#compdef ,
local bin_dir="aet-bin"
local found_bin_dir=""

current_dir=$(pwd)
found_bin_dir=$current_dir/$bin_dir
while [ ! -d $found_bin_dir ]; do
  if [[ $current_dir == $HOME ]]; then
    found_bin_dir=$HOME/bin
    break
  fi

  current_dir=$(realpath "$current_dir/..")
  found_bin_dir=$current_dir/$bin_dir
done

_files -g "^," -W $found_bin_dir