Merge pull request #690 from mattico/rustfmt

Remove rustfmt.toml

build.rs

@@ -24,7 +24,6 @@ mod execs {
     }
 }
 
-
 error_chain!{
  foreign_links {
         Io(std::io::Error);
@@ -32,23 +31,25 @@ error_chain!{
 }
 
 fn program_exists(program: &str) -> Result<()> {
-    execs::cmd(program).arg("-v")
+    execs::cmd(program)
+        .arg("-v")
         .output()
         .chain_err(|| format!("Please install '{}'!", program))?;
     Ok(())
 }
 
 fn npm_package_exists(package: &str) -> Result<()> {
-    let status = execs::cmd("npm").args(&["list", "-g"])
+    let status = execs::cmd("npm")
+        .args(&["list", "-g"])
         .arg(package)
         .output();
 
     match status {
         Ok(ref out) if out.status.success() => Ok(()),
-        _ => {
+        _ => bail!(
-            bail!("Missing npm package '{0}' install with: 'npm -g install {0}'",
+            "Missing npm package '{0}' install with: 'npm -g install {0}'",
-                  package)
+            package
-        }
+        ),
     }
 }
 
@@ -81,7 +82,8 @@ fn run() -> Result<()> {
         let theme_dir = Path::new(&manifest_dir).join("src/theme/");
         let stylus_dir = theme_dir.join("stylus/book.styl");
 
-        if !execs::cmd("stylus").arg(stylus_dir)
+        if !execs::cmd("stylus")
+            .arg(stylus_dir)
             .arg("--out")
             .arg(theme_dir)
             .arg("--use")

examples/de-emphasize.rs

@@ -3,15 +3,15 @@ extern crate mdbook;
 extern crate pulldown_cmark;
 extern crate pulldown_cmark_to_cmark;
 
-use mdbook::errors::{Error, Result};
-use mdbook::MDBook;
 use mdbook::book::{Book, BookItem, Chapter};
+use mdbook::errors::{Error, Result};
 use mdbook::preprocess::{Preprocessor, PreprocessorContext};
+use mdbook::MDBook;
 use pulldown_cmark::{Event, Parser, Tag};
 use pulldown_cmark_to_cmark::fmt::cmark;
 
-use std::ffi::OsString;
 use std::env::{args, args_os};
+use std::ffi::OsString;
 use std::process;
 
 struct Deemphasize;

rustfmt.toml

@@ -1 +0,0 @@
-format_strings = true

src/bin/build.rs

@@ -1,7 +1,7 @@
-use std::path::PathBuf;
 use clap::{App, ArgMatches, SubCommand};
-use mdbook::MDBook;
 use mdbook::errors::Result;
+use mdbook::MDBook;
+use std::path::PathBuf;
 use {get_book_dir, open};
 
 // Create clap subcommand arguments

src/bin/clean.rs

@@ -1,9 +1,9 @@
+use clap::{App, ArgMatches, SubCommand};
+use get_book_dir;
+use mdbook::errors::*;
+use mdbook::MDBook;
 use std::fs;
 use std::path::PathBuf;
-use clap::{App, ArgMatches, SubCommand};
-use mdbook::MDBook;
-use mdbook::errors::*;
-use get_book_dir;
 
 // Create clap subcommand arguments
 pub fn make_subcommand<'a, 'b>() -> App<'a, 'b> {

src/bin/init.rs

@@ -1,11 +1,11 @@
+use clap::{App, ArgMatches, SubCommand};
+use get_book_dir;
+use mdbook::config;
+use mdbook::errors::Result;
+use mdbook::MDBook;
 use std::io;
 use std::io::Write;
 use std::process::Command;
-use clap::{App, ArgMatches, SubCommand};
-use mdbook::MDBook;
-use mdbook::errors::Result;
-use mdbook::config;
-use get_book_dir;
 
 // Create clap subcommand arguments
 pub fn make_subcommand<'a, 'b>() -> App<'a, 'b> {

src/bin/mdbook.rs

@@ -8,22 +8,22 @@ extern crate log;
 extern crate mdbook;
 extern crate open;
 
