Function _normalize

external/.datatables.js:1238–1250

(str, both)

	// Remove diacritics from a string by decomposing it and then removing
	// non-ascii characters
	var _normalize = function (str, both) {
		if (typeof str !== "string") {
			return str
		}

		// It is faster to just run `normalize` than it is to check if
		// we need to with a regex! (Check as it isn't available in old
		// Safari)
		var res = str.normalize ? str.normalize("NFD") : str

		// Equally, here we check if a regex is needed or not
		return res.length !== str.length ? (both === true ? str + " " : "") + res.replace(/[\u0300-\u036f]/g, "") : res
	}

	/**
	 * Determine if all values in the array are unique. This means we can short