From ac3c1719c968cdad7b17a7a8a115bc722928bbb9 Mon Sep 17 00:00:00 2001
From: Cor Peters <luctius@users.noreply.github.com>
Date: Mon, 16 Aug 2021 12:18:23 +0200
Subject: [PATCH] Fixes crash on empty rust file. (#592)

Fixes #591

Co-authored-by: Cor Peters <luctius@gmail.com>
---
 helix-core/src/match_brackets.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/helix-core/src/match_brackets.rs b/helix-core/src/match_brackets.rs
index f3d9e845e..a4b2fb9c8 100644
--- a/helix-core/src/match_brackets.rs
+++ b/helix-core/src/match_brackets.rs
@@ -26,7 +26,7 @@ pub fn find(syntax: &Syntax, doc: &Rope, pos: usize) -> Option<usize> {
 
     let len = doc.len_bytes();
     let start_byte = node.start_byte();
-    let end_byte = node.end_byte() - 1; // it's end exclusive
+    let end_byte = node.end_byte().saturating_sub(1); // it's end exclusive
     if start_byte >= len || end_byte >= len {
         return None;
     }