[analogy with ‘trufan’ from SF fandom] One who
exemplifies the primary values of hacker culture, esp. competence and
helpfulness to other hackers. A high compliment. He spent 6 hours
helping me bring up UUCP and netnews on my FOOBAR 4000 last week —
manifestly the act of a true-hacker.
Compare
demigod, oppose
munchkin.