[fw-general] No numbers in module names

[Ovidiu EFTIMIE]

Hi,
I just discovered that numbers are not allowed in the modules directory names

Zend_Controller_Front.php
 public function addModuleDirectory($path)
    {
  ..............................................................................
            // Don't use SCCS directories as modules
            if (preg_match('/^[^a-z]/i', $module) || ('CVS' == $module)) {
                continue;
            }
.......................................................................................

        return $this;
    }

Is this a bug ?
How about adding numbers ?

preg_match('/^[^a-z0-9]/i', $module)

Ovidiu