Module:Multi-section link

-- This module creates a section link with multiple section names.

local p = {}

function p._main(args)
	local displayParts = {}
	for i, v in ipairs(args) do
		displayParts[i] = v
	end
	local nParts = #displayParts
	if nParts < 1 then
		error('no page name found in parameter |1=', 2)
	elseif nParts == 1 then
		return string.format('[[%s]]', displayParts[1])
	else
		local display
		do
			display = {}
			for i, s in ipairs(displayParts) do
				table.insert(display, s)
				table.insert(display, string.rep('§', i))
			end
			table.remove(display) -- Remove the extra "§§" markers from the end
			display = table.concat(display, ' ')
		end
		local page = displayParts[1]
		local fragment = displayParts[nParts]
		return string.format('[[%s#%s|%s]]', page, fragment, display)
	end
end

function p.main(frame)
	local args = require('Module:Arguments').getArgs(frame, {
		wrappers = 'Template:Multi-section link'
	})
	return p._main(args)
end

return p