Tie::Static 0.01 uses (caller, @_), 0.02 uses just @_ - am I right?
That's why I let Filter::Static add caller() if the newer Tie::Static is used.

As for the use of the name "static", the two statics are more similar than select() and select() are. I don't think there will be users that use Tie::Static (and import static) and Filter::Static in the same script. If they do, It's not a great problem, because the backslashes break the variable matching pattern (/[\$\@%]\w+/) and are kind of required to create the references :) (I don't think my $foo = "hello"; my $bar = \$foo; static $bar is likely to happen.)
In short: I don't think this will be any problem at all.

2;0 juerd@ouranos:~$ perl -e'undef christmas'
Segmentation fault
2;139 juerd@ouranos:~$
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