fancy-ctrl-z.plugin.zsh

 1fancy-ctrl-z () {
 2  if [[ $#BUFFER -eq 0 ]]; then
 3    BUFFER="fg"
 4    zle accept-line -w
 5  else
 6    zle push-input -w
 7    zle clear-screen -w
 8  fi
 9}
10zle -N fancy-ctrl-z
11bindkey '^Z' fancy-ctrl-z
12