 'below-base substitutions',
+    ['c2pc'] = 'petite capitals from capitals',
+    ['c2sc'] = 'small capitals from capitals',
+    ['calt'] = 'contextual alternates',
+    ['case'] = 'case-sensitive forms',
+    ['ccmp'] = 'glyph composition/decomposition',
+    ['cjct'] = 'conjunct forms',
+    ['clig'] = 'contextual ligatures',
+    ['cpsp'] = 'capital spacing',
+    ['cswh'] = 'contextual swash',
+    ['curs'] = 'cursive positioning',
+    ['dflt'] = 'default processing',
+    ['dist'] = 'distances',
+    ['dlig'] = 'discretionary ligatures',
+    ['dnom'] = 'denominators',
+    ['dtls'] = 'dotless forms', -- math
+    ['expt'] = 'expert forms',
+    ['falt'] = 'final glyph alternates',
+    ['fin2'] = 'terminal forms #2',
+    ['fin3'] = 'terminal forms #3',
+    ['fina'] = 'terminal forms',
+    ['flac'] = 'flattened accents over capitals', -- math
+    ['frac'] = 'fractions',
+    ['fwid'] = 'full width',
+    ['half'] = 'half forms',
+    ['haln'] = 'halant forms',
+    ['halt'] = 'alternate half width',
+    ['hist'] = 'historical forms',
+    ['hkna'] = 'horizontal kana alternates',
+    ['hlig'] = 'historical ligatures',
+    ['hngl'] = 'hangul',
+    ['hojo'] = 'hojo kanji forms',
+    ['hwid'] = 'half width',
+    ['init'] = 'initial forms',
+    ['isol'] = 'isolated forms',
+    ['ital'] = 'italics',
+    ['jalt'] = 'justification alternatives',
+    ['jp04'] = 'jis2004 forms',
+    ['jp78'] = 'jis78 forms',
+    ['jp83'] = 'jis83 forms',
+    ['jp90'] = 'jis90 forms',
+    ['kern'] = 'kerning',
+    ['lfbd'] = 'left bounds',
+    ['liga'] = 'standard ligatures',
+    ['ljmo'] = 'leading jamo forms',
+    ['lnum'] = 'lining figures',
+    ['locl'] = 'localized forms',
+    ['mark'] = 'mark positioning',
+    ['med2'] = 'medial forms #2',
+    ['medi'] = 'medial forms',
+    ['mgrk'] = 'mathematical greek',
+    ['mkmk'] = 'mark to mark positioning',
+    ['mset'] = 'mark positioning via substitution',
+    ['nalt'] = 'alternate annotation forms',
+    ['nlck'] = 'nlc kanji forms',
+    ['nukt'] = 'nukta forms',
+    ['numr'] = 'numerators',
+    ['onum'] = 'old style figures',
+    ['opbd'] = 'optical bounds',
+    ['ordn'] = 'ordinals',
+    ['ornm'] = 'ornaments',
+    ['palt'] = 'proportional alternate width',
+    ['pcap'] = 'petite capitals',
+    ['pnum'] = 'proportional figures',
+    ['pref'] = 'pre-base forms',
+    ['pres'] = 'pre-base substitutions',
+    ['pstf'] = 'post-base forms',
+    ['psts'] = 'post-base substitutions',
+    ['pwid'] = 'proportional widths',
+    ['qwid'] = 'quarter widths',
+    ['rand'] = 'randomize',
+    ['rkrf'] = 'rakar forms',
+    ['rlig'] = 'required ligatures',
+    ['rphf'] = 'reph form',
+    ['rtbd'] = 'right bounds',
+    ['rtla'] = 'right-to-left alternates',
+    ['rtlm'] = 'right to left math', -- math
+    ['ruby'] = 'ruby notation forms',
+    ['salt'] = 'stylistic alternates',
+    ['sinf'] = 'scientific inferiors',
+    ['size'] = 'optical size',
+    ['smcp'] = 'small capitals',
