Re: sh(1) exec redirection

I can understand that NetBSD's sh derives (unless set -o posix is given) from 
SUS in cases where SUS documents brain-dead historical behaviour.

However, passing fd's opened by exec to commands called later on doesn't 
appear obviously brain-dead to me.

Wouldn't it be more appropriate to have a close-everything-on-exec flag that 
/etc/rc can use instead of violating SUS on purpose?