How to edit title on Edit post pages?

The <title> tag in pages for post edit is Edit Post < Site name — WordPress. I want to change it to Edit Post < Site name – The title of the post in editing. Is this possible? Where can I locate the header of this page? Apparently it cannot be in the theme.

Answers:

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Method 1

Add this code instead on your functions.php, this will change the post and product title to the post or product that is being edit:

add_filter('admin_title', 'my_admin_title', 10, 2);
function my_admin_title($admin_title, $title)
{
        global $post, $action;
        if ( isset($post->post_title) and $action == 'edit' ){
        return 'Edit < '.$post->post_title.' - '.get_bloginfo('name');
        } else {
            return $title .' - ' .get_bloginfo('name');
        }
}

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