+    ['smpl'] = 'simplified forms',
+ -- ['ss01'] = 'stylistic set 1',
+ -- ['ss02'] = 'stylistic set 2',
+ -- ['ss03'] = 'stylistic set 3',
+ -- ['ss04'] = 'stylistic set 4',
+ -- ['ss05'] = 'stylistic set 5',
+ -- ['ss06'] = 'stylistic set 6',
+ -- ['ss07'] = 'stylistic set 7',
+ -- ['ss08'] = 'stylistic set 8',
+ -- ['ss09'] = 'stylistic set 9',
+ -- ['ss10'] = 'stylistic set 10',
+ -- ['ss11'] = 'stylistic set 11',
+ -- ['ss12'] = 'stylistic set 12',
+ -- ['ss13'] = 'stylistic set 13',
+ -- ['ss14'] = 'stylistic set 14',
+ -- ['ss15'] = 'stylistic set 15',
+ -- ['ss16'] = 'stylistic set 16',
+ -- ['ss17'] = 'stylistic set 17',
+ -- ['ss18'] = 'stylistic set 18',
+ -- ['ss19'] = 'stylistic set 19',
+ -- ['ss20'] = 'stylistic set 20',
+    ['ssty'] = 'script style', -- math
+    ['subs'] = 'subscript',
+    ['sups'] = 'superscript',
+    ['swsh'] = 'swash',
+    ['titl'] = 'titling',
+    ['tjmo'] = 'trailing jamo forms',
+    ['tnam'] = 'traditional name forms',
+    ['tnum'] = 'tabular figures',
+    ['trad'] = 'traditional forms',
+    ['twid'] = 'third widths',
+    ['unic'] = 'unicase',
+    ['valt'] = 'alternate vertical metrics',
+    ['vatu'] = 'vattu variants',
+    ['vert'] = 'vertical writing',
+    ['vhal'] = 'alternate vertical half metrics',
+    ['vjmo'] = 'vowel jamo forms',
+    ['vkna'] = 'vertical kana alternates',
+    ['vkrn'] = 'vertical kerning',
+    ['vpal'] = 'proportional alternate vertical metrics',
+    ['vrt2'] = 'vertical rotation',
+    ['zero'] = 'slashed zero',
+
+    ['trep'] = 'traditional tex replacements',
+    ['tlig'] = 'traditional tex ligatures',
+
+    ['ss..'] = 'stylistic set ..',
+    ['cv..'] = 'character variant ..',
+    ['js..'] = 'justification ..',
+
+    ["dv.."] = "devanagari ..",
+}
+
+local baselines = {
+    ['hang'] = 'hanging baseline',
+    ['icfb'] = 'ideographic character face bottom edge baseline',
+    ['icft'] = 'ideographic character face tope edige baseline',
+    ['ideo'] = 'ideographic em-box bottom edge baseline',
+    ['idtp'] = 'ideographic em-box top edge baseline',
+    ['math'] = 'mathmatical centered baseline',
+    ['romn'] = 'roman baseline'
+}
+
+local swapped = function (h)
+    local r = { }
+    for k, v in next, h do
+        r[stringgsub(v,"[^a-z0-9]","")] = k -- is already lower
+    end
+    return r
+end
+
+local verbosescripts   = swapped(scripts  )
+local verboselanguages = swapped(languages)
+local verbosefeatures  = swapped(features )
+local verbosebaselines = swapped(baselines)
+
+---[[ end excerpt from font-ott.lua ]]
+
+--[[doc--
+
+    As discussed, we will issue a warning because of incomplete support
+    when one of the scripts below is requested.
+
+    Reference: https://github.com/lualatex/luaotfload/issues/31
+
+--doc]]--
+
+local support_incomplete = table.tohash({
+    "deva", "beng", "guru", "gujr",
+    "orya", "taml", "telu", "knda",
+    "mlym", "sinh",
+}, true)
+
+--[[doc--
+
+    Which features are active by default depends on the script
+    requested.
