in reply to Regex for last digit should not be "2"

You've already received two suggestions meaning "not 2". Here's what the difference between them is:

[013-9]

This means "either 0, or 1, or anything between 3 and 9".

[^2]

This means "anything other than 2", so while it would not match "2" it would match non-numeric characters like "x".

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'