Christoph Thiede uploaded a new version of Morphic to project The Inbox: http://source.squeak.org/inbox/Morphic-ct.1635.mcz
==================== Summary ====================
Name: Morphic-ct.1635 Author: ct Time: 29 February 2020, 12:39:08.00383 pm UUID: 1d028c27-ec3c-fd4f-924c-5c0372d0323e Ancestors: Morphic-mt.1631
Proposal: Revive #errorOnStep detection. Introduce #setErrorOnStep to keep it (quite) easy to add non-morphic receivers into the steplist (such as ObjectExplorer). Hm, should we maybe define #setErrorOnStep as a method stub on Object?
=============== Diff against Morphic-mt.1631 ===============
Item was added: + ----- Method: Morph>>setErrorOnStep (in category 'WiW support') ----- + setErrorOnStep + + self setProperty: #errorOnStep toValue: true.!
Item was added: + ----- Method: StepMessage>>value: (in category 'evaluating') ----- + value: anArgument + + ^ [super value: anArgument] + ifCurtailed: [ + (self receiver respondsTo: #setErrorOnStep) + ifTrue: [self receiver setErrorOnStep]]!