require('Module:No globals');  local getArgs = require ('Module:Arguments').getArgs; local lang_module = require ('Module:Lang');  local defined_values = { 	italic = {['no']='no', ['off']='no'},										-- values accepted by |italic= and |italics=;  expects 'no' so 'off' must be translated 	nbsp = {['no']=true, ['omit']=true},										-- values accepted by |nbsp= 	paren = {['no']=true, ['off']=true, ['omit']=true},							-- values accepted by |paren= 	}  local messages_t = {													 	tag_required = 'an IETF language tag as parameter  is required',		-- for  	name_required = 'a name as parameter  is required', 																 	tag_required_idx = 'an IETF language tag in |tag%s= is required',			-- for  when called from  	name_required_idx = 'a name in |name%s= is required',  	empty_list = 'list is empty',												-- for  	positional = 'positional parameters not supported',  	br_list = '<br /> lists not allowed',									-- for  	list_markup = 'list markup expected for multiple names', 	malformed_param = 'parameter value is malformed', 	}  local help_links_t = { 	['native name'] = 'help', 	['native name checker'] = 'help', 	['native name list'] = 'help', 	}  local error_cats_t = { 	['native name'] = 'Category:Native name template errors', 	['native name checker'] = 'Category:Native name checker template errors', 	['native name list'] = 'Category:Native name list template errors', 	}  --[[--------------------------< E R R O R _ M S G >------------------------------------------------------------  returns a formatted error message  ]]  local function error_msg (msg, template, index) 	local cat = ((0 == mw.title.getCurrentTitle().namespace) and error_cats_t[template]) or ''; 	if index then 		local message = string.format (msg, index); 		return string.format ('Error : %s (%s)%s', template, message, help_links_t[template], cat) 	end 	return string.format ('Error : %s (%s)%s', template, msg, help_links_t[template], cat) end  --[=[-------------------------< _ N A T I V E _ N A M E >------------------------------------------------------  implements ; entry point from a module  <args_t> is a table of parameter name/value pairs.  Parameters that are supported are: 	args_t[1] - IETF language tag (required) 	args_t[2] - the native name (required) 	args_t.italic - accepts string values 'no' or 'off';  expects 'no' so 'off' must be translated 	args_t.italics - alias of |italic= 	args_t.paren - accepts 'omit', 'off', or 'no' 	args_t.icon - alias of paren 	args_t.nbsp - accepts 'omit' or 'no' 	args_t.parensize -  	args_t.fontsize - deprecated alias of |parensize= 	args_t.nolink - any value inhibits wikilinking of language name  this function calls these functions in Module:lang: 	_is_ietf_tag 	_lang 	_name_from_tag  TODO: 	add support for romanization and transliteration? 	add support for postfix so that 'mis' can render something like this: 		 			Chotilapacquen (Coahuiltecan)  ]=]  local function _native_name (args_t) 	local template = (args_t.template and args_t.template) or 'native name';	-- for error messaging; use 'native name list' when called from native_name_list(), etc  	if not args_t[1] then 		return error_msg ((args_t.index and messages_t.tag_required_idx) or messages_t.tag_required, template, args_t.index) 	end 	if not args_t[2] then 		return error_msg ((args_t.index and messages_t.name_required_idx) or messages_t.name_required, template, args_t.index) 	end  	args_t.italic = args_t.italics or args_t.italic;							-- plural form first in  but singular form for  	args_t.italic = defined_values.italic[args_t.italic] or nil;				-- translate assigned value 	args_t.italics = nil;														-- so unset as unneeded  	args_t.paren = args_t.paren or args_t.icon; 	args_t.icon = nil;															-- unset as unneeded  	args_t.parensize = args_t.parensize or args_t.fontsize or '100%'; 	args_t.fontsize = nil;														-- unset as unneeded  	local out_t = {};  	table.insert (out_t, lang_module._lang ({args_t[1], args_t[2], ['italic']=args_t.italic, ['template']=template})); 	if not defined_values.paren[args_t.paren] then 		table.insert (out_t, ' '); 		if not defined_values.italic[args_t.italic] and not defined_values.nbsp[args_t.nbsp] then 			table.insert (out_t, ' '); 		end  		table.insert (out_t, table.concat ({ 			''}));  		if args_t.nolink then 			table.insert (out_t, table.concat ({'(', lang_module._name_from_tag ({args_t[1], ['template']=template}), ')'})); 		else 			if lang_module._is_ietf_tag (args_t[1]) then 				table.insert (out_t,  table.concat ({'(', lang_module._name_from_tag ({args_t[1], ['link'] ='yes', ['template']=template}), ')'})); 			else 				table.insert (out_t, '(language?)');							-- TODO: any reason to keep this? 			end 		end  		table.insert (out_t, ''); 	end  	return table.concat (out_t); end  --[[--------------------------< N A T I V E _ N A M E >--------------------------------------------------------  implements ; entry point from the template  ]]  local function native_name (frame) 	return _native_name (getArgs (frame)); end  --[[--------------------------> _ N A T I V E _ N A M E _ L I S T >--------------------------------------------  implements ; entry point from a module  <args_t> is a table of parameter name/value pairs.  