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patch 9.1.0215: Half-page scrolling does not support smooth-scrolling

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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>
This commit is contained in:
Luuk van Baal
2024-03-28 10:07:29 +01:00
committed by Christian Brabandt
parent 982e191b38
commit 5a2e3ec9ac
12 changed files with 166 additions and 242 deletions
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4
src/edit.c
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@@ -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;