kernel and most of userland : c : which edition?

[Lowell Gilbert]

Mayuresh Kathe <mayuresh at kathe.in> writes:

> which edition of c is-being/has-been used to write the majority of the
> kernel and userland?
> illumos people are mandating c99 for all new code and have heard about
> them taking the efforts to migrate old code to c99 too.
> is there any such movement in coding standards happening in
> freebsd-land too?

See "man 7 style" but the basic gist is that c99 is expected for new
code and that updating older code to c99 is typical practice when
changing that code for other reasons.