The missing [lazarus] tag in the subject was just a fluke of the way those couple of emails were written.

The emails entitled

Re: Missing files ...

didn't have it because the original email started between Marc and myself and was later included onto the list. The current procmail filter on the list only adds the [lazarus] tag if it doesn't see that the email already has a 'Re:' added. That is why that thread was missing the tag.

Now the email you sent has the tag missing again due to a fluke. It will also not add the tag if it sees that the subject already has a [lazarus] tag in it. Your subject was asking about the tag by including an example of the tag. So again the procmail filter ignored it.

Maybe you should set up a filter on your email client like mine. Since all the emails from the list come from you can use a filter that checks

resent-from

and if it contains the word lazarus move it accordingly.