Merge pull request #104 from vermiculus/preseve-position-on-refresh

Preseve position on refresh

1 files changed, 15 insertions, 9 deletions

diff --git a/sx-question-list.el b/sx-question-list.el
index 2965ede..fbed4ea 100644
--- a/sx-question-list.el
+++ b/sx-question-list.el
@@ -371,19 +371,25 @@ a new list before redisplaying."
   (setq sx-question-list--unread-count 0)
   (unless no-update
     (setq sx-question-list--pages-so-far 1))
-  (let ((question-list
-         (or (and no-update sx-question-list--dataset)
-             (and (functionp sx-question-list--refresh-function)
-                  (funcall sx-question-list--refresh-function))
-             (and (functionp sx-question-list--next-page-function)
-                  (funcall sx-question-list--next-page-function 1))
-             sx-question-list--dataset)))
+  (let* ((question-list
+          (or (and no-update sx-question-list--dataset)
+              (and (functionp sx-question-list--refresh-function)
+                   (funcall sx-question-list--refresh-function))
+              (and (functionp sx-question-list--next-page-function)
+                   (funcall sx-question-list--next-page-function 1))
+              sx-question-list--dataset))
+         ;; Preserve window positioning.
+         (window (get-buffer-window (current-buffer)))
+         (old-start (when window (window-start window))))
     (setq sx-question-list--dataset question-list)
     ;; Print the result.
     (setq tabulated-list-entries
           (mapcar sx-question-list--print-function
-                  (cl-remove-if #'sx-question--hidden-p question-list))))
-  (when redisplay (tabulated-list-print 'remember)))
+                  (cl-remove-if #'sx-question--hidden-p question-list)))
+    (when redisplay (tabulated-list-print 'remember))
+    (when window
+      (set-window-start window old-start)))
+  (sx-message "Done."))
 
 (defcustom sx-question-list-ago-string " ago"
   "String appended to descriptions of the time since something happened.