Module:Redirect
Documentation for this module may be created at Module:Redirect/doc
---- 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 {{#invoke:redirect|main|redirect-page-name}}. The template neither takes nor gives square brackets, so to show the result as a link use [[{{#invoke:redirect|main|redirect-page-name}}]]. 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) args=frame.args parent=frame.getParent(frame) if parent then pargs = parent.args else pargs={} end local rname=args[1] or pargs[1] or "" local bracket=args.bracket or pargs.bracket local bb = "";local be= "" -- store brackets if restoring to an output if bracket option is set if rname then if mw.ustring.gsub(rname,"%s","") == "" then return "" end if bracket then local strip=mw.ustring.gmatch(rname,"%[%[(.+)%]%]") if strip then rname=strip;bb="[[";be="]]" end end else return "" end local rpage=mw.title.new(rname) local err="" if rpage then -- avoid possibly expensive FileExists if we don't have anything if rpage.id ~= 0 then -- if rpage.fileExists then if rpage.isRedirect then return (bb.. tostring(mw.ustring.match(tostring(rpage.getContent(rpage)),"REDIRECT.-%[%[(.-)%]%]")) or [=[<span style="text-color:red;">[[Module:redirect]] error: failed to understand - [[]=] .. rname .. [=[]]</span]=] .. be) else return rname -- not a redirect so leave the original text (for some general-purpose template use) end -- else err="File does not exist: " -- end else err="File not found (id=0): " end else err="File not found (mw.title.new failed)" end return [=[<span style="text-color:red;">[[Module:redirect]] error: ]=] .. err .. [=[ - [[]=] .. rname .. [=[]]</span>]=] end return p