Patrick Rein uploaded a new version of Regex-Core to project The Trunk:
http://source.squeak.org/trunk/Regex-Core-pre.51.mcz

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

Name: Regex-Core-pre.51
Author: pre
Time: 19 May 2016, 8:49:05.994548 pm
UUID: 49e3e29a-cf96-4f42-a8f1-4af75dbb9bca
Ancestors: Regex-Core-ul.50

Fixes an erroring test of RxMatcher by replacing a copy with a veryDeepCopy to sustain the integrity of the RxmLink tree.

=============== Diff against Regex-Core-ul.50 ===============

Item was changed:
  ----- Method: RxMatcher>>makeQuantified:min:max: (in category 'private') -----
  makeQuantified: anRxmLink min: min max: max 
  	"Perform recursive poor-man's transformation of the {<min>,<max>} quantifiers."
  	| aMatcher |
  	
  	"<atom>{,<max>}       ==>  (<atom>{1,<max>})?"
  	min = 0 ifTrue: [ 
  		^ self makeOptional: (self makeQuantified: anRxmLink min: 1 max: max) ].
  	
  	"<atom>{<min>,}       ==>  <atom>{<min>-1, <min>-1}<atom>+"
  	max ifNil: [
+ 		^ (self makeQuantified: anRxmLink min: 1 max: min-1) pointTailTo: (self makePlus: anRxmLink veryDeepCopy) ].
- 		^ (self makeQuantified: anRxmLink min: 1 max: min-1) pointTailTo: (self makePlus: anRxmLink copy) ].
  	
  	"<atom>{<max>,<max>}  ==>  <atom><atom> ... <atom>"
  	min = max 
  		ifTrue: [ 
+ 			aMatcher := anRxmLink veryDeepCopy.
+ 			(min-1) timesRepeat: [ aMatcher pointTailTo: anRxmLink veryDeepCopy ].
- 			aMatcher := anRxmLink copy.
- 			(min-1) timesRepeat: [ aMatcher pointTailTo: anRxmLink copy ].
  			^ aMatcher ].
  
  	"<atom>{<min>,<max>}  ==>  <atom>{<min>,<min>}(<atom>{1,<max>-1})?"
+ 	aMatcher := self makeOptional: anRxmLink veryDeepCopy.
- 	aMatcher := self makeOptional: anRxmLink copy.
  	(max - min - 1) timesRepeat: [ 
+ 		 aMatcher := self makeOptional: (anRxmLink veryDeepCopy pointTailTo: aMatcher) ].
- 		 aMatcher := self makeOptional: (anRxmLink copy pointTailTo: aMatcher) ].
  	^ (self makeQuantified: anRxmLink min: min max: min) pointTailTo: aMatcher!