lib/attributes.js
function isUnquoted(code) {
	return !isNaN(code) && !isQuote(code) && !isSpace(code) && !isTerminator(code);
}
function isUnquoted(code) {
	return !isNaN(code) && !isQuote(code) && !isSpace(code) && !isTerminator(code);
}
function isUnquoted ( code ) { return ! isNaN ( code ) && ! isQuote ( code ) && ! isSpace ( code ) && ! isTerminator ( code ) ; }
Check if given character code is valid unquoted value
@param  {Number}  code
@return {Boolean}
Check if given character code is valid unquoted value