Enable smart-punctuation by default

This enables the smart-punctuation setting by default. The long term
plan is to continue to enable more markdown extensions by default across
semver breaking releases.

crates/mdbook-core/src/config.rs

@@ -417,7 +417,7 @@ pub enum RustEdition {
 }
 
 /// Configuration for the HTML renderer.
-#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 #[serde(default, rename_all = "kebab-case", deny_unknown_fields)]
 #[non_exhaustive]
 pub struct HtmlConfig {
@@ -485,6 +485,35 @@ pub struct HtmlConfig {
     pub hash_files: bool,
 }
 
+impl Default for HtmlConfig {
+    fn default() -> HtmlConfig {
+        HtmlConfig {
+            theme: None,
+            default_theme: None,
+            preferred_dark_theme: None,
+            smart_punctuation: true,
+            mathjax_support: false,
+            additional_css: Vec::new(),
+            additional_js: Vec::new(),
+            fold: Fold::default(),
+            playground: Playground::default(),
+            code: Code::default(),
+            print: Print::default(),
+            no_section_label: false,
+            search: None,
+            git_repository_url: None,
+            git_repository_icon: None,
+            input_404: None,
+            site_url: None,
+            cname: None,
+            edit_url_template: None,
+            live_reload_endpoint: None,
+            redirect: HashMap::new(),
+            hash_files: false,
+        }
+    }
+}
+
 impl HtmlConfig {
     /// Returns the directory of theme from the provided root directory. If the
     /// directory is not present it will append the default directory of "theme"

crates/mdbook-markdown/src/lib.rs

@@ -23,16 +23,25 @@ pub use pulldown_cmark;
 mod tests;
 
 /// Options for parsing markdown.
-#[derive(Default)]
 #[non_exhaustive]
 pub struct MarkdownOptions {
     /// Enables smart punctuation.
     ///
     /// Converts quotes to curly quotes, `...` to `…`, `--` to en-dash, and
     /// `---` to em-dash.
+    ///
+    /// This is `true` by default.
     pub smart_punctuation: bool,
 }
 
+impl Default for MarkdownOptions {
+    fn default() -> MarkdownOptions {
+        MarkdownOptions {
+            smart_punctuation: true,
+        }
+    }
+}
+
 /// Options for converting markdown to HTML.
 #[non_exhaustive]
 pub struct HtmlRenderOptions<'a> {

crates/mdbook-markdown/src/tests.rs

@@ -61,7 +61,8 @@ fn it_can_wrap_tables() {
 
 #[test]
 fn it_can_keep_quotes_straight() {
-    let options = HtmlRenderOptions::new(&Path::new(""));
+    let mut options = HtmlRenderOptions::new(&Path::new(""));
+    options.markdown_options.smart_punctuation = false;
     assert_eq!(render_markdown("'one'", &options), "<p>'one'</p>\n");
 }
 
@@ -78,8 +79,7 @@ fn it_can_make_quotes_curly_except_when_they_are_in_code() {
 </code></pre>
 <p><code>'three'</code> ‘four’</p>
 "#;
-    let mut options = HtmlRenderOptions::new(&Path::new(""));
-    options.markdown_options.smart_punctuation = true;
+    let options = HtmlRenderOptions::new(&Path::new(""));
     assert_eq!(render_markdown(input, &options), expected);
 }
 
@@ -102,9 +102,7 @@ more text with spaces
 </code></pre>
 <p>more text with spaces</p>
 "#;
-    let mut options = HtmlRenderOptions::new(&Path::new(""));
-    assert_eq!(render_markdown(input, &options), expected);
-    options.markdown_options.smart_punctuation = true;
+    let options = HtmlRenderOptions::new(&Path::new(""));
     assert_eq!(render_markdown(input, &options), expected);
 }
 
@@ -117,9 +115,7 @@ fn rust_code_block_properties_are_passed_as_space_delimited_class() {
 
     let expected = r#"<pre><code class="language-rust,no_run,should_panic,property_3"></code></pre>
 "#;
-    let mut options = HtmlRenderOptions::new(&Path::new(""));
-    assert_eq!(render_markdown(input, &options), expected);
-    options.markdown_options.smart_punctuation = true;
+    let options = HtmlRenderOptions::new(&Path::new(""));
     assert_eq!(render_markdown(input, &options), expected);
 }
 
