local lang_data =  mw.loadData ('মডিউল:Lang/উপাত্ত');							-- language name override and transliteration tool-tip tables local lang_name_table = lang_data.lang_name_table;								-- language codes, names, regions, scripts, suppressed scripts  local lang_table = lang_name_table.lang;										-- language codes, names local lang_dep_table = lang_name_table.lang_dep;								-- deprecated language codes, names local override_table = lang_data.override;  local rev_lang_table = {};														-- same as lang_table reversed so language name is key and language tag is value local rev_lang_dep_table = {};													-- same as lang_dep_table reversed so language name is key and language tag is value local rev_override_table = {};													-- same as override_table except reversed local dedabbed_names_list = {};													-- holds a list of dedabbed name and tags  --[[--------------------------< R E V _ L I S T _ A D D >------------------------------------------------------  local function to add <name> (key) and <tag> (value) pair to <rev_list>  <name>/<tag> pairs where <tag> is ISO 639-1, overwrite all other <name>/<tag> pairs.  When creating overrides, take care that the <name> is properly disambiguated to avoid improper masking  ]]  local function rev_list_add (rev_list, name, tag) 	if rev_list[name] then														-- if already in <rev_list> 		if 2 == tag:len() then													-- is this is a 2-characater code? 			rev_list[name] = tag;												-- yes, overwrite 3-characater language <name> and <tag> pair in <rev_list> 		end 	else																		-- here when not yet in <rev_list> 		rev_list[name] = tag;													-- add language <name> and <tag> (value) pair to <rev_list> 	end end  --[[--------------------------< D E D A B B E D _ N A M E S _ L I S T _ A D D >--------------------------------  adds <name>/<tag> pairs to the dedabbed_names_list when <name> not already present.  When <name> is present in the list, unsets the listed <tag> to empty string; cannot have different <name>/<tag> pairs where the table key (<name>) is shared with another <name>/<tag> pair.  ]]  local function dedabbed_names_list_add (dab, name, tag) 	if 0 ~= dab then															-- if dab was removed 		if dedabbed_names_list[name] then										-- if this dedabbed name is in the table then there are more than one name with different dabs 			dedabbed_names_list[name] = ;										-- unset but not too unset 		else 			dedabbed_names_list[name] = tag;									-- add name / tag pair in case this the only dedabbed name 		end 	end end  --[[--------------------------< D E D A B B E D _ T O _ R E V _ L I S T _ A D D >------------------------------  adds <name>/<tag> pairs to specified <rev_list> when <tag> is not empty string  ]]  local function dedabbed_to_rev_list_add (rev_list, name, tag) 	for name, tag in pairs (dedabbed_names_list) do								-- add dedabbed <name>/<tag> pairs to the reversed table 		if  ~= tag then														-- when <name>/<tag> has not been unset because of multiple dabs 			rev_list_add (rev_list, name, tag);									-- add 		end 	end end  --[[--------------------------< T A G - F R O M - N A M E   D A T A >------------------------------------------  Creates tag-from-name tables from the data in Module:Lang/data so that templates can get language tags from the same names as the  templates get from those tags.  The conversion prefers ISO 639-1 codes.  Data in these tables are used by tag_from_name() in Module:Lang  When <name> is disambiguated, will create an additional <name> entry without the dab as long as that action won't conflict with actual undabbed names in the source.  <name> without dab is always added to the list; this rule arises because of the three Marwari language code/name pairs: 	mwr: Marwari																-– not dabbed these will not have dedabbed entries because of mwr 	rwr: Marwari (India) 	mve: Marwari (Pakistan)  These all share the same base name so there will not not be an dedabbed entry: 	["yaka"] = "axk",															-- this would be wrong for two of these languages 	["yaka (central african republic)"] = "axk", 	["yaka (congo)"] = "iyx", 	["yaka (democratic republic of congo)"] = "yaf",  Say that we find "axk".  It has a dab so we add the dabbed form to rev_lang_table{}.  Then we look in dedabbed_names_list{} to see if ["yaka"] is already there.  It's not, so we add this: 	["yaka"] = "axk", Later we find "yaf".  It has a dab so we add the dabbed form to rev_lang_table{}.  Then we look in dedabbed_names_list{} to see if ["yaka"] is already there.  It is, so that means that more than one language code could create an dedabbed language name key; there can be only one.  Because ["yaka"] is already in the dedabbed_names_list{} table we unset the ["yaka"] entry to empty string: 	["yaka"] = , later we find "iyx" and add it to rev_lang_table{}.  We look in dedabbed_names_list{} and find ["yaka"] has been unset to empty string so do nothing.  When done adding names/codes to rev_lang_table{}, spin through dedabbed_names_list{} and add all non-empty-string name/code pairs to rev_lang_table{}.  This does not catch things like overrides ["pa"] = "Punjabi" and ["pnb"] = "Punjabi".  "pa" and "pnb" are not synonyms but because the names are the same, will be treated like synonyms ("pnb" promotes to "pa"). To avoid this, disambiguate the override: ["pnb"] = {"Punjabi"} -> ["pnb"] = {"Punjabi (Western)"}  ]]  for tag, name_table in pairs (lang_table) do 	if not override_table[tag] then												-- only add names/tags from name_table when tag not present in override table 		local name_raw = name_table[1]:lower();									-- there can be multiple names, always take the first name; may have disambiguation 		local name, dab = name_raw:gsub ('%s+%b()', );						-- remove parenthetical disambiguators or qualifiers from names that have them; <dab> non-zero when disambiguation removed 	 		rev_list_add (rev_lang_table, name_raw, tag);							-- add no-dab-names and names-with-dab here 		dedabbed_names_list_add (dab, name, tag);								-- add to dedabbed_names_list if dabbed 	end end  dedabbed_to_rev_list_add (rev_lang_table, name, tag);							-- add dedabbed name/tag pairs to the reversed table  dedabbed_names_list = {};														-- reset list of dedabbed names  for tag, name_table in pairs (lang_dep_table) do 	if not override_table[tag] then												-- only add names/tags from name_table when tag not present in override table 		local name_raw = name_table[1]:lower();									-- there can be multiple names, always take the first name; may have disambiguation 		local name, dab = name_raw:gsub ('%s+%b()', );						-- remove parenthetical disambiguators or qualifiers from names that have them; <dab> non-zero when disambiguation removed 	 		rev_list_add (rev_lang_dep_table, name_raw, tag);						-- add no-dab-names and names-with-dab here 		dedabbed_names_list_add (dab, name, tag);								-- add to dedabbed_names_list if dabbed 	end end  dedabbed_to_rev_list_add (rev_lang_dep_table, name, tag);						-- add dedabbed name/tag pairs to the reversed table  dedabbed_names_list = {};														-- reset list of dedabbed names  for tag, name_table in pairs (override_table) do 	local name_raw = name_table[1]:lower();										-- there can be multiple names, always take the first name 	local name, dab = name_raw:gsub ('%s+%b()', );							-- remove parenthetical disambiguators or qualifiers from names that have them  	rev_list_add (rev_override_table, name_raw, tag); 	dedabbed_names_list_add (dab, name, tag);									-- add to dedabbed_names_list if dabbed end  dedabbed_to_rev_list_add (rev_override_table, name, tag);						-- add dedabbed name/tag pairs to the reversed table  dedabbed_names_list = {};														-- reset list  --[[--------------------------< E X P O R T E D   T A B L E S >------------------------------------------------ ]]  return { 	rev_lang_table = rev_lang_table, 	rev_lang_dep_table = rev_lang_dep_table, 	rev_override_table = rev_override_table, 	}