Regex, match any character after match

Question

I'm trying to match the entire string when I have identified the middle part.

I have the string:

first:second:third:forth:fifth

I wish to match it when I write for example: :third:

I do not wish to match it when I write for example :sixth:

I've figured out the first half, been looking around for the regex to extend to include any character after the match.

Answer 1

You want a look-ahead check:

(?=.*:third:).*

https://regex101.com/r/48Adar/1