Support strikethrough and tasklists. (#952)

src/renderer/html_handlebars/search.rs

@@ -81,10 +81,7 @@ fn render_item(
         .chain_err(|| "Could not convert HTML path to str")?;
     let anchor_base = utils::fs::normalize_path(filepath);
 
-    let mut opts = Options::empty();
-    opts.insert(Options::ENABLE_TABLES);
-    opts.insert(Options::ENABLE_FOOTNOTES);
-    let p = Parser::new_ext(&chapter.content, opts);
+    let p = utils::new_cmark_parser(&chapter.content);
 
     let mut in_header = false;
     let max_section_depth = i32::from(search_config.heading_split_level);

src/utils/mod.rs

@@ -111,14 +111,18 @@ pub fn render_markdown(text: &str, curly_quotes: bool) -> String {
     render_markdown_with_base(text, curly_quotes, "")
 }
 
-pub fn render_markdown_with_base(text: &str, curly_quotes: bool, base: &str) -> String {
-    let mut s = String::with_capacity(text.len() * 3 / 2);
-
+pub fn new_cmark_parser(text: &str) -> Parser<'_> {
     let mut opts = Options::empty();
     opts.insert(Options::ENABLE_TABLES);
     opts.insert(Options::ENABLE_FOOTNOTES);
+    opts.insert(Options::ENABLE_STRIKETHROUGH);
+    opts.insert(Options::ENABLE_TASKLISTS);
+    Parser::new_ext(text, opts)
+}
 
-    let p = Parser::new_ext(text, opts);
+pub fn render_markdown_with_base(text: &str, curly_quotes: bool, base: &str) -> String {
+    let mut s = String::with_capacity(text.len() * 3 / 2);
+    let p = new_cmark_parser(text);
     let mut converter = EventQuoteConverter::new(curly_quotes);
     let events = p
         .map(clean_codeblock_headers)

tests/dummy_book/src/SUMMARY.md

@@ -7,6 +7,7 @@
     - [Nested Chapter](first/nested.md)
     - [Includes](first/includes.md)
     - [Recursive](first/recursive.md)
+    - [Markdown](first/markdown.md)
 - [Second Chapter](second.md)
     - [Nested Chapter](second/nested.md)
 

tests/dummy_book/src/first/markdown.md

@@ -0,0 +1,29 @@
+# Markdown tests
+
+Tests for some markdown output.
+
+## Tables
+
+| foo | bar |
+| --- | --- |
+| baz | bim |
+
+## Footnotes
+
+Footnote example[^1], or with a word[^word].
+
+[^1]: This is a footnote.
+
+[^word]: A longer footnote.
+    With multiple lines.
+    Third line.
+
+## Strikethrough
+
+~~strikethrough example~~
+
+## Tasklisks
+
+- [X] Apples
+- [X] Broccoli
+- [ ] Carrots

tests/rendered_output.rs

@@ -29,8 +29,9 @@ const TOC_TOP_LEVEL: &[&str] = &[
 const TOC_SECOND_LEVEL: &[&str] = &[
     "1.1. Nested Chapter",
     "1.2. Includes",
-    "2.1. Nested Chapter",
     "1.3. Recursive",
+    "1.4. Markdown",
+    "2.1. Nested Chapter",
 ];
 
 /// Make sure you can load the dummy book and build it without panicking.
@@ -431,6 +432,39 @@ fn no_index_for_print_html() {
     assert_doesnt_contain_strings(index_html, &[r##"noindex"##]);
 }
 
+#[test]
+fn markdown_options() {
+    let temp = DummyBook::new().build().unwrap();
+    let md = MDBook::load(temp.path()).unwrap();
+    md.build().unwrap();
+
+    let path = temp.path().join("book/first/markdown.html");
+    assert_contains_strings(
+        &path,
+        &[
+            "<th>foo</th>",
+            "<th>bar</th>",
+            "<td>baz</td>",
+            "<td>bim</td>",
+        ],
+    );
+    assert_contains_strings(&path, &[
+        r##"<sup class="footnote-reference"><a href="#1">1</a></sup>"##,
+        r##"<sup class="footnote-reference"><a href="#word">2</a></sup>"##,
+        r##"<div class="footnote-definition" id="1"><sup class="footnote-definition-label">1</sup>"##,
+        r##"<div class="footnote-definition" id="word"><sup class="footnote-definition-label">2</sup>"##,
+    ]);
+    assert_contains_strings(&path, &["<del>strikethrough example</del>"]);
+    assert_contains_strings(
+        &path,
+        &[
+            "<li><input disabled=\"\" type=\"checkbox\" checked=\"\"/>\nApples",
+            "<li><input disabled=\"\" type=\"checkbox\" checked=\"\"/>\nBroccoli",
+            "<li><input disabled=\"\" type=\"checkbox\"/>\nCarrots",
+        ],
+    );
+}
+
 #[cfg(feature = "search")]
 mod search {
     use crate::dummy_book::DummyBook;
@@ -477,7 +511,7 @@ mod search {
         assert_eq!(docs[&some_section]["body"], "");
         assert_eq!(
             docs[&summary]["body"],
-            "Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Second Chapter Nested Chapter Conclusion"
+            "Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Markdown Second Chapter Nested Chapter Conclusion"
         );
         assert_eq!(docs[&summary]["breadcrumbs"], "First Chapter » Summary");
         assert_eq!(docs[&conclusion]["body"], "I put &lt;HTML&gt; in here!");