+
+--doc]]--
+
+--- (string, string) dict -> (string, string) dict
+local set_default_features = function (speclist)
+    speclist = speclist or { }
+    speclist[""] = nil --- invalid options stub
+
+    --- handle language tag
+    local language = speclist.language
+    if language then --- already lowercase at this point
+        language = stringgsub(language, "[^a-z0-9]", "")
+        language = rawget(verboselanguages, language) -- srsly, rawget?
+                or (languages[language] and language)
+                or "dflt"
+    else
+        language = "dflt"
+    end
+    speclist.language = language
+
+    --- handle script tag
+    local script = speclist.script
+    if script then
+        script = stringgsub(script, "[^a-z0-9]","")
+        script = rawget(verbosescripts, script)
+              or (scripts[script] and script)
+              or "dflt"
+        if support_incomplete[script] then
+            report("log", 0, "load",
+                "support for the requested script: "
+                .. "%q may be incomplete", script)
+        end
+    else
+        script = "dflt"
+    end
+    speclist.script = script
+
+    report("log", 0, "load",
+        "auto-selecting default features for script: %s",
+        script)
+
+    local requested = defaults[script]
+    if not requested then
+        report("log", 0, "load",
+            "no defaults for script %q, falling back to \"dflt\"",
+            script)
+        requested = defaults.dflt
+    end
+
+    for i=1, #requested do
+        local feat = requested[i]
+        if speclist[feat] ~= false then speclist[feat] = true end
+    end
+
+    for feat, state in next, global_defaults do
+        --- This is primarily intended for setting node
+        --- mode unless “base” is requested, as stated
+        --- in the manual.
+        if not speclist[feat] then speclist[feat] = state end
+    end
+    return speclist
+end
+
+local import_values = {
+    --- That’s what the 1.x parser did, not quite as graciously,
+    --- with an array of branch expressions.
+    -- "style", "optsize",--> from slashed notation; handled otherwise
+    { "lookup", false },
+    { "sub",    false },
+    { "mode",   true },
+}
+
+local lookup_types = { "anon", "file", "kpse", "my", "name", "path" }
+
+local select_lookup = function (request)
+    for i=1, #lookup_types do
+        local lookup = lookup_types[i]
+        local value  = request[lookup]
+        if value then
+            return lookup, value
+        end
+    end
+end
+
+local supported = {
+    b    = "b",
+    i    = "i",
+    bi   = "bi",
+    aat  = false,
+    icu  = false,
+    gr   = false,
+}
+
+--- (string | (string * string) | bool) list -> (string * number)
+local handle_slashed = function (modifiers)
+    local style, optsize
+    for i=1, #modifiers do
+        local mod  = modifiers[i]
+        if type(mod) == "table" and mod[1] == "optsize" then --> optical size
+            optsize = tonumber(mod[2])
+        elseif mod == false then
+            --- ignore
+            report("log", 0,
+                "load", "unsupported font option: %s", v)
+        elseif supported[mod] then
+            style = supported[mod]
+        elseif not stringis_empty(mod) then
+            style = stringgsub(mod, "[^%a%d]", "")
+        end
+    end
+    return style, optsize
+end
+
+local extract_subfont
+do
+    local eof         = P(-1)
+    local digit       = R"09"
+    --- Theoretically a valid subfont address can be up to ten
+    --- digits long.
+    local sub_expr    = P"(" * C(digit^1) * P")" * eof
+    local full_path   = C(P(1 - sub_expr)^1)
+    extract_subfont   = full_path * sub_expr
+end
+
+--- spec -> spec
+local handle_request = function (specification)
+    local request = lpegmatch(luaotfload.parsers.font_request,
+                              specification.specification)
+    if not request then
+        --- happens when called with an absolute path
+        --- in an anonymous lookup;
+        --- we try to behave as friendly as possible
+        --- just go with it ...
+        report("log", 1, "load", "invalid request %q of type anon",
+            specification.specification)
+        report("log", 1, "load",
+               "use square bracket syntax or consult the documentation.")
