Q: interoperability of local vars and option nounset

[Nardmann, Heiko]

Hi together,

short: is there any way to get informed about unset local variable while
having option 'nounset' activated?

Long: the problem with 'local' is that variable declared this way are
visible inside the children, too. So the behaviour of option 'nounset'
depends on the way a function is called - either with a caller function
with the (locally) unset variable already set or without one.

Lets have a look at my example script:

-------------------------------------------------------
set -o nounset

function g()
{
  echo "g: myvar=$myvar"
}

function f()
{
  local myvar="test"

  echo "f: myvar=$myvar"

  g
}

f
-------------------------------------------------------

This way all is fine for bash but not for me since myvar is not set
inside g(). So if I call g() directly instead of f() then 'nounset'
gives me the error that I want.

This results into the question whether it is possible to get an error
for such situations, too?

Thanks in advance!

Kind regards

--
Heiko Nardmann