$sys.capture.options will become normal data

[skruppy]

Reproduction

Taking the example from the documentation http://static.invenzzia.org/docs/opt/2_0/book/en/syntax.instructions.capture.html using Opt 2.1 beta 1.

{u:$sys.capture.options}

Result

The example will compile like a normal variable:

<?php echo $ctx->_data['sys']['capture']['options'];   ?>

This won't throw an exception, but also won't do anything else.

Expected

<?php echo $self::$_capture['options'];   ?>