Regular expression help

[Andy Ousterhout]

What regular _expression_ would find a "#" followed by any number of blanks,
followed by 2-3 numbers

For example, I want to return 45 from this string:

Testing this string # 45 to 46

Andy

---

[Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings]

---