+use chrono::Local;
+use clap::{App, AppSettings, ArgMatches};
+use env_logger::Builder;
+use log::LevelFilter;
+use mdbook::utils;
 use std::env;
 use std::ffi::OsStr;
-use std::path::{Path, PathBuf};
 use std::io::Write;
-use clap::{App, AppSettings, ArgMatches};
+use std::path::{Path, PathBuf};
-use chrono::Local;
-use log::LevelFilter;
-use env_logger::Builder;
-use mdbook::utils;
 
 pub mod build;
 pub mod clean;
 pub mod init;
-pub mod test;
 #[cfg(feature = "serve")]
 pub mod serve;
+pub mod test;
 #[cfg(feature = "watch")]
 pub mod watch;
 

src/bin/serve.rs

@@ -2,16 +2,17 @@ extern crate iron;
 extern crate staticfile;
 extern crate ws;
 
-use std;
+use self::iron::{
-use self::iron::{status, AfterMiddleware, Chain, Iron, IronError, IronResult, Request, Response,
+    status, AfterMiddleware, Chain, Iron, IronError, IronResult, Request, Response, Set,
-                 Set};
+};
 use clap::{App, ArgMatches, SubCommand};
-use mdbook::MDBook;
-use mdbook::utils;
 use mdbook::errors::*;
-use {get_book_dir, open};
+use mdbook::utils;
+use mdbook::MDBook;
+use std;
 #[cfg(feature = "watch")]
 use watch;
+use {get_book_dir, open};
 
 struct ErrorRecover;
 

src/bin/test.rs

@@ -1,15 +1,13 @@
 use clap::{App, ArgMatches, SubCommand};
-use mdbook::MDBook;
-use mdbook::errors::Result;
 use get_book_dir;
+use mdbook::errors::Result;
+use mdbook::MDBook;
 
 // Create clap subcommand arguments
 pub fn make_subcommand<'a, 'b>() -> App<'a, 'b> {
     SubCommand::with_name("test")
         .about("Test that code samples compile")
-        .arg_from_usage(
+        .arg_from_usage("-L, --library-path [DIR]... 'directory to add to crate search path'")
-            "-L, --library-path [DIR]... 'directory to add to crate search path'",
-        )
 }
 
 // test command implementation

src/bin/watch.rs

@@ -1,13 +1,13 @@
 extern crate notify;
 
-use std::path::Path;
 use self::notify::Watcher;
-use std::time::Duration;
-use std::sync::mpsc::channel;
 use clap::{App, ArgMatches, SubCommand};
-use mdbook::MDBook;
-use mdbook::utils;
 use mdbook::errors::Result;
+use mdbook::utils;
+use mdbook::MDBook;
+use std::path::Path;
+use std::sync::mpsc::channel;
+use std::time::Duration;
 use {get_book_dir, open};
 
 // Create clap subcommand arguments
@@ -48,8 +48,8 @@ pub fn trigger_on_change<F>(book: &MDBook, closure: F)
 where
     F: Fn(&Path, &Path),
 {
-    use self::notify::RecursiveMode::*;
     use self::notify::DebouncedEvent::*;
+    use self::notify::RecursiveMode::*;
 
     // Create a channel to receive the events.
     let (tx, rx) = channel();

src/book/book.rs

@@ -1,8 +1,8 @@
-use std::fmt::{self, Display, Formatter};
-use std::path::{Path, PathBuf};
 use std::collections::VecDeque;
+use std::fmt::{self, Display, Formatter};
 use std::fs::{self, File};
 use std::io::{Read, Write};
+use std::path::{Path, PathBuf};
 
 use super::summary::{parse_summary, Link, SectionNumber, Summary, SummaryItem};
 use config::BuildConfig;
@@ -297,8 +297,8 @@ impl Display for Chapter {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use tempfile::{TempDir, Builder as TempFileBuilder};
     use std::io::Write;
+    use tempfile::{Builder as TempFileBuilder, TempDir};
 
     const DUMMY_SRC: &'static str = "
 # Dummy Chapter
@@ -404,14 +404,12 @@ And here is some \
             ..Default::default()
         };
         let should_be = Book {
-            sections: vec![
+            sections: vec![BookItem::Chapter(Chapter {
-                BookItem::Chapter(Chapter {
                 name: String::from("Chapter 1"),
                 content: String::from(DUMMY_SRC),
                 path: PathBuf::from("chapter_1.md"),
                 ..Default::default()
-                }),
+            })],
-            ],
             ..Default::default()
         };
 
