It seems this is a real story from the time Ken Thompson started to work at Google:
"Q: I know Google has a policy where every new employee has to get checked out on languages before they're allowed to check code in. Which means you had to get checked out on C [which you co-created].
Thompson: Yeah, I haven't been.
Q. You haven't been! You're not allowed to check in code?
Thompson: I'm not allowed to check in code, no... I just haven't done it. I've so far found no need to."
If you don't have readability in a language, you just have to get a code review from someone who does have readability. You can still check in your code.
"Q: I know Google has a policy where every new employee has to get checked out on languages before they're allowed to check code in. Which means you had to get checked out on C [which you co-created].
Thompson: Yeah, I haven't been.
Q. You haven't been! You're not allowed to check in code?
Thompson: I'm not allowed to check in code, no... I just haven't done it. I've so far found no need to."
https://www.theregister.co.uk/2010/04/21/ken_thompson_take_o...
"So Mr Thompson, you say you have some programming skills..."
Does anybody have any update on that?