nl_tokens: A variable entity using the protective {} e . g .
pl_tokens: function ( ) { var curly , index = parserInput . i ; if ( parserInput . currentChar ( ) === '@' && ( curly = parserInput . $re ( / ^@\{([\w-]+)\} / ) ) ) { return <mask> ( tree . Variable ) ( '@' + curly [ 1 ] , index , fileInfo ) ; } }