@@ -535,13 +533,11 @@ And here is some \
     fn cant_load_chapters_with_an_empty_path() {
         let (_, temp) = dummy_link();
         let summary = Summary {
-            numbered_chapters: vec![
+            numbered_chapters: vec![SummaryItem::Link(Link {
-                SummaryItem::Link(Link {
                 name: String::from("Empty"),
                 location: PathBuf::from(""),
                 ..Default::default()
-                }),
+            })],
-            ],
             ..Default::default()
         };
 
@@ -556,13 +552,11 @@ And here is some \
         fs::create_dir(&dir).unwrap();
 
         let summary = Summary {
-            numbered_chapters: vec![
+            numbered_chapters: vec![SummaryItem::Link(Link {
-                SummaryItem::Link(Link {
                 name: String::from("nested"),
                 location: dir,
                 ..Default::default()
-                }),
+            })],
-            ],
             ..Default::default()
         };
 

src/book/init.rs

@@ -1,12 +1,12 @@
 use std::fs::{self, File};
-use std::path::PathBuf;
 use std::io::Write;
+use std::path::PathBuf;
 use toml;
 
-use config::Config;
 use super::MDBook;
-use theme;
+use config::Config;
 use errors::*;
+use theme;
 
 /// A helper for setting up a new book and its directory structure.
 #[derive(Debug, Clone, PartialEq)]

src/book/mod.rs

@@ -5,29 +5,24 @@
 //!
 //! [1]: ../index.html
 
-mod summary;
 mod book;
 mod init;
+mod summary;
 
 pub use self::book::{load_book, Book, BookItem, BookItems, Chapter};
-pub use self::summary::{parse_summary, Link, SectionNumber, Summary, SummaryItem};
 pub use self::init::BookBuilder;
+pub use self::summary::{parse_summary, Link, SectionNumber, Summary, SummaryItem};
 
-use std::path::PathBuf;
 use std::io::Write;
+use std::path::PathBuf;
 use std::process::Command;
 use tempfile::Builder as TempFileBuilder;
 use toml::Value;
 
-use utils;
-use renderer::{CmdRenderer, HtmlHandlebars, RenderContext, Renderer};
-use preprocess::{
-    LinkPreprocessor,
-    IndexPreprocessor,
-    Preprocessor,
-    PreprocessorContext
-};
 use errors::*;
+use preprocess::{IndexPreprocessor, LinkPreprocessor, Preprocessor, PreprocessorContext};
+use renderer::{CmdRenderer, HtmlHandlebars, RenderContext, Renderer};
+use utils;
 
 use config::Config;
 

src/book/summary.rs

@@ -1,10 +1,10 @@
+use errors::*;
+use memchr::{self, Memchr};
+use pulldown_cmark::{self, Event, Tag};
 use std::fmt::{self, Display, Formatter};
 use std::iter::FromIterator;
 use std::ops::{Deref, DerefMut};
 use std::path::{Path, PathBuf};
-use memchr::{self, Memchr};
-use pulldown_cmark::{self, Event, Tag};
-use errors::*;
 
 /// Parse the text from a `SUMMARY.md` file into a sort of "recipe" to be
 /// used when loading a book from disk.
@@ -164,14 +164,13 @@ struct SummaryParser<'a> {
 /// use pattern matching and you won't get errors because `take_while()`
 /// moves `$stream` out of self.
 macro_rules! collect_events {
-    ($stream:expr, start $delimiter:pat) => {
+    ($stream:expr,start $delimiter:pat) => {
         collect_events!($stream, Event::Start($delimiter))
     };
-    ($stream:expr, end $delimiter:pat) => {
+    ($stream:expr,end $delimiter:pat) => {
         collect_events!($stream, Event::End($delimiter))
     };
-    ($stream:expr, $delimiter:pat) => {
+    ($stream:expr, $delimiter:pat) => {{
-        {
         let mut events = Vec::new();
 
         loop {
@@ -182,15 +181,17 @@ macro_rules! collect_events {
                 Some($delimiter) => break,
                 Some(other) => events.push(other),
                 None => {
-                        debug!("Reached end of stream without finding the closing pattern, {}", stringify!($delimiter));
+                    debug!(
+                        "Reached end of stream without finding the closing pattern, {}",
+                        stringify!($delimiter)
+                    );
                     break;
                 }
             }
         }
 
