class Reline::Windows

def self.msys_tty?(io = @@hConsoleInputHandle)
  # check if fd is a pipe
  if @@GetFileType.call(io) != FILE_TYPE_PIPE
    return false
  end
  bufsize = 1024
  p_buffer = "\0" * bufsize
  res = @@GetFileInformationByHandleEx.call(io, FILE_NAME_INFO, p_buffer, bufsize - 2)
  return false if res == 0
  # get pipe name: p_buffer layout is:
  #   struct _FILE_NAME_INFO {
  #     DWORD FileNameLength;
  #     WCHAR FileName[1];
  #   } FILE_NAME_INFO
  len = p_buffer[0, 4].unpack1("L")
  name = p_buffer[4, len].encode(Encoding::UTF_8, Encoding::UTF_16LE, invalid: :replace)
  # Check if this could be a MSYS2 pty pipe ('\msys-XXXX-ptyN-XX')
  # or a cygwin pty pipe ('\cygwin-XXXX-ptyN-XX')
  name =~ /(msys-|cygwin-).*-pty/ ? true : false
end