Module:ar-verb

local export = {}

local m_links = require("Module:links") local m_str_utils = require("Module:string utilities") local m_table = require("Module:table") local ar_utilities = require("Module:ar-utilities") local ar_nominals = require("Module:ar-nominals")

local lang = require("Module:languages").getByCode("ar") local yesno = require("Module:yesno")

--[[

Author: User:Benwing, from early version by User:Atitarev, User:ZxxZxxZ

Todo:

1. Finish unimplemented conjugation types. Only IX-final-weak left (extremely  rare, possibly only one verb اِعْمَايَ (according to Haywood and Nahmad p. 244, who are very specific about the irregular occurrence of alif + yā instead of expected اِعْمَيَّ with doubled yā). Not in Hans Wehr. 2. Implement irregular verbs as special cases and recognize them, e.g.  -- laysa "to not be"; only exists in the past tense, no non-past, no	  imperative, no participles, no passive, no verbal noun. Irregular	  alternation las-/lays-.   -- istaḥā yastaḥī "be ashamed of" -- this is complex according to Hans Wehr	  because there are two verbs, regular istaḥyā yastaḥyī "to spare	  (someone)'s life" and irregular istaḥyā yastaḥyī "to be ashamed to face	  (someone)", which is irregular because it has the alternate irregular	  form istaḥā yastaḥī which only applies to this meaning. Currently we	  follow Haywood and Nahmad in saying that both varieties can be spelled	  istaḥyā/istaḥā/istaḥḥā, but we should instead use a variant= param	  similar to حَيَّ to distinguish the two possibilities, and maybe not	  include istaḥḥā.   -- ʿayya/ʿayiya yaʿayyu/yaʿyā "to not find the right way, be incapable of, stammer, falter, fall ill". This appears to be a mixture of a geminate	 and final-weak verb. Unclear what the whole paradigm looks like. Do	  the consonant-ending parts in the past follow the final-weak paradigm?	  Is it the same in the non-past? Or can you conjugate the non-past	  fully as either geminate or final-weak?   -- اِنْمَحَى inmaḥā or يمَّحَى immaḥā "to be effaced, obliterated; to disappear, vanish"	  has irregular assimilation of inm- to imm- as an alternative. inmalasa	  "to become smooth; to glide; to slip away; to escape" also has immalasa	  as an alternative. The only other form VII verbs in Hans Wehr beginning	  with -m- are inmalaḵa "to be pulled out, torn out, wrenched" and inmāʿa	  "to be melted, to melt, to dissolve", which are not listed with imm-	  alternatives, but might have them; if so, we should handle this generally. 3. Implement individual override parameters for each pardigm part. See Module:fro-verb for an example of how to do this generally. Note that and other of the older templates already had such individual override params.

Irregular verbs already implemented:

-- [ḥayya/ḥayiya yaḥyā "live" -- behaves like a normal final-weak verb (e.g. past first singular ḥayītu) except in the past-tense parts with vowel-initial endings (all the third person except for the third feminine	 plural). The normal singular and dual endings have -yiya- in them, which compresses to -yya-, with the normal endings the less preferred ones. In masculine third plural, expected ḥayū is replaced by ḥayyū by	 analogy to the -yy- parts, and the regular form is not given as an alternant in John Mace. Barron's 201 verbs appears to have the regular ḥayū as the part, however. Note also that final -yā appears with tall alif. This appears to be a spelling convention of Arabic, also applying in ḥayyā (form II, "to keep (someone) alive") and 'aḥyā (form IV,	 "to animate, revive, give birth to, give new life to").] -- implemented -- [ittaxadha yattaxidhu "take"] -- implemented -- [sa'ala yas'alu "ask" with alternative jussive/imperative yasal/sal] -- implemented -- [ra'ā yarā "see"] -- implemented -- ['arā yurī "show"] -- implemented -- ['akala ya'kulu "eat" with imperative kul] -- implemented -- ['axadha ya'xudhu "take" with imperative xudh] -- implemented -- ['amara ya'muru "order" with imperative mur] -- implemented

--]]

local curtitle = mw.title.getCurrentTitle.fullText

local rfind = m_str_utils.find local rsubn = m_str_utils.gsub local rmatch = m_str_utils.match local rsplit = m_str_utils.split local usub = m_str_utils.sub local ulen = m_str_utils.len local u = m_str_utils.char

-- don't display i3rab in nominal forms (verbal nouns, participles) local no_nominal_i3rab = true

-- Within this module, conjugations are the functions that do the actual -- conjugating by creating the parts of a basic verb. -- They are defined further down. local conjugations = {} -- hamza variants local HAMZA           = u(0x0621) -- hamza on the line (stand-alone hamza) = ء local HAMZA_ON_ALIF   = u(0x0623) local HAMZA_ON_W      = u(0x0624) local HAMZA_UNDER_ALIF = u(0x0625) local HAMZA_ON_Y      = u(0x0626) local HAMZA_ANY       = "[" .. HAMZA .. HAMZA_ON_ALIF .. HAMZA_UNDER_ALIF .. HAMZA_ON_W .. HAMZA_ON_Y .. "]" local HAMZA_PH        = u(0xFFF0) -- hamza placeholder

-- diacritics local A = u(0x064E) -- fatḥa local AN = u(0x064B) -- fatḥatān (fatḥa tanwīn) local U = u(0x064F) -- ḍamma local UN = u(0x064C) -- ḍammatān (ḍamma tanwīn) local I = u(0x0650) -- kasra local IN = u(0x064D) -- kasratān (kasra tanwīn) local SK = u(0x0652) -- sukūn = no vowel local SH = u(0x0651) -- šadda = gemination of consonants local DAGGER_ALIF = u(0x0670) local DIACRITIC_ANY_BUT_SH = "[" .. A .. I .. U .. AN .. IN .. UN .. SK .. DAGGER_ALIF .. "]" -- Pattern matching short vowels local AIU = "[" .. A .. I .. U .. "]" -- Pattern matching short vowels or sukūn local AIUSK = "[" .. A .. I .. U .. SK .. "]" -- Pattern matching any diacritics that may be on a consonant local DIACRITIC = SH .. "?" .. DIACRITIC_ANY_BUT_SH -- Suppressed UN; we don't show -un i3rab any more, but this can be changed to show it local UNS = no_nominal_i3rab and "" or UN

local dia = {a = A, i = I, u = U}

-- various letters and signs local ALIF  = u(0x0627) -- ʾalif = ا local AMAQ  = u(0x0649) -- ʾalif maqṣūra = ى local AMAD  = u(0x0622) -- ʾalif madda = آ local TAM   = u(0x0629) -- tāʾ marbūṭa = ة local T     = u(0x062A) -- tāʾ = ت local HYPHEN = u(0x0640) local N     = u(0x0646) -- nūn = ن local W     = u(0x0648) -- wāw = و local Y     = u(0x064A) -- yā = ي local S     = "س" local M     = "م" local LRM   = u(0x200e) -- left-to-right mark

-- common combinations local AH   = A .. TAM local AT   = A .. T local AA   = A .. ALIF local AAMAQ = A .. AMAQ local AAH  = AA .. TAM local AAT  = AA .. T local II   = I .. Y local IY   = II local UU    = U .. W local AY   = A .. Y local AW   = A .. W local AYSK = AY .. SK local AWSK = AW .. SK local NA   = N .. A local NI   = N .. I local AAN  = AA .. N local AANI = AA .. NI local AYNI = AYSK .. NI local AWNA = AWSK .. NA local AYNA = AYSK .. NA local AYAAT = AY .. AAT local UNU  = "[" .. UN .. U .. "]" local MA   = M .. A local MU   = M .. U

--- --                               Utility functions                          -- ---

-- version of rsubn that discards all but the first return value local function rsub(term, foo, bar) return (rsubn(term, foo, bar)) end

local function links(text, face, id) if text == "" or text == "?" or text == "&mdash;" or text == "—" then --mdash return text else return m_links.full_link({lang = lang, term = text, tr = "-", id = id}, face) end end

local function tag_text(text, tag, class) return m_links.full_link({lang = lang, alt = text, tr = "-"}) end

local function track(page) require("Module:debug/track")("ar-verb/" .. page) return true end

local function reorder_shadda(word) -- shadda+short-vowel (including tanwīn vowels, i.e. -an -in -un) gets -- replaced with short-vowel+shadda during NFC normalisation, which -- MediaWiki does for all Unicode strings; however, it makes various -- processes inconvenient, so undo it. word = rsub(word, "(" .. DIACRITIC_ANY_BUT_SH .. ")" .. SH, SH .. "%1") return word end

-- synthesize a frame so that exported functions meant to be called from -- templates can be called from the debug console. local function debug_frame(parargs, args) return {args = args, getParent = function return {args = parargs} end} end

--- --                     Properties of different verbal forms                 -- ---

-- no longer supported --local numeric_to_roman_form = { --	["1"] = "I", ["2"] = "II", ["3"] = "III", ["4"] = "IV", ["5"] = "V", --	["6"] = "VI", ["7"] = "VII", ["8"] = "VIII", ["9"] = "IX", ["10"] = "X", --	["11"] = "XI", ["12"] = "XII", ["13"] = "XIII", ["14"] = "XIV", ["15"] = "XV", --	["1q"] = "Iq", ["2q"] = "IIq", ["3q"] = "IIIq", ["4q"] = "IVq" --} -- convert numeric form to roman-numeral form --local function canonicalize_form(form) --	return numeric_to_roman_form[form] or form --end

local allowed_forms = {"I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX", "X", "XI", "XII", "XIII", "XIV", "XV", "Iq", "IIq", "IIIq", "IVq"}

local function form_supports_final_weak(form) return form ~= "XI" and form ~= "XV" and form ~= "IVq" end

local function form_supports_geminate(form) return form == "I" or form == "III" or form == "IV" or		form == "VI" or form == "VII" or form == "VIII" or form == "X" end

local function form_supports_hollow(form) return form == "I" or form == "IV" or form == "VII" or form == "VIII" or		form == "X" end

local function form_probably_impersonal_passive(form) return form == "VI" end

local function form_probably_no_passive(form, weakness, past_vowel, nonpast_vowel) return form == "I" and weakness ~= "hollow" and m_table.contains(past_vowel, "u") or		form == "VII" or form == "IX" or form == "XI" or form == "XII" or		form == "XIII" or form == "XIV" or form == "XV" or form == "IIq" or		form == "IIIq" or form == "IVq" end

local function form_is_quadriliteral(form) return form == "Iq" or form == "IIq" or form == "IIIq" or form == "IVq" end

-- Active forms II, III, IV, Iq use non-past prefixes in -u- instead of -a-. local function prefix_vowel_from_form(form) if form == "II" or form == "III" or form == "IV" or form == "Iq" then return "u" else return "a" end end

-- true if the active non-past takes a-vowelling rather than i-vowelling -- in its last syllable local function form_nonpast_a_vowel(form) return form == "V" or form == "VI" or form == "XV" or form == "IIq" end

--- --             Radicals associated with various irregular verbs             -- ---

-- Form-I verb أخذ or form-VIII verb اتخذ local function axadh_radicals(rad1, rad2, rad3) return rad1 == HAMZA and rad2 == "خ" and rad3 == "ذ" end

-- Form-I verb whose imperative has a reduced form: أكل and أخذ and أمر local function reduced_imperative_verb(rad1, rad2, rad3) return axadh_radicals(rad1, rad2, rad3) or rad1 == HAMZA and (		rad2 == "ك" and rad3 == "ل" or		rad2 == "م" and rad3 == "ر") end

-- Form-I verb رأى and form-IV verb أرى local function raa_radicals(rad1, rad2, rad3) return rad1 == "ر" and rad2 == HAMZA and rad3 == Y end

-- Form-I verb سأل local function saal_radicals(rad1, rad2, rad3) return rad1 == "س" and rad2 == HAMZA and rad3 == "ل" end

-- Form-I verb حيّ or حيي and form-X verb استحيا or استحى local function hayy_radicals(rad1, rad2, rad3) return rad1 == "ح" and rad2 == Y and rad3 == Y end

--- --                              Sets of past endings                        -- ---

-- the 13 endings of the sound/hollow/geminate past tense local past_endings = { -- singular SK .. "تُ", SK .. "تَ", SK .. "تِ", A, A .. "تْ", --dual SK .. "تُمَا", AA, A .. "تَا", -- plural SK .. "نَا", SK .. "تُمْ", -- two Arabic diacritics don't work together in Wikimedia --SK .. "تُنَّ", SK .. "تُن" .. SH .. A, UU .. ALIF, SK .. "نَ" }

-- make endings for final-weak past in -aytu or -awtu. AYAW is AY or AW -- as appropriate. Note that AA and AW are global variables. local function make_past_endings_ay_aw(ayaw, third_sg_masc) return { -- singular ayaw .. SK .. "تُ", ayaw .. SK .. "تَ", ayaw .. SK .. "تِ", third_sg_masc, A .. "تْ", --dual ayaw .. SK .. "تُمَا", ayaw .. AA, A .. "تَا", -- plural ayaw .. SK .. "نَا", ayaw .. SK .. "تُمْ", -- two Arabic diacritics don't work together in Wikimedia --ayaw .. SK .. "تُنَّ", ayaw .. SK .. "تُن" .. SH .. A, AW .. SK .. ALIF, ayaw .. SK .. "نَ" } end

-- past final-weak -aytu endings local past_endings_ay = make_past_endings_ay_aw(AY, AAMAQ) -- past final-weak -awtu endings local past_endings_aw = make_past_endings_ay_aw(AW, AA)

-- Make endings for final-weak past in -ītu or -ūtu. IIUU is ī or ū as -- appropriate. Note that AA and UU are global variables. local function make_past_endings_ii_uu(iiuu) return { -- singular iiuu .. "تُ", iiuu .. "تَ", iiuu .. "تِ", iiuu .. A, iiuu .. A .. "تْ", --dual iiuu .. "تُمَا", iiuu .. AA, iiuu .. A .. "تَا", -- plural iiuu .. "نَا", iiuu .. "تُمْ", -- two Arabic diacritics don't work together in Wikimedia --iiuu .. "تُنَّ", iiuu .. "تُن" .. SH .. A, UU .. ALIF, iiuu .. "نَ" } end

-- past final-weak -ītu endings local past_endings_ii = make_past_endings_ii_uu(II) -- past final-weak -ūtu endings local past_endings_uu = make_past_endings_ii_uu(UU)

--- --                   Sets of non-past prefixes and endings                  -- ---

-- prefixes for non-past forms in -a- local nonpast_prefixes_a = { -- singular HAMZA .. A, "تَ", "تَ", "يَ", "تَ", --dual "تَ", "يَ", "تَ", -- plural "نَ", "تَ", "تَ", "يَ", "يَ" }

-- prefixes for non-past forms in -u- (passive; active forms II, III, IV, Iq) local nonpast_prefixes_u = { -- singular HAMZA .. U, "تُ", "تُ", "يُ", "تُ", --dual "تُ", "يُ", "تُ", -- plural "نُ", "تُ", "تُ", "يُ", "يُ" }

-- There are only five distinct endings in all non-past verbs. Make any set of -- non-past endings given these five distinct endings. local function make_nonpast_endings(null, fem, dual, pl, fempl) return { -- singular null, null, fem, null, null, -- dual dual, dual, dual, -- plural null, pl, fempl, pl, fempl } end

-- endings for non-past indicative local indic_endings = make_nonpast_endings(	U,	II .. NA,	AANI,	UU .. NA,	SK .. NA )

-- make the endings for non-past subjunctive/jussive, given the vowel diacritic -- used in "null" endings (1s/2sm/3sm/3sf/1p) local function make_subj_juss_endings(dia_null) return make_nonpast_endings(	dia_null,	II,	AA,	UU .. ALIF,	SK .. NA	) end

-- endings for non-past subjunctive local subj_endings = make_subj_juss_endings(A)

-- endings for non-past jussive local juss_endings = make_subj_juss_endings(SK)

-- endings for alternative geminate non-past jussive in -a; same as subjunctive local juss_endings_alt_a = subj_endings

-- endings for alternative geminate non-past jussive in -i local juss_endings_alt_i = make_subj_juss_endings(I)

-- endings for final-weak non-past indicative in -ā. Note that AY, AW and -- AAMAQ are global variables. local indic_endings_aa = make_nonpast_endings(	AAMAQ,	AYSK .. NA,	AY .. AANI,	AWSK .. NA,	AYSK .. NA )

-- make endings for final-weak non-past indicative in -ī or -ū; IIUU is -- ī or ū as appropriate. Note that II and UU are global variables. local function make_indic_endings_ii_uu(iiuu) return make_nonpast_endings(	iiuu,	II .. NA,	iiuu .. AANI,	UU .. NA,	iiuu .. NA	) end

-- endings for final-weak non-past indicative in -ī local indic_endings_ii = make_indic_endings_ii_uu(II)

