From f6589121da72b02c2aea12fedc098e597cae5e8e Mon Sep 17 00:00:00 2001
From: xfy <i@rua.plus>
Date: Fri, 12 Jun 2026 10:36:06 +0800
Subject: [PATCH] perf(markdown): eliminate duplicate clean_html call in
 generate_toc_html

clean_html() triggers expensive ammonia sanitization with aho_corasick.
Previously called twice for the same text (aria-label + display text).
Now calls once and reuses the result.
---
 src/api/markdown.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/api/markdown.rs b/src/api/markdown.rs
index b20c7c2..2ff53c3 100644
--- a/src/api/markdown.rs
+++ b/src/api/markdown.rs
@@ -228,11 +228,12 @@ fn generate_toc_html(headings: &[(u8, String, String)]) -> String {
             }
         }
 
+        let clean_text = clean_html(text);
         html.push_str(&format!(
             "<li><a href=\"#{}\" aria-label=\"{}\">{}</a>",
             id,
-            clean_html(text),
-            clean_html(text)
+            clean_text,
+            clean_text
         ));
     }