I remember learning that \d was not the same as [0-9]. \d is 'digit in any language, not just 0 to 9', so it'll activate on digits other than Arabic numerals.

I remember learning that \d was not the same as [0-9]. \d is 'digit in any language, not just 0 to 9', so it'll activate on digits other than Arabic numerals. The SRL documentation doesn't make it clear if they mean 'number' to be 'only numbers 0 to 9' or 'any digit in any language'.