-- endings for final-weak non-past indicative in -ū local indic_endings_uu = make_indic_endings_ii_uu(UU)

-- endings for final-weak non-past subjunctive in -ā. Note that AY, AW, ALIF, -- AAMAQ are global variables. local subj_endings_aa = make_nonpast_endings(	AAMAQ,	AYSK,	AY .. AA,	AWSK .. ALIF,	AYSK .. NA )

-- make endings for final-weak non-past subjunctive in -ī or -ū. IIUU is -- ī or ū as appropriate. Note that AA, II, UU, ALIF are global variables. local function make_subj_endings_ii_uu(iiuu) return make_nonpast_endings(	iiuu .. A,	II,	iiuu .. AA,	UU .. ALIF,	iiuu .. NA	) end

-- endings for final-weak non-past subjunctive in -ī local subj_endings_ii = make_subj_endings_ii_uu(II)

-- endings for final-weak non-past subjunctive in -ū local subj_endings_uu = make_subj_endings_ii_uu(UU)

-- endings for final-weak non-past jussive in -ā local juss_endings_aa = make_nonpast_endings(	A,	AYSK,	AY .. AA,	AWSK .. ALIF,	AYSK .. NA )

-- Make endings for final-weak non-past jussive in -ī or -ū. IU is short i or u, -- IIUU is long ī or ū as appropriate. Note that AA, II, UU, ALIF are global -- variables. local function make_juss_endings_ii_uu(iu, iiuu) return make_nonpast_endings(	iu,	II,	iiuu .. AA,	UU .. ALIF,	iiuu .. NA	) end

-- endings for final-weak non-past jussive in -ī local juss_endings_ii = make_juss_endings_ii_uu(I, II)

-- endings for final-weak non-past jussive in -ū local juss_endings_uu = make_juss_endings_ii_uu(U, UU)

--- --                          Sets of imperative endings                      -- ---

-- extract the second person jussive endings to get corresponding imperative -- endings local function imperative_endings_from_jussive(endings) return {endings[2], endings[3], endings[6], endings[10], endings[11]} end

-- normal imperative endings local impr_endings = imperative_endings_from_jussive(juss_endings) -- alternative geminate imperative endings in -a local impr_endings_alt_a = imperative_endings_from_jussive(juss_endings_alt_a) -- alternative geminate imperative endings in -i local impr_endings_alt_i = imperative_endings_from_jussive(juss_endings_alt_i) -- final-weak imperative endings in -ā local impr_endings_aa = imperative_endings_from_jussive(juss_endings_aa) -- final-weak imperative endings in -ī local impr_endings_ii = imperative_endings_from_jussive(juss_endings_ii) -- final-weak imperative endings in -ū local impr_endings_uu = imperative_endings_from_jussive(juss_endings_uu)

--- --                       Properties of specific sounds                      -- ---

-- Check that the past or non-past vowel is a, i, or u. VOWEL is the vowel to -- check and VTYPE indicates whether it's past or non-past and is used in -- the error message. local function check_aiu(vtype, vowel) if vowel ~= "a" and vowel ~= "i" and vowel ~= "u" then error(vtype .. " vowel '" .. vowel .. "' should be a, i, or u") end end

-- Is radical wāw (و) or yāʾ (ي)? local function is_waw_ya(rad) return rad == W or rad == Y end

-- Check that radical is wāw (و) or yāʾ (ي), error if not local function check_waw_ya(rad) if not is_waw_ya(rad) then error("Expecting weak radical: '" .. rad .. "' should be " .. W .. " or " .. Y)	end end

-- Is radical guttural? This favors a non-past vowel of "a" local function is_guttural(rad) return rad == HAMZA or rad == "ه" or rad == "ع" or rad == "ح" end

--- --                       Basic functions to inflect tenses                  -- ---

-- Implementation of inflect_tense. See that function. Also used directly -- to add the imperative, which has only five parts. local function inflect_tense_1(data, tense, prefixes, stems, endings, pnums) if prefixes == nil then error("For tense '" .. tense .. "', prefixes = nil") end if stems == nil then error("For tense '" .. tense .. "', stems = nil") end if endings == nil then error("For tense '" .. tense .. "', endings = nil") end if type(prefixes) == "table" and #pnums ~= #prefixes then error("For tense '" .. tense .. "', found " .. #prefixes .. " prefixes but expected " .. #pnums) end if type(stems) == "table" and #pnums ~= #stems then error("For tense '" .. tense .. "', found " .. #stems .. " stems but expected " .. #pnums) end if #pnums ~= #endings then error("For tense '" .. tense .. "', found " .. #endings .. " endings but expected " .. #pnums) end

-- First, initialize any nil entries to sequences. for i, pnum in ipairs(pnums) do if data.forms[pnum .. "-" .. tense] == nil then data.forms[pnum .. "-" .. tense] = {} end end

-- Now add entries for i = 1, #pnums do		-- Extract endings for this person-number combo local ends = endings[i] if type(ends) == "string" then ends = {ends} end -- Extract prefix for this person-number combo local prefix = prefixes if type(prefix) == "table" then prefix = prefix[i] end -- Extract stem for this person-number combo local stem = stems if type(stem) == "table" then stem = stem[i] end -- Add entries for stem + endings for j, ending in ipairs(ends) do			-- allow some inflections to be skipped; useful for generating -- partly irregular inflections if prefix ~= "-" and stem ~= "-" then local part = prefix .. stem .. ending if part ~= "" and part ~= "-" -- and (not data.impers or pnums[i] == "3sg") then table.insert(data.forms[pnums[i] .. "-" .. tense], part) end end end end end

-- Add to DATA the inflections for the tense indicated by TENSE (the suffix -- in the forms names, e.g. 'perf'), formed by combining the PREFIXES -- (either a single string or a sequence of 13 strings), STEMS -- (either a single string or a sequence of 13 strings) with the -- ENDINGS (a sequence of 13 values, each of which is either a string -- or a sequence of one or more possible endings). If existing -- inflections already exist, they will be added to, not overridden. -- If any value of PREFIXES or STEMS is the string "-", then the corresponding -- inflection will be skipped. local function inflect_tense(data, tense, prefixes, stems, endings) local pnums = {"1s", "2sm", "2sf", "3sm", "3sf", "2d", "3dm", "3df", "1p", "2pm", "2pf", "3pm", "3pf"} inflect_tense_1(data, tense, prefixes, stems, endings, pnums) end

-- Like inflect_tense but for the imperative, which has only five parts -- instead of 13. local function inflect_tense_impr(data, stems, endings) local pnums = {"2sm", "2sf", "2d", "2pm", "2pf"} if data.noimp then endings = {{}, {}, {}, {}, {}} end inflect_tense_1(data, "impr", "", stems, endings, pnums) end

-- Add VALUE (a string or array) to the end of any entries in DATA.forms[NAME], -- initializing it to an empty array if needed. local function insert_part(data, name, value) if data.forms[name] == nil then data.forms[name] = {} end if type(value) == "table" then data.forms[name] = value else table.insert(data.forms[name], value) end end

-- Insert verbal noun VN into DATA.forms["vn"], but allow it to be overridden by -- ARGS["vn"]. local function insert_verbal_noun(data, args, vn) local vns = args["vn"] and rsplit(args["vn"], "[,،]") or vn	if type(vns) ~= "table" then vns = {vns} end vns.ids = {} for i = 1, #vns do local id = args["vn-id" .. i]		if id then vns.ids[i] = id		end end

Begin verbal-noun i3rab tracking code --- -- Examples of what you can find by looking at what links to the given -- pages: --	-- Wiktionary:Tracking/ar-verb/vn/i3rab/un (pages with verbal nouns with -un	--  i3rab, whether explicitly specified, i.e. using vn=, or auto-generated,	--   as is normal for augmented forms) -- Wiktionary:Tracking/ar-verb/explicit-vn/i3rab/u (pages with explicitly	--  specified verbal nouns with -u i3rab) -- Wiktionary:Tracking/ar-verb/explicit-vn/i3rab/an-tall (pages with	--  explicitly specified verbal nouns with tall-alif -an i3rab) -- Wiktionary:Tracking/ar-verb/auto-vn/i3rab (pages with auto-generated verbal	--  nouns with any sort of i3rab) -- Wiktionary:Tracking/ar-verb/vn/no-i3rab (pages with verbal nouns without	--  i3rab) -- Wiktionary:Tracking/ar-verb/vn/would-be-decl/di (pages with verbal nouns	--  that would be detected as diptote without explicit i3rab) function vntrack(pagesuff) track("vn/" .. pagesuff) if args["vn"] then track("explicit-vn/" .. pagesuff) else track("auto-vn/" .. pagesuff) end end

function track_i3rab(entry, arabic, tr) if rfind(entry, arabic .. "$") then vntrack("i3rab") vntrack("i3rab/" .. tr) end end

for _, entry in ipairs(vns) do		-- Need to do this else we will have problems with VN's whose stem ends -- in shadda. entry = reorder_shadda(entry) track_i3rab(entry, UN, "un") track_i3rab(entry, U, "u") track_i3rab(entry, IN, "in") track_i3rab(entry, I, "i") track_i3rab(entry, AN .. "[" .. ALIF .. AMAQ .. "]", "an") track_i3rab(entry, AN .. ALIF, "an-tall") track_i3rab(entry, A, "a") track_i3rab(entry, SK, "sk") if not rfind(entry, "[" .. A .. I .. U .. AN .. IN .. UN .. DAGGER_ALIF .. "]$") and not rfind(entry, AN .. "[" .. ALIF .. AMAQ .. "]") then vntrack("no-i3rab") end entry = rsub(entry, UNU .. "?$", "") -- Figure out what the decltype would be without any explicit -un -- or -u added, to see whether there are any nouns that would be -- detected as diptotes, e.g. of the فَعْلَان pattern. local decltype = ar_nominals.detect_type(entry, false, "sg", "noun") vntrack("would-be-decl/" .. decltype) end End verbal-noun i3rab tracking code ---

if no_nominal_i3rab then vns_no_i3rab = {} for _, entry in ipairs(vns) do			entry = reorder_shadda(entry) entry = rsub(entry, UNU .. "?$", "") table.insert(vns_no_i3rab, entry) end if vns.ids then vns_no_i3rab.ids = vns.ids end insert_part(data, "vn", vns_no_i3rab) else insert_part(data, "vn", vns) end end

--- --                     Functions to inflect the past tense                  -- ---

--generate past verbs using specified vowel and consonant stems; works for --sound, assimilated, hollow, and geminate verbs, active and passive local function past_2stem_conj(data, tense, v_stem, c_stem) inflect_tense(data, tense, "", {		-- singular		c_stem, c_stem, c_stem, v_stem, v_stem,		--dual		c_stem, v_stem, v_stem,		-- plural		c_stem, c_stem, c_stem, v_stem, c_stem	}, past_endings) end

--generate past verbs using single specified stem; works for sound and --assimilated verbs, active and passive local function past_1stem_conj(data, tense, stem) past_2stem_conj(data, tense, stem, stem) end

--- --                    Functions to inflect non-past tenses                  -- ---

-- Generate non-past conjugation, with two stems, for vowel-initial and -- consonant-initial endings, respectively. Useful for active and passive; -- for all forms; for all weaknesses (sound, assimilated, hollow, final-weak -- and geminate) and for all types of non-past (indicative, subjunctive, -- jussive) except for the imperative. (There is a separate function below -- for geminate jussives because they have three alternants.) Both stems may -- be the same, e.g. for sound verbs. -- -- PREFIXES will generally be either "a" (= 'nonpast_prefixes_a', for active -- forms I and V - X) or "u" (= 'nonpast_prefixes_u', for active forms II - IV -- and Iq and all passive forms). Otherwise, it should be either a single string -- (often "") or an array (table) of 13 items. ENDINGS should similarly be an -- array of 13 items. If ENDINGS is nil or omitted, infer the endings from -- the tense. If JUSSIVE is true, or ENDINGS is nil and TENSE indicatives -- jussive, use the jussive pattern of vowel/consonant stems (different from the -- normal ones). local function nonpast_2stem_conj(data, tense, prefixes, v_stem, c_stem, endings, jussive) if prefixes == "a" then prefixes = nonpast_prefixes_a elseif prefixes == "u" then prefixes = nonpast_prefixes_u end if endings == nil then if tense == "impf" or tense == "ps-impf" then endings = indic_endings elseif tense == "subj" or tense == "ps-subj" then endings = subj_endings elseif tense == "juss" or tense == "ps-juss" then jussive = true endings = juss_endings else error("Unrecognized tense '" .. tense .."'") end end if not jussive then inflect_tense(data, tense, prefixes, {			-- singular			v_stem, v_stem, v_stem, v_stem, v_stem,			--dual			v_stem, v_stem, v_stem,			-- plural			v_stem, v_stem, c_stem, v_stem, c_stem		}, endings) else inflect_tense(data, tense, prefixes, {			-- singular			-- 'adlul, tadlul, tadullī, yadlul, tadlul			c_stem, c_stem, v_stem, c_stem, c_stem,			--dual			-- tadullā, yadullā, tadullā			v_stem, v_stem, v_stem,			-- plural			-- nadlul, tadullū, tadlulna, yadullū, yadlulna			c_stem, v_stem, c_stem, v_stem, c_stem		}, endings) end end

-- Generate non-past conjugation with one stem (no distinct stems for -- vowel-initial and consonant-initial endings). See nonpast_2stem_conj. local function nonpast_1stem_conj(data, tense, prefixes, stem, endings, jussive) nonpast_2stem_conj(data, tense, prefixes, stem, stem, endings, jussive) end

-- Generate active/passive jussive geminative. There are three alternants, two -- with terminations -a and -i and one in a null termination with a distinct -- pattern of vowel/consonant stem usage. See nonpast_2stem_conj for a -- description of the arguments. local function jussive_gem_conj(data, tense, prefixes, v_stem, c_stem) -- alternative in -a nonpast_2stem_conj(data, tense, prefixes, v_stem, c_stem, juss_endings_alt_a) -- alternative in -i nonpast_2stem_conj(data, tense, prefixes, v_stem, c_stem, juss_endings_alt_i) -- alternative in -null; requires different combination of v_stem and -- c_stem since the null endings require the c_stem (e.g. "tadlul" here) -- whereas the corresponding endings above in -a or -i require the v_stem -- (e.g. "tadulla, tadulli" above) nonpast_2stem_conj(data, tense, prefixes, v_stem, c_stem, juss_endings, "jussive") end

--- --                   Functions to inflect the imperative                    -- ---

-- generate imperative parts for sound or assimilated verbs local function make_1stem_imperative(data, stem) inflect_tense_impr(data, stem, impr_endings) end

-- generate imperative parts for two-stem verbs (hollow or geminate) local function make_2stem_imperative(data, v_stem, c_stem) inflect_tense_impr(data,		{c_stem, v_stem, v_stem, v_stem, c_stem}, impr_endings) end

-- generate imperative parts for geminate verbs form I (also IV, VII, VIII, X) local function make_gem_imperative(data, v_stem, c_stem) inflect_tense_impr(data,		{v_stem, v_stem, v_stem, v_stem, c_stem}, impr_endings_alt_a) inflect_tense_impr(data,		{v_stem, v_stem, v_stem, v_stem, c_stem}, impr_endings_alt_i) make_2stem_imperative(data, v_stem, c_stem) end

--- --                   Functions to inflect entire verbs                      -- ---

-- generate finite parts of a sound verb (also works for assimilated verbs) -- from five stems (past and non-past, active and passive, plus imperative) -- plus the prefix vowel in the active non-past ("a" or "u") local function make_sound_verb(data, past_stem, ps_past_stem, nonpast_stem,		ps_nonpast_stem, imper_stem, prefix_vowel) past_1stem_conj(data, "perf", past_stem) past_1stem_conj(data, "ps-perf", ps_past_stem) nonpast_1stem_conj(data, "impf", prefix_vowel, nonpast_stem) nonpast_1stem_conj(data, "subj", prefix_vowel, nonpast_stem) nonpast_1stem_conj(data, "juss", prefix_vowel, nonpast_stem) nonpast_1stem_conj(data, "ps-impf", "u", ps_nonpast_stem) nonpast_1stem_conj(data, "ps-subj", "u", ps_nonpast_stem) nonpast_1stem_conj(data, "ps-juss", "u", ps_nonpast_stem) make_1stem_imperative(data, imper_stem) end

