nl_tokens: Returns an array of dashed key names which are the alternative names for all camel - cased key names in a hash .
pl_tokens: function dashedKeyAlternatives ( hash ) { var keys = _ . keys ( toDashedProperties ( hash ) ) ; return _ . filter ( <mask> , function ( key ) { return key . search ( / [^-]-[a-z] / ) !== - 1 ; } ) ; }