မဝ်ဂျူ:ur-translit

Background

THIS WILL REQUIRE DIACRITICS (USED CORRECTLY), Diacritics can be found at http://udb.gov.pk (which is NOT always correct). This should work correctly for majority of the work, although is still in progress.

Read #Usage notes for tips on how to use the module correctly:

Usage notes

All consonants must be paired to a vowel (a, i, u, ā, e, ī, o, ū) or a sukoon/jazm. Or else the module will return NIL (blank).
Alif MUST be paired to either a consonant or a vowel, or the module will return NIL.
if paired to a vowel, the alif will represent the vowel. If paired to a consonant, alif will represent "ā". If an initial alif is not paired to a vowel, the module will return nill.
compare the pairings نا (nā), اَن (an), اُن (un), and اِن (in).
Whenever there are two adjacent semivowels, the first semivowel will become the consonant and the second will be the vowel. To reverse that order, simply put a sukoon on the second semivowel.
baṛī ye (e, ai) and choṭī ye (ī, y) are distinguished medically using diacritics. However in the final position choṭī ye is always -ī (since choṭī ye cannot be "y" in the final position), and a final baṛī ye defaults to -ē but can become -ai with a preceding zabar.
If, for some reason, a final choṭī ye needs to be a "y", put a sukoon on it.
Noon ghunna ـن٘ـ/ـں generally represents a nasal vowel. The only exceptions being when a nasal vowel isn't possible (in Urdu), such as before b, bh, j, jh, g, gh, ḍh, dh, th, q (and before kh, ṭh, ṭ and ph, unless the nasal vowel is ā, ī, or ū). Since it is impossible for a nasal vowel to appear before these sounds, the module will return an assimilated nasal.
1. If a nasal vowel is not desired, use a sukoon to return a regular noon.
2. If ghunna is occurring after ā, ī, or ū but needs to assimilate with ph or kh, the assimilation must be manually entered. Since unlike all other vowels, ā, ī, and ū can actually be nasalized before these letters. For all consonants not mentioned, nasal assimilation can be predicted with only a jazm/sukoon (if it even occurs).
  - Noon ghunna assimilating with "k" is not as common in Urdu as it is in Hindi, it mainly appears in english loanwords (and only at the end of a word). In which case the assimilation can be predicted with a sukoon/jazm. This assimilation should disappear if the word is inflected. Compare بَینْک (baiṅk) to بَین٘کوں (ba͠ikõ)
The aspirate 'he' (i.e. do-chashme-he, ھ (h)) does NOT need ANY DIACRITICS in ANY CIRCUMSTANCES, all diacritics should either go on the previous letter or on the following letter.
The module will work regardless but based on common practice putting a vowel on the aspirate ھ would be inappropriate.
The Tashdeed/Shadda works with another diacritic, as well as alone
The Sukoon/Jazm diacritic is required for consonant clusters, or else the module will return NIL

Updates

To do

~~require an initial alif to be paired to a vowel (either a diacritic or vao/ye).~~ ^{needed to prevent false positives}
support for al- assimilation in Arabic loanwords.
- how will we distinguish an initial al- in non arabic words? This is probably impossible and might not happen.
~~DIFFERENCE BETWEEN ṇ, ṅ, ñ AND n .~~
~~Detect when transliteration is needed and when not (i.e. if diacritics are present/needed or not)~~
~~izafa/ezafe support~~
~~Revert the module to transliterate initial "ای" as 'ē'~~
~~اَللہ = sort out ہ + khari zabar diacritic~~
~~transliteration detection often gives false positives~~

Example

Test Urdu:

تَرْکِ تَعَلُقّات پِہ رویا نَہ تُو نَہ مَیں لیکِن یِہ کْیا کَہ چَین سے سویا نَہ تُو نَہ مَیں

وُہ ہَمْسَفَر تھا مَگَر اُس سے ہَمْنَوَائی نَہ تھی کَہ دُھوپ چھاؤں کا عالَم رَہا جُدائی نَہ تھی

عَداوَتیں تِھیں، تَغافُل تھا رَنْجِشیں تِھیں مَگَر بِچَھڑْنے والے میں سَب کُچھ تھا بے وَفائی نَہ تھی

کاجَل ڈالو کُرْکُرا سُرْمَہ سَہا نَہ جائے جِن نَین میں پِی بَسے دُوجا کَون سَمائے؟

