From 89848ad7793ea4ed0c07ec19ea847db6dec6cc33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=89=E5=92=B2=E9=9B=85=20=C2=B7=20Misaki=20Masa?=
 <sxyazi@gmail.com>
Date: Tue, 16 Jan 2024 08:16:45 +0800
Subject: [PATCH] fix: renaming may cause a crash when encountering Unicode
 characters (#519)

---
 yazi-core/src/manager/commands/rename.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/yazi-core/src/manager/commands/rename.rs b/yazi-core/src/manager/commands/rename.rs
index fd517127..41ede85a 100644
--- a/yazi-core/src/manager/commands/rename.rs
+++ b/yazi-core/src/manager/commands/rename.rs
@@ -64,7 +64,12 @@ impl Manager {
 		let name = Self::empty_url_part(&hovered, opt.empty);
 		let cursor = match opt.cursor {
 			"start" => Some(0),
-			"before_ext" => name.rfind('.').filter(|&n| n != 0),
+			"before_ext" => name
+				.chars()
+				.rev()
+				.position(|c| c == '.')
+				.map(|i| name.chars().count() - i - 1)
+				.filter(|&i| i != 0),
 			_ => None,
 		};