From a7e6f1a07040c150ac69bed24b8e9841425d4c95 Mon Sep 17 00:00:00 2001
From: Qwerasd <qwerasd205@users.noreply.github.com>
Date: Mon, 24 Jun 2024 20:09:37 -0400
Subject: [PATCH] fix(terminal/PageList): clear cells in truncated rows during
 clone

Previously this was a memory leak, styles and graphemes in these rows
were never reclaimed.
---
 src/terminal/PageList.zig | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/terminal/PageList.zig b/src/terminal/PageList.zig
index 4d1ac5d2c..523ca3897 100644
--- a/src/terminal/PageList.zig
+++ b/src/terminal/PageList.zig
@@ -490,6 +490,12 @@ pub fn clone(
             src.* = old_dst;
             dirty.setValue(i, dirty.isSet(i + chunk.start));
         }
+
+        // We need to clear the rows we're about to truncate.
+        for (len..page.data.size.rows) |i| {
+            page.data.clearCells(&rows[i], 0, page.data.size.cols);
+        }
+
         page.data.size.rows = @intCast(len);
         total_rows += len;