code: function isSingleProperty(snippet) {
  		snippet = utils.trim(snippet);
  		
  		// check if it doesn't contain a comment and a newline
  		if (/\/\*|\n|\r/.test(snippet)) {
  			return false;
  		}
  		
  		// check if it's a valid snippet definition
  		if (!/^[a-z0-9\-]+\s*\:/i.test(snippet)) {
  			return false;
  		}
  		
  		return snippet.replace(/\$\{.+?\}/g, '').split(':').length == 2;
  	}
docs: Check if provided snippet contains only one CSS property and value.
  @param {String} snippet
  @returns {Boolean}