From c8148d2d75cc502efffb323cc97ea1e1be6158e3 Mon Sep 17 00:00:00 2001
From: Mika Vilpas <mika.vilpas@gmail.com>
Date: Tue, 17 Jun 2025 03:29:46 +0300
Subject: [PATCH] fix: out-of-bounds error with empty backstack (#2887)

---
 yazi-core/src/tab/backstack.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/yazi-core/src/tab/backstack.rs b/yazi-core/src/tab/backstack.rs
index bb9ffd5e..4bd8afa6 100644
--- a/yazi-core/src/tab/backstack.rs
+++ b/yazi-core/src/tab/backstack.rs
@@ -41,7 +41,7 @@ impl<T: Eq + Clone> Backstack<T> {
 	}
 
 	pub fn shift_forward(&mut self) -> Option<&T> {
-		if self.cursor + 1 == self.stack.len() {
+		if self.cursor + 1 >= self.stack.len() {
 			None
 		} else {
 			self.cursor += 1;
@@ -56,7 +56,9 @@ mod tests {
 
 	#[test]
 	fn test_backstack() {
-		let mut bs = Backstack::default();
+		let mut bs: Backstack<u32> = Backstack::default();
+		assert_eq!(bs.shift_forward(), None);
+
 		bs.push(&1);
 		assert_eq!(bs.stack[bs.cursor], 1);