بِچَھڑْتے وَقْت اُن آن٘کھوں میں تھی ہَماری غَزَل غَزَل تھی وُہ جو کِسی کو کَبھی سُنائی نَہ تھی

Result:

tark-i ta'aluqqāt pe royā na tū na ma͠i lekin ye kyā ka cain se soyā na tū na ma͠i

vo hamsafar thā magar us se hamnavāī na thī ka dhūp chāõ kā 'ālam rahā judāī na thī

'adāvatẽ thī̃, taġāful thā ranjiśẽ thī̃ magar bichaṛne vāle mẽ sab kuch thā be vafāī na thī

kājal ḍālo kurkurā surma sahā na jāe jin nain mẽ pī base dūjā kaun samāe?

bichaṛte vaqt un ā̃khõ mẽ thī hamārī ġazal ġazal thī vo jo kisī ko kabhī sunāī na thī

Expected:

tark-i ta'aluqqāt pe royā na tū na ma͠i lekin ye kyā ka cain se soyā na tū na ma͠i

vo hamsafar thā magar us se hamnavāī na thī ka dhūp chāõ kā 'ālam rahā judāī na thī

'adāvatẽ thī̃, taġāful thā rañjiśẽ thī̃ magar bichaṛne vāle mẽ sab kuch thā be vafāī na thī

kājal ḍālo kurkurā surma sahā na jāe jin nain mẽ pī base dūjā kaun samāe?

bichaṛte vaqt un ā̃khõ mẽ thī hamārī ġazal ġazal thī vo jo kisī ko kabhī sunāī na thī

Test cases

3 tests failed. (refresh)

test_translit_urdu:
လိက်	ဗွဲမရံၚ်လၟဳ	မဇေတ်ဍာံ	ဒၞာဲတၞဟ်ခြာ
اِیرانِی	īrānī	īrānī
ماشاءاَللّٰہ	māśā'allāh	māśā'allāh
پَیدائِش	paidāiś	paidāiś
بَرْقِیات	barqiyāt	barqiyāt
عَقْل	'aql	'aql
عِزَّت	'izzat	'izzat
عَین	'ain	'ain
عالَم	'ālam	'ālam
عَورَت	'aurat	'aurat
شُرُوع	śurū'	śurū'
اِشْعاع	iś'ā'	iś'ā'
تَعَلُّقات	ta'alluqāt	ta'alluqāt
تَعَلُّق	ta'alluq	ta'alluq
مُتَعَلِّق	muta'alliq	muta'alliq
متعلق	(nil)	(nil)	N/A
عُمْر	'umr	'umr
دَفْعَہ	daf'a	daf'a
بَچَّہ	bacca	bacca
قُوَّت	quvvat	quvvat
مَۓ عِشْق	ma-ye 'iśq	ma-ye 'iśq
شیرِ پَن٘جاب	śer-i pañjāb	śer-i pañjāb
مَلْکَۂ دُنْیا	malka-yi dunyā	malka-yi dunyā
جَمُّوں	jammū̃	jammū̃
آم	ām	ām
اِشْتِراکِیَّت	iśtirākiyyat	iśtirākiyyat
سِسَکْنا	sisaknā	sisaknā
پُل	pul	pul
عِیسیٰ	'īsā	'īsā
اَعْلیٰ	a'lā	a'lā
لَفْظ	lafz	lafz
حاضِر	hāzir	hāzir
بَہورا	bahorā	bahorā
نَہِیں	nahī̃	nahī̃
اِشْتِمالِیَت	iśtimāliyat	iśtimāliyat
چَوڑا	cauṛā	cauṛā
تِھیں	thī̃	thī̃
کُتّا	kuttā	kuttā
پَہْلے	pahle	pahle
کِھلائی	khilāī	khilāī
کھلائی	(nil)	(nil)	N/A
ٹَھہَرْنا	ṭhaharnā	ṭhaharnā
تَیمُور	taimūr	taimūr
فَوراً	fauran	fauran
کوئے	koe	koe
مَنَّتوں	mannatõ	mannatõ
گان٘وں	gā̃õ	gā̃õ
مَیں	ma͠i	ma͠i
آئی	āī	āī
مَکَّھن	makkhan	makkhan
خُدا	xudā	xudā
کَئی	kaī	kaī
کُئی	kuī	kuī
چائے	cāe	cāe
کُھلْواؤ	khulvāo	khulvāo
غَدّار	ġaddār	ġaddār
بَیٹھو	baiṭho	baiṭho
بَطَّخ	battax	battax
مُتَّحِدَۂ	muttahida-yi	muttahida-yi
ساؤُتھ اَفْرِیقَہ	sāuth afrīqa	sāuth afrīqa
کُلِّیَّہ	kulliyya	kulliyya
دائِرَۃُ	dāiratu	dāiratu
سُورَۃ	sūra	sūra
بِلّا	billā	billā
دائِرَۃُ الْمَعارِف	dāiratu l-ma'ārif	dāiratu اlma'ārif	9
دائِرَۃْ اُلْمَعارِف	dāirah ulma'ārif	dāirat ulma'ārif	6
آیَتُ اْللّٰہ	āyatu llāh	āyatu llāh
صَیّاد	saiyād	saiyād
گُرْدَہ	gurda	gurda
کہاں	(nil)	khā̃	N/A

