# dotMatchesNewlines(_:) Returns a regular expression where the “any” metacharacter (`.`) also matches against the start and end of a line. ``` func dotMatchesNewlines(_ dotMatchesNewlines: Bool = true) -> Regex.RegexOutput> ``` ## Parameters `dotMatchesNewlines` A Boolean value indicating whether `.` should match a newline character. ## Return Value The modified regular expression. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)