Eliot Miranda uploaded a new version of Monticello to project The Trunk:
http://source.squeak.org/trunk/Monticello-eem.763.mcz

==================== Summary ====================

Name: Monticello-eem.763
Author: eem
Time: 30 December 2021, 12:02:50.794873 pm
UUID: 05d83387-607f-405a-b895-891651a739a1
Ancestors: Monticello-mt.762

MCPatchOperation's subclasses implementations of #= prevent comparison with arbitr5ary objects.  Add Object>>isMCPatchOperation and use it in the #= implementations. Sp now one can do e.g. 

SequenceableCollection allSubInstances select: [:s| s isCompiledCode not and: [(s indexOfSubCollection: #(2 2 2 2 3 2 2 1 1 1 2 3 3 3 3 4)) > 0]]

without error.

=============== Diff against Monticello-mt.762 ===============

Item was changed:
  ----- Method: MCAddition>>= (in category 'comparing') -----
  = other
+ 	^other isMCPatchOperation
+ 	 and: [other isAddition
+ 	 and: [definition = other definition]]!
- 	^ other isAddition and: [definition = other definition]!

Item was changed:
  ----- Method: MCModification>>= (in category 'comparing') -----
  = other
+ 	^other isMCPatchOperation
+ 	 and: [other isModification 
+ 	 and: [obsoletion = other obsoletion
+ 	 and: [modification = other modification]]]!
- 	^ other isModification 
- 	and: [obsoletion = other obsoletion
- 	and: [modification = other modification]]!

Item was added:
+ ----- Method: MCPatchOperation>>isMCPatchOperation (in category 'testing') -----
+ isMCPatchOperation
+ 	^true!

Item was changed:
  ----- Method: MCRemoval>>= (in category 'comparing') -----
  = other
+ 	^other isMCPatchOperation
+ 	 and: [other isRemoval
+ 	 and: [definition = other definition]]!
- 	^ other isRemoval and: [definition = other definition]!

Item was added:
+ ----- Method: Object>>isMCPatchOperation (in category '*Monticello-Patching-testing') -----
+ isMCPatchOperation
+ 	^false!