CURLOPT_POSTREDIR(3) on macOS

The text 6d64e3f9f06d, 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.

how to act on a HTTP POST redirect

CURLOPT_POSTREDIR(3) on macOS now