Module:Language/name/data

-- put tables and their tables together local function __coalesce(...) local coalesced = {} for _, langslist in ipairs(arg) do       for langcode, langnames in pairs(langslist) do            for _, langname in pairs(langnames) do                if not coalesced[langcode] then coalesced[langcode] = {} end table.insert(coalesced[langcode], langname) end end end return coalesced end

-- make the keys lowercase local function __preprocess(t, first_of_array_in_array) local preprocessed = {} if first_of_array_in_array then -- keep only the 1st language name for each code, excluding synonyms for k, v in pairs(t) do           preprocessed[k:lower] = {v[1]} end else for k, v in pairs(t) do           preprocessed[k:lower] = v        end end

return preprocessed end

-- all valid primary language subtags for BCP47 from IANA (most of them from ISO 639-1, -2 and -3 with some exclusions) local __iana_languages = __preprocess(require("Module:Language/data/iana languages")) -- ISO 639-3 contains additional 3-letter codes not inserted in the IANA database as they are aliased to 2-letter codes, -- but excludes some deleted codes still valid in BCP47 (some of them are aliased) local __iso_639_3     = __preprocess(require("Module:Language/data/iso 639-3")) -- Wikimedia wikis uses some non-standard codes and a subset of IANA codes, plus composite codes local __wp_languages  = __preprocess(require("Module:Language/data/wp languages"), true) -- all valid script subtags for BCP47 from IANA (excluding special ISO 15924 codes) local iana_scripts    = __preprocess(require("Module:Language/data/iana scripts")) -- all valid region subtags for BCP47 from IANA (derived from ISO 3166-1 excluding special codes, and from 3-digit UN M.49 codes for groups of countries) local iana_regions    = __preprocess(require("Module:Language/data/iana regions")) return { lang  = __coalesce(__wp_languages, __iana_languages, __iso_639_3), lang_iana = __iana_languages, script = iana_scripts, region = iana_regions }