Issue when suspending sysinst(8) with Ctrl+Z

["Rocky Hotas" <rockyhotas%post.com@localhost>]

Hi all :)!

When installing NetBSD, there is sometimes need to go to a prompt to read
dmesg or run some other commands. This is possible (and suggested by the
guide), typing Ctrl+Z: then, sysinst(8) itself prints that it can be resumed
typing `exit' or Ctrl+D.

With the NetBSD 8.0 sysinst(8) on amd64, `exit' or Ctrl+D produce the effect
to restart sysinst(8) from the beginning, so any possible setting/setup made
till that point is lost. I would like to signal this for anyone who tries to
install NetBSD 8.0 and needs to suspend sysinst(8).

Leot and I investigated a bit about this problem and it seems to be an sh(1)
bug. It was not present in -current. In 8.0, after having updated and
rebuilt the code of sh(1), sysinst(8) worked correctly.

The problem continues to affect, obviously, all the (at least, amd64)
existing install images of NetBSD 8.0, with the related version of sh(1).

Bye!

Rocky