From 26ac1795484f1a8242c180919da95d6cf841da7c Mon Sep 17 00:00:00 2001
From: cyqsimon <28627918+cyqsimon@users.noreply.github.com>
Date: Mon, 26 Feb 2024 11:31:30 +0800
Subject: [PATCH] Add note on thread synchronization

---
 src/syntax_mapping.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/syntax_mapping.rs b/src/syntax_mapping.rs
index 7c96c513..a149f9bb 100644
--- a/src/syntax_mapping.rs
+++ b/src/syntax_mapping.rs
@@ -89,6 +89,11 @@ impl<'a> SyntaxMapping<'a> {
                 Lazy::force(matcher);
             }
         });
+        // Note that this thread is not joined upon completion because there's
+        // no shared resources that need synchronization to be safely dropped.
+        // If we later add code into this thread that requires interesting
+        // resources (e.g. IO), it would be a good idea to store the handle
+        // and join it on drop.
     }
 
     pub fn insert(&mut self, from: &str, to: MappingTarget<'a>) -> Result<()> {