nl_tokens: Handle escaped commas : { a \\ b }
pl_tokens: function escapeCommas ( str , arr , opts ) { if ( ! / \w, / . <mask> ( str ) ) { return arr . concat ( str . split ( '\\' ) . join ( '' ) ) ; } else { str = str . split ( '\\,' ) . join ( '__ESC_COMMA__' ) ; return map ( braces ( str , arr , opts ) , function ( ele ) { return ele . split ( '__ESC_COMMA__' ) . join ( ',' ) ; } ) ; } }