public function save_changes()
 {
     if (!isset($_POST['GitiumSubmitSaveChanges'])) {
         return;
     }
     check_admin_referer('gitium-admin');
     gitium_enable_maintenance_mode() or wp_die(__('Could not enable the maintenance mode!', 'gitium'));
     $this->git->add();
     $commitmsg = sprintf(__('Merged changes from %s on %s', 'gitium'), get_site_url(), date('m.d.Y'));
     if (isset($_POST['commitmsg']) && !empty($_POST['commitmsg'])) {
         $commitmsg = $_POST['commitmsg'];
     }
     $current_user = wp_get_current_user();
     $commit = $this->git->commit($commitmsg, $current_user->display_name, $current_user->user_email);
     if (!$commit) {
         $this->redirect(__('Could not commit!', 'gitium'));
     }
     $merge_success = gitium_merge_and_push($commit);
     gitium_disable_maintenance_mode();
     if (!$merge_success) {
         $this->redirect(__('Merge failed: ', 'gitium') . $this->git->get_last_error());
     }
     $this->success_redirect(sprintf(__('Pushed commit: `%s`', 'gitium'), $commitmsg));
 }
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function exit_with_error($message)
{
    gitium_disable_maintenance_mode();
    wp_die($message);
}