fix double code escape

Author: dbushell

src/inline-plugins/code.ts

@@ -1,14 +1,17 @@
 import type { InlinePlugin } from "../types.ts";
-import { escape } from "@dbushell/hyperless";
+import { escape, unescape } from "@dbushell/hyperless";
 
 const REGEXP = /`([^`]+)`/g;
 
 const plugin: InlinePlugin = {
   type: "code",
   prerender: (text: string) => {
-    if (text.includes("`") === false) return text;
+    if (text.indexOf("`") === -1) return text;
     // Inline code is escaped early to avoid `<div>` being parsed as HTML node
-    return text.replace(REGEXP, (...match) => escape(match[0]));
+    return text.replace(REGEXP, (...match) => {
+      const text = unescape(match[0]);
+      return escape(text);
+    });
   },
   render: (text: string) => {
     text = text.replace(REGEXP, (...match) => `<code>${match[1]}</code>`);

test/code_test.ts

@@ -25,3 +25,8 @@ Deno.test("code (anchor inception)", async () => {
     "<p><code>This [emoji] 🍋‍🟩 is a [lime](https://emojipedia.org/lime) ok?</code></p>",
   );
 });
+
+Deno.test("code (html)", async () => {
+  const html = await hmmarkdown("<div>`</div>`</div>");
+  assertEquals(html, "<div><p><code>&lt;/div&gt;</code></p></div>");
+});