[Pharo-project] allowUnderscoreAssignment is not functional

Hi all, maybe I've missed something but whatever value is set to this preference, the result is that underscore is always allowed. Note that it is used by the scanner: Scanner>>xUnderscore Preferences allowUnderscoreAssignment ifFalse:[^self xIllegal]. self step. tokenType := #leftArrow. ^token := #':=' The question behind is do we keep this preference ? Cheers Alain