POSIX-Compliant Way to Scope Variables to a Function in a Shell Script

Question

Is there a POSIX Compliant way to limit the scope of a variable to the function it is declared in? i.e.:

Testing()
{
    TEST=\"testing\"
}

Testing
echo \"T         


        

Answer 1

I believe the closest thing would be to put the function body inside a subshell.

E.g. try this

foo()
{
  ( x=43 ; echo $x )
}

x=42
echo $x
foo
echo $x