The tab completion sniffs the `--help` output to determine whether it should tab-complete `--long` flags and if so whether it should include `--context` (SELinu

The tab completion sniffs the `--help` output to determine whether it should tab-complete `--long` flags and if so whether it should include `--context` (SELinux) among them. https://github.com/zsh-users/zsh/blob/master/Completion/Unix/Command/_mkdir https://github.com/zsh-users/zsh/blob/master/Completion/Unix...