48560: add TYPESET_TO_UNSET option to remove initialization of parameters

Changes typeset such that ${newparam-notset} yields "notset" and
"typeset -p newparam" does not show an assignment to the parameter.  This
is similar to the default behavior of bash and ksh, with minor differences
in typeset output.

Also add tests for some POSIX incompatibilities plus minor changes for test
harness robustness.

1 files changed, 6 insertions, 6 deletions

diff --git a/Test/V10private.ztst b/Test/V10private.ztst
index a3a63867b..03e8259d5 100644
--- a/Test/V10private.ztst
+++ b/Test/V10private.ztst
@@ -19,14 +19,14 @@
  () {
   print $scalar_test
   private scalar_test
-  print $+scalar_test
+  typeset +m scalar_test
   unset scalar_test
   print $+scalar_test
  }
  print $scalar_test
 0:basic scope hiding
 >toplevel
->1
+>local scalar_test
 >0
 >toplevel
 
@@ -45,14 +45,14 @@
  print $+unset_test
  () {
   private unset_test
-  print $+unset_test
+  typeset +m unset_test
   unset_test=setme
   print $unset_test
  }
  print $+unset_test
 0:variable defined only in scope
 >0
->1
+>local unset_test
 >setme
 >0
 
@@ -62,13 +62,13 @@
   local -Pa array_test=(in function)
   () {
    private array_test
-   print $+array_test
+   typeset +m array_test
   }
   print $array_test
  }
  print $array_test
 0:nested scope with different type, correctly restored
->1
+>local array_test
 >in function
 >top level