I played a little with the squeak and the mantis tickets. First, I decided to use the usual way to indicate a mantis bug number: M1234. This way it is easily distinguishable from other version numbers. Then I changed the title of the mantis tickets to follow the number convention. M6355: [ENH] Lots of tests for Collections I started to change the squeak issues to include the mantis numbers in the title. It is in () at the end of the title. E.g. 7073 CollectionAndCollectionTest (M3574 M5700 M6367 M6777) So, if you are looking for a mantis number just search for Mantis and Squeak Tickets: http://code.google.com/p/pharo/issues/list?can=1&q=label%3AType-Mantis +OR+label%3AType-Squeak You get a page with all mantis numbers on it. I think this way it is not too hard to keep track. If you have a shell und you love nasty one liners you can do: wget -O - "http://code.google.com/p/pharo/issues/list?q=label:Type-Mantis%20OR% 20label:Type-Squeak&can=1" | perl -ne 'while(m/(M[0-9]+)/g) { print "$1 \n"; }' | sort which outputs: M2446 M3568 M3574 M4654 M5251 M5392 M5567 M5619 M5641 M5700 M5704 M6070 M6355 M6367 M6402 M6405 M6520 M6702 M6711 M6777 M7090 M7107 hope you like it, Norbert