hush: fix "set -e; false || x=1; echo OK"

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-misc/assignment5.right b/shell/ash_test/ash-misc/assignment5.right
new file mode 100644
index 0000000..a91554c
--- /dev/null
+++ b/shell/ash_test/ash-misc/assignment5.right
@@ -0,0 +1,5 @@
+Zero1:0
+Zero2:0
+Zero3:0
+Zero4:0 x:1 y:1
+Three:3 x:1 y:1
diff --git a/shell/ash_test/ash-misc/assignment5.tests b/shell/ash_test/ash-misc/assignment5.tests
new file mode 100755
index 0000000..0b81042
--- /dev/null
+++ b/shell/ash_test/ash-misc/assignment5.tests
@@ -0,0 +1,9 @@
+true;  a=1; echo Zero1:$?
+false; a=1; echo Zero2:$?
+false || a=1; echo Zero3:$?
+
+false || x=$? y=`echo $?`; echo Zero4:$? x:$x y:$y
+false || x=$? y=`echo $?; exit 3`; echo Three:$? x:$x y:$y
+
+#ash sets z=1 instead of z=3. disabled for now
+#false || x=$? y=`echo $?; exit 3` z=`echo $?`; echo x:$x y:$y z:$z