         events
-        }
+    }};
-    }
 }
 
 impl<'a> SummaryParser<'a> {
@@ -659,14 +660,12 @@ mod tests {
                 name: String::from("First"),
                 location: PathBuf::from("./first.md"),
                 number: Some(SectionNumber(vec![1])),
-                nested_items: vec![
+                nested_items: vec![SummaryItem::Link(Link {
-                    SummaryItem::Link(Link {
                     name: String::from("Nested"),
                     location: PathBuf::from("./nested.md"),
                     number: Some(SectionNumber(vec![1, 1])),
                     nested_items: Vec::new(),
-                    }),
+                })],
-                ],
             }),
             SummaryItem::Link(Link {
                 name: String::from("Second"),

src/config.rs

@@ -50,17 +50,17 @@
 
 #![deny(missing_docs)]
 
-use std::path::{Path, PathBuf};
-use std::fs::File;
-use std::io::Read;
-use std::env;
-use toml::{self, Value};
-use toml::value::Table;
-use toml_query::read::TomlValueReadExt;
-use toml_query::insert::TomlValueInsertExt;
-use toml_query::delete::TomlValueDeleteExt;
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use serde_json;
+use std::env;
+use std::fs::File;
+use std::io::Read;
+use std::path::{Path, PathBuf};
+use toml::value::Table;
+use toml::{self, Value};
+use toml_query::delete::TomlValueDeleteExt;
+use toml_query::insert::TomlValueInsertExt;
+use toml_query::read::TomlValueReadExt;
 
 use errors::*;
 
@@ -217,7 +217,8 @@ impl Config {
         // figure out what try_into() deserializes to.
         macro_rules! get_and_insert {
             ($table:expr, $key:expr => $out:expr) => {
-                let got = $table.as_table_mut()
+                let got = $table
+                    .as_table_mut()
                     .and_then(|t| t.remove($key))
                     .and_then(|v| v.try_into().ok());
                 if let Some(value) = got {

src/lib.rs

@@ -107,17 +107,17 @@ extern crate toml_query;
 #[macro_use]
 extern crate pretty_assertions;
 
-pub mod preprocess;
 pub mod book;
 pub mod config;
+pub mod preprocess;
 pub mod renderer;
 pub mod theme;
 pub mod utils;
 
-pub use book::MDBook;
 pub use book::BookItem;
-pub use renderer::Renderer;
+pub use book::MDBook;
 pub use config::Config;
+pub use renderer::Renderer;
 
 /// The error types used through out this crate.
 pub mod errors {

src/preprocess/index.rs

@@ -1,5 +1,5 @@
-use std::path::Path;
 use regex::Regex;
+use std::path::Path;
 
 use errors::*;
 
@@ -27,8 +27,7 @@ impl Preprocessor for IndexPreprocessor {
         book.for_each_mut(|section: &mut BookItem| {
             if let BookItem::Chapter(ref mut ch) = *section {
                 if is_readme_file(&ch.path) {
-                    let index_md = source_dir
+                    let index_md = source_dir.join(ch.path.with_file_name("index.md"));
-                        .join(ch.path.with_file_name("index.md"));
                     if index_md.exists() {
                         warn_readme_name_conflict(&ch.path, &index_md);
                     }
@@ -45,8 +44,15 @@ impl Preprocessor for IndexPreprocessor {
 fn warn_readme_name_conflict<P: AsRef<Path>>(readme_path: P, index_path: P) {
     let file_name = readme_path.as_ref().file_name().unwrap_or_default();
     let parent_dir = index_path.as_ref().parent().unwrap_or(index_path.as_ref());
-    warn!("It seems that there are both {:?} and index.md under \"{}\".", file_name, parent_dir.display());
+    warn!(
-    warn!("mdbook converts {:?} into index.html by default. It may cause", file_name);
+        "It seems that there are both {:?} and index.md under \"{}\".",
+        file_name,
+        parent_dir.display()
+    );
+    warn!(
+        "mdbook converts {:?} into index.html by default. It may cause",
+        file_name
+    );
     warn!("unexpected behavior if putting both files under the same directory.");
     warn!("To solve the warning, try to rearrange the book structure or disable");
     warn!("\"index\" preprocessor to stop the conversion.");
@@ -60,7 +66,7 @@ fn is_readme_file<P: AsRef<Path>>(path: P) -> bool {
         path.as_ref()
             .file_stem()
             .and_then(|s| s.to_str())
-            .unwrap_or_default()
+            .unwrap_or_default(),
     )
 }
 

