I'd like to use the case-insensitive modifier (/i) in the regular expression, under Validation, for a single line textbox in a form.
For example, if I were attempting to validate a URL that begins with http://... I want to allow these variations:
and so on. I realize that I can accomplish this with brackets, as in [Hh][Tt][Tt][Pp]://, but it gets more cumbersome as the pattern match gets longer.