fix: thematic break metadata-block

src/markdown/mod.rs

@@ -339,7 +339,10 @@ pub(crate) fn parse_markdown_with_width(
 
     let normalized = normalize_code_fences(src);
     let line_starts = compute_line_starts(&normalized);
-    for (ev, range) in Parser::new_ext(&normalized, Options::all()).into_offset_iter() {
+    let parser_options = Options::all()
+        - Options::ENABLE_YAML_STYLE_METADATA_BLOCKS
+        - Options::ENABLE_PLUSES_DELIMITED_METADATA_BLOCKS;
+    for (ev, range) in Parser::new_ext(&normalized, parser_options).into_offset_iter() {
         state.truncate(lines.len());
         let before = lines.len();
         let raw_line = byte_to_line(&line_starts, range.start);

src/tests/markdown_blocks.rs

@@ -109,6 +109,28 @@ fn rules_use_render_width_without_extra_blank_after() {
     assert_eq!(rendered[rule_idx + 1], "Beta");
 }
 
+#[test]
+fn body_dashes_are_thematic_breaks_not_metadata_block() {
+    let (ss, theme) = test_assets();
+    let src = "# Title\n\n---\n### SSL\n\n- item 1\n- item 2\n\n---\n### TLS\nend\n";
+    let (lines, _, _, _) =
+        parse_markdown_with_width(src, &ss, &theme, 40, &test_md_theme(), false, true).into();
+    let rendered = rendered_non_empty_lines(&lines);
+
+    let rule_count = rendered
+        .iter()
+        .filter(|line| line.trim_start().starts_with('─'))
+        .count();
+    assert!(
+        rule_count >= 2,
+        "expected two thematic breaks, got {rule_count}"
+    );
+    assert!(rendered.iter().any(|line| line.contains("SSL")));
+    assert!(rendered.iter().any(|line| line.contains("item 1")));
+    assert!(rendered.iter().any(|line| line.contains("item 2")));
+    assert!(rendered.iter().any(|line| line.contains("TLS")));
+}
+
 #[test]
 fn source_line_map_plain_document_is_aligned_with_first_event() {
     let (ss, theme) = test_assets();