My favorite regex of all time

http://www.catonmat.net/blog/my-favorite-regex/

 

I thought I'd share my favorite regex of all time:

[ -~]

Any ideas what this regexp matches?

It matches all ASCII characters from the space to the tilde. What are those characters? They're all printable characters!

Take a look at the ASCII table. The printable characters start at the space and end at the tilde:

[ -~] matches all printable ascii characters (light blue background)

I love this.