Links in comment as PHP code breaking the syntax

I think the problem here is the firing sequence - the PHP filter is firing after the URL-to-A filter, so is deconstructing the HTML. IMO the input filters should be reordered so the link is not turned into a link until it's already been processed by the PHP formatter.

That said, it's only breaking the formatting because the URL-to-A filter is incorrectly considering linebreaks to be part of the link. See what happens if add a space after the link:

// this is PHP comment
// @todo: http://drupal.org/node/1371968 
    unset($form['metatags']);

It's still undesirable (should be an actual link or not linkified) but at least it's not breaking the colour formatting.

There is already a report about this.

Duplicate of #1644662: Links in comment as PHP code breaking the syntax.

(actually #1310256: HTML filter runs after code filter, so URLs get linkified even if in code on d.o)

added link