-- generate finite parts of a final-weak verb from five stems (past and -- non-past, active and passive, plus imperative), five sets of -- suffixes (past, non-past indicative/subjunctive/jussive, imperative) -- and the prefix vowel in the active non-past ("a" or "u") local function make_final_weak_verb(data, past_stem, ps_past_stem, nonpast_stem,		ps_nonpast_stem, imper_stem, past_suffs, indic_suffs,		subj_suffs, juss_suffs, impr_suffs, prefix_vowel) inflect_tense(data, "perf", "", past_stem, past_suffs) inflect_tense(data, "ps-perf", "", ps_past_stem, past_endings_ii) nonpast_1stem_conj(data, "impf", prefix_vowel, nonpast_stem, indic_suffs) nonpast_1stem_conj(data, "subj", prefix_vowel, nonpast_stem, subj_suffs) nonpast_1stem_conj(data, "juss", prefix_vowel, nonpast_stem, juss_suffs) nonpast_1stem_conj(data, "ps-impf", "u", ps_nonpast_stem, indic_endings_aa) nonpast_1stem_conj(data, "ps-subj", "u", ps_nonpast_stem, subj_endings_aa) nonpast_1stem_conj(data, "ps-juss", "u", ps_nonpast_stem, juss_endings_aa) inflect_tense_impr(data, imper_stem, impr_suffs) end

-- generate finite parts of an augmented (form II+) final-weak verb from five -- stems (past and non-past, active and passive, plus imperative) plus the -- prefix vowel in the active non-past ("a" or "u") and a flag indicating if -- behave like a form V/VI verb in taking non-past endings in -ā instead of -ī local function make_augmented_final_weak_verb(data, past_stem, ps_past_stem,		nonpast_stem, ps_nonpast_stem, imper_stem, prefix_vowel, form56) make_final_weak_verb(data, past_stem, ps_past_stem, nonpast_stem,		ps_nonpast_stem, imper_stem, past_endings_ay,		form56 and indic_endings_aa or indic_endings_ii,		form56 and subj_endings_aa or subj_endings_ii,		form56 and juss_endings_aa or juss_endings_ii,		form56 and impr_endings_aa or impr_endings_ii,		prefix_vowel) end

-- generate finite parts of an augmented (form II+) sound or final-weak verb, -- given the following: -- -- DATA, ARGS = arguments from conjugation function -- RAD3 = last radical; should be nil for final-weak verb -- PAST_STEM_BASE = active past stem minus last syllable (= -al or -ā) -- NONPAST_STEM_BASE = non-past stem minus last syllable (= -al/-il or -ā/-ī) -- PS_PAST_STEM_BASE = passive past stem minus last syllable (= -il or -ī) -- FORM -- form of verb (II to XV, Iq - IVq) -- VN = verbal noun local function make_augmented_sound_final_weak_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form)

insert_verbal_noun(data, args, vn)

local final_weak = rad3 == nil local prefix_vowel = prefix_vowel_from_form(form) local form56 = form_nonpast_a_vowel(form) local a_base_suffix = final_weak and "" or A .. rad3 local i_base_suffix = final_weak and "" or I .. rad3

-- past and non-past stems, active and passive local past_stem = past_stem_base .. a_base_suffix -- In forms 5 and 6, non-past has /a/ as last stem vowel in the non-past -- in both active and passive, but /i/ in the active participle and /a/ -- in the passive participle. Elsewhere, consistent /i/ in active non-past -- and participle, consistent /a/ in passive non-past and participle. -- Hence, forms 5 and 6 differ only in the non-past active (but not	-- active participle), so we have to split the finite non-past stem and -- active participle stem. local nonpast_stem = nonpast_stem_base .. (form56 and a_base_suffix or i_base_suffix) local ap_stem = nonpast_stem_base .. i_base_suffix local ps_past_stem = ps_past_stem_base .. i_base_suffix local ps_nonpast_stem = nonpast_stem_base .. a_base_suffix -- imperative stem local imper_stem = past_stem_base .. (form56 and a_base_suffix or i_base_suffix)

-- make parts if final_weak then make_augmented_final_weak_verb(data, past_stem, ps_past_stem, nonpast_stem,			ps_nonpast_stem, imper_stem, prefix_vowel, form56) else make_sound_verb(data, past_stem, ps_past_stem, nonpast_stem,			ps_nonpast_stem, imper_stem, prefix_vowel) end

-- active and passive participle if final_weak then insert_part(data, "ap", MU .. ap_stem .. IN) insert_part(data, "pp", MU .. ps_nonpast_stem .. AN .. AMAQ) else insert_part(data, "ap", MU .. ap_stem .. UNS) insert_part(data, "pp", MU .. ps_nonpast_stem .. UNS) end end

-- generate finite parts of a hollow or geminate verb from ten stems (vowel and -- consonant stems for each of past and non-past, active and passive, plus -- imperative) plus the prefix vowel in the active non-past ("a" or "u"), plus -- a flag indicating if we are a geminate verb local function make_hollow_geminate_verb(data, past_v_stem, past_c_stem, ps_past_v_stem,	ps_past_c_stem, nonpast_v_stem, nonpast_c_stem, ps_nonpast_v_stem,	ps_nonpast_c_stem, imper_v_stem, imper_c_stem, prefix_vowel, geminate) past_2stem_conj(data, "perf", past_v_stem, past_c_stem) past_2stem_conj(data, "ps-perf", ps_past_v_stem, ps_past_c_stem) nonpast_2stem_conj(data, "impf", prefix_vowel, nonpast_v_stem, nonpast_c_stem) nonpast_2stem_conj(data, "subj", prefix_vowel, nonpast_v_stem, nonpast_c_stem) nonpast_2stem_conj(data, "ps-impf", "u", ps_nonpast_v_stem, ps_nonpast_c_stem) nonpast_2stem_conj(data, "ps-subj", "u", ps_nonpast_v_stem, ps_nonpast_c_stem) if geminate then jussive_gem_conj(data, "juss", prefix_vowel, nonpast_v_stem, nonpast_c_stem) jussive_gem_conj(data, "ps-juss", "u", ps_nonpast_v_stem, ps_nonpast_c_stem) make_gem_imperative(data, imper_v_stem, imper_c_stem) else nonpast_2stem_conj(data, "juss", prefix_vowel, nonpast_v_stem, nonpast_c_stem) nonpast_2stem_conj(data, "ps-juss", "u", ps_nonpast_v_stem, ps_nonpast_c_stem) make_2stem_imperative(data, imper_v_stem, imper_c_stem) end end

-- generate finite parts of an augmented (form II+) hollow verb, -- given the following: -- -- DATA, ARGS = arguments from conjugation function -- RAD3 = last radical (after the hollowness) -- PAST_STEM_BASE = invariable part of active past stem -- NONPAST_STEM_BASE = invariable part of non-past stem -- PS_PAST_STEM_BASE = invariable part of passive past stem -- VN = verbal noun -- FORM = the verb form ("IV", "VII", "VIII", "X") local function make_augmented_hollow_verb(data, args, rad3,	past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form) insert_verbal_noun(data, args, vn)

local form410 = form == "IV" or form == "X" local prefix_vowel = prefix_vowel_from_form(form)

local a_base_suffix_v, a_base_suffix_c local i_base_suffix_v, i_base_suffix_c

a_base_suffix_v = AA .. rad3        -- 'af-āl-a, inf-āl-a a_base_suffix_c = A .. rad3     -- 'af-al-tu, inf-al-tu i_base_suffix_v = II .. rad3        -- 'uf-īl-a, unf-īl-a i_base_suffix_c = I .. rad3     -- 'uf-il-tu, unf-il-tu

-- past and non-past stems, active and passive, for vowel-initial and -- consonant-initial endings local past_v_stem = past_stem_base .. a_base_suffix_v local past_c_stem = past_stem_base .. a_base_suffix_c -- yu-f-īl-u, ya-staf-īl-u but yanf-āl-u, yaft-āl-u local nonpast_v_stem = nonpast_stem_base .. (form410 and i_base_suffix_v or a_base_suffix_v) local nonpast_c_stem = nonpast_stem_base .. (form410 and i_base_suffix_c or a_base_suffix_c) local ps_past_v_stem = ps_past_stem_base .. i_base_suffix_v local ps_past_c_stem = ps_past_stem_base .. i_base_suffix_c local ps_nonpast_v_stem = nonpast_stem_base .. a_base_suffix_v local ps_nonpast_c_stem = nonpast_stem_base .. a_base_suffix_c

-- imperative stem local imper_v_stem = past_stem_base .. (form410 and i_base_suffix_v or a_base_suffix_v) local imper_c_stem = past_stem_base .. (form410 and i_base_suffix_c or a_base_suffix_c)

-- make parts make_hollow_geminate_verb(data, past_v_stem, past_c_stem, ps_past_v_stem,		ps_past_c_stem, nonpast_v_stem, nonpast_c_stem, ps_nonpast_v_stem,		ps_nonpast_c_stem, imper_v_stem, imper_c_stem, prefix_vowel, false)

-- active participle insert_part(data, "ap", MU .. nonpast_v_stem .. UNS) -- passive participle insert_part(data, "pp", MU .. ps_nonpast_v_stem .. UNS) end

-- generate finite parts of an augmented (form II+) geminate verb, -- given the following: -- -- DATA, ARGS = arguments from conjugation function -- RAD3 = last radical (the one that gets geminated) -- PAST_STEM_BASE = invariable part of active past stem; this and the stem --  bases below will end with a consonant for forms IV, X, IVq, and a --   short vowel for the others -- NONPAST_STEM_BASE = invariable part of non-past stem -- PS_PAST_STEM_BASE = invariable part of passive past stem -- VN = verbal noun -- FORM = the verb form ("III", "IV", "VI", "VII", "VIII", "IX", "X", "IVq") local function make_augmented_geminate_verb(data, args, rad3,	past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form) insert_verbal_noun(data, args, vn)

local prefix_vowel = prefix_vowel_from_form(form)

local a_base_suffix_v, a_base_suffix_c local i_base_suffix_v, i_base_suffix_c

if form == "IV" or form == "X" or form == "IVq" then a_base_suffix_v = A .. rad3 .. SH        -- 'af-all a_base_suffix_c = SK .. rad3 .. A .. rad3 -- 'af-lal i_base_suffix_v = I .. rad3 .. SH        -- yuf-ill i_base_suffix_c = SK .. rad3 .. I .. rad3 -- yuf-lil else a_base_suffix_v = rad3 .. SH        -- fā-ll, infa-ll a_base_suffix_c = rad3 .. A .. rad3 -- fā-lal, infa-lal i_base_suffix_v = rad3 .. SH        -- yufā-ll, yanfa-ll i_base_suffix_c = rad3 .. I .. rad3 -- yufā-lil, yanfa-lil end

-- past and non-past stems, active and passive, for vowel-initial and -- consonant-initial endings local past_v_stem = past_stem_base .. a_base_suffix_v local past_c_stem = past_stem_base .. a_base_suffix_c local nonpast_v_stem = nonpast_stem_base .. (form_nonpast_a_vowel(form) and a_base_suffix_v or i_base_suffix_v) local nonpast_c_stem = nonpast_stem_base .. (form_nonpast_a_vowel(form) and a_base_suffix_c or i_base_suffix_c) -- form III and VI passive past do not have contracted parts, only -- uncontracted parts, which are added separately by those functions local ps_past_v_stem = (form == "III" or form == "VI") and "-" or ps_past_stem_base .. i_base_suffix_v local ps_past_c_stem = ps_past_stem_base .. i_base_suffix_c local ps_nonpast_v_stem = nonpast_stem_base .. a_base_suffix_v local ps_nonpast_c_stem = nonpast_stem_base .. a_base_suffix_c

-- imperative stem local imper_v_stem = past_stem_base .. (form_nonpast_a_vowel(form) and a_base_suffix_v or i_base_suffix_v) local imper_c_stem = past_stem_base .. (form_nonpast_a_vowel(form) and a_base_suffix_c or i_base_suffix_c)

-- make parts make_hollow_geminate_verb(data, past_v_stem, past_c_stem, ps_past_v_stem,		ps_past_c_stem, nonpast_v_stem, nonpast_c_stem, ps_nonpast_v_stem,		ps_nonpast_c_stem, imper_v_stem, imper_c_stem, prefix_vowel,		"geminate")

-- active participle insert_part(data, "ap", MU .. nonpast_v_stem .. UNS) -- passive participle insert_part(data, "pp", MU .. ps_nonpast_v_stem .. UNS) end

--- --           Conjugation functions for specific conjugation types           -- ---

-- Derive default non-past vowel from past vowel. Most common possibilities are -- a/u, a/i, a/a if rad2 or rad3 are guttural, i/a, u/u. We choose a/u over a/i. local function nonpast_from_past_vowel(past_vowel, rad2, rad3) return past_vowel == "i" and "a" or past_vowel == "u" and "u" or		(is_guttural(rad2) or is_guttural(rad3)) and "a" or "u" end

-- determine the imperative vowel based on non-past vowel local function imper_vowel_from_nonpast(nonpast_vowel) if nonpast_vowel == "a" or nonpast_vowel == "i" then return "i" elseif nonpast_vowel == "u" then return "u" else error("Non-past vowel '" .. nonpast_vowel .. "' isn't a, i, or u, should have been caught earlier") end end

-- Convert short vowel to equivalent long vowel (a -> alif, u -> wāw, i -> yāʾ). local function short_to_long_vowel(vowel) if vowel == A then return ALIF elseif vowel == I then return Y	elseif vowel == U then return W	else error("Vowel '" .. vowel .. "' isn't a, i, or u, should have been caught earlier") end end

-- Implement form-I sound or assimilated verb. ASSIMILATED is true for -- assimilated verbs. local function make_form_i_sound_assimilated_verb(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel, assimilated) -- need to provide two vowels - past and non-past past_vowel = past_vowel or "a" nonpast_vowel = nonpast_vowel or nonpast_from_past_vowel(past_vowel, rad2, rad3) check_aiu("past", past_vowel) check_aiu("non-past", nonpast_vowel)

-- Verbal nouns (maṣādir) for form I are unpredictable and have to be supplied insert_verbal_noun(data, args, {})

-- past and non-past stems, active and passive local past_stem = rad1 .. A .. rad2 .. dia[past_vowel] .. rad3 local nonpast_stem = assimilated and rad2 .. dia[nonpast_vowel] .. rad3 or rad1 .. SK .. rad2 .. dia[nonpast_vowel] .. rad3 local ps_past_stem = rad1 .. U .. rad2 .. I .. rad3 local ps_nonpast_stem = rad1 .. SK .. rad2 .. A .. rad3

-- determine the imperative vowel based on non-past vowel local imper_vowel = imper_vowel_from_nonpast(nonpast_vowel)

-- imperative stem -- check for irregular verb with reduced imperative (أَخَذَ or أَكَلَ or أَمَرَ) local reducedimp = reduced_imperative_verb(rad1, rad2, rad3) if reducedimp then data.irregular = true end local imper_stem_suffix = rad2 .. dia[nonpast_vowel] .. rad3 local imper_stem_base = (assimilated or reducedimp) and "" or ALIF .. dia[imper_vowel] .. (rad1 == HAMZA and short_to_long_vowel(dia[imper_vowel]) or rad1 .. SK) local imper_stem = imper_stem_base .. imper_stem_suffix

-- make parts make_sound_verb(data, past_stem, ps_past_stem, nonpast_stem,		ps_nonpast_stem, imper_stem, "a")

-- Check for irregular verb سَأَلَ with alternative jussive and imperative. -- Calling this after make_sound_verb adds additional entries to the -- paradigm parts. if saal_radicals(rad1, rad2, rad3) then data.irregular = true nonpast_1stem_conj(data, "juss", "a", "سَل") nonpast_1stem_conj(data, "ps-juss", "u", "سَل") make_1stem_imperative(data, "سَل") end

-- active participle insert_part(data, "ap", rad1 .. AA .. rad2 .. I .. rad3 .. UNS) -- passive participle insert_part(data, "pp", MA .. rad1 .. SK .. rad2 .. U .. "و" .. rad3 .. UNS) end

conjugations["I-sound"] = function(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel) make_form_i_sound_assimilated_verb(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel, false) end

conjugations["I-assimilated"] = function(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel) make_form_i_sound_assimilated_verb(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel, "assimilated") end

local function make_form_i_hayy_verb(data, args) -- Verbal nouns (maṣādir) for form I are unpredictable and have to be supplied insert_verbal_noun(data, args, {})

data.irregular = true

-- past and non-past stems, active and passive, and imperative stem local past_c_stem = "حَيِي" local past_v_stem_long = past_c_stem local past_v_stem_short = "حَيّ" local ps_past_c_stem = "حُيِي" local ps_past_v_stem_long = ps_past_c_stem local ps_past_v_stem_short = "حُيّ"

local nonpast_stem = "حْي" local ps_nonpast_stem = nonpast_stem local imper_stem = "اِ" .. nonpast_stem

