Useful commands

citre-jump+

1. Emacs has built-in xref support for Elisp,
2. You may not want to use tags file for Elisp.

Below is a command that tries citre-jump first, and when fail, falllback to xref. This is great for similar situations.

(defun citre-jump+ ()
  (interactive)
  (condition-case _
      (citre-jump)
    (error (let* ((xref-prompt-for-identifier nil))
             (call-interactively #'xref-find-definitions)))))

Jump back enhancement

For those who are using Citre with other tools (imenu, grep...):

(defun my--push-point-to-xref-marker-stack (&rest r)
  (xref-push-marker-stack (point-marker)))
(dolist (func '(find-function
                counsel-imenu
                helm-imenu
                projectile-grep
                helm-grep-ag
                counsel-rg
                lsp-ivy-workspace-symbol
                citre-jump))
  (advice-add func :before 'my--push-point-to-xref-marker-stack))

You can jump back with any of them using M-,.

Or for those who are using citre with evil-mode:

(evil-add-command-properties #'citre-jump :jump t)

Now you can jump back with C-o.