--[=[

FIXME:

1. support for Arabic al- (copy from fa-cls-translit)

]=]
local U = require("Module:string/char")
local gsub = mw.ustring.gsub
local export = {}

local fatHataan = U(0x64B)
local zabar = U(0x64E)
local zer = U(0x650)
local pesh = U(0x64F)
local zwnj = U(0x200C) -- Is this even used in Urdu? Why was it included in the previous version?
local highhmz = U(0x654)
local tashdid = U(0x651) -- also called tashdid
local jazm = "ْ"
local he = "ہ"
local ghunna = U(0x658)
local dagger_alif = U(0x670)

local consonants = "ببپتثجچحخدذرزژسشصضطظعغفقکگلࣇمنݨؤڷہئھٹڈڑ"
local consonantS = "ببپتثجچحخدذرزژسشصضطظعغفقکگڷلࣇمنݨہھٹڈڑ"
local consonantS2 = "یببپتثجچحخدذرزژسشصضطظعغفقکگلࣇڷمنݨوؤہھئٹڈڑ" 
local semivowel = "یو"
local vowels = "āایئےۓوؤ"
local indvowels = "آایےوؤ"
local hes = "ہح"
local diacritics = "َُِّْٰ"
local ZZP = "َُِ"
local lrm = U(0x200e) -- left-to-right mark
local rlm = U(0x200f) -- right-to-left mark

local consonants_needing_vowels = "ببپتثجچحخدذرزژسشصضطظعغفقکڷگلࣇمنںݨہئٹڈڑءﷲ"
-- consonants on the right side; includes alif madda
local rconsonants = consonants_needing_vowels .. "ویآ"
-- consonants on the left side; does not include alif madda
local lconsonants = consonants_needing_vowels
local space_like = "%s'" .. '"'
local space_like_class = "[" .. space_like .. "]"

-- not all letters here are used by urdu
local mapping = {
	["آ"] = 'ā', ["ب"] = 'b', ["پ"] = 'p', ["ت"] = 't', ["ٹ"] = 'ṭ', ["ث"] = 's',
	["ج"] = 'j', ["چ"] = 'c', ["ح"] = 'h', ["خ"] = 'x', 
	["د"] = 'd', ["ڈ"] = 'ḍ', ["ذ"] = 'z', ["ر"] = 'r', ['ڑ'] = "ṛ", ["ز"] = 'z', ["ژ"] = 'ź',
	["س"] = 's', ["ش"] = 'ś', ["ص"] = 's', ["ض"] = 'z', 
	["ط"] = 't', ["ظ"] = 'z', ["غ"] = 'ġ', ["ف"] = 'f', ["ق"] = 'q',
	["ک"] = 'k', ["گ"] = 'g', ["ݨ"] = 'ṇ', ["ࣇ"] = 'ḷ', ["ڷ"] = 'ł',
	["ل"] = 'l', ["م"] = 'm', ["ن"] = 'n', ["و"] = 'o', ["ہ"] = 'h', ["ی"] = 'e', ["ے"] = 'e', ["۔"] = ".", ["ں"] = '̃',

	["ھ"] = "h",
	

	["ع"] = '\'',
	["ء"] = '\'',
	["أ"] = '',
	
	-- diacritics
	[zabar] = "a",
	[zer] = "i",
	[pesh] = "u",
	[jazm] = "", -- also sukun - no vowel
	[zwnj] = "-", -- ZWNJ (zero-width non-joiner)
	
