text: var spawn = require( "spawnback" );
  
  exports = module.exports = getAuthors;
  
  function getAuthors( options, callback ) {
  	spawn( "git",
  		[ "log", "--pretty=%aN <%aE>", options.dir || "." ],
  	function( error, result ) {
  		if ( error ) {
  			return callback( error );
  		}
  
  		var tracked = {};
  		var authors = result.trimRight().split( "\n" )
  			.concat( (options.priorAuthors || []).reverse() )
  			.reverse()
  			.filter(function( author ) {
  				var first = !tracked[ author ];
  				tracked[ author ] = true;
  				return first;
  			});
  
  		callback( null, authors );
  	});
  }
  