How configure keybinding for Yasnippet only?

Question

When you insert a snippet from Yasnippet, you have this, for example

# --------------------------------------------------------------
# $1 (`(insert-date)`)
# --------------------------------------------------------------
$2

Then you press tab, to switch from the place $1 to the place $2.

If you are not in a snippet, the tab key works normal.

I figured out the function that's get called when you press Tab into snippet, is yas-next-field. I would like to bind the function to another key instead Tab.

But only when it's inside a snippet, not affecting the normal working of another key outside snippet, like Tab already is.

But I couldn't find any refefence on internet about keymapping for only inside yasnippet, not as normal key.

Thanks in advance for the suggestion, it's really appreciated.

Answer 1

Customize yas-keymap for that.

(eval-after-load 'yasnippet
  '(progn
     (define-key yas-keymap (kbd "TAB") nil)
     (define-key yas-keymap (kbd "C-o") 'yas-next-field-or-maybe-expand)))