In D6, I use a contrib module, but I would like to override a small bit of its behavior. I have a custom module for that, but my implementation of the relevant hook is called before the implementation in the contrib module, and so the contrib module's version "wins".
Is there any way to change it, and force my own hook to be called last?
Here are the specific details:
I would like to remove the default "Anonymous" user name for unregistered users in the comment form. I created a small custom module, tweak_comment_form, that implements form_alter hook and removes the default value from the name field (see the answers to my previous question about that).
However I also use a contrib module called RealName, which also implements form_alter. RealName does what I want for registered users (replaces user name with "real name"), but re-assigns default value to the name field.