How to remove special/hidden characters from a string with a regex expression

I want to remove the special/hidden characters from a string using a regex expression. Is there an easy way to get all escape characters or do I just need to add them all

If I need to add them all what are they?? Is there somewhere I can look to find a list?

Thanks

You're the person who decided you had to remove special, or hidden, or escape characters. I don't believe that Unicode defines any of those terms. So yes, you're going to have to come up with a definition or a list or something. Was this based on some real-life requirement?

Something like:

should work to remove anything that is not a letter or number, at least the hard ones. Just check the HEX values in an ASCII table to remove them in bulk like the sample here.

Hope this helps.

EDIT: I used the table at http://www.asciitable.com/ and the app at http://gskinner.com/RegExr/ to test this.

Regex has a character class, "\p{Graph}", which defines all visible characters. So, using the negate of that character class, should target all whitespaces, control characters, and other out of range characters.

Henry

I'm going to guess that Mr. Williams won't want to consider the space character as a special character to be deleted, but I could be wrong.