Is there a kind of function factory in zsh?

[Leander Jedamus <ljedamus@xxxxxxxxxxxxxx>]

Hi!

I wonder if I could use a pattern for creating fucntions, that nearly 
look the same.
Background is I have to write a function for ssh, telnet, su, bash, zsh, 
tcsh and so on that all look like (for example for the ssh command):
ssh()
    {
      set_title "ssh $@"
      {
        command ssh "$@"
      } always {
        cd .
      }
    };# ssh()
How can I avoid writing all that code again and again?

Thanks in advance
Leander Jedamus