Fix the generation of the feed

src/model.ml

@@ -91,10 +91,19 @@ module Article = struct
   let date { date; _ } = date
   let tags { tags; _ } = tags
 
+  let escape_string str =
+    let renderer = Cmarkit_renderer.make () in
+    let buffer = Buffer.create (String.length str) in
+    let ctx = Cmarkit_renderer.Context.make renderer buffer in
+    Cmarkit_html.html_escaped_string ctx str;
+    Buffer.contents buffer
+
   let to_rss_item url article =
+    let title = escape_string article.article_title in
+    let description = escape_string article.article_description in
     Rss.(
-      Item.make ~title:article.article_title ~link:url ~pub_date:article.date
-        ~description:article.article_description ~guid:(Guid.link url) ())
+      Item.make ~title ~link:url ~pub_date:article.date ~description
+        ~guid:(Guid.link url) ())
 
   let make article_title article_description tags date title description author
       co_authors =