Supports enumerated forms of the  parameters: 	args_t.tagn - IETF language tag (|tag1= required) 	args_t.namen - the native name (|name1= required) 	args_t.italicn - accepts string values 'no' or 'off' 	args_t.italicsn - alias of |italicn= 	args_t.parenn - accepts 'omit', 'off', or 'no' 	args_t.iconn - alias of paren 	args_t.nbspn - accepts 'omit' or 'no' 	args_t.parensizen -  	args_t.fontsizen - deprecated alias of |parensizen= 	args_t.nolinkn - any value inhibits wikilinking of language name  also supports: 	args_t.postfixn - wikitext to be appended to list item n (references other appropriate text)  ]]  local function _native_name_list (args_t) 	if args_t[1] then 		return error_msg (messages_t.positional, 'native name list') 	end  	local max_enum = 0;															-- accumulate the value to the enumerator with the greatest value  	for param, _ in pairs (args_t) do											-- loop through all parameters 		local n = tonumber (param:match ('%d+$'));								-- extract the required enumerator 		max_enum = ((n and (n > max_enum)) and n) or max_enum;					-- bump <max_enum> if <n> is greater 	end  	local list_t = {};															-- list of formatted native names goes here 	local n = 1;																-- initialize an enumerator  	while n <= max_enum do 		table.insert (list_t, table.concat ({ 			'',																-- open the list item 			_native_name ({														-- go render the native name 				args_t['tag'..n], 				args_t['name'..n], 				['italic'] = args_t['italic'..n], 				['italics'] = args_t['italics'..n], 				['paren'] = args_t['paren'..n], 				['icon'] = args_t['icon'..n], 				['nbsp'] = args_t['nbsp'..n], 				['parensize'] = args_t['parensize'..n], 				['fontsize'] = args_t['fontsize'..n], 				['nolink'] = args_t['nolink'..n], 				['template'] = 'native name list',								-- for error messaging 				['index'] = n,													-- for error messaging 				}), 			args_t['postfix'..n] or '', 			''																-- close the list item 		})); 		n = n + 1;																-- bump the enumerator 	end  	if 0 < #list_t then 		if 1 < #list_t then 			table.insert (list_t, 1, '');			-- open the div; open the unordered list 			table.insert (list_t, '');								-- close the unordered list; close the div 		else																	-- here when only one list item; no need for list markup; TODO: error message for this case? 			local out = table.concat (list_t):gsub ('', ):gsub ('</li>', ); 			return out;															-- to avoid replacement count contaminating the output 		end 	else 		return error_msg (messages_t.empty_list, 'native name list'); 	end 	 	return table.concat (list_t);												-- make a big string and done end  --[[--------------------------< N A T I V E _ N A M E _ L I S T >----------------------------------------------  implements ; entry point from the template  ]]  local function native_name_list (frame) 	return _native_name_list (getArgs (frame)); end  --[[--------------------------< _ N A T I V E _ N A M E _ C H E C K E R >--------------------------------------  entry point from a module  implements   for use inside infoboxen: 	|dataxx =   inspects rendered content of : 	expects: at least one lang="<valid IETF tag>" html attribute; tag must begin with 2 or three letters followed 			by a hyphen or double quote character: lang="zh-Hant" or lang="nav" or lang="oj" 	emits error message when 2 or more lang="<valid IETF tag>" html attribute but list markup  tag not found 	emits error message if any form of '' tag is found per MOS:NOBREAK  returns: 	nothing when |native_name= is omitted or empty 	assigned value when no error 	error message on error  ]]  local function _native_name_checker (args_t) 	local value = args_t[1]; 	 	if not value then															-- if |native_name= is omitted or empty 		return;																	-- return nothing 	end 	 	local _, count = value:gsub ('lang="%a%a%a?[%-"]%a*', '%1'); 	if 0 == count then 		return table.concat ({value, error_msg (messages_t.malformed_param, 'native name checker')}, ' ');	-- no  or  template 	end 	if 1 < count then 		if not value:find ('') or not value:find ('$') then	-- must be wrapped in 'plainlist' div 			return table.concat ({value, error_msg (messages_t.list_markup, 'native name checker')}, ' '); 		end 	end 	 	if value:find ('< */? *[Bb][Rr] */? *>') then								-- look for something that vaguely resembles a  tag 		return table.concat ({value, error_msg (messages_t.br_list, 'native name checker')}, ' '); 	end  	return value;																-- no failed tests, return the value as is end  --[[--------------------------< N A T I V E _ N A M E _ C H E C K E R >--------------------------------------  entry point from a module  implements   ]]  local function native_name_checker (frame) 	return _native_name_checker (getArgs (frame)); end  --[[--------------------------< E X P O R T S >---------------------------------------------------------------- ]]  return { 	native_name = native_name,													-- template interface 	native_name_list = native_name_list, 	native_name_checker = native_name_checker, 	 	_native_name = _native_name,												-- other module interface 	_native_name_list = _native_name_list, 	_native_name_checker = _native_name_checker, 	}