Module:Tmpl

-- This is a helper module for require('strict')

-- The trailing `[^0-9]?` ensures that `$10` doesn't potentially change -- from being treated as `${1}0` to being treated as `${10}` -- if the number of supported parameters is ever expanded: local PATTERN = "%$([1-9])[^0-9]?"

local this = {}

function this.renderTmpl(frame) local args = frame.args local pargs = (frame:getParent or {}).args local input = pargs[0] or '' local result = {}

local prevPos = 1 do local startPos, _, k		while true do			startPos, _, k = string.find(input, PATTERN, prevPos) if (not startPos) then break end table.insert(result, string.sub(input, prevPos, startPos - 1))

local n = tonumber(k) local r = pargs[n] if (r) then table.insert(result, r)			else table.insert(result, '$' .. n)			end

prevPos = startPos + #k + 1 end end

table.insert(result, string.sub(input, prevPos)) return table.concat(result) end

return this