[O] How to get a list of all TODO keywords from defined variable `org-todo-keywords`?

[address@hidden]

I'm trying to select TODO keyword when doing org-capture.

Like this:

    (setq org-capture-templates
    '(("c" "[C]apture"
    entry (file "")
    ;; HACK: select todo keyword interactively from `org-todo-keywords'.
    ;; 1. command `org-todo'
    "* %(completing-read \"Todo keyword: \" (mapcar #'list org-todo-keywords-1) nil t) %^{Capture}\n\n%i\n%a\n\n%?"
    :prepend t
    :empty-lines 1
    )
    ...
    ))
  

But it is not working as I expected. I borrow this snippet code from command `org-todo`.

hope someone can provide a good solution for my purpose.

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