From 9438232717dd6ceaf847fba4026bba6510b8768c Mon Sep 17 00:00:00 2001
From: ChEnylnti <67730442+ChEnylnti@users.noreply.github.com>
Date: Thu, 18 Jun 2026 14:52:16 +0800
Subject: [PATCH] fix(parser): escape raw less-than characters

---
 lua/leetcode-plugins/cn/normalizer.lua | 1 +
 lua/leetcode/parser/normalizer.lua     | 1 +
 2 files changed, 2 insertions(+)

diff --git a/lua/leetcode-plugins/cn/normalizer.lua b/lua/leetcode-plugins/cn/normalizer.lua
index 9881a22a..5f66d323 100644
--- a/lua/leetcode-plugins/cn/normalizer.lua
+++ b/lua/leetcode-plugins/cn/normalizer.lua
@@ -9,6 +9,7 @@ function Normalizer:cleanup()
         :gsub("<br%s*/>", "\n")
         :gsub("<meta[^>]*/>", "")
         :gsub("&nbsp;", " ")
+        :gsub("<([^/%a!])", "&lt;%1")
         :gsub("<(/?)b>", "<%1strong>")
         :gsub(":", "：")
 end
diff --git a/lua/leetcode/parser/normalizer.lua b/lua/leetcode/parser/normalizer.lua
index e3c24ca1..7e2783c1 100644
--- a/lua/leetcode/parser/normalizer.lua
+++ b/lua/leetcode/parser/normalizer.lua
@@ -14,6 +14,7 @@ function Normalizer:cleanup() --
         :gsub("<br%s*/>", "\n")
         :gsub("<meta[^>]*/>", "")
         :gsub("&nbsp;", " ")
+        :gsub("<([^/%a!])", "&lt;%1")
         -- :gsub("<(/?)b([^>]*)>", "<%1strong%2>")
         :gsub("<(/?)b>", "<%1strong>")
     -- :gsub("&#?%w+;", function(e) --