From 1b67fae9f4eabf0899dda441971b8a338cb45a15 Mon Sep 17 00:00:00 2001
From: Rowan Herbert <rlherbert.dev@gmail.com>
Date: Wed, 2 Jun 2021 16:30:40 -0700
Subject: [PATCH] Fix panic when buffer larger than terminal width
---
helix-view/src/view.rs | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/helix-view/src/view.rs b/helix-view/src/view.rs
index f82de90e..b7bfaa17 100644
--- a/helix-view/src/view.rs
+++ b/helix-view/src/view.rs
@@ -143,8 +143,9 @@ impl View {
}
}
- let row = line - self.first_line as usize;
- let col = col - self.first_col as usize;
+ // It is possible for underflow to occur if the buffer length is larger than the terminal width.
+ let row = line.saturating_sub(self.first_line);
+ let col = col.saturating_sub(self.first_col);
Some(Position::new(row, col))
}