--                           Module:Hatnote list                              -- --                                                                            -- -- This module produces and formats lists for use in hatnotes. In particular, -- -- it implements the for-see list, i.e. lists of "For X, see Y" statements,   -- -- as used in , , and their variants. Also introduced    -- -- are andList & orList helpers for formatting lists with those conjunctions. --  local mArguments --initialize lazily local mHatnote = require('Module:Hatnote') local libraryUtil = require('libraryUtil') local checkType = libraryUtil.checkType local p = {}  -- List stringification helper functions -- -- These functions are used for stringifying lists, usually page lists inside -- the "Y" portion of "For X, see Y" for-see items.  --default options table used across the list stringification functions local stringifyListDefaultOptions = { 	conjunction = "ও", 	separator = ",", 	altSeparator = ";", 	space = " ", 	formatted = false }  -- Stringifies a list generically; probably shouldn't be used directly function stringifyList(list, options) 	-- Type-checks, defaults, and a shortcut 	checkType("stringifyList", 1, list, "table") 	if #list == 0 then return nil end 	checkType("stringifyList", 2, options, "table", true) 	options = options or {} 	for k, v in pairs(stringifyListDefaultOptions) do 		if options[k] == nil then options[k] = v end 	end 	local s = options.space 	-- Format the list if requested 	if options.formatted then list = mHatnote.formatPages(unpack(list)) end 	-- Set the separator; if any item contains it, use the alternate separator 	local separator = options.separator 	--searches display text only 	local function searchDisp(t, f) 		return string.find(string.sub(t, (string.find(t, '|') or 0) + 1), f) 	end 	for k, v in pairs(list) do 		if searchDisp(v, separator) then 			separator = options.altSeparator 			break 		end 	end 	-- Set the conjunction, apply Oxford comma, and force a comma if #1 has "§" 	local conjunction = s .. options.conjunction .. s 	if #list == 2 and searchDisp(list[1], "§") then 		conjunction = separator .. conjunction 	end 	-- Return the formatted string 	return mw.text.listToText(list, separator .. s, conjunction) end  --DRY function function conjList (conj, list, fmt) 	return stringifyList(list, {conjunction = conj, formatted = fmt}) end  -- Stringifies lists with "and" or "or" function p.andList (...) return conjList("ও", ...) end function p.orList (...) return conjList("বা", ...) end  -- For see -- -- Makes a "For X, see Y." list from raw parameters. Intended for the --  and  templates and their variants.  --default options table used across the forSee family of functions local forSeeDefaultOptions = { 	andKeyword = 'ও', 	title = mw.title.getCurrentTitle().text, 	otherText = 'অন্য ব্যবহারের', 	forSeeForm = '%s জন্য %s দেখুন।', }  --Collapses duplicate punctuation function punctuationCollapse (text) 	local replacements = { 		["%.%.$"] = ".", 		["%?%.$"] = "?", 		["%!%.$"] = "!", 		["%.%]%]%.$"] = ".]]", 		["%?%]%]%.$"] = "?]]", 		["%!%]%]%.$"] = "!]]" 	} 	for k, v in pairs(replacements) do text = string.gsub(text, k, v) end 	return text end  -- Structures arguments into a table for stringification, & options function p.forSeeArgsToTable (args, from, options) 	-- Type-checks and defaults 	checkType("forSeeArgsToTable", 1, args, 'table') 	checkType("forSeeArgsToTable", 2, from, 'number', true) 	from = from or 1 	checkType("forSeeArgsToTable", 3, options, 'table', true) 	options = options or {} 	for k, v in pairs(forSeeDefaultOptions) do 		if options[k] == nil then options[k] = v end 	end 	-- maxArg's gotten manually because getArgs() and table.maxn aren't friends 	local maxArg = 0 	for k, v in pairs(args) do 		if type(k) == 'number' and k > maxArg then maxArg = k end 	end 	-- Structure the data out from the parameter list: 	-- * forTable is the wrapper table, with forRow rows 	-- * Rows are tables of a "use" string & a "pages" table of pagename strings 	-- * Blanks are left empty for defaulting elsewhere, but can terminate list 	local forTable = {} 	local i = from 	local terminated = false 	-- If there is extra text, and no arguments are given, give nil value 	-- to not produce default of "For other uses, see foo (disambiguation)" 	if options.extratext and i > maxArg then return nil end 	-- Loop to generate rows 	repeat 		-- New empty row 		local forRow = {} 		-- On blank use, assume list's ended & break at end of this loop 		forRow.use = args[i] 		if not args[i] then terminated = true end 		-- New empty list of pages 		forRow.pages = {} 		-- Insert first pages item if present 		table.insert(forRow.pages, args[i + 1]) 		-- If the param after next is "and", do inner loop to collect params 		-- until the "and"'s stop. Blanks are ignored: "1|and||and|3" → {1, 3} 		while args[i + 2] == options.andKeyword do 			if args[i + 3] then  				table.insert(forRow.pages, args[i + 3]) 			end 			-- Increment to next "and" 			i = i + 2 		end 		-- Increment to next use 		i = i + 2 		-- Append the row 		table.insert(forTable, forRow) 	until terminated or i > maxArg 	 	return forTable end  -- Stringifies a table as formatted by forSeeArgsToTable function p.forSeeTableToString (forSeeTable, options) 	-- Type-checks and defaults 	checkType("forSeeTableToString", 1, forSeeTable, "table", true) 	checkType("forSeeTableToString", 2, options, "table", true) 	options = options or {} 	for k, v in pairs(forSeeDefaultOptions) do 		if options[k] == nil then options[k] = v end 	end 	-- Stringify each for-see item into a list 	local strList = {} 	if forSeeTable then 		for k, v in pairs(forSeeTable) do 			local useStr = v.use or options.otherText 			local pagesStr = p.andList(v.pages, true) or mHatnote._formatLink{link = mHatnote.disambiguate(options.title)} 			local forSeeStr = string.format(options.forSeeForm, useStr, pagesStr) 			forSeeStr = punctuationCollapse(forSeeStr) 			table.insert(strList, forSeeStr) 		end 	end 	if options.extratext then table.insert(strList, punctuationCollapse(options.extratext..'.')) end 	-- Return the concatenated list 	return table.concat(strList, ' ') end  -- Produces a "For X, see Y" string from arguments. Expects index gaps -- but not blank/whitespace values. Ignores named args and args < "from". function p._forSee (args, from, options) 	local forSeeTable = p.forSeeArgsToTable(args, from, options) 	return p.forSeeTableToString(forSeeTable, options) end  -- As _forSee, but uses the frame. function p.forSee (frame, from, options) 	mArguments = require('Module:Arguments') 	return p._forSee(mArguments.getArgs(frame), from, options) end  return p