	-- ligatures
	["ﻻ"] = "lā",
	["ﷲ"] = "allāh",
	
	-- kashida
	["ـ"] = "-", -- kashida, no sound
	
	-- numerals
	["۱"] = "1", ["۲"] = "2", ["۳"] = "3", ["۴"] = "4", ["۵"] = "5",
	["۶"] = "6", ["۷"] = "7", ["۸"] = "8", ["۹"] = "9", ["۰"] = "0",
	
	-- punctuation (leave on separate lines)
	["؟"] = "?", -- question mark
	["۔"] = ".", -- period
	["،"] = ",", -- comma
	["؛"] = ";", -- semicolon
	["«"] = '“', -- quotation mark
	["»"] = '”', -- quotation mark
	["٪"] = "%", -- percent
	["؉"] = "‰", -- per mille
	["٫"] = ".", -- decimals
	["٬"] = ",", -- thousand
	["ۓ"] = "-ye", 
	[highhmz] = "-yi",
}

local punctuation = "%-:%(%)%[%]*&٫؛؟،ـ«\".\'!»٪؉۔"
local numbers = "۱۲۳۴۵۶۷۸۹۰"

local ain = 'ع'
local alif = 'ا'
local ye = 'ی'
local ye2 = 'ئ'
local ye3 = "ے"
local vao = "و"
local aspirate = 'ھ'
local highhmz = U(0x654)
local aiu = "āīūآ"
local n_exceptions = "[^" .. aiu .. "]" -- for nasalization exceptions

local before_diacritic_checking_subs = {
	------------ transformations prior to checking for diacritics --------------
	{U(0x06E5), "و"},
	{U(0x06E6), "ی"},
	-- ignore dagger alif placed over regular alif or alif maqṣūra
	{"([" .. alif .. ye .. "])" .. dagger_alif, alif},
	{"([^" .. alif .. ye .. "])" .. fatHataan, alif .. fatHataan},
}

local has_diacritics_subs = {
	-- remove arabic ye (ruins conversions)
	{"لل" ..  he , ""},
	{"لل" .. tashdid ..  he , ""},
	{"لل" .. tashdid .. dagger_alif ..  he , ""},
	{"ۃ" , ""},
	-- aspirated consonants should cound as 1 consonant not two
	{"([" .. consonants .. "][".. ZZP .. diacritics .. "?])" ..  aspirate , "%1"},
	{"([" .. consonants .. "])" ..  aspirate , "%1"},
	{ aspirate , ""},
	-- remove punctuation and tashdid
	{"[" .. punctuation .. tashdid .. highhmz .. zwnj .. numbers .. "]", ""},
	-- noon gunna and silent consonants can be removed
	{ ".. [".. ZZP .. indvowels .. diacritics .. "?] .. ([" .. consonantS2 .. "])" .. "([".. ghunna .. jazm .."])" .. "([" .. consonantS2 .. "])"  , ""},
	{ "([" .. consonants .. "])" .. ghunna , ""},
	{ "([" .. consonantS2 .. "])" .. jazm , ""},
	{ "([" .. consonantS2 .. "])" .. "یٰ" , ""},
	-- must go before removing final consonants
	{"[".. ZZP .. diacritics .. "]" .. alif , alif },
	{fatHataan , "" },
	{ "([" .. consonantS2 .. "])" .. "[" .. ZZP .. diacritics .. indvowels .. "?]" .. "([ںۓۂۂ])", "" },
	{ "([ںۓۂۂ])", "" },
	{ "([" .. ye .. alif .. "])" .. dagger_alif, alif},
	{ dagger_alif .. ye , alif},
	{ alif .. "[".. ZZP .. diacritics .. "]" , ""},
	{ "[".. ZZP .. diacritics .. "]" .. alif , alif},
	{ dagger_alif .. "([" .. ye .. alif .. "])", alif},
	-- Remove consonants at end of word or utterance, so that we're OK with
	-- words lacking iʿrāb (must go before removing other consonants).
	-- If you want to catch places without iʿrāb, comment out the next two lines.
	{"[" .. lconsonants .. "]$", ""},
	-- closed consonants
	{"([" .. consonantS2 .. "])[" .. indvowels .. ZZP .. "]", ""},
	-- remove consonants (or alif) when followed by diacritics
	-- must go after removing tashdid
	-- do not remove the diacritics yet because we need them to handle
	-- long-vowel sequences of diacritic + pseudo-consonant
	{"[" .. lconsonants .. alif .. "]([" .. fatHataan .. zabar .. pesh .. zer .. jazm .. dagger_alif .. "])", "%1"},
	-- the following two must go after removing consonants w/diacritics because
	{"([" .. rconsonants .. "])([".. ZZP .. diacritics .. "?][" .. indvowels .. "?])([" .. consonantS2 .. "])", ""},
	{"[" .. indvowels .. "]([" .. rconsonants .. "])", ""},
	{"[".. ZZP .. diacritics .. "]([" .. lconsonants .. "])", ""},
	{"([" .. consonants .. "])[" .. indvowels .. ZZP .. diacritics .. "]", ""},
	{"([" .. rconsonants .. "])(" .. space_like_class .. ")", ""},
	{"[" .. lconsonants .. "]" .. zabar .. "[".. ye .. ye3 .. vao .. "]", ""},
	-- we only want to treat vocalic wāw/yā' in them (we want to have removed
	-- remove vaw
	{ "[" .. lconsonants .. "]" .. vao, ""},
	{"ؤ" .. pesh , ""},
	{"ؤ", ""},
	-- remove ye
	{ "[" .. lconsonants .. "]" .. ye, ""},
	{ye3, ""},
	{"([" .. consonants .. "][" .. ZZP .. "])" .. he,""},
	-- remove fatḥa/fatḥatan + alif/alif-maqṣūra
	{"[" .. fatHataan .. zabar .. "][" .. alif .. ye .. "]", ""},
	-- remove diacritics and independant vowels
	{"[" .. fatHataan .. zabar .. pesh .. zer .. jazm .. dagger_alif .. "]", ""},
	{ "[" .. indvowels .. "]" , ""},
	{ "[".. semivowel .."]" .. "[" .. indvowels .. "]" , ""},
	-- remove numbers, hamzatu l-waṣl, alif madda
	{"[" .. numbers .. "ٱ" .. "آ" .. "]", ""},
	{"%s", ""},
}

-- declared as local above
local function has_diacritics(text)
	local count
	text, count = gsub(text, "[" .. lrm .. rlm .. "]", "")
	if count > 0 then
		require("Module:debug").track("ur-translit/lrm or rlm")
	end
	for _, sub in ipairs(has_diacritics_subs) do
		text = gsub(text, unpack(sub))
	end
	return #text == 0
end

function export.tr(text, lang, sc)
	if type(text) == "table" then
		local function f(x) return (x ~= "") and x or nil end
		text, lang, sc, omit_i3raab, force_translit =
			f(text.args[1]), f(text.args[2]), f(text.args[3]), f(text.args[4]), f(text.args[5])
	end
	for _, sub in ipairs(before_diacritic_checking_subs) do
		text = gsub(text, sub[1], sub[2])
	end

	if not force_translit and not has_diacritics(text) then
		require("Module:debug").track("ur-translit/lacking diacritics")
		return nil
	end
	
	--define the "end" of a word
	text = gsub(text, "#", "HASHTAG")
	text = gsub(text, " | ", "# | #")
	text = gsub(text, "\n" , "#".."\n" .. "#")
	text = gsub(text, "(["..punctuation.."])" , "#".."%1" .. "#")
	text = "##" .. gsub(text, " ", "# #") .. "##"
	text = gsub(text, zwnj, "#"..zwnj.."#")
	-- hastags now mark the beginning and end of a word
	
	--exceptions
	text = gsub(text, "#" .. vao .. he .. "#", "#vo#")
	text = gsub(text, "#" .. vao .. pesh .. he .. "#", "#vo#")
	text = gsub(text, "#" .. "پ" .. he .. "#", "#pe#")
	text = gsub(text, "#" .. "پ" .. zer .. he .. "#", "#pe#")
	text = gsub(text, "#" .. ye .. he .. "#", "#ye#")
	text = gsub(text, "#" .. ye .. zer .. he .. "#", "#ye#")
	
	--character reformatting
	--to make an exceptions for a word, put hashtags on both sides
	text = gsub(text, "ۂ", he .. highhmz)
	text = gsub(text, highhmz, "#"..highhmz.."#")
	--text = gsub(text, 'ىٰ', "ā") -- the first letter is U+0649 (Arabic alif maqṣūra), it doesn't belong here
	text = gsub(text, 'یٰ', "ā") -- the first letter is U+06CC
	text = gsub(text, 'ٰ', "ā")
	text = gsub(text, 'ا' .. fatHataan, "an")
	text = gsub(text, 'لا', "ﻻ")
	text = gsub(text, "ة" 	, "ۃ")
	text = gsub(text, "ۃ" .. "([" .. ZZP .. jazm .. "])", "ت%1")
	text = gsub(text, "ۃ" , he)
	
	-- Tashdeed
	text = gsub(text, '([' .. consonantS2 .. '])' .. tashdid, "%1%1")
	text = gsub(text, '([' .. consonantS2 .. '])' .. tashdid .. '([' .. ZZP .. '])', "%1%1%2")
	-- For some reason the tashdeed gets pushed after the other diacritics, so this line is necessary for tashdeed to work with other diacritics
	text = gsub(text, '([' .. consonants .. '])' .. '([' .. ZZP .. '])' .. tashdid, "%1%1%2")
	text = gsub(text, '([' .. ZZP .. '])' .. aspirate, aspirate.."%1") 
	text = gsub(text, dagger_alif .. aspirate, aspirate.."%1")
	text = gsub(text, ye .. '([' .. ZZP .. '])' .. tashdid, "yy%1")
	text = gsub(text,  vao .. '([' .. ZZP .. '])' .. tashdid, "vv%1")
	text = gsub(text, ye .. tashdid .. '([' .. ZZP .. '])', "yy%1")
	text = gsub(text, vao .. tashdid .. '([' .. ZZP .. '])', "vv%1")
	

    --initial alif
    text = gsub(text, pesh .. vao .. alif, "uā")
    text = gsub(text, "(["..consonantS2.."])" .. alif, "%1ā") 
    --alifs paired to a consonant are a vowel
    text = gsub(text, jazm .. alif, "-") -- invisible ZWNJ
    text = gsub(text, jazm .. "آ", "-ā") -- invisible ZWNJ
    text = gsub(text, "(["..consonantS2.."])" .. "آ", "%1'ā") 
    	text = gsub(text, pesh .. vao .. zabar .. alif , "ūā" )
    text = gsub(text, zabar .. alif, "ā")
    text = gsub(text, "(" .. ghunna .. ")" .. alif, "%1ā")
    text = gsub(text, "(["..diacritics.."])" .. alif, "%1")
    text = gsub(text, "(["..ZZP.."])" .. alif, "%1")
    --alifs not paired to a consonant are a glottal stop (not shown currently)
    text = gsub(text, alif.."(["..diacritics.."])".. "(["..consonantS2.."])", "%1%2")
    text = gsub(text, alif..ye.."#", "ī")
    text = gsub(text, alif..ye, "e")
    text = gsub(text, alif..ye3, "e")
    text = gsub(text, alif..zabar..ye3, "ai")
    text = gsub(text, alif..vao, "o")
    text = gsub(text, alif..zer..ye, "ī")
    text = gsub(text, alif..pesh..vao, "ū")
    text = gsub(text, alif.."(["..diacritics.."])", "%1")
    
    
    -- convert semi vowels
    text = gsub(text, vao.. "(["..diacritics..ZZP.."])", "v%1")
    text = gsub(text, ye.. "(["..diacritics..ZZP.."])", "y%1")
    text = gsub(text, ye .. "ā", "yā")
    text = gsub(text, vao.. "ā", "vā")
    text = gsub(text, ye .. "(["..zabar.."]?)" .. ye3, "y%1"..ye3.."")
    text = gsub(text, vao .. "(["..zabar.."]?)" .. ye3, "v%1"..ye3.."")
    text = gsub(text, ye .. "(["..semivowel.."])(["..semivowel.."])", "e%1%2")
    text = gsub(text, vao .. "(["..semivowel.."])(["..semivowel.."])", "o%1%2")
    text = gsub(text, ye .. "(["..semivowel.."])", "y%1")
    text = gsub(text, vao .. "(["..semivowel.."])", "v%1")
    
    -- conversions for vaav/vaw/vao
    text = gsub(text, pesh.. vao, "ū")
    text = gsub(text, zabar .. vao, "au")
    text = gsub(text, vao.. "(["..diacritics..ZZP.."])", "v%1")
    text = gsub(text, "(["..diacritics..ZZP.."])" .. vao, "%1v")
    -- conversions for ye
    text = gsub(text, zer.. ye, "ī")
    text = gsub(text, ye .. "#", "ī#")
    text = gsub(text, zabar.. ye, "ai")
    text = gsub(text, zabar.. ye3, "ai")
    text = gsub(text, ye .. "(["..diacritics..ZZP.."])", "y%1")
    text = gsub(text, "(["..diacritics..ZZP.."])" .. ye , "%1y")
    
