I'm saying that on OS X stat'ing /bin/zsh and /bin/zsh/ (or /bin/zsh/.) gives different results:% stat /bin/zsh16777220 721698 -rwxr-xr-x 1 root wheel 0 610288 "Feb 6 22:24:24 2018" "Sep 21 06:35:23 2017" "Nov 6 13:34:29 2017" "Sep 21 06:35:23 2017" 4194304 808 0x80020 /bin/zsh% stat /bin/zsh/.stat: /bin/zsh/.: stat: Not a directory% stat /bin/zsh/stat: /bin/zsh/: stat: Not a directory%That's the behavior required by POSIX, and Linux behaves in exactly the same way, so it's not something where we'd need to special-case macOS.