+        --- The result of \fontname must be re-feedable into \font
+        --- which is expected by the Latex font mechanism. Now this
+        --- is complicated with TTC fonts that need to pass the
+        --- number of the requested subfont along with the file name.
+        --- Thus we test whether the request is a bare path only or
+        --- ends in a subfont expression (decimal digits inside
+        --- parentheses).
+        --- https://github.com/lualatex/luaotfload/issues/57
+        local fullpath, sub = lpegmatch(extract_subfont,
+                                        specification.specification)
+        if fullpath and sub then
+            specification.sub  = tonumber(sub)
+            specification.name = fullpath
+        else
+            specification.name = specification.specification
+        end
+        specification.lookup = "path"
+        return specification
+    end
+    local lookup, name  = select_lookup(request)
+    request.features    = set_default_features(request.features)
+
+    if name then
+        specification.name    = name
+        specification.lookup  = lookup or specification.lookup
+    end
+
+    if request.modifiers then
+        local style, optsize = handle_slashed(request.modifiers)
+        specification.style, specification.optsize = style, optsize
+    end
+
+    for n=1, #import_values do
+        local feat       = import_values[n][1]
+        local keep       = import_values[n][2]
+        local newvalue   = request.features[feat]
+        if newvalue then
+            specification[feat] = request.features[feat]
+            if not keep then
+                request.features[feat] = nil
+            end
+        end
+    end
+
+    --- The next line sets the “rand” feature to “random”; I haven’t
+    --- investigated it any further (luatex-fonts-ext), so it will
+    --- just stay here.
+    specification.features.normal = normalize (request.features)
+    return specification
+end
+
+if as_script == true then --- skip the remainder of the file
+    fonts.names.handle_request = handle_request
+    report ("log", 5, "load",
+            "Exiting early from luaotfload-features.lua.")
+    return
+else
+    local registersplit = definers.registersplit
+    registersplit (":", handle_request, "cryptic")
+    registersplit ("",  handle_request, "more cryptic") -- catches \font\text=[names]
+end
+
+---[[ end included font-ltx.lua ]]
+
+--[[doc--
+This uses the code from luatex-fonts-merged (<- font-otc.lua) instead
+of the removed luaotfload-font-otc.lua.
+
+TODO find out how far we get setting features without these lines,
+relying on luatex-fonts only (it *does* handle features somehow, after
+all).
+--doc]]--
+
+-- we assume that the other otf stuff is loaded already
+
+---[[ begin snippet from font-otc.lua ]]
+local trace_loading       = false  trackers.register("otf.loading", function(v) trace_loading = v end)
+local report_otf          = logs.reporter("fonts","otf loading")
+
+local otf                 = fonts.handlers.otf
+local registerotffeature  = otf.features.register
+local setmetatableindex   = table.setmetatableindex
+
+--[[HH--
+
+   In the userdata interface we can not longer tweak the loaded font as
+   conveniently as before. For instance, instead of pushing extra data in
+   in the table using the original structure, we now have to operate on
+   the mkiv representation. And as the fontloader interface is modelled
+   after fontforge we cannot change that one too much either.
