Sub::Call::Tail

I've just released Sub::Call::Tail which allows for a much more natural tail call syntax than Perl's goto built in.

It provides a tail keyword that modifies normal invocations to behave like goto &sub, without needing the ugly @_ manipulation.

Instead of this horrible kludge:

@_ = ( $foo, $bar );
goto &foo;

You can now write:

tail foo($foo, $bar);

And much more importantly this method call emulation atrocity:

@_ = ( $object, $foo, $bar );
goto $object->can("foo");

Can now be written as:

tail $object->foo($foo, $bar);

Finally we can write infinitely tail recursive and CPS code with a constant stack space, without the syntactic letdown that is goto. Lambdacamels rejoice!

Thanks so much to Zefram for his numerous tests and contributions.