From d9cd493d093f14b934343a2e57998c86fbca2ef7 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Thu, 4 Jun 2020 21:41:31 +0000
Subject: [PATCH] Reset wrapped flag when clearing or moving lines, GitHub
 issue 2215.

---
 grid.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/grid.c b/grid.c
index 2e3f50b9..0c837748 100644
--- a/grid.c
+++ b/grid.c
@@ -649,6 +649,8 @@ grid_clear_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
 		grid_free_line(gd, yy);
 		grid_empty_line(gd, yy, bg);
 	}
+	if (py != 0)
+		gd->linedata[py - 1].flags &= ~GRID_LINE_WRAPPED;
 }
 
 /* Move a group of lines. */
@@ -675,6 +677,8 @@ grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
 			continue;
 		grid_free_line(gd, yy);
 	}
+	if (dy != 0)
+		gd->linedata[dy - 1].flags &= ~GRID_LINE_WRAPPED;
 
 	memmove(&gd->linedata[dy], &gd->linedata[py],
 	    ny * (sizeof *gd->linedata));
@@ -687,8 +691,11 @@ grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
 		if (yy < dy || yy >= dy + ny)
 			grid_empty_line(gd, yy, bg);
 	}
+	if (py != 0 && (py < dy || py >= dy + ny))
+		gd->linedata[py - 1].flags &= ~GRID_LINE_WRAPPED;
 }
 
+
 /* Move a group of cells. */
 void
 grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx,