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 j

Answer 1

I would be inclined to use a regex, but there are other options.

str = "jack and jill. went up the hill. supposedly to fetch a pail of water."
str[0..i] if i = str.index('.')
  #=> "jack and jill."

str = "three blind mice"
str[0..i] if i = str.index('.')
  #=> nil