Split a string into an array of regex matches, or a single result if only a single match

String.prototype.regex

	/**
	 * Split a string into an array of regex matches, or a single result if only a single match
	 * @param {RegExp} r The pattern to check against
	 * @return {Array|string|number} The matches
	 */
	String.prototype.regex = function(r) {
		var a = this.match(r), i, rx;
		if (a) {
			if (r.global) {
				if (/(^|[^\\]|[^\\](\\\\)*)\([^?]/.test(r.source)) { // Try to match "(blah" but not "\(blah" or "(?:blah" - ignore invalid regexp
					rx = new RegExp(r.source, (r.ignoreCase ? "i" : "") + (r.multiline ? "m" : ""));
				}
			} else {
				a.shift();
			}
			i = a.length;
			while (i--) {
				if (a[i]) {
					if (rx) {
						a[i] = a[i].regex(rx);
					} else {
						if (a[i].search(/^[\-+]?\d*\.?\d+(?:e[\-+]?\d+)?$/i) >= 0) {
							a[i] = parseFloat(a[i]);
						}
					}
				}
			}
			if (!rx && a.length === 1) {
				return a[0];
			}
		}
		return a;
	};