Pattern returns a glob pattern that matches the unrenamed temporary files created when writing to filename.

ReadFile is like ioutil.ReadFile, but on Windows retries spurious errors that may occur if the file is concurrently replaced.

WriteFile is like ioutil.WriteFile, but first writes data to an arbitrary file in the same directory as filename, then renames it atomically to the final name.

WriteToFile is a variant of WriteFile that accepts the data as an io.Reader instead of a slice.