>	a) Modify openpty(3) to skip ttyv. This is the easiest
>	   solution for now, but we lose 16 ptys. I'm going to
>	   commit this for now; we can always revert once one
>	   of the above occurs.

#ifdef __i386__ || __prep__ ...
	use "pqrstuwx..."
#else
	use "pqrstuvwx..."
#endif

?

>	b) Implement SYSV style pty cloning. This has many benefits,
>	   a people have been claiming we need it for ages, but we
>	   don't have it yet. It still doesn't get around the fact
>	   we'll still probably have BSD style entries still around,
>	   so I'd like to clean up this ttyv problem.

indeed.  solaris still has them, for example...

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