30346 ----- 11452 Adding a trait to a composition makes too many changes to a class https://pharo.fogbugz.com/f/cases/11452 11426 Extract the logic that opens the .sources and .changes files https://pharo.fogbugz.com/f/cases/11426 Diff information: http://smalltalkhub.com/mc/Pharo/Pharo30/main/System-Support-MarcusDenker.90... http://smalltalkhub.com/mc/Pharo/Pharo30/main/Slot-MarcusDenker.375.diff