@@ -132,9 +128,7 @@ fn rust_code_block_properties_with_whitespace_are_passed_as_space_delimited_clas
 
     let expected = r#"<pre><code class="language-rust,,,,,no_run,,,should_panic,,,,property_3"></code></pre>
 "#;
-    let mut options = HtmlRenderOptions::new(&Path::new(""));
-    assert_eq!(render_markdown(input, &options), expected);
-    options.markdown_options.smart_punctuation = true;
+    let options = HtmlRenderOptions::new(&Path::new(""));
     assert_eq!(render_markdown(input, &options), expected);
 }
 
@@ -147,17 +141,13 @@ fn rust_code_block_without_properties_has_proper_html_class() {
 
     let expected = r#"<pre><code class="language-rust"></code></pre>
 "#;
-    let mut options = HtmlRenderOptions::new(&Path::new(""));
-    assert_eq!(render_markdown(input, &options), expected);
-    options.markdown_options.smart_punctuation = true;
+    let options = HtmlRenderOptions::new(&Path::new(""));
     assert_eq!(render_markdown(input, &options), expected);
 
     let input = r#"
 ```rust
 ```
 "#;
-    let mut options = HtmlRenderOptions::new(&Path::new(""));
-    assert_eq!(render_markdown(input, &options), expected);
-    options.markdown_options.smart_punctuation = true;
+    let options = HtmlRenderOptions::new(&Path::new(""));
     assert_eq!(render_markdown(input, &options), expected);
 }

guide/src/format/configuration/renderers.md

@@ -123,7 +123,7 @@ The following configuration options are available:
   CSS media query. Defaults to `navy`.
 - **smart-punctuation:** Converts quotes to curly quotes, `...` to `…`, `--` to en-dash, and `---` to em-dash.
   See [Smart Punctuation](../markdown.md#smart-punctuation).
-  Defaults to `false`.
+  Defaults to `true`.
 - **mathjax-support:** Adds support for [MathJax](../mathjax.md). Defaults to
   `false`.
 - **additional-css:** If you need to slightly change the appearance of your book

guide/src/format/markdown.md

@@ -220,8 +220,8 @@ characters:
 
 So, no need to manually enter those Unicode characters!
 
-This feature is disabled by default.
-To enable it, see the [`output.html.smart-punctuation`] config option.
+This feature is enabled by default.
+To disable it, see the [`output.html.smart-punctuation`] config option.
 
 [strikethrough]: https://github.github.com/gfm/#strikethrough-extension-
 [tables]: https://github.github.com/gfm/#tables-extension-

tests/testsuite/markdown.rs

@@ -90,23 +90,7 @@ Carrots</li>
 #[test]
 fn smart_punctuation() {
     BookTest::from_dir("markdown/smart_punctuation")
-        // Default is off.
-        .check_main_file(
-            "book/smart_punctuation.html",
-            str![[r##"
-<h1 id="smart-punctuation"><a class="header" href="#smart-punctuation">Smart Punctuation</a></h1>
-<ul>
-<li>En dash: --</li>
-<li>Em dash: ---</li>
-<li>Ellipsis: ...</li>
-<li>Double quote: "quote"</li>
-<li>Single quote: 'quote'</li>
-</ul>
-"##]],
-        )
-        .run("build", |cmd| {
-            cmd.env("MDBOOK_OUTPUT__HTML__SMART_PUNCTUATION", "true");
-        })
+        // Default is on.
         .check_main_file(
             "book/smart_punctuation.html",
             str![[r##"
@@ -118,6 +102,22 @@ fn smart_punctuation() {
 <li>Double quote: “quote”</li>
 <li>Single quote: ‘quote’</li>
 </ul>
+"##]],
+        )
+        .run("build", |cmd| {
+            cmd.env("MDBOOK_OUTPUT__HTML__SMART_PUNCTUATION", "false");
+        })
+        .check_main_file(
+            "book/smart_punctuation.html",
+            str![[r##"
+<h1 id="smart-punctuation"><a class="header" href="#smart-punctuation">Smart Punctuation</a></h1>
+<ul>
+<li>En dash: --</li>
+<li>Em dash: ---</li>
+<li>Ellipsis: ...</li>
+<li>Double quote: "quote"</li>
+<li>Single quote: 'quote'</li>
+</ul>
 "##]],
         );
 }

tests/testsuite/search.rs

@@ -63,7 +63,7 @@ fn reasonable_search_index() {
     // html.
     assert_eq!(
         docs[&sneaky]["body"],
-        "I put <HTML> in here! Sneaky inline event alert(\"inline\");. But regular inline is indexed."
+        "I put <HTML> in here! Sneaky inline event alert(“inline”);. But regular inline is indexed."
     );
     assert_eq!(
         docs[&no_headers]["breadcrumbs"],