-- make parts

past_2stem_conj(data, "perf", "-", past_c_stem) past_2stem_conj(data, "ps-perf", "-", ps_past_c_stem) local variant = args["variant"] if variant == "short" or variant == "both" then past_2stem_conj(data, "perf", past_v_stem_short, "-") past_2stem_conj(data, "ps-perf", ps_past_v_stem_short, "-") end function inflect_long_variant(tense, long_stem, short_stem) inflect_tense_1(data, tense, "",			{long_stem, long_stem, long_stem, long_stem, short_stem},			{past_endings[4], past_endings[5], past_endings[7], past_endings[8],			 past_endings[12]},			{"3sm", "3sf", "3dm", "3df", "3pm"}) end if variant == "long" or variant == "both" then inflect_long_variant("perf", past_v_stem_long, past_v_stem_short) inflect_long_variant("ps-perf", ps_past_v_stem_long, ps_past_v_stem_short) end

nonpast_1stem_conj(data, "impf", "a", nonpast_stem, indic_endings_aa) nonpast_1stem_conj(data, "subj", "a", nonpast_stem, subj_endings_aa) nonpast_1stem_conj(data, "juss", "a", nonpast_stem, juss_endings_aa) nonpast_1stem_conj(data, "ps-impf", "u", ps_nonpast_stem, indic_endings_aa) nonpast_1stem_conj(data, "ps-subj", "u", ps_nonpast_stem, subj_endings_aa) nonpast_1stem_conj(data, "ps-juss", "u", ps_nonpast_stem, juss_endings_aa) inflect_tense_impr(data, imper_stem, impr_endings_aa)

-- active participle apparently does not exist for this verb insert_part(data, "ap", {}) -- passive participle apparently does not exist for this verb insert_part(data, "pp", {}) end

-- Implement form-I final-weak assimilated+final-weak verb. ASSIMILATED is true -- for assimilated verbs. local function make_form_i_final_weak_verb(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel, assimilated)

-- حَيَّ or حَيِيَ is weird enough that we handle it as a separate function if hayy_radicals(rad1, rad2, rad3) then make_form_i_hayy_verb(data, args) return end

-- need to provide two vowels - past and non-past local past_vowel = past_vowel or "a" local nonpast_vowel = nonpast_vowel or past_vowel == "i" and "a" or		past_vowel == "u" and "u" or rad3 == Y and "i" or "u" check_aiu("past", past_vowel) check_aiu("non-past", nonpast_vowel)

-- Verbal nouns (maṣādir) for form I are unpredictable and have to be supplied insert_verbal_noun(data, args, {})

-- past and non-past stems, active and passive, and imperative stem local past_stem = rad1 .. A .. rad2 local ps_past_stem = rad1 .. U .. rad2 local nonpast_stem, ps_nonpast_stem, imper_stem if raa_radicals(rad1, rad2, rad3) then data.irregular = true nonpast_stem = rad1 ps_nonpast_stem = rad1 imper_stem = rad1 else ps_nonpast_stem = rad1 .. SK .. rad2 if assimilated then nonpast_stem = rad2 imper_stem = rad2 else nonpast_stem = ps_nonpast_stem -- determine the imperative vowel based on non-past vowel local imper_vowel = imper_vowel_from_nonpast(nonpast_vowel) imper_stem = ALIF .. dia[imper_vowel] .. (rad1 == HAMZA and short_to_long_vowel(dia[imper_vowel])					or rad1 .. SK) .. rad2 end end

-- make parts local past_suffs = rad3 == Y and past_vowel == "a" and past_endings_ay or		rad3 == W and past_vowel == "a" and past_endings_aw or		past_vowel == "i" and past_endings_ii or		past_endings_uu local indic_suffs, subj_suffs, juss_suffs, impr_suffs if nonpast_vowel == "a" then indic_suffs = indic_endings_aa subj_suffs = subj_endings_aa juss_suffs = juss_endings_aa impr_suffs = impr_endings_aa elseif nonpast_vowel == "i" then indic_suffs = indic_endings_ii subj_suffs = subj_endings_ii juss_suffs = juss_endings_ii impr_suffs = impr_endings_ii else assert(nonpast_vowel == "u") indic_suffs = indic_endings_uu subj_suffs = subj_endings_uu juss_suffs = juss_endings_uu impr_suffs = impr_endings_uu end make_final_weak_verb(data, past_stem, ps_past_stem, nonpast_stem,		ps_nonpast_stem, imper_stem, past_suffs, indic_suffs,		subj_suffs, juss_suffs, impr_suffs, "a")

-- active participle insert_part(data, "ap", rad1 .. AA .. rad2 .. IN) -- passive participle insert_part(data, "pp", MA .. rad1 .. SK .. rad2 ..		(rad3 == Y and II or UU) .. SH .. UNS) end

conjugations["I-final-weak"] = function(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel) make_form_i_final_weak_verb(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel, false) end

conjugations["I-assimilated+final-weak"] = function(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel) make_form_i_final_weak_verb(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel, "assimilated") end

conjugations["I-hollow"] = function(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel) -- need to specify up to two vowels, past and non-past -- default past vowel to short equivalent of middle radical local past_vowel = past_vowel or rad2 == Y and "i" or "u" -- default non-past vowel to past vowel, unless it's "a", in which case -- we default to short equivalent of middle radical local nonpast_vowel = nonpast_vowel or past_vowel ~= "a" and past_vowel or		rad2 == Y and "i" or "u" check_aiu("past", past_vowel) check_aiu("non-past", nonpast_vowel) -- Formerly we signaled an error when past_vowel is "a" but that seems -- too harsh. We can interpret a past vowel of "a" as meaning to use the -- non-past vowel in forms requiring a short vowel. If the non-past vowel -- is "a" then the past vowel can only be "i" (e.g. in nāma yanāmu with	-- first singular past of nimtu). if past_vowel == "a" then -- error("For form I hollow, past vowel cannot be 'a'") past_vowel = nonpast_vowel == "a" and "i" or nonpast_vowel end local lengthened_nonpast = nonpast_vowel == "u" and UU or		nonpast_vowel == "i" and II or AA

-- Verbal nouns (maṣādir) for form I are unpredictable and have to be supplied insert_verbal_noun(data, args, {})

-- active past stems - vowel (v) and consonant (c) local past_v_stem = rad1 .. AA .. rad3 local past_c_stem = rad1 .. dia[past_vowel] .. rad3

-- active non-past stems - vowel (v) and consonant (c) local nonpast_v_stem = rad1 .. lengthened_nonpast .. rad3 local nonpast_c_stem = rad1 .. dia[nonpast_vowel] .. rad3

-- passive past stems - vowel (v) and consonant (c) -- 'ufīla, 'ufiltu local ps_past_v_stem = rad1 .. II .. rad3 local ps_past_c_stem = rad1 .. I .. rad3

-- passive non-past stems - vowel (v) and consonant (c) -- yufāla/yufalna -- stem is built differently but conjugation is identical to sound verbs local ps_nonpast_v_stem = rad1 .. AA .. rad3 local ps_nonpast_c_stem = rad1 .. A .. rad3

-- imperative stem local imper_v_stem = nonpast_v_stem local imper_c_stem = nonpast_c_stem

-- make parts make_hollow_geminate_verb(data, past_v_stem, past_c_stem, ps_past_v_stem,		ps_past_c_stem, nonpast_v_stem, nonpast_c_stem, ps_nonpast_v_stem,		ps_nonpast_c_stem, imper_v_stem, imper_c_stem, "a", false)

-- active participle insert_part(data, "ap", rad3 == HAMZA and rad1 .. AA .. HAMZA .. IN or		rad1 .. AA .. HAMZA .. I .. rad3 .. UNS) -- passive participle insert_part(data, "pp", MA .. rad1 .. (rad2 == Y and II or UU) .. rad3 .. UNS) end

conjugations["I-geminate"] = function(data, args, rad1, rad2, rad3,		past_vowel, nonpast_vowel) -- need to specify two vowels, past and non-past local past_vowel = past_vowel or "a" local nonpast_vowel = nonpast_vowel or nonpast_from_past_vowel(past_vowel, rad2, rad3)

-- Verbal nouns (maṣādir) for form I are unpredictable and have to be supplied insert_verbal_noun(data, args, {})

-- active past stems - vowel (v) and consonant (c) local past_v_stem = rad1 .. A .. rad2 .. SH local past_c_stem = rad1 .. A .. rad2 .. dia[past_vowel] .. rad2

-- active non-past stems - vowel (v) and consonant (c) local nonpast_v_stem = rad1 .. dia[nonpast_vowel] .. rad2 .. SH local nonpast_c_stem = rad1 .. SK .. rad2 .. dia[nonpast_vowel] .. rad2

-- passive past stems - vowel (v) and consonant (c) -- dulla/dulilta local ps_past_v_stem = rad1 .. U .. rad2 .. SH local ps_past_c_stem = rad1 .. U .. rad2 .. I .. rad2

-- passive non-past stems - vowel (v) and consonant (c) --yudallu/yudlalna -- stem is built differently but conjugation is identical to sound verbs local ps_nonpast_v_stem = rad1 .. A .. rad2 .. SH local ps_nonpast_c_stem = rad1 .. SK .. rad2 .. A .. rad2

-- determine the imperative vowel based on non-past vowel local imper_vowel = imper_vowel_from_nonpast(nonpast_vowel)

-- imperative stem local imper_v_stem = rad1 .. dia[nonpast_vowel] .. rad2 .. SH local imper_c_stem = ALIF .. dia[imper_vowel] .. (rad1 == HAMZA and short_to_long_vowel(dia[imper_vowel]) or rad1 .. SK) .. rad2 .. dia[nonpast_vowel] .. rad2

-- make parts make_hollow_geminate_verb(data, past_v_stem, past_c_stem, ps_past_v_stem,		ps_past_c_stem, nonpast_v_stem, nonpast_c_stem, ps_nonpast_v_stem,		ps_nonpast_c_stem, imper_v_stem, imper_c_stem, "a", "geminate")

-- active participle insert_part(data, "ap", rad1 .. AA .. rad2 .. SH .. UNS) -- passive participle insert_part(data, "pp", MA .. rad1 .. SK .. rad2 .. U .. "و" .. rad2 .. UNS) end

-- Make form II or V sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil, and FORM distinguishes II from V. local function make_form_ii_v_sound_final_weak_verb(data, args, rad1, rad2, rad3, form) local final_weak = rad3 == nil local vn = form == "V" and "تَ" .. rad1 .. A .. rad2 .. SH .. (final_weak and IN or U .. rad3 .. UNS) or "تَ" .. rad1 .. SK .. rad2 .. I .. "ي" .. (final_weak and AH or rad3) .. UNS local ta_pref = form == "V" and "تَ" or "" local tu_pref = form == "V" and "تُ" or ""

-- various stem bases local past_stem_base = ta_pref .. rad1 .. A .. rad2 .. SH	local nonpast_stem_base = past_stem_base local ps_past_stem_base = tu_pref .. rad1 .. U .. rad2 .. SH

-- make parts make_augmented_sound_final_weak_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form) end

conjugations["II-sound"] = function(data, args, rad1, rad2, rad3) make_form_ii_v_sound_final_weak_verb(data, args, rad1, rad2, rad3, "II") end

conjugations["II-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_ii_v_sound_final_weak_verb(data, args, rad1, rad2, nil, "II") end

-- Make form III or VI sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil, and FORM distinguishes III from VI. local function make_form_iii_vi_sound_final_weak_verb(data, args, rad1, rad2, rad3, form) local final_weak = rad3 == nil local vn = form == "VI" and "تَ" .. rad1 .. AA .. rad2 .. (final_weak and IN or U .. rad3 .. UNS) or {MU .. rad1 .. AA .. rad2 .. (final_weak and AAH or A .. rad3 .. AH) .. UNS, rad1 .. I .. rad2 .. AA .. (final_weak and HAMZA or rad3) .. UNS} local ta_pref = form == "VI" and "تَ" or "" local tu_pref = form == "VI" and "تُ" or ""

-- various stem bases local past_stem_base = ta_pref .. rad1 .. AA .. rad2 local nonpast_stem_base = past_stem_base local ps_past_stem_base = tu_pref .. rad1 .. UU .. rad2

-- make parts make_augmented_sound_final_weak_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form) end

conjugations["III-sound"] = function(data, args, rad1, rad2, rad3) make_form_iii_vi_sound_final_weak_verb(data, args, rad1, rad2, rad3, "III") end

conjugations["III-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_iii_vi_sound_final_weak_verb(data, args, rad1, rad2, nil, "III") end

-- Make form III or VI geminate verb. FORM distinguishes III from VI. local function make_form_iii_vi_geminate_verb(data, args, rad1, rad2, form) -- alternative verbal noun فِعَالٌ will be inserted when we add sound parts below local vn = form == "VI" and {"تَ" .. rad1 .. AA .. rad2 .. SH .. UNS} or {MU .. rad1 .. AA .. rad2 .. SH .. AH .. UNS} local ta_pref = form == "VI" and "تَ" or "" local tu_pref = form == "VI" and "تُ" or ""

-- various stem bases local past_stem_base = ta_pref .. rad1 .. AA	local nonpast_stem_base = past_stem_base local ps_past_stem_base = tu_pref .. rad1 .. UU

-- make parts make_augmented_geminate_verb(data, args, rad2,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form)

-- Also add alternative sound (non-compressed) parts. This will lead to -- some duplicate entries, but they are removed in get_spans. make_form_iii_vi_sound_final_weak_verb(data, args, rad1, rad2, rad2, form) end

conjugations["III-geminate"] = function(data, args, rad1, rad2, rad3) make_form_iii_vi_geminate_verb(data, args, rad1, rad2, "III") end

-- Make form IV sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil. local function make_form_iv_sound_final_weak_verb(data, args, rad1, rad2, rad3) local final_weak = rad3 == nil

-- core of stem base, minus stem prefixes local stem_core

-- check for irregular verb أَرَى if raa_radicals(rad1, rad2, final_weak and Y or rad3) then data.irregular = true stem_core = rad1 else stem_core =	rad1 .. SK .. rad2 end

-- verbal noun local vn = HAMZA .. I .. stem_core .. AA .. (final_weak and HAMZA or rad3) .. UNS

-- various stem bases local past_stem_base = HAMZA .. A .. stem_core local nonpast_stem_base = stem_core local ps_past_stem_base = HAMZA .. U .. stem_core

-- make parts make_augmented_sound_final_weak_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "IV") end

conjugations["IV-sound"] = function(data, args, rad1, rad2, rad3) make_form_iv_sound_final_weak_verb(data, args, rad1, rad2, rad3) end

conjugations["IV-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_iv_sound_final_weak_verb(data, args, rad1, rad2, nil) end

conjugations["IV-hollow"] = function(data, args, rad1, rad2, rad3) -- verbal noun local vn = HAMZA .. I .. rad1 .. AA .. rad3 .. AH .. UNS

-- various stem bases local past_stem_base = HAMZA .. A .. rad1 local nonpast_stem_base = rad1 local ps_past_stem_base = HAMZA .. U .. rad1

-- make parts make_augmented_hollow_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "IV") end

conjugations["IV-geminate"] = function(data, args, rad1, rad2, rad3) local vn = HAMZA .. I .. rad1 .. SK .. rad2 .. AA .. rad2 .. UNS

-- various stem bases local past_stem_base = HAMZA .. A .. rad1 local nonpast_stem_base = rad1 local ps_past_stem_base = HAMZA .. U .. rad1

-- make parts make_augmented_geminate_verb(data, args, rad2,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "IV") end

conjugations["V-sound"] = function(data, args, rad1, rad2, rad3) make_form_ii_v_sound_final_weak_verb(data, args, rad1, rad2, rad3, "V") end

conjugations["V-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_ii_v_sound_final_weak_verb(data, args, rad1, rad2, nil, "V") end

conjugations["VI-sound"] = function(data, args, rad1, rad2, rad3) make_form_iii_vi_sound_final_weak_verb(data, args, rad1, rad2, rad3, "VI") end

conjugations["VI-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_iii_vi_sound_final_weak_verb(data, args, rad1, rad2, nil, "VI") end

conjugations["VI-geminate"] = function(data, args, rad1, rad2, rad3) make_form_iii_vi_geminate_verb(data, args, rad1, rad2, "VI") end

-- Make a verbal noun of the general form that applies to forms VII and above. -- RAD12 is the first consonant cluster (after initial اِ) and RAD34 is the -- second consonant cluster. RAD5 is the final consonant, or nil for final-weak -- verbs. local function high_form_verbal_noun(rad12, rad34, rad5) return "اِ" .. rad12 .. I .. rad34 .. AA .. (rad5 == nil and HAMZA or rad5) .. UNS end

-- Populate a sound or final-weak verb for any of the various high-numbered -- augmented forms (form VII and up) that have up to 5 consonants in two -- clusters in the stem and the same pattern of vowels between. -- Some of these consonants in certain verb parts are w's, which leads to apparent -- anomalies in certain stems of these parts, but these anomalies are handled -- automatically in postprocessing, where we resolve sequences of iwC -> īC, -- uwC -> ūC, w + sukūn + w -> w + shadda. -- -- RAD12 is the first consonant cluster (after initial اِ) and RAD34 is the -- second consonant cluster. RAD5 is the final consonant, or nil for final-weak -- verbs. local function make_high_form_sound_final_weak_verb(data, args, rad12, rad34, rad5, form) local final_weak = rad5 == nil local vn = high_form_verbal_noun(rad12, rad34, rad5)

