set_value() not handling arrays for form field names properly

[eluser]Kenzie[/eluser]
When using an array for a form field name, redisplaying the value with set_value when there's a validation error results in a string of "Array" instead of the actual submitted value.

Code:

$this->form_validation->set_rules('options[]', 'Options', 'required');
<input type="text" name="options[]" value="<?php echo set_value('options[]'); ?>" size="50" />

Tested with CI 1.7.1, PHP 5.2.6