nl_tokens: Convert Buffer input call next or callback with error
pl_tokens: function convert ( options , buffer , next , callback ) { var gunzip = path . extname ( options . source ) === ".gz" ; if ( gunzip ) { zlib . gunzip ( buffer , function ( err , result ) { if ( err ) { callback ( common . prependMsgToErr ( err , options . source , true ) ) ; } else { next ( options , result && result . toString ( ) , callback ) ; } } ) ; } else { next ( options , buffer . toString ( ) , <mask> ) ; } }