Handle inline math

Author: frankharkins

__test__/index.spec.ts

@@ -175,6 +175,16 @@ test('extractAnchors: code in headings', (t) => {
   t.deepEqual(extractAnchors('# My `heading`'), ['#my-heading'])
 })
 
+test('extractAnchors: math in headings', (t) => {
+  t.deepEqual(extractAnchors('## Gates $\\rightarrow$ quantum gates'), ['#gates-rightarrow-quantum-gates'])
+  t.deepEqual(
+    extractAnchors(
+      '### Template circuits for calculating matrix elements of $\\tilde{S}$ and $\\tilde{H}$ via Hadamard test',
+    ),
+    ['#template-circuits-for-calculating-matrix-elements-of-tildes-and-tildeh-via-hadamard-test'],
+  )
+})
+
 test('extractAnchors: mdx in headings', (t) => {
   t.deepEqual(extractAnchors('# My <B>heading</B>`'), ['#my-heading'])
 })

src/anchors/mod.rs

@@ -63,6 +63,7 @@ pub fn get_text<'a>(node: &'a Node, s: &mut String) {
   let maybe_text = match node {
     Node::Text(text) => Some(&text.value),
     Node::InlineCode(text) => Some(&text.value),
+    Node::InlineMath(text) => Some(&text.value),
     _ => None,
   };
   if let Some(text) = maybe_text {
@@ -95,6 +96,8 @@ fn heading_to_anchor(heading: String) -> String {
       ')' => None,
       '"' => None,
       '\'' => None,
+      '{' => None,
+      '}' => None,
       x => Some(x),
     })
     .collect()