src/preprocess/links.rs

@@ -1,9 +1,9 @@
+use errors::*;
+use regex::{CaptureMatches, Captures, Regex};
 use std::ops::{Range, RangeFrom, RangeFull, RangeTo};
 use std::path::{Path, PathBuf};
-use regex::{CaptureMatches, Captures, Regex};
 use utils::fs::file_to_string;
 use utils::take_lines;
-use errors::*;
 
 use super::{Preprocessor, PreprocessorContext};
 use book::{Book, BookItem};
@@ -62,12 +62,18 @@ fn replace_all<P: AsRef<Path>>(s: &str, path: P, source: &P, depth: usize) -> St
             Ok(new_content) => {
                 if depth < MAX_LINK_NESTED_DEPTH {
                     if let Some(rel_path) = playpen.link.relative_path(path) {
-                        replaced.push_str(&replace_all(&new_content, rel_path, &source.to_path_buf(), depth + 1));
+                        replaced.push_str(&replace_all(
+                            &new_content,
+                            rel_path,
+                            &source.to_path_buf(),
+                            depth + 1,
+                        ));
                     }
-                }
+                } else {
-                else {
+                    error!(
-                    error!("Stack depth exceeded in {}. Check for cyclic includes",
+                        "Stack depth exceeded in {}. Check for cyclic includes",
-                            source.display());
+                        source.display()
+                    );
                 }
                 previous_end_index = playpen.end_index;
             }
@@ -103,7 +109,7 @@ impl<'a> LinkType<'a> {
             LinkType::IncludeRangeFrom(p, _) => Some(return_relative_path(base, &p)),
             LinkType::IncludeRangeTo(p, _) => Some(return_relative_path(base, &p)),
             LinkType::IncludeRangeFull(p, _) => Some(return_relative_path(base, &p)),
-            LinkType::Playpen(p,_) => Some(return_relative_path(base, &p))
+            LinkType::Playpen(p, _) => Some(return_relative_path(base, &p)),
         }
     }
 }
@@ -241,15 +247,16 @@ fn find_links(contents: &str) -> LinkIter {
     // lazily compute following regex
     // r"\\\{\{#.*\}\}|\{\{#([a-zA-Z0-9]+)\s*([a-zA-Z0-9_.\-:/\\\s]+)\}\}")?;
     lazy_static! {
-        static ref RE: Regex = Regex::new(r"(?x) # insignificant whitespace mode
+        static ref RE: Regex = Regex::new(
+            r"(?x)                     # insignificant whitespace mode
             \\\{\{\#.*\}\}             # match escaped link
             |                          # or
             \{\{\s*                    # link opening parens and whitespace
             \#([a-zA-Z0-9]+)           # link type
             \s+                        # separating whitespace
             ([a-zA-Z0-9\s_.\-:/\\]+)   # link target path and space separated properties
-                    \s*\}\}                      # whitespace and link closing parens
+            \s*\}\}                    # whitespace and link closing parens"
-                                 ").unwrap();
+        ).unwrap();
     }
     LinkIter(RE.captures_iter(contents))
 }
@@ -319,14 +326,12 @@ mod tests {
         println!("\nOUTPUT: {:?}\n", res);
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 22,
                 end_index: 48,
                 link: LinkType::IncludeRange(PathBuf::from("file.rs"), 9..20),
                 link_text: "{{#include file.rs:10:20}}",
-                },
+            }]
-            ]
         );
     }
 
@@ -337,14 +342,12 @@ mod tests {
         println!("\nOUTPUT: {:?}\n", res);
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 22,
                 end_index: 45,
                 link: LinkType::IncludeRange(PathBuf::from("file.rs"), 9..10),
                 link_text: "{{#include file.rs:10}}",
-                },
+            }]
-            ]
         );
     }
 
@@ -355,14 +358,12 @@ mod tests {
         println!("\nOUTPUT: {:?}\n", res);
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 22,
                 end_index: 46,
                 link: LinkType::IncludeRangeFrom(PathBuf::from("file.rs"), 9..),
                 link_text: "{{#include file.rs:10:}}",
-                },
+            }]
-            ]
         );
     }
 