+
+--HH]]--
+
+local types = {
+    substitution = "gsub_single",
+    ligature     = "gsub_ligature",
+    alternate    = "gsub_alternate",
+}
+
+setmetatableindex(types, function(t,k) t[k] = k return k end) -- "key"
+
+local everywhere = { ["*"] = { ["*"] = true } } -- or: { ["*"] = { "*" } }
+local noflags    = { }
+
+local function addfeature(data,feature,specifications)
+    local descriptions = data.descriptions
+    local resources    = data.resources
+    local lookups      = resources.lookups
+    local gsubfeatures = resources.features.gsub
+    if gsubfeatures and gsubfeatures[feature] then
+        -- already present
+    else
+        local sequences    = resources.sequences
+        local fontfeatures = resources.features
+        local unicodes     = resources.unicodes
+        local lookuptypes  = resources.lookuptypes
+        local splitter     = lpeg.splitter(" ",unicodes)
+        local done         = 0
+        local skip         = 0
+        if not specifications[1] then
+            -- so we accept a one entry specification
+            specifications = { specifications }
+        end
+        -- subtables are tables themselves but we also accept flattened singular subtables
+        for s=1,#specifications do
+            local specification = specifications[s]
+            local valid         = specification.valid
+            if not valid or valid(data,specification,feature) then
+                local initialize = specification.initialize
+                if initialize then
+                    -- when false is returned we initialize only once
+                    specification.initialize = initialize(specification) and initialize or nil
+                end
+                local askedfeatures = specification.features or everywhere
+                local subtables     = specification.subtables or { specification.data } or { }
+                local featuretype   = types[specification.type or "substitution"]
+                local featureflags  = specification.flags or noflags
+                local added         = false
+                local featurename   = stringformat("ctx_%s_%s",feature,s)
+                local st = { }
+                for t=1,#subtables do
+                    local list = subtables[t]
+                    local full = stringformat("%s_%s",featurename,t)
+                    st[t] = full
+                    if featuretype == "gsub_ligature" then
+                        lookuptypes[full] = "ligature"
+                        for code, ligature in next, list do
+                            local unicode = tonumber(code) or unicodes[code]
+                            local description = descriptions[unicode]
+                            if description then
+                                local slookups = description.slookups
+                                if type(ligature) == "string" then
+                                    ligature = { lpegmatch(splitter,ligature) }
+                                end
+                                local present = true
+                                for i=1,#ligature do
+                                    if not descriptions[ligature[i]] then
+                                        present = false
+                                        break
+                                    end
+                                end
+                                if present then
+                                    if slookups then
+                                        slookups[full] = ligature
+                                    else
+                                        description.slookups = { [full] = ligature }
+                                    end
+                                    done, added = done + 1, true
+                                else
+                                    skip = skip + 1
+                                end
+                            end
+                        end
+                    elseif featuretype == "gsub_single" then
+                        lookuptypes[full] = "substitution"
+                        for code, replacement in next, list do
+                            local unicode = tonumber(code) or unicodes[code]
+                            local description = descriptions[unicode]
+                            if description then
+                                local slookups = description.slookups
+                                replacement = tonumber(replacement) or unicodes[replacement]
+                                if descriptions[replacement] then
+                                    if slookups then
+                                        slookups[full] = replacement
+                                    else
+                                        description.slookups = { [full] = replacement }
+                                    end
+                                    done, added = done + 1, true
+                                end
+                            end
+                        end
+                    end
+                end
+                if added then
+                    -- script = { lang1, lang2, lang3 } or script = { lang1 = true, ... }
+                    for k, v in next, askedfeatures do
+                        if v[1] then
+                            askedfeatures[k] = table.tohash(v)
