“delete local $hash{$key}” requires Perl v5.12

[jwilk]

From perl5120delta:

delete local now allows you to locally delete a hash entry.

Technically, the delete local $hash{$key} syntax was valid in previous versions of Perl, but, unexpectedly, it didn't delete entries locally.
I think it's safe to assume that all users of this syntax really want local delete, so Perl::MinimumVersion should report v5.12 as the minimum syntax version.

You can use this code for testing:

my %hash = (0 => 0);
{
    delete local $hash{0};
}
print '"delete local $hash{$key}" was ' . (defined $hash{0} ? '' : 'NOT '). "local\n";