http://www.perlmonks.org?node_id=1011880


in reply to can't use certain hashnames when traversing a slightly complex hash

Perl is trying to run a method. It means there is
$g->$key
somewhere without the curlies around $key. Moreover, the $key does not contain a string, it is a hash reference. Post the real code that causes the error.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