Module:Sandbox/Wnt/WikiLink explained

local p =

function proc(text,fcn,args) -- processes text sequentially according to a list of functions separated by spaces fcn text=text or "" fcn=fcn or "" local keepfile repeat fcnext=mw.ustring.match(fcn,"(%S+)") if fcnext then fcn=mw.ustring.gsub(fcn,fcnext,"") -- function names SHALL not contain pattern chars if fcnext

"dewiki" then -- protect all single [and ] by temporarily converting to a password. This allows links to remain inside file text while doing only a dewiki text=mw.ustring.gsub(text,"([^%[])%[([^%[])","%1%2") text=mw.ustring.gsub(text,"^%[([^%[])","%1") text=mw.ustring.gsub(text,"([^%[])%[$","%1<Module:WikiLink internal lsbracket token>") text=mw.ustring.gsub(text,"([^%]])%]([^%]])","%1%2") text=mw.ustring.gsub(text,"^%]([^%]])","%1") text=mw.ustring.gsub(text,"([^%]])%]$","%1") if keepfile then text=mw.ustring.gsub(text,"%[%[%s*File:([^%[%]])%]%]","%1") text=mw.ustring.gsub(text,"%[%[%s*Image:([^%[%]])%]%]","%1") end

-- process File: and Image: links, using alt text when available text=mw.ustring.gsub(text,"%[%[File:[^%[%]]-|%s*alt=([^%[%]|]-)|[^%[%]]-%]%]","%1") -- case for File: where alt= text is present but not at end text=mw.ustring.gsub(text,"%[%[Image:[^%[%]]-|%s*alt=([^%[%]|]-)|[^%[%]]-%]%]","%1") -- case for Image: where alt= text is present but not at end text=mw.ustring.gsub(text,"%[%[File:[^%[%]]-|%s*alt=([^%[%]|]-)%]%]","%1") -- case for File: where alt= text is present at end text=mw.ustring.gsub(text,"%[%[Image:[^%[%]]-|%s*alt=([^%[%]|]-)%]%]","%1") -- case for Image: where alt= text is present at end text=mw.ustring.gsub(text,"%[%[[^%[%]]-|([^%[%]|]-)%]%]","%1") -- link, text separated by "|". Handles case of File: when no alt= is specified, -assuming- last field is the legend text=mw.ustring.gsub(text,"%[%[([^%[%]|]-)%]%]","%1") -- link with no funny |s at all -- deprotect all tokens text=mw.ustring.gsub(text,"","[") text=mw.ustring.gsub(text,"<Module:WikiLink internal rsbracket token>","]") text=mw.ustring.gsub(text,"","