theme_suffix incorrect for pre-D6 in drush_core_find_project_path?

Under D5, preg_match throws an error when running drush_scan_directory() called from drush_core_find_project_path()

It looks like the definition for $theme_suffix contains a typo - forward slash instead of backslash.

Should read:

function drush_core_find_project_path($target) {
  $theme_suffix = drush_drupal_major_version() >= 6 ? '.info' : '\style.css';

Patch attached (although not created from CVS - sorry).