Module:niv-sortkey

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---

local export = {}
local u = mw.ustring.char
local a, b, c = u(0xF000), u(0xF001), u(0xF002)

local oneChar = {
	["ӷ"] = "г" .. a, ["ғ"] = "г" .. b, ["ӻ"] = "г" .. c, ["ё"] = "е" .. a, ["ӄ"] = "к" .. b, ["ӈ"] = "н" .. a, ["ў"] = "у" .. a, ["ӽ"] = "х" .. a, ["ӿ"] = "х" .. b
}

local twoChars = {
	["кʼ"] = "к" .. a, ["ӄʼ"] = "к" .. c, ["пʼ"] = "п" .. a, ["р̌"] = "р" .. a, ["тʼ"] = "т" .. a
}

function export.makeSortKey(text, lang, sc)
	text = mw.ustring.lower(text)
	
	for from, to in pairs(twoChars) do
		text = mw.ustring.gsub(text, from, to)
	end
	
	return mw.ustring.upper(mw.ustring.gsub(text, ".", oneChar))
end

return export