   "Go to the end of the current field."
   (interactive)
   (let* ((snippet (car (yas-active-snippets)))
-         (position (yas--field-end (yas--snippet-active-field snippet))))
+         (active-field (yas--snippet-active-field snippet))
+         (position (if (yas--field-p active-field) (yas--field-end active-field) -1)))
     (if (= (point) position)
         (move-end-of-line 1)
       (goto-char position))))

  "Go to the beginning of the current field."
  (interactive)
  (let* ((snippet (car (yas-active-snippets)))
         (position (yas--field-start (yas--snippet-active-field snippet))))
    (if (= (point) position)
        (move-beginning-of-line 1)
      (goto-char position))))

  (let ((field (or field (and yas--active-field-overlay
                              (overlay-buffer yas--active-field-overlay)
                              (overlay-get yas--active-field-overlay 'yas--field)))))
    (cond ((not (yas--field-p field))
           (delete-char 1))
          ((and (not (yas--field-modified-p field))
                (eq (point) (marker-position (yas--field-start field))))
           (yas--skip-and-clear field)
           (yas-next-field 1))
          ((eq (point) (marker-position (yas--field-end field))) nil)
          ((delete-char 1)))))

;;;###autoload
(defun +snippets/delete-to-start-of-field (&optional field)
  "Delete to start-of-field."
  (interactive)
  (unless field
    (setq field (and (overlayp yas--active-field-overlay)
                     (overlay-buffer yas--active-field-overlay)
                     (overlay-get yas--active-field-overlay 'yas--field))))
  (when (yas--field-p field)
    (let ((sof (marker-position (yas--field-start field))))
      (when (and field (> (point) sof))
        (delete-region sof (point))))))
