The function to show current file's full path in mini buffer

Question

I need to get the full path of the file that I\'m editing with emacs.

• Is there a function for that?
• If not, what would be the elisp function for getti

Answer 1

I have the following code already in use for a long time. It copies the full file path to the kill ring when I press the middle mouse button on the buffer name in the mode-line. It copies just the buffer name to the kill-ring when I press shift-mouse-2 on the buffer-name in the mode-line.

(defun copy-buffer-file-name (event &optional bufName)
  "Copy buffer file name to kill ring.
If no file is associated with buffer just get buffer name.
"
  (interactive "eP")
  (save-selected-window
    (message "bufName: %S" bufName)
    (select-window (posn-window (event-start event)))
    (let ((name (or (unless bufName (buffer-file-name)) (buffer-name))))
      (message "Saved file name \"%s\" in killring." name)
      (kill-new name)
      name)))

(define-key mode-line-buffer-identification-keymap [mode-line mouse-2] 'copy-buffer-file-name)
(define-key mode-line-buffer-identification-keymap [mode-line S-mouse-2] '(lambda (e) (interactive "e") (copy-buffer-file-name e 't)))