From c784c9e9b36bc1774eba4b0d89a3ce7f137805bd Mon Sep 17 00:00:00 2001
From: Stephan Dilly <dilly.stephan@gmail.com>
Date: Tue, 30 Jun 2020 09:49:27 +0200
Subject: [PATCH] safety first

---
 src/components/filetree.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/filetree.rs b/src/components/filetree.rs
index ff9efb64..1f46f906 100644
--- a/src/components/filetree.rs
+++ b/src/components/filetree.rs
@@ -253,7 +253,7 @@ impl DrawableComponent for FileTreeComponent {
         let select = self
             .tree
             .selection
-            .map(|idx| idx - selection_offset)
+            .map(|idx| idx.saturating_sub(selection_offset))
             .unwrap_or_default();
         let tree_height = r.height.saturating_sub(2) as usize;