I am not sure what Brian was thinking but that is not the way to turn on pull-ups using the standard Arduino software.
I know that now. When I wrote that reply I hadn't realized the simplified call was not part of the Arduino.
Brian, did you actually try that code?
Yup. It does what you'd expect. The Teensy creator enhanced wiring_digital.c to support the simplified call. And I like it!
- Brian