Function windows_candidates 

fn windows_candidates(
    env: &dyn Fn(&str) -> Option<OsString>,
    is_file: &dyn Fn(&Path) -> bool,
) -> Vec<Candidate>

Windows candidates, most familiar first: PowerShell 7, Windows PowerShell, Command Prompt, Git Bash, MSYS2 and Cygwin bash, then Nushell and fish on PATH.