Module:Lorem ipsum

local yn = require("Module:Yesno")
return {
	main = function(frame)
		local args = require("Module:Arguments").getArgs(frame)
		local data = args["data"] and mw.loadData(args["data"]) or mw.loadData("Module:Lorem_ipsum/data")
		local paragraphs = {}
		for k,v in ipairs(data) do
			table.insert(paragraphs, v)
		end
		local out = ''
		local outTbl = {}
		local link = yn(args["link"]) or yn(args[4]) or false
		local join = yn(args["join"]) or false
		local joinprefixsuffix = yn(args["joinprefixsuffix"]) or false
		local cat = yn(args["cat"]) or true
		local count = tonumber(args[1] or 1)
		local i = 1
		if join and (not joinprefixsuffix) then
			table.insert(outTbl, (args["prefix"] or args[2] or ""))
		end
		while i <= count do
			if (not join) or joinprefixsuffix then
				table.insert(outTbl, (args["prefix"] or args[2] or "\n"))
			end
			table.insert(outTbl, mw.ustring.format(paragraphs[math.mod(i - 1, #paragraphs) + 1], (link and "link" or "")))
			if not join then
				table.insert(outTbl, (args["suffix"] or args[3] or "") .. "\n")
			else
				if joinprefixsuffix then
					table.insert(outTbl, (args["suffix"] or args[3] or ""))
				end
				table.insert(outTbl, (i == count and "" or " "))
			end
			link = false
			i = i + 1
		end
		if join and (not joinprefixsuffix) then
			table.insert(outTbl, (args["suffix"] or args[3] or ""))
		end
		if cat and mw.title.getCurrentTitle().namespace == 0 and not mw.isSubsting() then
			table.insert(outTbl, "[[Category:Wikipedia articles containing placeholders]]")
		end
		return frame:preprocess(table.concat(outTbl, ''))
	end,
	oneParagraph = function(frame)
		local args = require("Module:Arguments").getArgs(frame)
		local data = args["data"] and mw.loadData(args["data"]) or mw.loadData("Module:Lorem_ipsum/data")
		local paragraphs = {}
		for k,v in ipairs(data) do
			table.insert(paragraphs, v)
		end
		local i = tonumber(args[1] or 1)
		local link = yn(args["link"])
		local paragraph = paragraphs[math.mod(i - 1, #paragraphs) + 1]
		local out = ""
		if cat and mw.title.getCurrentTitle().namespace == 0 and not mw.isSubsting() then
			out = out .. "[[Category:Wikipedia articles containing placeholders]]"
		end
		out = out .. mw.ustring.format(paragraph, (link and "link" or ""))
		out = frame:preprocess(out)
		local maxLen = tonumber(args["max len"] or mw.ustring.len(out))
		return mw.ustring.sub(out, 1, maxLen)
	end
}