Since I always forget some important things about Regex, I’ll write it down here:

Greedy vs Non-Greedy
If you have something like “hello|world|!” and you want to get only the first part before the first Delimiter (which obviously is “|”) your first try could look like:
(.*)\|
That one would match “hello|world” since by default Regex is Greedy (aka. “take as much as possible”).

The old-fashioned way was:
([^\|]+)
This one does match unless the “|” Sign is found.

Now Regex has a much nicer solution:
(.*?)\|
The added “?” makes it Non-Greedy (aka. “take as less as possible)

Non-Capturing Group
Sometimes you want to create a Group which is not captured. Just begin those Groups with an “?:” and it will not get captured.
Example:
(?:abc)