Module:Is infobox in lead

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Module:Is infobox in lead checks if a given infobox is in the lead, is also the only infobox in the lead, and that there aren't two of that same infobox in the article. If that is the case, it returns true, and if not returns nothing.

Usage

{{#invoke:Is infobox in lead|main|[Ii]nfobox [Ff]oo [Bb]ar}}

It does not detect redirects which do not match the parameter. Redirects can be handled with an extra invocation per redirect pattern, e.g.:

{{#invoke:Is infobox in lead|main|[Ii]nfobox [Ss]ong}}{{#invoke:Is infobox in lead|main|[Ii]nfobox [Ss]ingle}}

Redirects can be found with WhatLinksHere.

The above documentation is transcluded from Module:Is infobox in lead/doc. (edit | history)
Editors can experiment in this module's sandbox (create | mirror) and testcases (create) pages.
Subpages of this module.

local p = {}

function p.main (frame)
	return p._main (frame.args[1])
end

function p._main (searchString)
	local content = mw.title.getCurrentTitle():getContent()
	local offset = string.find(content, "==", 1 , true)
	if offset then
		local lead = string.sub(content, 1, offset-1)
		if (string.find(lead, searchString)) then
			lead = lead
				:gsub( "{{%s-[Ii]nfobox%s-mapframe", "") --don't check for infobox mapframe
				:gsub( "{{%s-[Ii]nfobo[^}]-%|%s-embed%s-=%s-yes", "") --don't check for embeded infoboxes
				:gsub( "{{%s-[Ii]nfobo[^}]-%|%s-child%s-=%s-yes", "") --don't check for child infoboxes
			local iter = string.gmatch(lead, "{{%s-[Ii]nfobox")
			iter()
			if not iter() then --if able to find two infoboxes in the lead, then don't return true
				local iter2 = string.gmatch(content, searchString)
				iter2()
				if not iter2() then --if able to find two of the specific infobox in the article, then don't return true
					return true
				end
			end
		end
	end
end

return p