patch 9.1.0215: Half-page scrolling does not support smooth-scrolling Commit: https://github.com/vim/vim/commit/5a2e3ec9ac72b6e644fea4ebba7e632498296e2f Author: Luuk van Baal <luukvbaal@gmail.com> Date: Thu Mar 28 10:07:29 2024 +0100 patch 9.1.0215: Half-page scrolling does not support smooth-scrolling Problem: Page-wise scrolling with Ctrl-D/Ctrl-U implements it's own logic to change the topline and cursor. More logic than necessary for scrolling with Ctrl-F/Ctrl-B was removed in patch 9.1.0211. Solution: Re-use the logic from Ctrl-E/Ctrl-Y/Ctrl-F/Ctrl-B while staying backward compatible as much as possible. Restore some of the logic that determined how many lines will be scrolled (Luuk van Baal) closes: #14316 Signed-off-by: Luuk van Baal <luukvbaal@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

--- a/src/edit.c
+++ b/src/edit.c
@@ -4807,7 +4807,7 @@ ins_pageup(void)
     }
 
     tpos = curwin->w_cursor;
-    if (onepage(BACKWARD, 1L) == OK)
+    if (pagescroll(BACKWARD, 1L, FALSE) == OK)
     {
 	start_arrow(&tpos);
 	can_cindent = TRUE;
@@ -4864,7 +4864,7 @@ ins_pagedown(void)
     }
 
     tpos = curwin->w_cursor;
-    if (onepage(FORWARD, 1L) == OK)
+    if (pagescroll(FORWARD, 1L, FALSE) == OK)
     {
 	start_arrow(&tpos);
 	can_cindent = TRUE;