-- various stem bases local nonpast_stem_base = rad12 .. A .. rad34 local past_stem_base = "اِ" .. nonpast_stem_base local ps_past_stem_base = "اُ" .. rad12 .. U .. rad34

-- make parts make_augmented_sound_final_weak_verb(data, args, rad5,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form) end

-- Make form VII sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil. local function make_form_vii_sound_final_weak_verb(data, args, rad1, rad2, rad3) make_high_form_sound_final_weak_verb(data, args, "نْ" .. rad1, rad2, rad3, "VII") end

conjugations["VII-sound"] = function(data, args, rad1, rad2, rad3) make_form_vii_sound_final_weak_verb(data, args, rad1, rad2, rad3) end

conjugations["VII-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_vii_sound_final_weak_verb(data, args, rad1, rad2, nil) end

conjugations["VII-hollow"] = function(data, args, rad1, rad2, rad3) local nrad1 = "نْ" .. rad1 local vn = high_form_verbal_noun(nrad1, Y, rad3)

-- various stem bases local nonpast_stem_base = nrad1 local past_stem_base = "اِ" ..nonpast_stem_base local ps_past_stem_base = "اُ" .. nrad1

-- make parts make_augmented_hollow_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "VII") end

conjugations["VII-geminate"] = function(data, args, rad1, rad2, rad3) local nrad1 = "نْ" .. rad1 local vn = high_form_verbal_noun(nrad1, rad2, rad2)

-- various stem bases local nonpast_stem_base = nrad1 .. A	local past_stem_base = "اِ" .. nonpast_stem_base local ps_past_stem_base = "اُ" .. nrad1 .. U

-- make parts make_augmented_geminate_verb(data, args, rad2,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "VII") end

-- Join the infixed tā' (ت) to the first radical in form VIII verbs. This may -- cause assimilation of the tā' to the radical or in some cases the radical to -- the tā'. local function join_ta(rad) if rad == W or rad == Y or rad == "ت" then return "تّ" elseif rad == "د" then return "دّ" elseif rad == "ث" then return "ثّ" elseif rad == "ذ" then return "ذّ" elseif rad == "ز" then return "زْد" elseif rad == "ص" then return "صْط" elseif rad == "ض" then return "ضْط" elseif rad == "ط" then return "طّ" elseif rad == "ظ" then return "ظّ" else return rad .. SK .. "ت" end end

-- Return Form VIII verbal noun. RAD3 is nil for final-weak verbs. If RAD1 is -- hamza, there are two alternatives. local function form_viii_verbal_noun(rad1, rad2, rad3) local vn = high_form_verbal_noun(join_ta(rad1), rad2, rad3) if rad1 == HAMZA then return {vn, high_form_verbal_noun(Y .. T, rad2, rad3)} else return {vn} end end

-- Make form VIII sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil. local function make_form_viii_sound_final_weak_verb(data, args, rad1, rad2, rad3) -- check for irregular verb اِتَّخَذَ if axadh_radicals(rad1, rad2, rad3) then data.irregular = true rad1 = T	end make_high_form_sound_final_weak_verb(data, args, join_ta(rad1), rad2, rad3,		"VIII")

-- Add alternative parts if verb is first-hamza. Any duplicates are -- removed in get_spans. if rad1 == HAMZA then local vn = form_viii_verbal_noun(rad1, rad2, rad3) local past_stem_base2 = "اِيتَ" .. rad2 local nonpast_stem_base2 = join_ta(rad1) .. A .. rad2 local ps_past_stem_base2 = "اُوتُ" .. rad2 make_augmented_sound_final_weak_verb(data, args, rad3,			past_stem_base2, nonpast_stem_base2, ps_past_stem_base2, vn, "VIII") end end

conjugations["VIII-sound"] = function(data, args, rad1, rad2, rad3) make_form_viii_sound_final_weak_verb(data, args, rad1, rad2, rad3) end

conjugations["VIII-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_viii_sound_final_weak_verb(data, args, rad1, rad2, nil) end

conjugations["VIII-hollow"] = function(data, args, rad1, rad2, rad3) local vn = form_viii_verbal_noun(rad1, Y, rad3)

-- various stem bases local nonpast_stem_base = join_ta(rad1) local past_stem_base = "اِ" .. nonpast_stem_base local ps_past_stem_base = "اُ" .. nonpast_stem_base

-- make parts make_augmented_hollow_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "VIII")

-- Add alternative parts if verb is first-hamza. Any duplicates are -- removed in get_spans. if rad1 == HAMZA then local past_stem_base2 = "اِيت" local nonpast_stem_base2 = nonpast_stem_base local ps_past_stem_base2 = "اُوت" make_augmented_hollow_verb(data, args, rad3,			past_stem_base2, nonpast_stem_base2, ps_past_stem_base2, vn, "VIII") end end

conjugations["VIII-geminate"] = function(data, args, rad1, rad2, rad3) local vn = form_viii_verbal_noun(rad1, rad2, rad2)

-- various stem bases local nonpast_stem_base = join_ta(rad1) .. A	local past_stem_base = "اِ" .. nonpast_stem_base local ps_past_stem_base = "اُ" .. join_ta(rad1) .. U

-- make parts make_augmented_geminate_verb(data, args, rad2,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "VIII")

-- Add alternative parts if verb is first-hamza. Any duplicates are -- removed in get_spans. if rad1 == HAMZA then local past_stem_base2 = "اِيتَ" local nonpast_stem_base2 = nonpast_stem_base local ps_past_stem_base2 = "اُوتُ" make_augmented_geminate_verb(data, args, rad2,			past_stem_base2, nonpast_stem_base2, ps_past_stem_base2, vn, "VIII") end end

conjugations["IX-sound"] = function(data, args, rad1, rad2, rad3) local ipref = "اِ" local vn = ipref .. rad1 .. SK .. rad2 .. I .. rad3 .. AA .. rad3 .. UNS

-- various stem bases local nonpast_stem_base = rad1 .. SK .. rad2 .. A	local past_stem_base = ipref .. nonpast_stem_base local ps_past_stem_base = "اُ" .. rad1 .. SK .. rad2 .. U

-- make parts make_augmented_geminate_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "IX") end

conjugations["IX-final-weak"] = function(data, args, rad1, rad2, rad3) error("FIXME: Not yet implemented") end

-- Populate a sound or final-weak verb for any of the various high-numbered -- augmented forms that have 5 consonants in the stem and the same pattern of -- vowels. Some of these consonants in certain verb parts are w's, which leads to -- apparent anomalies in certain stems of these parts, but these anomalies -- are handled automatically in postprocessing, where we resolve sequences of -- iwC -> īC, uwC -> ūC, w + sukūn + w -> w + shadda. local function make_high5_form_sound_final_weak_verb(data, args, rad1, rad2, rad3, rad4, rad5, form) make_high_form_sound_final_weak_verb(data, args, rad1 .. SK .. rad2,		rad3 .. SK .. rad4, rad5, form) end

-- Make form X sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil. local function make_form_x_sound_final_weak_verb(data, args, rad1, rad2, rad3) make_high5_form_sound_final_weak_verb(data, args, S, T, rad1, rad2, rad3, "X") -- check for irregular verb اِسْتَحْيَا (also اِسْتَحَى) if hayy_radicals(rad1, rad2, rad3 or Y) then data.irregular = true -- Add alternative entries to the verbal paradigms. Any duplicates are -- removed in get_spans. make_high_form_sound_final_weak_verb(data, args, S .. SK .. T, rad1, rad3, "X") end end

conjugations["X-sound"] = function(data, args, rad1, rad2, rad3) make_form_x_sound_final_weak_verb(data, args, rad1, rad2, rad3) end

conjugations["X-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_x_sound_final_weak_verb(data, args, rad1, rad2, nil) end

conjugations["X-hollow"] = function(data, args, rad1, rad2, rad3) local vn = "اِسْتِ" .. rad1 .. AA .. rad3 .. AH .. UNS

-- various stem bases local past_stem_base = "اِسْتَ" .. rad1 local nonpast_stem_base = "سْتَ" .. rad1 local ps_past_stem_base = "اُسْتُ" .. rad1

-- make parts make_augmented_hollow_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "X") end

conjugations["X-geminate"] = function(data, args, rad1, rad2, rad3) local vn = "اِسْتِ" .. rad1 .. SK .. rad2 .. AA .. rad2 .. UNS

-- various stem bases local past_stem_base = "اِسْتَ" .. rad1 local nonpast_stem_base = "سْتَ" .. rad1 local ps_past_stem_base = "اُسْتُ" .. rad1

-- make parts make_augmented_geminate_verb(data, args, rad2,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "X") end

conjugations["XI-sound"] = function(data, args, rad1, rad2, rad3) local ipref = "اِ" local vn = ipref .. rad1 .. SK .. rad2 .. II .. rad3 .. AA .. rad3 .. UNS

-- various stem bases local nonpast_stem_base = rad1 .. SK .. rad2 .. AA local past_stem_base = ipref .. nonpast_stem_base local ps_past_stem_base = "اُ" .. rad1 .. SK .. rad2 .. UU

-- make parts make_augmented_geminate_verb(data, args, rad3,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "XI") end

-- probably no form XI final-weak, since already geminate in form; would behave as XI-sound

-- Make form XII sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil. local function make_form_xii_sound_final_weak_verb(data, args, rad1, rad2, rad3) make_high5_form_sound_final_weak_verb(data, args, rad1, rad2, W, rad2, rad3, "XII") end

conjugations["XII-sound"] = function(data, args, rad1, rad2, rad3) make_form_xii_sound_final_weak_verb(data, args, rad1, rad2, rad3) end

conjugations["XII-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_xii_sound_final_weak_verb(data, args, rad1, rad2, nil) end

-- Make form XIII sound or final-weak verb. Final-weak verbs are identified -- by RAD3 = nil. local function make_form_xiii_sound_final_weak_verb(data, args, rad1, rad2, rad3) make_high5_form_sound_final_weak_verb(data, args, rad1, rad2, W, W, rad3, "XIII") end

conjugations["XIII-sound"] = function(data, args, rad1, rad2, rad3) make_form_xiii_sound_final_weak_verb(data, args, rad1, rad2, rad3) end

conjugations["XIII-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_xiii_sound_final_weak_verb(data, args, rad1, rad2, nil) end

-- Make a form XIV or XV sound or final-weak verb. Last radical appears twice -- (if`anlala / yaf`anlilu) so if it were w or y you'd get if`anwā / yaf`anwī -- or if`anyā / yaf`anyī, i.e. we need the identity of the radical, so the -- normal trick of passing nil as rad3 into these types of functions won't work. -- Instead we pass the full radical as well as a flag indicating whether the -- verb is final-weak. The last radical need not be w or y; in fact this is -- exactly what form XV is about. local function make_form_xiv_xv_sound_final_weak_verb(data, args, rad1, rad2, rad3, final_weak, form) local lastrad = not final_weak and rad3 or nil make_high5_form_sound_final_weak_verb(data, args, rad1, rad2, N, rad3, lastrad, form) end

conjugations["XIV-sound"] = function(data, args, rad1, rad2, rad3) make_form_xiv_xv_sound_final_weak_verb(data, args, rad1, rad2, rad3, false, "XIV") end

conjugations["XIV-final-weak"] = function(data, args, rad1, rad2, rad3) make_form_xiv_xv_sound_final_weak_verb(data, args, rad1, rad2, rad3, true, "XIV") end

conjugations["XV-sound"] = function(data, args, rad1, rad2, rad3) make_form_xiv_xv_sound_final_weak_verb(data, args, rad1, rad2, rad3, true, "XV") end

-- probably no form XV final-weak, since already final-weak in form; would behave as XV-sound

-- Make form Iq or IIq sound or final-weak verb. Final-weak verbs are identified -- by RAD4 = nil. FORM distinguishes Iq from IIq. local function make_form_iq_iiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, rad4, form) local final_weak = rad4 == nil local vn = form == "IIq" and "تَ" .. rad1 .. A .. rad2 .. SK .. rad3 .. (final_weak and IN or U .. rad4 .. UNS) or rad1 .. A .. rad2 .. SK .. rad3 .. (final_weak and AAH or A .. rad4 .. AH) .. UNS local ta_pref = form == "IIq" and "تَ" or "" local tu_pref = form == "IIq" and "تُ" or ""

-- various stem bases local past_stem_base = ta_pref .. rad1 .. A .. rad2 .. SK .. rad3 local nonpast_stem_base = past_stem_base local ps_past_stem_base = tu_pref .. rad1 .. U .. rad2 .. SK .. rad3

-- make parts make_augmented_sound_final_weak_verb(data, args, rad4,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, form) end

conjugations["Iq-sound"] = function(data, args, rad1, rad2, rad3, rad4) make_form_iq_iiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, rad4, "Iq") end

conjugations["Iq-final-weak"] = function(data, args, rad1, rad2, rad3, rad4) make_form_iq_iiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, nil, "Iq") end

conjugations["IIq-sound"] = function(data, args, rad1, rad2, rad3, rad4) make_form_iq_iiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, rad4, "IIq") end

conjugations["IIq-final-weak"] = function(data, args, rad1, rad2, rad3, rad4) make_form_iq_iiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, nil, "IIq") end

-- Make form IIIq sound or final-weak verb. Final-weak verbs are identified -- by RAD4 = nil. local function make_form_iiiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, rad4) make_high5_form_sound_final_weak_verb(data, args, rad1, rad2, N, rad3, rad4, "IIIq") end

conjugations["IIIq-sound"] = function(data, args, rad1, rad2, rad3, rad4) make_form_iiiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, rad4) end

conjugations["IIIq-final-weak"] = function(data, args, rad1, rad2, rad3, rad4) make_form_iiiq_sound_final_weak_verb(data, args, rad1, rad2, rad3, nil) end

conjugations["IVq-sound"] = function(data, args, rad1, rad2, rad3, rad4) local ipref = "اِ" local vn = ipref .. rad1 .. SK .. rad2 .. I .. rad3 .. SK .. rad4 .. AA .. rad4 .. UNS

-- various stem bases local past_stem_base = ipref .. rad1 .. SK .. rad2 .. A .. rad3 local nonpast_stem_base = rad1 .. SK .. rad2 .. A .. rad3 local ps_past_stem_base = "اُ" .. rad1 .. SK .. rad2 .. U .. rad3

-- make parts make_augmented_geminate_verb(data, args, rad4,		past_stem_base, nonpast_stem_base, ps_past_stem_base, vn, "IVq") end

-- probably no form IVq final-weak, since already geminate in form; would behave as IVq-sound

--- --                      Guts of main conjugation function                   -- ---

local function initialize_categories(data, form, weakness, rad1, rad2, rad3, rad4) -- We have to distinguish weakness by form and weakness by conjugation. -- Weakness by form merely indicates the presence of weak letters in -- certain positions in the radicals. Weakness by conjugation is related -- to how the verbs are conjugated. For example, form-II verbs that are -- "hollow by form" (middle radical is wāw or yāʾ) are conjugated as sound -- verbs. Another example: form-I verbs with initial wāw are "assimilated	-- by form" and most are assimilated by conjugation as well, but a few -- are sound by conjugation, e.g. wajuha yawjuhu "to be distinguished" -- (rather than wajuha yajuhu); similarly for some hollow-by-form verbs -- in various forms, e.g. form VIII izdawaja yazdawiju "to be in pairs" -- (rather than izdāja yazdāju). When most references say just plain -- "hollow" or "assimilated" or whatever verbs, they mean by form, so -- we name the categories appropriately, where e.g. "Arabic hollow verbs" -- means by form, "Arabic hollow verbs by conjugation" means by -- conjugation. table.insert(data.categories, "Arabic form-" .. form .. " verbs") table.insert(data.headword_categories, "Arabic form-" .. form .. " verbs") table.insert(data.categories, "Arabic " .. weakness .. " verbs by conjugation") table.insert(data.headword_categories, "Arabic " .. weakness .. " verbs by conjugation") if form_is_quadriliteral(form) then table.insert(data.categories, "Arabic verbs with quadriliteral roots") table.insert(data.headword_categories, "Arabic verbs with quadriliteral roots") end local formweak = {} if is_waw_ya(rad1) then table.insert(formweak, "assimilated") end if is_waw_ya(rad2) and rad4 == nil then table.insert(formweak, "hollow") end if is_waw_ya(rad4) or rad4 == nil and is_waw_ya(rad3) then table.insert(formweak, "final-weak") end if rad4 == nil and rad2 == rad3 then table.insert(formweak, "geminate") end if rad1 == HAMZA or rad2 == HAMZA or rad3 == HAMZA or rad4 == HAMZA then table.insert(formweak, "hamzated") end if #formweak == 0 then table.insert(formweak, "sound") end for _, fw in ipairs(formweak) do table.insert(data.categories, "Arabic " .. fw .. " form-" .. form .. " verbs") table.insert(data.categories, "Arabic " .. fw .. " verbs") table.insert(data.headword_categories, "Arabic " .. fw .. " form-" .. form .. " verbs") table.insert(data.headword_categories, "Arabic " .. fw .. " verbs") end

local function radical_is_ambiguous(rad) return rad == "t" or rad == "w" or rad == "y" end local function radical_is_weak(rad) return rad == W or rad == Y or rad == HAMZA end

local ur1, ur2, ur3, ur4 = data.unreg_rad1, data.unreg_rad2, data.unreg_rad3, data.unreg_rad4 -- Create headword categories based on the radicals. Do the following before -- converting the Latin radicals into Arabic ones so we distinguish -- between ambiguous and non-ambiguous radicals. if radical_is_ambiguous(ur1) or radical_is_ambiguous(ur2) or			radical_is_ambiguous(ur3) or radical_is_ambiguous(ur4) then table.insert(data.headword_categories,			"Arabic verbs with ambiguous radicals") end if radical_is_weak(ur1) then table.insert(data.headword_categories, "Arabic form-" .. form ..			" verbs with " .. ur1 .. " as first radical") end if radical_is_weak(ur2) then table.insert(data.headword_categories, "Arabic form-" .. form ..			" verbs with " .. ur2 .. " as second radical") end if radical_is_weak(ur3) then table.insert(data.headword_categories, "Arabic form-" .. form ..			" verbs with " .. ur3 .. " as third radical") end if radical_is_weak(ur4) then table.insert(data.headword_categories, "Arabic form-" .. form ..			" verbs with " .. ur4 .. " as fourth radical") end

if data.passive == "only" then table.insert(data.categories, "Arabic passive verbs") table.insert(data.categories, "Arabic verbs with full passive") elseif data.passive == "only-impers" then table.insert(data.categories, "Arabic passive verbs") table.insert(data.categories, "Arabic verbs with impersonal passive") elseif data.passive == "impers" then table.insert(data.categories, "Arabic verbs with impersonal passive") elseif data.passive then table.insert(data.categories, "Arabic verbs with full passive") else table.insert(data.categories, "Arabic verbs lacking passive forms") end end

