Validate field for all language characters through REGEX

Question

i need to validate a field for empty. But it should allow English and the Foreign languages characters(UTF-8) but not the special characters. I\'m not good at R

Answer 1

You can test for a unicode letter like this:

str.match(/\p{L}/u)

Or for the existence of a non-letter like this:

str.match(/[^\p{L}]/u)