curl_easy_escape(3) on macOS

The text 985a84e7d61a, as macOS 10.12.5, macOS 10.12.4, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.

URL encodes the given string

curl_easy_escape(3) on macOS now