A new version of Regex-Core was added to project The Inbox:
http://source.squeak.org/inbox/Regex-Core-ct.73.mcz

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

Name: Regex-Core-ct.73
Author: ct
Time: 28 October 2021, 6:12:10.889233 am
UUID: d2e4b99c-af69-ef4f-afaa-4a052eb6ea07
Ancestors: Regex-Core-mt.61

Removes longly obsolete constant on RxsNode. #printOn:withIndent: is not even in the symbol table of the default image ...

=============== Diff against Regex-Core-mt.61 ===============

Item was removed:
- ----- Method: RxsNode>>indentCharacter (in category 'constants') -----
- indentCharacter
- 	"Normally, #printOn:withIndent: method in subclasses
- 	print several characters returned by this method to indicate
- 	the tree structure."
- 
- 	^$+!