From 5d760b4cdf83ee071870c59ce2350995b35cb25e Mon Sep 17 00:00:00 2001
From: Gregory Marco <greg@nanoyagi.com>
Date: Sat, 30 Aug 2025 23:07:22 -0500
Subject: [PATCH] Allow parsing toml metadata out of specially delimited
 comments.

---
 src/lib.rs | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 1fb9128..1360b2c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -373,7 +373,7 @@ pub struct PageRenderer {
 fn parse_markdown (content: &str, metadata: &mut Table) -> String {
     let mut metadata_str = String::new();
     let mut in_metadata = false;
-    let parser = pulldown_cmark::Parser::new_ext(content, pulldown_cmark::Options::ENABLE_YAML_STYLE_METADATA_BLOCKS).map(|event| {
+    let parser = pulldown_cmark::Parser::new_ext(content, pulldown_cmark::Options::ENABLE_YAML_STYLE_METADATA_BLOCKS).filter(|event| {
         match &event {
             Event::Start(tag) => {
                 if let Tag::MetadataBlock(_) = tag {
@@ -385,24 +385,33 @@ fn parse_markdown (content: &str, metadata: &mut Table) -> String {
                     metadata_str.push_str(text);
                 }
             }
+            Event::Html(html) => {
+                if html.starts_with("<!---") {
+                    in_metadata = true;
+                } else if html.starts_with("--->") {
+                    in_metadata = false;
+                    return false;
+                } else if in_metadata {
+                    metadata_str.push_str(html);
+                }
+            }
             Event::End(tag) => {
-                if let TagEnd::MetadataBlock(_) = tag {
-                    if in_metadata {
-                        if let Ok(parsed_metadata) = toml::de::from_str::<Table>(&metadata_str) {
-                            println!("{:?}", parsed_metadata);
-                            for (key, value) in parsed_metadata {
-                                metadata.insert(key, value);
-                            }
+                if !metadata_str.is_empty() {
+                    if let Ok(parsed_metadata) = toml::de::from_str::<Table>(&metadata_str) {
+                        println!("{:?}", parsed_metadata);
+                        for (key, value) in parsed_metadata {
+                            metadata.insert(key, value);
                         }
                     }
 
                     metadata_str.clear();
                     in_metadata = false;
-                }                
+                    return false;
+                }
             }
             _ => {}
         }
-        event
+        !in_metadata
     });
     let mut html_output = String::new();
     pulldown_cmark::html::push_html(&mut html_output, parser);