@@ -373,14 +374,12 @@ mod tests {
         println!("\nOUTPUT: {:?}\n", res);
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 22,
                 end_index: 46,
                 link: LinkType::IncludeRangeTo(PathBuf::from("file.rs"), ..20),
                 link_text: "{{#include file.rs::20}}",
-                },
+            }]
-            ]
         );
     }
 
@@ -391,14 +390,12 @@ mod tests {
         println!("\nOUTPUT: {:?}\n", res);
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 22,
                 end_index: 44,
                 link: LinkType::IncludeRangeFull(PathBuf::from("file.rs"), ..),
                 link_text: "{{#include file.rs::}}",
-                },
+            }]
-            ]
         );
     }
 
@@ -409,14 +406,12 @@ mod tests {
         println!("\nOUTPUT: {:?}\n", res);
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 22,
                 end_index: 42,
                 link: LinkType::IncludeRangeFull(PathBuf::from("file.rs"), ..),
                 link_text: "{{#include file.rs}}",
-                },
+            }]
-            ]
         );
     }
 
@@ -429,14 +424,12 @@ mod tests {
 
         assert_eq!(
             res,
-            vec![
+            vec![Link {
-                Link {
                 start_index: 38,
                 end_index: 68,
                 link: LinkType::Escaped,
                 link_text: "\\{{#playpen file.rs editable}}",
-                },
+            }]
-            ]
         );
     }
 

src/preprocess/mod.rs

@@ -1,10 +1,10 @@
 //! Book preprocessing.
 
-pub use self::links::LinkPreprocessor;
 pub use self::index::IndexPreprocessor;
+pub use self::links::LinkPreprocessor;
 
-mod links;
 mod index;
+mod links;
 
 use book::Book;
 use config::Config;

src/renderer/html_handlebars/hbs_renderer.rs

@@ -132,8 +132,11 @@ impl HtmlHandlebars {
     ) -> Result<()> {
         use utils::fs::write_file;
 
-        write_file(destination, ".nojekyll", 
+        write_file(
-            b"This file makes sure that Github Pages doesn't process mdBook's output.")?;
+            destination,
+            ".nojekyll",
+            b"This file makes sure that Github Pages doesn't process mdBook's output.",
+        )?;
 
         write_file(destination, "book.js", &theme.js)?;
         write_file(destination, "book.css", &theme.css)?;
@@ -450,7 +453,10 @@ fn make_data(
     if cfg!(feature = "search") {
         let search = search.unwrap_or_default();
         data.insert("search_enabled".to_owned(), json!(search.enable));
-        data.insert("search_js".to_owned(), json!(search.enable && search.copy_js));
+        data.insert(
+            "search_js".to_owned(),
+            json!(search.enable && search.copy_js),
+        );
     } else if search.is_some() {
         warn!("mdBook compiled without search support, ignoring `output.html.search` table");
         warn!(
@@ -513,7 +519,7 @@ fn build_header_links(html: &str) -> String {
 fn wrap_header_with_link(
     level: usize,
     content: &str,
-    id_counter: &mut HashMap<String, usize>
+    id_counter: &mut HashMap<String, usize>,
 ) -> String {
     let raw_id = utils::id_from_content(content);
 
@@ -534,7 +540,6 @@ fn wrap_header_with_link(
     )
 }
 
-
 // The rust book uses annotations for rustdoc to test code snippets,
 // like the following:
 // ```rust,should_panic
@@ -574,7 +579,8 @@ fn add_playpen_pre(html: &str, playpen_config: &Playpen) -> String {
             {
                 // wrap the contents in an external pre block
                 if playpen_config.editable && classes.contains("editable")
-                    || text.contains("fn main") || text.contains("quick_main!")
+                    || text.contains("fn main")
+                    || text.contains("quick_main!")
                 {
                     format!("<pre class=\"playpen\">{}</pre>", text)
                 } else {

src/renderer/html_handlebars/helpers/mod.rs

@@ -1,2 +1,2 @@
-pub mod toc;
 pub mod navigation;
+pub mod toc;

src/renderer/html_handlebars/helpers/navigation.rs

@@ -1,8 +1,8 @@
-use std::path::Path;
 use std::collections::BTreeMap;
+use std::path::Path;
 
