patch 9.2.0228: still possible flicker

Commit: 
https://github.com/vim/vim/commit/0b257ecb90052e74a45ce4a44f968d3ce9c35681
Author: Yasuhiro Matsumoto <[email protected]>
Date:   Sun Mar 22 17:21:09 2026 +0000

    patch 9.2.0228: still possible flicker
    
    Problem:  still possible flicker
    Solution: Use redraw_as_cleared() instead of screenclear() to avoid
              flicker (Yasuhiro Matsumoto).
    
    When the window width matches the frame width, screenclear() causes
    visible flicker. Use redraw_as_cleared() instead which marks the
    screen for redraw without actually clearing it.
    
    closes: #19732
    
    Signed-off-by: Yasuhiro Matsumoto <[email protected]>
    Signed-off-by: Christian Brabandt <[email protected]>

diff --git a/src/screen.c b/src/screen.c
index 4f7fc3511..fa3b3860f 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3819,7 +3819,7 @@ win_do_lines(
            && wp->w_width == topframe->fr_width)
     {
        if (!no_win_do_lines_ins)
-           screenclear();          // will set wp->w_lines_valid to 0
+           redraw_as_cleared();    // don't clear the screen to avoid flicker
        return FAIL;
     }
 
diff --git a/src/version.c b/src/version.c
index ca86462ff..0c801dd2e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    228,
 /**/
     227,
 /**/

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