How do use emacs-state in certain modes?

[Óscar Fuentes]

jenia.ivlev at gmail.com (jenia.ivlev) writes:

> I want to use emacs-state in term-mode and undo-tree-mode.
> How do I achieve that?
> I tried:
>     (add-to-list 'evil-emacs-state-modes undo-tree-mode)
>
> This didn't work for some reason.
>
> So again, What should I do to be in emacs-state in term-mode for
> exmaple?

You need to quote the name of the mode:

(add-to-list 'evil-emacs-state-modes 'undo-tree-mode)
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Alternatively, you can switch to Emacs mode anytime with C-z.