very nice mod.
thx for that.

one question:
Would it be possible to make the sticky, moved, moerated and poll also selectable.

I'm sure you could, but not using this mod. You would just edit the phrase for those words and make them clickable. I'm not sure what the URL would be though since I've never looked into it.

How much work would it take to make a similar product that allows you to filter a user's posts in a thread?

In earlier versions of vBulletin you could click the number of replies in threadlist, then click on the number next to a name to search posts by that user within the thread. This seems to be broken as of 4.0 (I've tried on a 4.0.5 forum and a 4.1.0 forum).

The basic principal you have here would work great. Click on a word "Filter" next to the username in a post, and have it only show posts in that thread by the specified user.

I think a great deal of people would be very happy if you could make this.

This works just fine on my 4.1.0 test forum. Make sure you click the number, not the name. The name takes you to the profile, the number shows you the posts.

http://www.screencast-o-matic.com/watch/cXVQ3JXPH

Ontop of that, Search strips BBcode, it shortens messages, and it italicizes everything in a strange format.

The Filter commands would be a very simple one-click way to have all of the posts not by the specified user invisible. The posts by the specified user would keep all formatting.

Did you reindex your site after the upgrade? If you click on that particular users profile and click to View All Posts, do you get a list then? If not, then it sounds like his posts weren't indexed. Actually, are posts in that forum indexed or do you have it turned off in that forum?

That one is not my forum. My forum has problems because when I installed MediaWiki integration it added a "multi-content" search type.

But as I said the ability to filter as your mod seems to do would be better than working search anyway.

Edit: Out of curiosity, how do I check to see if my forum is indexing posts, and how do I enable that setting?

You could look to make sure your searchcore table is continually getting larger (normally would have more rows than the post table). You would know if you indexed it in the first place after the upgrade because that step takes a while. You would have indexing turned on for the forum (forum manager) and then it should be an automated task unless you have a large forum and turned off the setting and are having it done by a Scheduled Task (but you would know if you did that).

Ok Thanks. I never upgraded, but I found the options and reindexed just to be safe.

Now, is it possible to have this filter effect on posts like I'm asking?

I'm sure a modification to filter the thread like you want would be pretty easy. But to have it formatted how you want would be more tricky and require a few more plugins/modifications to the code.