See: https://issues.apache.org/bugzilla/show_bug.cgi?id=56427
I originally thought I could use -10 to mean read latest 10 messages, but -1 is already taken to mean read ALL messages. So I'm wondering what others think about the idea of using say '_10' to mean latest 10 messages? And '=10' to mean message number 10. These seem reasonable to me, but some may find these counter-intuitive. Other suggestions welcome. e.g. would it be better to have more radio buttons instead of special prefixes? [One advantage of a single text field is that it can be provided as a variable] Thoughts?
