username - display limits to 15 characters?

I've added the following to the bottom of my template.php file. I'm using the themename_username() format. The name of my theme is litehouse. I'm getting a blank page when I load anything that uses the theme.

Have you tested this on a Drupal 6 site or what it for Drupal 5? I think Drupal 6 doesn't like it. :(

/**
* Format a username with a higher limit for the length displayed than the
* default in theme_username().
*
* This implementation is 99% based on theme_username().
*
* @param $object
*   The user object to format, usually returned from user_load().
* @return
*   A string containing an HTML link to the user's page if the passed object
*   suggests that this is a site user. Otherwise, only the username is returned.
*/
function litehouse_username($object) {

  if ($object->uid && $object->name) {
    // Shorten the name when it is too long or it will break many tables.
    if (drupal_strlen($object->name) > 20) {
      $name = drupal_substr($object->name, 0, 15) .'...';
    }
    else {
      $name = $object->name;
    }

    if (user_access('access user profiles')) {
      $output = l($name, 'user/'. $object->uid, array('title' => t('View user profile.')));
    }
    else {
      $output = check_plain($name);
    }
  }
  else if ($object->name) {
    // Sometimes modules display content composed by people who are
    // not registered members of the site (e.g. mailing list or news
    // aggregator modules). This clause enables modules to display
    // the true author of the content.
    if ($object->homepage) {
      $output = l($object->name, $object->homepage);
    }
    else {
      $output = check_plain($object->name);
    }

    $output .= ' ('. t('not verified') .')';
  }
  else {
    $output = variable_get('anonymous', t('Anonymous'));
  }

  return $output;
}

My solution was to use the realname module.

Configure it with whatever replacement pattern you want.

In VIEWS you'll now be able to add the "real name" field, with an untrucated user name!

Bit late to this very old thread, but probably best do the override in the theme layer with _preprocess_username() (lines 19 & 20 are where you can alter the values):

function yourthemename_preprocess_username(&$variables) {
$account = $variables['account'];
$variables['extra'] = '';
if (empty($account->uid)) {
$variables['uid'] = 0;
if (theme_get_setting('toggle_comment_user_verification')) {
$variables['extra'] = ' (' . t('not verified') . ')';
}
}
else {
$variables['uid'] = (int) $account->uid;
}

// Set the name to a formatted name that is safe for printing and
// that won't break tables by being too long. Keep an unshortened,
// unsanitized version, in case other preprocess functions want to implement
// their own shortening logic or add markup. If they do so, they must ensure
// that $variables['name'] is safe for printing.
$name = $variables['name_raw'] = format_username($account);
if (drupal_strlen($name) > 35) {
$name = drupal_substr($name, 0, 30) . '...';
}
$variables['name'] = check_plain($name);
$variables['profile_access'] = user_access('access user profiles');
$variables['link_attributes'] = array();

// Populate link path and attributes if appropriate.
if ($variables['uid'] && $variables['profile_access']) {

// We are linking to a local user.
$variables['link_attributes'] = array(
'title' => t('View user profile.'),
);
$variables['link_path'] = 'user/' . $variables['uid'];
}
elseif (!empty($account->homepage)) {

// Like the 'class' attribute, the 'rel' attribute can hold a
// space-separated set of values, so initialize it as an array to make it
// easier for other preprocess functions to append to it.
$variables['link_attributes'] = array(
'rel' => array(
'nofollow',
),
);
$variables['link_path'] = $account->homepage;
$variables['homepage'] = $account->homepage;
}

// We do not want the l() function to check_plain() a second time.
$variables['link_options']['html'] = TRUE;

// Set a default class.
$variables['attributes_array'] = array(
'class' => array(
'username',
),
);
}