Module:Redirect

This module accepts the name of a single page. It determines if the page is a redirect; if so it looks up the page, extracts the target, and returns the target name as text. Its usage is. The template neither takes nor gives square brackets, so to show the result as a link use . An error is produced if the redirect does not exist, but for versatility no error is given if the file is not a redirect (returns the original text) or if the file name is blank (returns blank).

p={}

function p.main(frame) local args, pargs = frame.args, (frame:getParent or {}).args or {} local rname, bracket = args[1] or pargs[1], args.bracket or pargs.bracket if not rname or not mw.ustring.match(rname, "%S") then return "" end bracket = bracket and "%s" or "%s" rname = mw.ustring.match(rname,"%[%[(.+)%]%]") or rname local rpage, err = mw.title.new(rname) -- avoid expensive operation when nothing to do   if not rpage then err = "File not found (mw.title.new failed)" elseif rpage.id == 0 then err = "File not found (id=0):" elseif not rpage.isRedirect then return mw.ustring.format(bracket, rname) -- not a redirect so use passed page name (for some general-purpose template use) else local redirect = mw.ustring.match( rpage:getContent or "", "^#[Rr][Ee][Dd][Ii][Rr][Ee][Cc][Tt]%s*%[%[(.-)%]%]" ) if redirect then return mw.ustring.format(bracket, redirect) end err = "failed to understand" end return ' Module:redirect error: ' .. err .. ' - ' .. rname .. ' ' end

return p