if [[ ${globaldebug} == "true" ]]; then
  local debug=true
else
  local debug=false
fi

_list_blogs
typeset -A blog_cache
if [[ -f $blog_cache_file ]]; then
  while IFS=':' read -r name hash; do
    blog_cache[$name]=$hash
  	if (${debug}) _msg debug "${0:t}_msg_1" " ${blog_cache[${name}]}"
  done < "$blog_cache_file"
fi
make_blog_array=()
for blog_file in ${blogs_file_array[@]}; do
  current_hash=$(md5sum "$blog_file" | awk '{print $1}')

  if (${debug}) _msg debug "${0:t}_msg_2" " ${blog_file}"
  if (${debug}) _msg debug "${0:t}_msg_3" " ${current_hash}"
  if [[ ${blog_cache[$blog_file]} != "$current_hash" ]]; then
  	if (${debug}) _msg debug "${0:t}_msg_4" " ${blog_file}"
  	if (${debug}) _msg debug "${0:t}_msg_5" " ${current_hash}"
    make_blog_array+=("$blog_file")
    blog_cache[$blog_file]=$current_hash
  fi
done
: >| "$blog_cache_file"
for name in "${(@k)blog_cache}"; do
  echo "$name:${blog_cache[$name]}" >> "$blog_cache_file"
done