-- given form, weakness and radicals, check to make sure the radicals present -- are allowable for the weakness. Hamzas on alif/wāw/yāʾ seats are never -- allowed (should always appear as hamza-on-the-line), and various weaknesses -- have various strictures on allowable consonants. local function check_radicals(form, weakness, rad1, rad2, rad3, rad4) local function hamza_check(index, rad) if rad == HAMZA_ON_ALIF or rad == HAMZA_UNDER_ALIF or			rad == HAMZA_ON_W or rad == HAMZA_ON_Y then error("Radical " .. index .. " is " .. rad .. " but should be ء (hamza on the line)") end end local function check_waw_ya(index, rad) if rad ~= W and rad ~= Y then error("Radical " .. index .. " is " .. rad .. " but should be و or ي") end end local function check_not_waw_ya(index, rad) if rad == W or rad == Y then error("In a sound verb, radical " .. index .. " should not be و or ي") end end hamza_check(rad1) hamza_check(rad2) hamza_check(rad3) hamza_check(rad4) if weakness == "assimilated" or weakness == "assimilated+final-weak" then if rad1 ~= W then error("Radical 1 is " .. rad1 .. " but should be و") end -- don't check that non-assimilated form I verbs don't have wāw as their -- first radical because some form-I verbs exist where a first-radical wāw -- behaves as sound, e.g. wajuha yawjuhu "to be distinguished". end if weakness == "final-weak" or weakness == "assimilated+final-weak" then if rad4 then check_waw_ya(4, rad4) else check_waw_ya(3, rad3) end elseif form_supports_final_weak(form) then -- non-final-weak verbs cannot have weak final radical if there's a corresponding -- final-weak verb category. I think this is safe. We may have problems with -- ḥayya/ḥayiya yaḥyā if we treat it as a geminate verb. if rad4 then check_not_waw_ya(4, rad4) else check_not_waw_ya(3, rad3) end end if weakness == "hollow" then check_waw_ya(2, rad2) -- don't check that non-hollow verbs in forms that support hollow verbs -- don't have wāw or yāʾ as their second radical because some verbs exist -- where a middle-radical wāw/yāʾ behaves as sound, e.g. form-VIII izdawaja -- "to be in pairs". end if weakness == "geminate" then if rad4 then error("Internal error. No geminate quadrilaterals, should not be seen.") end if rad2 ~= rad3 then error("Weakness is geminate; radical 3 is " .. rad3 .. " but should be same as radical 2 " .. rad2 .. ".") end elseif form_supports_geminate(form) then -- non-geminate verbs cannot have second and third radical same if there's -- a corresponding geminate verb category. I think this is safe. We		-- don't fuss over double wāw or double yāʾ because this could legitimately -- be a final-weak verb with middle wāw/yāʾ, treated as sound. if rad4 then error("Internal error. No quadrilaterals should support geminate verbs.") end if rad2 == rad3 and not is_waw_ya(rad2) then error("Weakness is '" .. weakness .. "'; radical 2 and 3 are same at " .. rad2 .. " but should not be; consider making weakness 'geminate'") end end end

-- Determine weakness from radicals local function weakness_from_radicals(form, rad1, rad2, rad3, rad4) local weakness = nil local quadlit = rmatch(form, "q$") -- If weakness unspecified, derive from radicals. if not quadlit then if is_waw_ya(rad3) and rad1 == W and form == "I" then weakness = "assimilated+final-weak" elseif is_waw_ya(rad3) and form_supports_final_weak(form) then weakness = "final-weak" elseif rad2 == rad3 and form_supports_geminate(form) then weakness = "geminate" elseif is_waw_ya(rad2) and form_supports_hollow(form) then weakness = "hollow" elseif rad1 == W and form == "I" then weakness = "assimilated" else weakness = "sound" end else if is_waw_ya(rad4) then weakness = "final-weak" else weakness = "sound" end end return weakness end

-- Guts of conjugation functions. Shared between and, among others. ARGS is the -- arguments after processing by Module:parameters. ARGIND is the numbered argument holding the verb form (either 1 -- or 2); if form is I, the next two arguments are the past and non-past vowels; afterwards are the (optional) radicals. -- Return five values: DATA, FORM, WEAKNESS, PAST_VOWEL, NONPAST_VOWEL. The last two are arrays of vowels (each one 'a', -- 'i' or 'u'), since there may be more than one, or none in the case of non-form-I verbs. local function conjugate(args, argind) local data = {forms = {}, categories = {}, headword_categories = {}}

title = mw.title.getCurrentTitle NAMESPACE = title.nsText PAGENAME = ( NAMESPACE == "Appendix" and title.subpageText ) or title.text

local conj_type = args[argind] or error("Form (conjugation type) has not been specified. " ..			"Please pass a value to parameter " .. argind ..			" in the template invocation.")

-- derive form and weakness from conj type local form, weakness if rfind(conj_type, "%-") then local form_weakness = rsplit(conj_type, "%-") form = form_weakness[1] table.remove(form_weakness, 1) weakness = table.concat(form_weakness, "-") else form = conj_type weakness = nil end

-- convert numeric forms to Roman numerals -- no longer supported -- form = canonicalize_form(form)

-- check for quadriliteral form (Iq, IIq, IIIq, IVq) local quadlit = rmatch(form, "q$")

-- get radicals and past/non-past vowel local rad1, rad2, rad3, rad4, past_vowel, nonpast_vowel if form == "I" then past_vowel = args[argind + 1] nonpast_vowel = args[argind + 2] local function splitvowel(vowelspec) if vowelspec == nil then vowelspec = {} else vowelspec = rsplit(vowelspec, ",") end return vowelspec end -- allow multiple past or non-past vowels separated by commas, e.g.		-- in farada/faruda yafrudu "to be single" past_vowel = splitvowel(past_vowel) nonpast_vowel = splitvowel(nonpast_vowel) rad1 = args[argind + 3] or args["I"] rad2 = args[argind + 4] or args["II"] rad3 = args[argind + 5] or args["III"] else rad1 = args[argind + 1] or args["I"] rad2 = args[argind + 2] or args["II"] rad3 = args[argind + 3] or args["III"] if quadlit then rad4 = args[argind + 4] or args["IV"] end end

-- Default any unspecified radicals to radicals determined from the -- headword. The return radicals may have Latin letters in them (w, t, y)	-- to indicate ambiguous radicals that should be converted to the -- corresponding Arabic letters. --	-- Only call infer_radicals if at least one radical unspecified, -- because infer_radicals will throw an error if the headword is -- malformed for the form, and we don't want that to happen (e.g. we might	-- be called from a test page). if not rad1 or not rad2 or not rad3 or quadlit and not rad4 then local wkness, r1, r2, r3, r4 = export.infer_radicals(PAGENAME, form) -- Use the inferred weakness if we don't override any of the inferred -- radicals with something else, i.e. for each user-specified radical, -- either it's nil (was not specified) or same as inferred radical. -- That way we will correctly set the weakness to sound in cases like -- layisa "to be valiant", 'aḥwaja "to need", istahwana "to consider easy", -- izdawaja "to be in pairs", etc.		local use_wkness = (not rad1 or rad1 == r1) and (not rad2 or rad2 == r2) and (not rad3 or rad3 == r3) and (not rad4 or rad4 == r4) rad1 = rad1 or r1		rad2 = rad2 or r2		rad3 = rad3 or r3		rad4 = rad4 or r4

-- For most ambiguous radicals, the choice of radical doesn't matter -- because it doesn't affect the conjugation one way or another. -- For form I hollow verbs, however, it definitely does. In fact, the -- choice of radical is critical even beyond the past and non-past -- vowels because it affects the form of the passive participle. -- So, check for this, try to guess if necessary from non-past vowel, -- else signal an error, requiring that the radical be specified -- explicitly. This will happen when the non-past vowel isn't specified -- and also when it's "a", from which the radical cannot be inferred. -- Do this check here rather than in infer_radicals so that we don't -- get an error if the appropriate radical is given but not others. if form == "I" and (rad2 == "w" or rad2 == "y") then if m_table.contains(nonpast_vowel, "i") then rad2 = Y			elseif m_table.contains(nonpast_vowel, "u") then rad2 = W			else error("Unable to guess middle radical of hollow form I verb; " ..					"need to specify radical explicitly") end end

-- If weakness unspecified, then maybe default to weakness determined -- from headword. We do this specifically when some radicals are -- unspecified and all specified radicals are the same as the -- corresponding inferred radicals, i.e. the specified radicals (if any) -- don't provide any new information. When this isn't the case, and -- the specified radicals override the inferred radicals with something -- else, the inferred weakness may be wrong, so we figure out -- the weakness below by ourselves, based on the combination of any -- user-specified and inferred radicals. --		-- The reason for using the inferred weakness when possible is that -- it may be more accurate than the weakness we derive below, in		-- particular with verbs like layisa "to be courageous", -- `awira "to be one-eyed", 'aḥwaja "to need", istajwaba "to interrogate", -- izdawaja "to be in pairs", with a weak vowel in a sound conjugation. -- The weakness derived below from the radicals would be hollow but the -- weakness inferred in infer_radicals is (correctly) sound. if use_wkness then weakness = weakness or wkness end end

-- Store unregularized radicals for later use in creating categories data.unreg_rad1 = rad1 data.unreg_rad2 = rad2 data.unreg_rad3 = rad3 data.unreg_rad4 = rad4

-- Convert the Latin radicals indicating ambiguity into the corresponding -- Arabic radicals. local function regularize_inferred_radical(rad) if rad == "t" then return T		elseif rad == "w" then return W		elseif rad == "y" then return Y		else return rad end end

rad1 = regularize_inferred_radical(rad1) rad2 = regularize_inferred_radical(rad2) rad3 = regularize_inferred_radical(rad3) rad4 = regularize_inferred_radical(rad4)

data.rad1 = rad1 data.rad2 = rad2 data.rad3 = rad3 data.rad4 = rad4

-- Old code, default radicals to ف-ع-ل or variants.

--if not quadlit then --	-- default radicals to ف-ع-ل (or ف-ل-ل for geminate, or with the	--	-- appropriate radical replaced by wāw for assimilated/hollow/final-weak) --	rad1 = rad1 or	--		(weakness == "assimilated" or weakness == "assimilated+final-weak") and W or "ف" --	rad2 = rad2 or weakness == "hollow" and W or	--		weakness == "geminate" and "ل" or "ع" --	rad3 = rad3 or (weakness == "final-weak" or weakness == "assimilated+final-weak") and W or	--		weakness == "geminate" and rad2 or "ل" --else --	-- default to ف-ع-ل-ق (or ف-ع-ل-و for final-weak) --	rad1 = rad1 or "ف" --	rad2 = rad2 or "ع" --	rad3 = rad3 or "ل" --	rad4 = rad4 or weakness == "final-weak" and W or "ق" --end

if weakness == nil then weakness = weakness_from_radicals(form, rad1, rad2, rad3, rad4) end -- Error if radicals are wrong given the weakness. More likely to happen -- if the weakness is explicitly given rather than inferred. Will also -- happen if certain incorrect letters are included as radicals e.g. -- hamza on top of various letters, alif maqṣūra, tā' marbūṭa. check_radicals(form, weakness, rad1, rad2, rad3, rad4)

-- check to see if an argument ends in a ?. If so, strip the ? and return -- true. Otherwise, return false. local function check_for_uncertainty(arg) if args[arg] and rfind(args[arg], "%?$") then args[arg] = rsub(args[arg], "%?$", "") if args[arg] == "" then args[arg] = nil end return true else return false end end

-- allow a ? at the end of vn= and passive=; if so, putting the page into -- special categories indicating the need to check the property in -- question, and remove the ?. Also put into category for vn= if empty -- and form is I.	if check_for_uncertainty("vn") or form == "I" and not args["vn"] then table.insert(data.categories, "Arabic verbs needing verbal noun checked") data.vn_uncertain = true end if check_for_uncertainty("passive") then table.insert(data.categories, "Arabic verbs needing passive checked") data.passive_uncertain = true end

-- parse value of passive. --	-- if the value is "impers", the verb has only impersonal passive; -- if the value is "only", the verb has only a passive, no active; -- if the value is "only-impers", the verb has only an impersonal passive; -- if the value is "yes" or variants, verb has a passive; -- if the value is "no" or variants, the verb has no passive. -- If not specified, default is yes, but no for forms VII, IX, -- XII - XV and IIq - IVq, and "impers" for form VI. local passive = args["passive"] if passive == "impers" or passive == "only" or passive == "only-impers" then elseif not passive then passive = form_probably_impersonal_passive(form) and "impers" or			not form_probably_no_passive(form, weakness, past_vowel,				nonpast_vowel) and true or false else passive = yesno(passive, "unknown") if passive == "unknown" then error("Unrecognized value '" .. args["passive"] ..				"' to argument passive=; use 'impers', 'only', 'only-impers', " ..				"'yes'/'y'/'true'/'1' or 'no'/'n'/'false'/'0'") end end data.passive = passive

data.noimp = yesno(args["noimp"], false) if data.noimp then table.insert(data.categories, "Arabic verbs lacking imperative forms") end

-- Initialize categories related to form and weakness. initialize_categories(data,	form, weakness, rad1, rad2, rad3, rad4)

-- Reconstruct conjugation type from form and (possibly inferred) weakness. conj_type = form .. "-" .. weakness

-- Check that the conjugation type is recognized. if not conjugations[conj_type] then error("Unknown conjugation type '" .. conj_type .. "'") end

-- Actually conjugate the verb. The signature of the conjugation function -- is different for form-I verbs, non-form-I triliteral verbs, and -- quadriliteral verbs. --	-- The way the conjugation functions work is they always add entries to the -- appropriate parts of the paradigm (each of which is an array), rather -- than setting the values. This makes it possible to call more than one -- conjugation function and essentially get a paradigm of the "either	-- A or B" kind. Doing this may insert duplicate entries into a particular -- paradigm part, but this is not a problem because we remove duplicate -- entries (in get_spans) before generating the actual table. if quadlit then conjugations[conj_type](data, args, rad1, rad2, rad3, rad4) elseif form ~= "I" then conjugations[conj_type](data, args, rad1, rad2, rad3) else -- For Form-I verbs, we also pass in the past and non-past vowels. -- There may be more than one of each in case of alternative possible -- conjugations. In such cases, we loop over the sets of vowels, -- calling the appropriate conjugation function for each combination -- of past and non-past vowel.

