Okay, here you go:
#!perl -w
use strict; # ALWAYS!
a("what");
b("the");
{
use vars ('$var');
local $var; # shared only between a() and somesub()
sub a { local $var = shift; _somesub() }
sub b { local $var = shift; _somesub() }
# sub routines with a leading _ usually denotes a private func.
sub _somesub { print $var, $/ }
}
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