ruby - Regex match everything up to first period

Question

Trying to get a lazy regex match of everything up until the first period of a sentence.

e.g. Just want to get "jack and jill." from this sentence:
"jack and jill. went up the hill. to fetch a pail."

/.+./ matches the whole sentence (example)
/(.+?.)/ matches each instance (example)

Is there a way to just match the first instance?

Answer 1

/^([^.]+)/

Let's break it down,

• ^ is the newline anchor

• [^.] this matches any character that's not a period

• + to take until a period

And the expression is encapsulated with () to capture it.