-- If the past or non-past vowel is unspecified, its value will be -- an empty array. In such a case, we still want to iterate once, -- passing in nil. Ideally, we'd convert empty arrays into one-element -- arrays holding the value nil, but Lua doesn't let you put the -- value nil into an array. To work around this we convert each array -- to an array of one-element arrays and fetch the first item of the -- inner array when we encounter it. Corresponding to nil will -- be an empty array, and fetching its first item will indeed -- return nil. local function convert_to_nested_array(array) if #array == 0 then return – else local retval = {} for _, el in ipairs(array) do					table.insert(retval, {el}) end return retval end end local pv_nested = convert_to_nested_array(past_vowel) local npv_nested = convert_to_nested_array(nonpast_vowel) for i, pv in ipairs(pv_nested) do			for j, npv in ipairs(npv_nested) do				-- items were made into 1-element arrays so undo this conjugations[conj_type](data, args, rad1, rad2, rad3, pv[1], npv[1]) end end end

return data, form, weakness, past_vowel, nonpast_vowel end

--- --                   Functions to create inflection tables                  -- ---

-- array of substitutions; each element is a 2-entry array FROM, TO; do it -- this way so the concatenations only get evaluated once local postprocess_subs = { -- reorder short-vowel + shadda -> shadda + short-vowel for easier processing {"(" .. AIU .. ")" .. SH, SH .. "%1"},

--same letter separated by sukūn should instead use shadda- happens e.g. in kun-nā "we were".- {"(.)" .. SK .. "%1", "%1" .. SH},

assimilated verbs -- iw, iy -> ī (assimilated verbs) {I .. W .. SK, II}, {I .. Y .. SK, II}, -- uw, uy -> ū (assimilated verbs) {U .. W .. SK, UU}, {U .. Y .. SK, UU},

-- final -yā uses tall alif not alif maqṣūra -- {"(" .. Y .. SH .. "?" .. A .. ")" .. AMAQ, "%1" .. ALIF},

--- handle hamza assimilation - -- initial hamza + short-vowel + hamza + sukūn -> hamza + long vowel {HAMZA .. A .. HAMZA .. SK, HAMZA .. A .. ALIF}, {HAMZA .. I .. HAMZA .. SK, HAMZA .. I .. Y}, {HAMZA .. U .. HAMZA .. SK, HAMZA .. U .. W} }

-- Post-process verb parts to eliminate phonological anomalies. Many of the changes, -- particularly the tricky ones, involve converting hamza to have the proper -- seat. The rules for this are complicated and are documented on the -- Hamza Wikipedia page. In some cases there are alternatives allowed, -- and we handle them below by returning multiple possibilities. local function postprocess_term(term) -- if term is regular hyphen/dash, ndash or mdash, return mdash if term == "-" or term == "–" or term == "—" then return {"—"} -- mdash elseif term == "?" then return {"?"} end -- do the main post-processing, based on the pattern substitutions in	-- postprocess_subs for _, sub in ipairs(postprocess_subs) do		term = rsub(term, sub[1], sub[2]) end

if not rfind(term, HAMZA) then return {term} end term = rsub(term, HAMZA, HAMZA_PH) return ar_utilities.process_hamza(term) end

-- For each paradigm part, postprocess the entries, remove duplicates and -- return the set of Arabic and transliterated Latin entries as two return -- values. local function get_spans(part) if type(part) == "string" then part = {part} end local part_nondup = {} -- for each entry, postprocess it, which may potentially return -- multiple entries; insert each into an array, checking and -- omitting duplicates for _, entry in ipairs(part) do		for _, e in ipairs(postprocess_term(entry)) do			m_table.insertIfNot(part_nondup, e)		end end -- convert each individual entry into Arabic and Latin span local arabic_spans = {} local latin_spans = {} for _, entry in ipairs(part_nondup) do		table.insert(arabic_spans, entry) if entry ~= "—" and entry ~= "?" then -- multiple Arabic entries may map to the same Latin entry -- (happens particularly with variant ways of spelling hamza) m_table.insertIfNot(latin_spans, (lang:transliterate(entry))) end end return arabic_spans, latin_spans end

-- Make the conjugation table. Called from export.show. local function make_table(data, title, form, intrans) local forms = data.forms local arabic_spans_3sm_perf, _ if data.passive == "only" or data.passive == "only-impers" then arabic_spans_3sm_perf, _ = get_spans(forms["3sm-ps-perf"]) else arabic_spans_3sm_perf, _ = get_spans(forms["3sm-perf"]) end -- convert Arabic terms to spans for i, entry in ipairs(arabic_spans_3sm_perf) do arabic_spans_3sm_perf[i] = "" .. entry .. "" end -- concatenate spans local part_3sm_perf = ' ' .. table.concat(arabic_spans_3sm_perf, " or ") .. " "

-- compute # of verbal nouns before we collapse them local num_vns = type(forms["vn"]) == "table" and #forms["vn"] or 1

-- also extract list of verbal nouns and preceding text "verbal noun" or	-- "verbal nouns", for the conjugation table title local vn_spans, _ = get_spans(forms["vn"]) -- convert verbal nouns to spans for i, entry in ipairs(vn_spans) do vn_spans[i] = ' ' .. entry .. ' '	end local vn_list = #vn_spans == 0 and "?" or		table.concat(vn_spans, " or ") local vn_prefix = #vn_spans > 1 and "verbal nouns" or "verbal noun" local vn_text = vn_prefix .. " " .. vn_list

-- construct conjugation table title local title = 'Conjugation of ' .. part_3sm_perf .. (form == "I" and " (" .. title .. ", " .. vn_text .. ")" or " (" .. title .. ")")

-- Format and add transliterations to all parts for key, part in pairs(forms) do -- check for empty array, size-one array holding a dash or ? if #part > 0 then local arabic_spans, latin_spans = get_spans(part) -- convert Arabic terms to links for i, entry in ipairs(arabic_spans) do				local id				if part.ids then id = part.ids[i] end arabic_spans[i] = links(entry, nil, id) end for i, translit in ipairs(latin_spans) do				latin_spans[i] = require("Module:script utilities").tag_translit(translit, lang, "default") end -- concatenate spans forms[key] = ' ' .. table.concat(arabic_spans, " or ") .. " " .. " " ..				"" .. table.concat(latin_spans, " or ") .. " "		-- if no verbal nouns, it's normally because they're unknown or -- unspecified rather than non-existent. For an actually non-existent -- verbal noun, put a hyphen or mdash explicitly as the value of the -- paradigm part, and it will be handled appropriately (no attempt to		-- transliterate). elseif key == "vn" then forms[key] = "?" else forms[key] = "—" end end

local text = [=[ ]=] .. title .. [=[

]=]

-- Function used as replace arg of call to rsub. Replace the -- specified param with its (HTML) value. The param references appear -- as in the wikicode. Also call tag_text on Arabic text -- appearing as. local function repl(param) if rfind(param, "^[A-Za-z0-9_-]+$") then return data.forms[param] else return tag_text(param) end end

return rsub(text, "", repl) .. mw.getCurrentFrame:extensionTag{ name = "templatestyles", args = { src = "Template:ar-conj/style.css" } } end

--- --                             External entry points                        -- ---

local function add_conjugation_args(params, firstarg) params[firstarg] = {} params[firstarg + 1] = {} params[firstarg + 2] = {} params[firstarg + 3] = {} params[firstarg + 4] = {} params[firstarg + 5] = {} params["I"] = {} params["II"] = {} params["III"] = {} params["IV"] = {} params["vn"] = {} params["vn-id"] = {list = true, allow_holes = true, require_index = true} params["passive"] = {} params["variant"] = {} params["noimp"] = {type = "boolean"} end

-- Implement. function export.show(frame) local parargs = frame:getParent.args

local params = { ["intrans"] = {}, }	add_conjugation_args(params, 1)

local args = require("Module:parameters").process(parargs, params)

local data, form, weakness, past_vowel, nonpast_vowel = conjugate(args, 1)

-- if the value is "yes" or variants, the verb is intransitive; -- if the value is "no" or variants, the verb is transitive. -- If not specified, default is intransitive if passive == false or -- passive == "impers", else transitive. local intrans = args["intrans"] if not intrans then intrans = data.passive == false or data.passive == "impers" or data.passive == "only-impers" else intrans = yesno(intrans, "unknown") if intrans == "unknown" then error("Unrecognized value '" .. args["intrans"] ..				"' to argument intrans=; use 'yes'/'y'/'true'/'1' or 'no'/'n'/'false'/'0'") end end if intrans then table.insert(data.categories, "Arabic intransitive verbs") else table.insert(data.categories, "Arabic transitive verbs") end

-- initialize title, with weakness indicated by conjugation -- (FIXME should it be by form?) local title = "form-" .. form .. " " .. weakness

if data.passive == "only" or data.passive == "only-impers" then title = title .. " passive" end

if data.irregular then table.insert(data.categories, "Arabic irregular verbs") title = title .. " irregular" end

return make_table(data, title, form, intrans) .. require("Module:utilities").format_categories(data.categories, lang) end

-- Version of main entry point meant for calling from the debug console. -- An example call might be as follows: -- -- =p.show2({'I', 'a', 'u', 'ك', 'ت', 'ب'}) -- -- This is equivalent to the following template call: -- -- -- -- Note that the radicals were actually typed in with ك first, followed by ت -- and then ب, but they appear in opposite order due to right-to-left -- display issues. It's necessary to specify the radicals in the call, -- unlike in a template call where they are inferred from the page name, -- because there is (currently) no way to control the page name used in -- the radical-inference code, where it will appear as 'Module:ar-verb'. function export.show2(parargs, args) return export.show(debug_frame(parargs, args)) end

-- Implement. -- FIXME: Move this into Module:ar-headword. Standardize parameter handling with Module:parameters. Use standard -- functionality in Module:head. function export.headword(frame) local parargs = frame:getParent.args

local params = { ["head"] = {list = true, disallow_holes = true}, ["tr"] = {list = true, allow_holes = true}, ["useparam"] = {}, ["noimpf"] = {type = "boolean"}, ["impf"] = {}, ["impfhead"] = {}, ["impftr"] = {}, ["id"] = {}, ["sort"] = {}, }	add_conjugation_args(params, 1)

local args = require("Module:parameters").process(parargs, params)

local data, form, weakness, past_vowel, nonpast_vowel = conjugate(args, 1) local use_params = form == "I" or args["useparam"]

local arabic_3sm_perf, latin_3sm_perf local arabic_3sm_imperf, latin_3sm_imperf if data.passive == "only" or data.passive == "only-impers" then arabic_3sm_perf, latin_3sm_perf = get_spans(data.forms["3sm-ps-perf"]) arabic_3sm_imperf, latin_3sm_imperf = get_spans(data.forms["3sm-ps-impf"]) else arabic_3sm_perf, latin_3sm_perf = get_spans(data.forms["3sm-perf"]) arabic_3sm_imperf, latin_3sm_imperf = get_spans(data.forms["3sm-impf"]) end title = mw.title.getCurrentTitle NAMESPACE = title.nsText PAGENAME = ( NAMESPACE == "Appendix" and title.subpageText ) or title.text -- set to PAGENAME if left empty local heads, trs if use_params and form ~= "I" then table.insert(data.headword_categories, "Arabic augmented verbs with parameter override") end if use_params and (#args["head"] > 0 or args["tr"].maxindex > 0) then heads = args["head"] trs = args["tr"] if form == "I" then table.insert(data.headword_categories, "Arabic form-I verbs with headword perfect determined through param, not past vowel") end elseif form == "I" and #past_vowel == 0 then heads = {} table.insert(data.headword_categories, "Arabic form-I verbs with missing past vowel in headword") else -- Massive hack to get the order correct. It gets reversed for some -- reason, possibly due to being surrounded by lang=ar or -- class=Arabic headword, so reverse the order before concatenating. headrev = {} for _, ar in ipairs(arabic_3sm_perf) do			table.insert(headrev, 1, ar) end heads = {table.concat(headrev, " or ")} trs = {table.concat(latin_3sm_perf, " or ")} end

local form_text = ' ' .. form .. '  '

local noimpf = args["noimpf"] local impf_arabic, impf_tr if use_params and noimpf then impf_arabic = {} elseif use_params and args["impf"] then impf_arabic = args["impfhead"] or args["impf"] impf_tr = args["impftr"] or (lang:transliterate(impf_arabic)) impf_arabic = {impf_arabic} if form == "I" then table.insert(data.headword_categories, "Arabic form-I verbs with headword imperfect determined through param, not non-past vowel") end elseif form == "I" and #nonpast_vowel == 0 then impf_arabic = {} table.insert(data.headword_categories, "Arabic form-I verbs with missing non-past vowel in headword") else impf_arabic = arabic_3sm_imperf impf_tr = table.concat(latin_3sm_imperf, " or ") end

-- convert Arabic terms to bolded links for i, entry in ipairs(impf_arabic) do		impf_arabic[i] = links(entry, "bold") end -- create non-past text by concatenating Arabic spans and adding -- transliteration, but only if we can do it non-ambiguously (either we're	-- not form I or the non-past vowel was specified) local impf_text = "" if #impf_arabic > 0 then impf_text = ', non-past ' .. table.concat(impf_arabic, " or ") if impf_tr then impf_text = impf_text .. LRM .. " (" .. impf_tr .. ")" end end

return require("Module:headword").full_headword({lang = lang, pos_category = "verbs", categories = data.headword_categories,			heads = heads, translits = trs, sort_key = args["sort"], id = args["id"]}) .. form_text .. impf_text end

-- Version of headword entry point meant for calling from the debug console. -- See export.show2. function export.headword2(parargs, args) return export.headword(debug_frame(parargs, args)) end

-- Implementation of export.past3sm and export.past3sm_all. local function past3sm(parargs, doall) local params = {} add_conjugation_args(params, 1)

local args = require("Module:parameters").process(parargs, params)

local data, form, weakness, past_vowel, nonpast_vowel =	conjugate(args, 1)

local arabic_3sm_perf, latin_3sm_perf if data.passive == "only" or data.passive == "only-impers" then arabic_3sm_perf, latin_3sm_perf = get_spans(data.forms["3sm-ps-perf"]) else arabic_3sm_perf, latin_3sm_perf = get_spans(data.forms["3sm-perf"]) end

if doall then return table.concat(arabic_3sm_perf, ",") else return arabic_3sm_perf[1] end end

-- Implement. -- -- Generate the 3rd singular masculine past tense (the dictionary form), given -- the form, radicals and (for form I) past/non-past vowels (the non-past -- vowel is ignored, but specified for compatibility with export.headword -- and export.show). Form, radicals, past/non-past vowel arguments are the -- same as for export.show. Note that the form returned may be active or -- passive depending on the passive= param (some values specify that the -- verb is a passive-only verb). If there are multiple alternatives, -- return only the first one. function export.past3sm(frame) return past3sm(frame:getParent.args, false) end

-- Version of past3sm entry point meant for calling from the debug console. -- See export.show2. function export.past3sm2(parargs, args) return export.past3sm(debug_frame(parargs, args)) end

-- Implement. -- -- Same as export.past3sm but return all possible values, separated by -- a comma. Multiple values largely come from alternative hamza seats. function export.past3sm_all(frame) return past3sm(frame:getParent.args, true) end

-- Version of past3sm_all entry point meant for calling from the debug console. -- See export.show2. function export.past3sm_all2(parargs, args) return export.past3sm_all(debug_frame(parargs, args)) end

-- Implementation of export.verb_part and export.verb_part_all. local function verb_part(parargs, doall) local params = { [1] = {},	}	add_conjugation_args(params, 2)

local args = require("Module:parameters").process(parargs, params)

local part = args[1] local data, form, weakness, past_vowel, nonpast_vowel =	conjugate(args, 2) local arabic, latin = get_spans(data.forms[part])

if doall then return table.concat(arabic, ",") else return arabic[1] end end

-- Implement. -- -- TODO: Move this into Module:ar-headword -- Generate an arbitrary part of the verbal paradigm. If there are multiple -- possible alternatives, return only the first one. function export.verb_part(frame) return verb_part(frame:getParent.args, false) end

-- Version of verb_part entry point meant for calling from the debug console. -- See export.show2. function export.verb_part2(parargs, args) return export.verb_part(debug_frame(parargs, args)) end

-- Implement. -- -- TODO: Move this into Module:ar-headword -- Generate an arbitrary part of the verbal paradigm. If there are multiple -- possible alternatives, return all, separated by commas. function export.verb_part_all(frame) return verb_part(frame:getParent.args, true) end

-- Version of verb_part_all entry point meant for calling from the debug -- console. See export.show2. function export.verb_part_all2(parargs, args) return export.verb_part_all(debug_frame(parargs, args)) end

