I checked and `#each_line` only takes a string, not a regex:
```ruby
s.each_line(/\r?\n/) { |l| puts l.inspect }
# => TypeError: can't convert Regexp into String
```
If we can reliably determine what we should use for line separator, then we could do something like
```ruby
string.each_line(Ohai.newline) {|line| stuff }
```