URL trouble since 1.4.4

Could you give me exactly your permalinks setting with % and slashes?

That’s not something I am able to reproduce.
Can you tell me what you enter as domains in Polylang settings?

I don’t understand what can happen.

in wp-config.php, can you temporarily replace

define('WP_DEBUG', false);

by

define('WP_DEBUG', true);
define('SCRIPT_DEBUG', true);
define('WP_DEBUG_LOG', true);
ini_set('display_errors','Off');

Activate Polylang 1.4.4

And in polylang/frontend/choose-lang-url.php replace

$requested_url  = (is_ssl() ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$redirect_url = $this->links_model->remove_language_from_link($requested_url);
$redirect_url = $this->links_model->add_language_to_link($redirect_url, $language);

by

$requested_url  = (is_ssl() ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
error_log('requested: ' . $requested_url);
$redirect_url = $this->links_model->remove_language_from_link($requested_url);
error_log('remove lang: ' . $redirect_url);
$redirect_url = $this->links_model->add_language_to_link($redirect_url, $language);
error_log('add lang: ' . $redirect_url);

Then load a page where you’ve the issue and report the output you get in wp-content/debug.log here.

Well. At least now I know which function is wrong…
Could you go in polylang/include/links-domain.php and replace

public function remove_language_from_link($url) {
	if (!empty($this->options['domains']))
		$url = preg_replace('#^('.implode('|', $this->options['domains']).')#', $this->home , $url);
	return $url;
}

by

public function remove_language_from_link($url) {
error_log('url: '.$url);
error_log(print_r($this->options['domains'], true));
error_log('pattern: ' . '#^('.implode('|', $this->options['domains']).')#');
error_log('home: '. $this->home);
error_log('opt: ' . get_option('home'));
	if (!empty($this->options['domains']))
		$url = preg_replace('#^('.implode('|', $this->options['domains']).')#', $this->home , $url);
	return $url;
}

NB: You should keep the debug mode to do this.

OK thanks. Now I understand. On my test site, I have no entry for the default language in the array $this->options[‘domains’], while you have an empty entry.

It means that a disabled input can be filled (or not) in $_POST the two different ways so I have to manage that.

Thanks a lot for all your tests. I will soon release a development version to fix this and will let you know when it will be available. Waiting for this, I guess you can stay with 1.4.3.

@chantal C:
Your problem has already been reported and should be solved in the current development version
http://wordpress.org/support/topic/failing-to-redirect-properly-after-update

@rémy
Could you test the development version (1.4.4.3)? It should fix your problem now (you will have to resave your Polylang settings after activating the new version to enable the changes to your database)

🙁 Let’s try something else.
Could you edit the file polylang/admin/settings.php at line 241 and replace:

if (3 == $this->options['force_lang'] && isset($_POST['domains']) && is_array($_POST['domains'])) {
	foreach ($_POST['domains'] as $key => $domain) {
		if (!empty($domain)) // don't store empty values. see http://wordpress.org/support/topic/url-trouble-since-144
			$this->options['domains'][$key] = esc_url_raw(trim($domain));
	}
}

by

if (3 == $this->options['force_lang'] && isset($_POST['domains']) && is_array($_POST['domains'])) {
	foreach ($_POST['domains'] as $key => $domain) {
		$this->options['domains'][$key] = esc_url_raw(trim($domain));
	}
	$this->options['domains'][$this->options['default_lang']] = get_option('home');
}

and then resave your Polylang settings again.