On macOS, `real_path ''` outputs `$PWD/` (with a slash appended); whereas realpath actual (which real_path uses when it's available) errors with: ``` $ real_path '' realpath: '': No such file or directory ```
On macOS,
real_path ''outputs$PWD/(with a slash appended); whereas realpath actual (which real_path uses when it's available) errors with: