Levente Uzonyi uploaded a new version of Collections to project The Trunk: http://source.squeak.org/trunk/Collections-ul.901.mcz
==================== Summary ====================
Name: Collections-ul.901 Author: ul Time: 29 June 2020, 2:08:55.776619 am UUID: 8df577a2-3856-4432-b54c-25c93831b5a8 Ancestors: Collections-ul.900
Fix regression in ReadStream >> #match:. When the subCollection is not present in the receiver, the stream's position must be set to the end to match the original behavior.
=============== Diff against Collections-ul.900 ===============
Item was changed: ----- Method: ReadStream>>match: (in category 'positioning') ----- match: subCollection "Faster version than the one implemented by super, but due to my subclasses breaking various invariants true for actual ReadStreams, only use it when the receiver's class is ReadStream."
| matchPosition | self class == ReadStream ifFalse: [ ^super match: subCollection ]. subCollection isEmpty ifTrue: [ ^true ]. matchPosition := collection indexOfSubCollection: subCollection startingAt: position + 1. + matchPosition = 0 ifTrue: [ + position := readLimit. + ^false ]. - matchPosition = 0 ifTrue: [ ^false ]. matchPosition <= readLimit ifFalse: [ ^false ]. position := matchPosition + subCollection size - 1. ^true!