fix some routines going only to children instead of all descendants

src/utils/markdown.rs

@@ -351,7 +351,8 @@ pub fn read_md(
 
 /// Check whether mermaid diagrams are in the AST
 fn check_mermaid<'a>(root: &'a AstNode<'a>, mermaid_str: &str) -> bool {
-    root.children().any(|node| match &node.data.borrow().value {
+    root.descendants()
+        .any(|node| match &node.data.borrow().value {
             // Check if code of block define a mermaid diagram
             NodeValue::CodeBlock(code_block) => code_block.info == mermaid_str,
             _ => false,
@@ -360,12 +361,8 @@ fn check_mermaid<'a>(root: &'a AstNode<'a>, mermaid_str: &str) -> bool {
 
 /// Check if code is in the AST
 fn check_code<'a>(root: &'a AstNode<'a>, blacklist: &[String]) -> bool {
-    root.children().any(|node| match &node.data.borrow().value {
-        // Detect code in paragraph
-        /* NodeValue::Paragraph => match &node.children().next() {
-            Some(child) => matches!(child.data.borrow().value, NodeValue::Code(_)),
-            None => false,
-        }, */
+    root.descendants()
+        .any(|node| match &node.data.borrow().value {
             // Detect blocks of code where the lang isn't in the blacklist
             NodeValue::CodeBlock(code_block) => !blacklist.contains(&code_block.info),
             _ => false,
@@ -394,7 +391,7 @@ fn check_math(html: &str) -> bool {
 
 /// Change class of languages for hljs detection
 fn hljs_replace<'a>(root: &'a AstNode<'a>, mermaid_str: &str) {
-    root.children().for_each(|node| {
+    root.descendants().for_each(|node| {
         if let NodeValue::CodeBlock(ref mut block) = &mut node.data.borrow_mut().value {
             if block.info != mermaid_str {
                 block.info = format!("hljs-{}", block.info);