Open already saved post unless prefix arg

exitter.el

@@ -563,13 +563,16 @@ Including ancestors and descendants, if any."
 (defvar exitter-dir (locate-user-emacs-file "exitter")
   "Path to local directory of saved threads.")
 
+(defun exitter-post-file-name (id)
+  (format (file-name-concat exitter-dir (format "%s.org" id))))
+
 (defun exitter-save-posts (filtered-details id)
   ;; (pp filtered-details)
   (if (length= filtered-details 0)
       (message "Empty filtered-details - will not save.")
     (exitter-save-text-and-switch-to-buffer
      (exitter-format-posts filtered-details)
-     (format (file-name-concat exitter-dir (format "%s.org" id))))))
+     (exitter-post-file-name id))))
 
 (defun exitter-post-url (user post-id)
   (format "https://x.com/%s/status/%s" user post-id))
@@ -611,12 +614,16 @@ Including ancestors and descendants, if any."
   (string-match-p "^/[^/]+/status/\\([0-9]+\\)"
                   (url-filename (url-generic-parse-url url))))
 
-(defun exitter-open-post (url)
-  (interactive "sTwitter link: ")
+(defun exitter-open-post (url &optional arg)
+  (interactive "sTwitter link: \nP")
   (let ((path-etc (url-filename (url-generic-parse-url url))))
     (unless (string-match "^/[^/]+/status/\\([0-9]+\\)" path-etc)
       (error "Not a valid x/twitter (or a frontend) url!"))
-    (exitter-get-tweet (match-string 1 path-etc))))
+    (let* ((id (match-string 1 path-etc))
+           (file-name (exitter-post-file-name id)))
+      (if (or arg (not (file-exists-p file-name)))
+          (exitter-get-tweet (match-string 1 path-etc))
+        (find-file file-name)))))
 
 ;;; utilities