Christoph Thiede uploaded a new version of Regex-Tests-Core to project The Inbox:
http://source.squeak.org/inbox/Regex-Tests-Core-ct.11.mcz

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

Name: Regex-Tests-Core-ct.11
Author: ct
Time: 8 September 2020, 5:06:20.887336 pm
UUID: 6d0bb586-18f2-1045-ba9c-6b288515c123
Ancestors: Regex-Tests-Core-nice.10

Adds regression test for capturing-like behavior of lookaround expressions

See also: http://forum.world.st/The-Inbox-Regex-Core-ct-56-mcz-tp5113011p5114971.html

=============== Diff against Regex-Tests-Core-nice.10 ===============

Item was added:
+ ----- Method: RxParserTest>>testLookaroundNullable (in category 'tests') -----
+ testLookaroundNullable
+ 
+ 	self should: ['(?<=a)?b' asRegex] raise: RegexSyntaxError.!