Pear style class generation causes underscores in models_path to be replaced with slashes

In Doctrine/Import/Builder.php, if pear style generation is enabled, underscores are replaced with slashes to create the Pear style directory layout. The code that builder.php uses is below.

if ($this->_pearStyle) {
$writePath = str_replace('_', '/', $writePath);
}

If the models_path contains an underscore, for example "D:\Inetpub_EXT\app\models", the underscore also gets converted to a slash. All of the models end up being created in the "D:\Inetpub\EXT\app\models" directory.