+                        end
+                    end
+                    sequences[#sequences+1] = {
+                        chain     = 0,
+                        features  = { [feature] = askedfeatures },
+                        flags     = featureflags,
+                        name      = featurename,
+                        subtables = st,
+                        type      = featuretype,
+                    }
+                    -- register in metadata (merge as there can be a few)
+                    if not gsubfeatures then
+                        gsubfeatures  = { }
+                        fontfeatures.gsub = gsubfeatures
+                    end
+                    local k = gsubfeatures[feature]
+                    if not k then
+                        k = { }
+                        gsubfeatures[feature] = k
+                    end
+                    for script, languages in next, askedfeatures do
+                        local kk = k[script]
+                        if not kk then
+                            kk = { }
+                            k[script] = kk
+                        end
+                        for language, value in next, languages do
+                            kk[language] = value
+                        end
+                    end
+                end
+            end
+        end
+        if trace_loading then
+            report_otf("registering feature %a, affected glyphs %a, skipped glyphs %a",feature,done,skip)
+        end
+    end
+end
+
+otf.enhancers.addfeature = addfeature
+
+local extrafeatures = { }
+
+function otf.addfeature(name,specification)
+    extrafeatures[name] = specification
+end
+
+local function enhance(data,filename,raw)
+    for feature, specification in next, extrafeatures do
+        addfeature(data,feature,specification)
+    end
+end
+
+otf.enhancers.register("check extra features",enhance)
+
+---[[ end snippet from font-otc.lua ]]
+
+local tlig = {
+    {
+        type      = "substitution",
+        features  = everywhere,
+        data      = {
+            [0x0022] = 0x201D,                   -- quotedblright
+            [0x0027] = 0x2019,                   -- quoteleft
+            [0x0060] = 0x2018,                   -- quoteright
+        },
+        flags     = { },
+    },
+    {
+        type     = "ligature",
+        features = everywhere,
+        data     = {
+            [0x2013] = {0x002D, 0x002D},         -- endash
+            [0x2014] = {0x002D, 0x002D, 0x002D}, -- emdash
+            [0x201C] = {0x2018, 0x2018},         -- quotedblleft
+            [0x201D] = {0x2019, 0x2019},         -- quotedblright
+            [0x00A1] = {0x0021, 0x2018},         -- exclamdown
+            [0x00BF] = {0x003F, 0x2018},         -- questiondown
+            --- next three originate in T1 encoding; Xetex applies
+            --- them too
+            [0x201E] = {0x002C, 0x002C},         -- quotedblbase
+            [0x00AB] = {0x003C, 0x003C},         -- LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
+            [0x00BB] = {0x003E, 0x003E},         -- RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
+        },
+        flags    = { },
+    },
+    {
+        type     = "ligature",
+        features = everywhere,
+        data     = {
+            [0x201C] = {0x0060, 0x0060},         -- quotedblleft
+            [0x201D] = {0x0027, 0x0027},         -- quotedblright
+            [0x00A1] = {0x0021, 0x0060},         -- exclamdown
+            [0x00BF] = {0x003F, 0x0060},         -- questiondown
+        },
+        flags    = { },
+    },
+}
+
+otf.addfeature ("tlig", tlig)
+otf.addfeature ("trep", { })
+
+local anum_arabic = { --- these are the same as in font-otc
+    [0x0030] = 0x0660,
+    [0x0031] = 0x0661,
+    [0x0032] = 0x0662,
+    [0x0033] = 0x0663,
+    [0x0034] = 0x0664,
+    [0x0035] = 0x0665,
+    [0x0036] = 0x0666,
+    [0x0037] = 0x0667,
+    [0x0038] = 0x0668,
+    [0x0039] = 0x0669,
+}
+
+local anum_persian = {--- these are the same as in font-otc
+    [0x0030] = 0x06F0,
+    [0x0031] = 0x06F1,
+    [0x0032] = 0x06F2,
+    [0x0033] = 0x06F3,
+    [0x0034] = 0x06F4,
+    [0x0035] = 0x06F5,
+    [0x0036] = 0x06F6,
+    [0x0037] = 0x06F7,
+    [0x0038] = 0x06F8,
+    [0x0039] = 0x06F9,
+}
+
+local function valid(data)
+    local features = data.resources.features
+    if features then
+        for k, v in next, features do
+            for k, v in next, v do
+                if v.arab then
+                    return true
+                end
+            end
+        end
+    end
+end
+
+local anum_specification = {
+    {
+        type     = "substitution",
+        features = { arab = { far = true, urd = true, snd = true } },
+        data     = anum_persian,
+        flags    = { },
+        valid    = valid,
+    },
+    {
+        type     = "substitution",
+        features = { arab = { ["*"] = true } },
+        data     = anum_arabic,
+        flags    = { },
+        valid    = valid,
+    },
+}
+
+--[[doc--
+
+    Below the specifications as given in the removed font-otc.lua.
+    The rest was identical to what this file had from the beginning.
+    Both make the “anum.tex” test pass anyways.
+
+--doc]]--
+
+otf.addfeature("anum",anum_specification)
+
+registerotffeature {
+    name        = 'anum',
+    description = 'arabic digits',
+}
+
+-- vim:tw=71:sw=4:ts=4:expandtab