Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I would need to get a Regular Expression, which matches all Unicode control characters except for carriage return (0x0d), line feed (0x0a) and tabulator (0x09). Currently, my Regular Expression looks like this:
/\p{C}/u
I just need to define these three exceptions now.
I think you can use a negative lookahead here, combined with character classes.
What this does is use a negative lookahead to assert that the character is not one of those specified in the character class. Then it traverses the character again to match it with any control character.
I used the perl syntax for specifying single unicode points.
More discussion on lookarounds here
(Note that this has not been tested, but I think the concept is correct.)