PassThrough streams (but more importantly Transform streams) never emit an "end" event

[TooTallNate]

test case:

var fs = require('fs');
var assert = require('assert');
var PassThrough = require('readable-stream/passthrough');

var p = new PassThrough();
var f = fs.createReadStream(__filename);
var pEnd = false;
var fEnd = false;
f.on('end', function () {
  console.error('f "end" event');
  fEnd = true;
});
p.on('end', function () {
  console.error('p "end" event');
  pEnd = true;
});
process.on('exit', function () {
  assert(fEnd, 'no fs.ReadStream "end" event');
  assert(pEnd, 'no Passthrough "end" event');
});
f.pipe(p);

[TooTallNate]

nvm, I'm retarded, there's no consumer on the p end...