Negate match for word in the beginning of string in RE2 syntax?

Question

Let\'s say that I have following strings:

• mail to
• tel:+358123456
• http://www.google.fi
• mailto:foo@bar.fi
• hello world

Answer 1

There is no drop-in workaround for the lack of negative lookbehind on RE2 that I know of.

Why don't you match on strings that do start with those keywords instead? Then you can dismiss those.