## def
eval "function original_titel { $functions[title] }"
function title {
  if [ "$TAB_TITLE" != "" ];then 1=$TAB_TITLE;fi
  original_titel
}

## without the function I get
(eval):9: parse error near `}'
title:2: command not found: original_titel

## cmd
➜  ~  echo $functions[original_title]

➜  ~  echo $functions[title]
	if [ "$TAB_TITLE" != "" ]
	then
		1=$TAB_TITLE
	fi
	original_titel