-- Return a property of the conjugation other than a verb part. local function verb_prop(parargs) local params = { [1] = {},	}	add_conjugation_args(params, 2)

local args = require("Module:parameters").process(parargs, params)

local prop = args[1] local data, form, weakness, past_vowel, nonpast_vowel = conjugate(args, 2) if prop == "form" then return form elseif prop == "weakness" then return weakness elseif prop == "form-weakness" then return form .. "-" .. weakness elseif prop == "past-vowel" then return table.concat(past_vowel, ",") elseif prop == "nonpast-vowel" then return table.concat(nonpast_vowel, ",") elseif prop == "rad1" then return data.rad1 or "" elseif prop == "rad2" then return data.rad2 or "" elseif prop == "rad3" then return data.rad3 or "" elseif prop == "rad4" then return data.rad4 or "" elseif prop == "unreg-rad1" then return data.unreg_rad1 or "" elseif prop == "unreg-rad2" then return data.unreg_rad2 or "" elseif prop == "unreg-rad3" then return data.unreg_rad3 or "" elseif prop == "unreg-rad4" then return data.unreg_rad4 or "" elseif prop == "radicals" then return table.concat({data.rad1, data.rad2, data.rad3, data.rad4}, ",") elseif prop == "unreg-radicals" then return table.concat({data.unreg_rad1, data.unreg_rad2,		data.unreg_rad3, data.unreg_rad4}, ",") elseif prop == "passive" then return data.passive == true and "yes" or not data.passive and "no" or data.passive elseif prop == "passive-uncertain" then return data.passive_uncertain and "yes" or "no" elseif prop == "vn-uncertain" then return data.vn_uncertain and "yes" or "no" elseif prop == "irregular" then return data.irregular and "yes" or "no" --elseif prop == "intrans" then --	return data.intrans else error("Unrecognized property '" .. prop .. "'") end end

-- Return a property of the conjugation other than a verb part. function export.verb_prop(frame) return verb_prop(frame:getParent.args) end

-- Version of verb_prop entry point meant for calling from the debug console. -- See export.show2. function export.verb_prop2(parargs, args) return export.verb_prop(debug_frame(parargs, args)) end

function export.verb_forms(frame) local parargs = frame:getParent.args local params = { [1] = {},		[2] = {},		[3] = {},		[4] = {},		[5] = {},	}	for _, form in ipairs(allowed_forms) do -- FIXME: We go up to 5 here. The code supports unlimited variants but it's unlikely we will ever see more than -- 2.		for index = 1, 5 do local prefix = index == 1 and form or form .. index params[prefix .. "-pv"] = {} for _, extn in ipairs { "", "-vn", "-ap", "-pp" } do params[prefix .. extn] = {} params[prefix .. extn .. "-head"] = {} -- FIXME: No -tr? params[prefix .. extn .. "-gloss"] = {} end end end

local args = require("Module:parameters").process(parargs, params)

local i = 1 local past_vowel_re = "^[aui,]*$" local combined_root = nil if not args[i] or rfind(args[i], past_vowel_re) then combined_root = mw.title.getCurrentTitle.text if not rfind(combined_root, " ") then error("When inferring roots from page title, need spaces in page title: " .. combined_root) end elseif rfind(args[i], " ") then combined_root = args[i] i = i + 1 else local separate_roots = {} while args[i] and not rfind(args[i], past_vowel_re) do			table.insert(separate_roots, args[i]) i = i + 1 end combined_root = table.concat(separate_roots, " ") end local past_vowel = args[i] i = i + 1 if past_vowel and not rfind(past_vowel, past_vowel_re) then error("Unrecognized past vowel, should be 'a', 'i', 'u', 'a,u', etc. or empty: " .. past_vowel) end if not past_vowel then past_vowel = "" end

local split_root = rsplit(combined_root, " ") -- Map from verb forms (I, II, etc.) to a table of verb properties, -- which has entries e.g. for "verb" (either true to autogenerate the verb	-- head, or an explicitly specified verb head using e.g. argument "I-head"), -- and for "verb-gloss" (which comes from e.g. the argument "I" or "I-gloss"), -- and for "vn" and "vn-gloss", "ap" and "ap-gloss", "pp" and "pp-gloss". local verb_properties = {} for _, form in ipairs(allowed_forms) do		local formpropslist = {} local derivs = {{"verb", ""}, {"vn", "-vn"}, {"ap", "-ap"}, {"pp", "-pp"}} local index = 1 while true do			local formprops = {} local prefix = index == 1 and form or form .. index if prefix == "I" then formprops["pv"] = past_vowel end if args[prefix .. "-pv"] then formprops["pv"] = args[prefix .. "-pv"] end for _, deriv in ipairs(derivs) do				local prop = deriv[1] local extn = deriv[2] if args[prefix .. extn] == "+" then formprops[prop] = true elseif args[prefix .. extn] == "-" then formprops[prop] = false elseif args[prefix .. extn] then formprops[prop] = true formprops[prop .. "-gloss"] = args[prefix .. extn] end if args[prefix .. extn .. "-head"] then if formprops[prop] == nil then formprops[prop] = true end formprops[prop] = args[prefix .. extn .. "-head"] end if args[prefix .. extn .. "-gloss"] then if formprops[prop] == nil then formprops[prop] = true end formprops[prop .. "-gloss"] = args[prefix .. extn .. "-gloss"] end end if formprops["verb"] then -- If a verb form specified, also turn on vn (unless form I, with				-- unpredictable vn) and ap, and maybe pp, according to form, -- weakness and past vowel. But don't turn these on if there's -- an explicit on/off specification for them (e.g. I-pp=-). if form ~= "I" and formprops["vn"] == nil then formprops["vn"] = true end if formprops["ap"] == nil then formprops["ap"] = true end local weakness = weakness_from_radicals(form, split_root[1],					split_root[2], split_root[3], split_root[4]) if formprops["pp"] == nil and not form_probably_no_passive(form,						weakness, rsplit(formprops["pv"] or "", ","), {}) then formprops["pp"] = true end table.insert(formpropslist, formprops) index = index + 1 else break end end table.insert(verb_properties, {form, formpropslist}) end

-- Go through and create the verb form derivations as necessary, when -- they haven't been explicitly given for _, vplist in ipairs(verb_properties) do		local form = vplist[1] for _, props in ipairs(vplist[2]) do			local args = {} function append_form_and_root table.insert(args, form) if form == "I" then table.insert(args, props["pv"]) -- past vowel table.insert(args, "") end m_table.extendList(args, split_root) end if props["verb"] == true then args = {} append_form_and_root props["verb"] = past3sm(args, true) end for _, deriv in ipairs({"vn", "ap", "pp"}) do				if props[deriv] == true then args = {deriv} append_form_and_root props[deriv] = verb_part(args, true) end end end end

-- Go through and output the result local formtextarr = {} for _, vplist in ipairs(verb_properties) do		local form = vplist[1] for _, props in ipairs(vplist[2]) do			local textarr = {} if props["verb"] then local text = "* Form " .. form .. ": " local linktext = {} local splitheads = rsplit(props["verb"], "[,،]") for _, head in ipairs(splitheads) do					table.insert(linktext, m_links.full_link({lang = lang, term = head, gloss = props["verb-gloss"]})) end text = text .. table.concat(linktext, ", ") table.insert(textarr, text) for _, derivengl in ipairs({{"vn", "Verbal noun"}, {"ap", "Active participle"}, {"pp", "Passive participle"}}) do					local deriv = derivengl[1] local engl = derivengl[2] if props[deriv] then local text = "** " .. engl .. ": "						local linktext = {} local splitheads = rsplit(props[deriv], "[,،]") for _, head in ipairs(splitheads) do table.insert(linktext, m_links.full_link({lang = lang, term = head, gloss = props[deriv .. "-gloss"]})) end text = text .. table.concat(linktext, ", ") table.insert(textarr, text) end end table.insert(formtextarr, table.concat(textarr, "\n")) end end end

return table.concat(formtextarr, "\n") end

-- Version of verb_forms entry point meant for calling from the debug console. -- See export.show2. function export.verb_forms2(parargs, args) return export.verb_forms(debug_frame(parargs, args)) end

-- Infer radicals from lemma headword (i.e. 3rd masculine singular past) and form (I, II, etc.). Throw an error if -- headword is malformed. Returned radicals may contain Latin letters "t", "w" or "y" indicating ambiguous radicals -- guessed to be tāʾ, wāw or yāʾ respectively. function export.infer_radicals(headword, form) local letters = {} -- sub out alif-madda for easier processing headword = rsub(headword, AMAD, HAMZA .. ALIF)

local len = ulen(headword)

-- extract the headword letters into an array for i = 1, len do		table.insert(letters, usub(headword, i, i)) end

-- check that the letter at the given index is the given string, or	-- is one of the members of the given array local function check(index, must) local letter = letters[index] if type(must) == "string" then if letter == nil then error("Letter " .. index .. " is nil", 2) end if letter ~= must then error("For form " .. form .. ", letter " .. index ..					" must be " .. must .. ", not " .. letter, 2) end elseif not m_table.contains(must, letter) then error("For form " .. form .. ", radical " .. index ..				" must be one of " .. table.concat(must, " ") .. ", not " .. letter, 2) end end

-- Check that length of headword is within [min, max] local function check_len(min, max) if len < min then error("Not enough letters in headword " .. headword ..				" for form " .. form .. ", expected at least " .. min) elseif len > max then error("Too many letters in headword " .. headword ..				" for form " .. form .. ", expected at most " .. max) end end

local quadlit = rmatch(form, "q$")

-- find first radical, start of second/third radicals, check for -- required letters local radstart, rad1, rad2, rad3, rad4 local weakness if form == "I" or form == "II" then rad1 = letters[1] radstart = 2 elseif form == "III" then rad1 = letters[1] check(2, {ALIF, W}) -- W occurs in passive-only verbs radstart = 3 elseif form == "IV" then -- this would be alif-madda but we replaced it with hamza-alif above. if letters[1] == HAMZA and letters[2] == ALIF then rad1 = HAMZA else check(1, HAMZA_ON_ALIF) rad1 = letters[2] end radstart = 3 elseif form == "V" then check(1, T)		rad1 = letters[2] radstart = 3 elseif form == "VI" then check(1, T)		if letters[2] == AMAD then rad1 = HAMZA radstart = 3 else rad1 = letters[2] check(3, {ALIF, W}) -- W occurs in passive-only verbs radstart = 4 end elseif form == "VII" then check(1, ALIF) check(2, N)		rad1 = letters[3] radstart = 4 elseif form == "VIII" then check(1, ALIF) rad1 = letters[2] if rad1 == T or rad1 == "د" or rad1 == "ث" or rad1 == "ذ" or rad1 == "ط" or rad1 == "ظ" then radstart = 3 elseif rad1 == "ز" then check(3, "د") radstart = 4 elseif rad1 == "ص" or rad1 == "ض" then check(3, "ط") radstart = 4 else check(3, T)			radstart = 4 end if rad1 == T then -- radical is ambiguous, might be ت or و or ي but doesn't affect -- conjugation rad1 = "t" end elseif form == "IX" then check(1, ALIF) rad1 = letters[2] radstart = 3 elseif form == "X" then check(1, ALIF) check(2, S)		check(3, T)		rad1 = letters[4] radstart = 5 elseif form == "Iq" then rad1 = letters[1] rad2 = letters[2] radstart = 3 elseif form == "IIq" then check(1, T)		rad1 = letters[2] rad2 = letters[3] radstart = 4 elseif form == "IIIq" then check(1, ALIF) rad1 = letters[2] rad2 = letters[3] check(4, N)		radstart = 5 elseif form == "IVq" then check(1, ALIF) rad1 = letters[2] rad2 = letters[3] radstart = 4 elseif form == "XI" then check_len(5, 5) check(1, ALIF) rad1 = letters[2] rad2 = letters[3] check(4, ALIF) rad3 = letters[5] weakness = "sound" elseif form == "XII" then check(1, ALIF) rad1 = letters[2] if letters[3] ~= letters[5] then error("For form XII, letters 3 and 5 of headword " .. headword ..				" should be the same") end check(4, W)		radstart = 5 elseif form == "XIII" then check_len(5, 5) check(1, ALIF) rad1 = letters[2] rad2 = letters[3] check(4, W)		rad3 = letters[5] if rad3 == AMAQ then weakness = "final-weak" else weakness = "sound" end elseif form == "XIV" then check_len(6, 6) check(1, ALIF) rad1 = letters[2] rad2 = letters[3] check(4, N)		rad3 = letters[5] if letters[6] == AMAQ then check_waw_ya(rad3) weakness = "final-weak" else if letters[5] ~= letters[6] then error("For form XIV, letters 5 and 6 of headword " .. headword ..					" should be the same") end weakness = "sound" end elseif form == "XV" then check_len(6, 6) check(1, ALIF) rad1 = letters[2] rad2 = letters[3] check(4, N)		rad3 = letters[5] if rad3 == Y then check(6, ALIF) else check(6, AMAQ) end weakness = "sound" else error("Don't recognize form " .. form) end

-- Process the last two radicals. RADSTART is the index of the -- first of the two. If it's nil then all radicals have already been -- processed above, and we don't do anything. if radstart ~= nil then -- there must be one or two letters left check_len(radstart, radstart + 1) if len == radstart then -- if one letter left, then it's a geminate verb if form_supports_geminate(form) then weakness = "geminate" rad2 = letters[len] rad3 = letters[len] else -- oops, geminate verbs not allowed in this form; signal -- an error check_len(radstart + 1, radstart + 1) end elseif quadlit then -- process last two radicals of a quadriliteral form rad3 = letters[radstart] rad4 = letters[radstart + 1] if rad4 == AMAQ or rad4 == ALIF and rad3 == Y or rad4 == Y then -- rad4 can be Y in passive-only verbs if form_supports_final_weak(form) then weakness = "final-weak" -- ambiguous radical; randomly pick wāw as radical (but avoid					-- two wāws in a row); it could be wāw or yāʾ, but doesn't					-- affect the conjugation rad4 = rad3 == W and "y" or "w" else error("For headword " .. headword ..						", last radical is " .. rad4 .. " but form " .. form ..						" doesn't support final-weak verbs") end else weakness = "sound" end else -- process last two radicals of a triliteral form rad2 = letters[radstart] rad3 = letters[radstart + 1] if form == "I" and (is_waw_ya(rad3) or rad3 == ALIF or rad3 == AMAQ) then -- check for final-weak form I verb. It can end in tall alif -- (rad3 = wāw) or alif maqṣūra (rad3 = yāʾ) or a wāw or yāʾ -- (with a past vowel of i or u, e.g. nasiya/yansā "forget"				-- or with a passive-only verb). if rad1 == W then weakness = "assimilated+final-weak" else weakness = "final-weak" end if rad3 == ALIF then rad3 = W				elseif rad3 == AMAQ then rad3 = Y				else -- ambiguous radical; randomly pick wāw as radical (but					-- avoid two wāws); it could be wāw or yāʾ, but doesn't					-- affect the conjugation rad3 = (rad1 == W or rad2 == W) and "y" or "w" -- ambiguous end elseif rad3 == AMAQ or rad2 == Y and rad3 == ALIF or rad3 == Y then -- rad3 == Y happens in passive-only verbs if form_supports_final_weak(form) then weakness = "final-weak" else error("For headword " .. headword ..						", last radical is " .. rad3 .. " but form " .. form ..						" doesn't support final-weak verbs") end -- ambiguous radical; randomly pick wāw as radical (but avoid				-- two wāws); it could be wāw or yāʾ, but doesn't affect the -- conjugation rad3 = (rad1 == W or rad2 == W) and "y" or "w" elseif rad2 == ALIF then if form_supports_hollow(form) then weakness = "hollow" -- ambiguous radical; could be wāw or yāʾ; if form I,					-- it's critical to get this right, and the caller checks -- for this situation, attempts to infer radical from -- non-past vowel, and if that fails, signals an error rad2 = "w" else error("For headword " .. headword ..						", second radical is alif but form " .. form ..						" doesn't support hollow verbs") end elseif form == "I" and rad1 == W then weakness = "assimilated" elseif rad2 == rad3 and (form == "III" or form == "VI") then weakness = "geminate" else weakness = "sound" end end end

-- convert radicals to canonical form (handle various hamza varieties and	-- check for misplaced alif or alif maqṣūra; legitimate cases of these	-- letters are handled above) local function convert(rad, index) if rad == HAMZA_ON_ALIF or rad == HAMZA_UNDER_ALIF or			rad == HAMZA_ON_W or rad == HAMZA_ON_Y then return HAMZA elseif rad == AMAQ then error("For form " .. form .. ", headword " .. headword ..				", radical " .. index .. " must not be alif maqṣūra") elseif rad == ALIF then error("For form " .. form .. ", headword " .. headword ..				", radical " .. index .. " must not be alif") else return rad end end rad1 = convert(rad1, 1) rad2 = convert(rad2, 2) rad3 = convert(rad3, 3) rad4 = convert(rad4, 4)

return weakness, rad1, rad2, rad3, rad4 end

-- Infer radicals from participle headword (active or passive), form (I, II, etc.) and whether the headword is active -- or passive. Throw an error if headword is malformed. Returned radicals may contain Latin letters "t", "w" or "y" -- indicating ambiguous radicals guessed to be tāʾ, wāw or yāʾ respectively. function export.infer_participle_radicals(headword, form, is_active) error("Not implemented yet") end

return export