Disable strict bourne shell mode to get ksh behaviour in (S)hell

Enable features like arithmatic expression and thus make the debug aid
`FUNCS_ONLY=1 . /install.sub' work in those prompts.

'!' answers spawn their own ksh process, but (S)hell drops into /.profile
sourced by /bin/sh executed by init(8), i.e. a korn shell defaulting to
strict bourne shell mode.

Shell options in this interactive parent shell do not effect install.sub
aka. /install, /autoinstall and /upgrade as it is executed in a child.

OK afresh1

diff --git a/distrib/miniroot/dot.profile b/distrib/miniroot/dot.profile
index 8a47b33..03dccd7 100644 (file)
--- a/distrib/miniroot/dot.profile
+++ b/distrib/miniroot/dot.profile
@@ -1,4 +1,4 @@
-#      $OpenBSD: dot.profile,v 1.50 2022/05/09 22:42:53 deraadt Exp $
+#      $OpenBSD: dot.profile,v 1.51 2023/02/20 01:55:41 kn Exp $
 #      $NetBSD: dot.profile,v 1.1 1995/12/18 22:54:43 pk Exp $
 #
 # Copyright (c) 2009 Kenneth R. Westerback
@@ -32,6 +32,9 @@
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 
+# Turn off Strict Bourne shell.
+set +o sh
+
 export VNAME=$(sysctl -n kern.osrelease)
 export VERSION="${VNAME%.*}${VNAME#*.}"
 export ARCH=$(sysctl -n hw.machine)