How to jump to a mark using Elisp

Question

Suppose I store the current mark into a variable using mark or (mark-marker). Then I move point elsewhere and insert some text. Which function should I use to jump to the saved mark?

Answer 1

Save the mark as a marker:

(setq my-var (mark-marker))

Then:

(goto-char my-var)

This works regardless of the buffer where you set the variable to the marker:

(let ((buf  (marker-buffer foo)))
  (switch-to-buffer buf)(goto-char foo))

Or if you want to go to that place temporarily, in Lisp code (i.e., without switching to that buffer):

(with-current-buffer (marker-buffer foo)
  (goto-char foo))

Answer 2

The goto-char function works. It will teleport you to the mark in the same buffer.

(goto-char (mark))