    -- final he and izafa/ezafe
    text = gsub(text, "e" .. zer .. "#", "e-yi#")
    text = gsub(text, "ī" .. zer .. "#", "ī-yi#")
    text = gsub(text, "y" .. zer .. "#", "-yi#")
    text = gsub(text, zer .. "#", "-i#")
    text = gsub(text, "(["..ZZP.."])" .. he .. "#" .. zwnj, "%1-")
    text = gsub(text, "(["..ZZP.."])" .. he .. "#", "%1#")
    text = gsub(text, zabar .. he .. "#", "a#")
    
    -- noon ghunna assimilation/nasalization
    --remove impossible nasal vowels
    text = gsub(text, "ن" .. ghunna .. "([ب])", "m%1") -- nasal vowels are impossible before b
    text = gsub(text, "ن" .. ghunna .. "ت" .. aspirate, "nth") 
    text = gsub(text, "ن" .. ghunna .. "([قگ])",	"ṅ%1") -- impossible before q and g
    text = gsub(text, "(" .. n_exceptions .. ")" .. "ن" .. ghunna .. "ٹ"	.. aspirate	, "%1ṇṭh")
    text = gsub(text, "(" .. n_exceptions .. ")" .. "ن" .. ghunna .. "پ" .. aspirate, "%1mph")
    text = gsub(text, "(" .. n_exceptions .. ")" .. "ن" .. ghunna .. "ک" .. aspirate, "%1ṅkh")
    text = gsub(text, "ن" .. ghunna .. "([ج])", "ñ%1") -- impossible before j
    text = gsub(text, "ن".. ghunna .. "ڈ" .. aspirate, "ṇḍh") -- aspirated d/D cant be nasalized
    text = gsub(text, "ن".. ghunna .. "د" .. aspirate, "ndh") -- aspirated d/D cant be nasalized
    --other nasals
    text = gsub(text, "ن" .. jazm .. "([کگق])" .. "#",	"ṅ%1#")
    text = gsub(text, "ن" .. ghunna .. "([کگق])" .. jazm .. "#",	"ṅ%1#")
	text = gsub(text, "ن" .. jazm .. "([دتر])", "n%1") -- dental
	text = gsub(text, "ن" .. ghunna .. "([ٹڈ])" .. jazm .. "#", "ṇ%1#")
	text = gsub(text, "ن" .. ghunna .. "([چج])" .. jazm .. "#", "ñ%1#") -- postalveolar
	text = gsub(text, "ن" .. ghunna .. "([چج]".. aspirate ..")" .. jazm .. "#", "ñ%1#") 
	-- if noon ghunna cannot assimilate, it becomes a nasal vowel.
	text = gsub(text, "ن" .. ghunna, "ں")
	text = gsub(text, "ؤ" .. pesh .. "ں" .. "#", ye2 .. "ū" .. "ں" .. "#")
    
    -- get rid of hashtags (not needed)
    text = gsub(text, "#", "")
    text = gsub(text, "HASHTAG", "#")
    text = string.gsub(text, lrm, "")
	text = string.gsub(text, rlm, "")
    -- convert all characters
    text = gsub(text, '.', mapping)
    
    -- vowel fixes
    -- nasalized dipthongs
    text = gsub(text, 'a([iu])̃', 'a͠%1')
	
	-- alif
	-- Final corrections
	text = gsub(text, "lll", "ll")
	text = gsub(text, "āa", "ā")
	text = gsub(text, "aaa", "ā")
	text = gsub(text, "āā", "ā")
	text = gsub(text, "aa", "ā")
	
	--now get rid of the zero consonants
	text = gsub(text, "ئ", "")
	text = gsub(text, "u" .. "ؤ" , "u")
	text = gsub(text, "ؤ" .. "u" .. "$", "ū")  -- ؤُ is rendered 'ū' word-finally, short 'u' otherwise
	text = gsub(text, "ؤ" .. "u" .. "([ ,.;?!-])", "ū%1")
	text = gsub(text, "ؤ" .. "u" , "u")
	text = gsub(text, "ؤ", "o")
	
	text = mw.ustring.toNFC(text)
	
	return text
end

return export