Does the regex allowed in field validation support inverse matching, or negative lookaround? I've been unable to get it to match any string
except as given by the regex.
I'm actually trying to stop users registering and SHOUTING, i.e. entering names with too much uppercase, by detecting consecutive uppercase characters.
I've tried variants of the following without success:
Code:
^((?![A-Z][A-Z]).)*$
(?![A-Z]{2}/)
(?!^.*[A-Z]{2,}.*$)
Any ideas why these are not working, or of a different solution to this?
