Comment Form Inline Errors

WordPress Plugin, Requires WordPress, by

This plugin takes care of WordPress inner comments error handling, instead of showing the WordPress error page it displays the comment errors above the form, with a single line error description. All this out-of-the-box.

It also remembers what you've typed in, and prefills the form for you!

As it always is, I have written this small plugin as a behavioural modification of native WordPress ugliness that we couldn't allow to have on a clients website.