-use serde_json;
 use handlebars::{Context, Handlebars, Helper, RenderContext, RenderError, Renderable};
+use serde_json;
 
 use utils;
 
@@ -94,8 +94,10 @@ fn render(
         .ok_or_else(|| RenderError::new("Type error for `path`, string expected"))?
         .replace("\"", "");
 
-    context.insert("path_to_root".to_owned(),
+    context.insert(
-                                json!(utils::fs::path_to_root(&base_path)));
+        "path_to_root".to_owned(),
+        json!(utils::fs::path_to_root(&base_path)),
+    );
 
     chapter
         .get("name")

src/renderer/html_handlebars/helpers/toc.rs

@@ -1,11 +1,11 @@
-use std::path::Path;
 use std::collections::BTreeMap;
+use std::path::Path;
 
 use utils;
 
-use serde_json;
 use handlebars::{Handlebars, Helper, HelperDef, RenderContext, RenderError};
 use pulldown_cmark::{html, Event, Parser, Tag};
+use serde_json;
 
 // Handlebars helper to construct TOC
 #[derive(Clone, Copy)]
@@ -79,7 +79,8 @@ impl HelperDef for RenderToc {
                         .replace("\\", "/");
 
                     // Add link
-                    rc.writer.write_all(&utils::fs::path_to_root(&current).as_bytes())?;
+                    rc.writer
+                        .write_all(&utils::fs::path_to_root(&current).as_bytes())?;
                     rc.writer.write_all(tmp.as_bytes())?;
                     rc.writer.write_all(b"\"")?;
 

src/renderer/html_handlebars/search.rs

@@ -5,15 +5,15 @@ use std::borrow::Cow;
 use std::collections::{HashMap, HashSet};
 use std::path::Path;
 
+use self::elasticlunr::Index;
 use pulldown_cmark::*;
 use serde_json;
-use self::elasticlunr::Index;
 
 use book::{Book, BookItem};
 use config::Search;
 use errors::*;
-use utils;
 use theme::searcher;
+use utils;
 
 /// Creates all files required for search.
 pub fn create_files(search_config: &Search, destination: &Path, book: &Book) -> Result<()> {
@@ -32,7 +32,11 @@ pub fn create_files(search_config: &Search, destination: &Path, book: &Book) ->
 
     if search_config.copy_js {
         utils::fs::write_file(destination, "searchindex.json", index.as_bytes())?;
-        utils::fs::write_file(destination, "searchindex.js", format!("window.search = {};", index).as_bytes())?;
+        utils::fs::write_file(
+            destination,
+            "searchindex.js",
+            format!("window.search = {};", index).as_bytes(),
+        )?;
         utils::fs::write_file(destination, "searcher.js", searcher::JS)?;
         utils::fs::write_file(destination, "mark.min.js", searcher::MARK_JS)?;
         utils::fs::write_file(destination, "elasticlunr.min.js", searcher::ELASTICLUNR_JS)?;
@@ -166,8 +170,8 @@ fn render_item(
 }
 
 fn write_to_json(index: Index, search_config: &Search, doc_urls: Vec<String>) -> Result<String> {
-    use std::collections::BTreeMap;
     use self::elasticlunr::config::{SearchBool, SearchOptions, SearchOptionsField};
+    use std::collections::BTreeMap;
 
     #[derive(Serialize)]
     struct ResultsOptions {

src/renderer/mod.rs

@@ -15,16 +15,16 @@ pub use self::html_handlebars::HtmlHandlebars;
 
 mod html_handlebars;
 
+use serde_json;
+use shlex::Shlex;
 use std::fs;
 use std::io::{self, Read};
 use std::path::PathBuf;
 use std::process::{Command, Stdio};
-use serde_json;
-use shlex::Shlex;
 
-use errors::*;
-use config::Config;
 use book::Book;
+use config::Config;
+use errors::*;
 
 const MDBOOK_VERSION: &str = env!("CARGO_PKG_VERSION");
 
@@ -162,10 +162,14 @@ impl Renderer for CmdRenderer {
             .stdout(Stdio::inherit())
             .stderr(Stdio::inherit())
             .current_dir(&ctx.destination)
-            .spawn() {
+            .spawn()
+        {
             Ok(c) => c,
             Err(ref e) if e.kind() == io::ErrorKind::NotFound => {
-                    warn!("The command wasn't found, is the \"{}\" backend installed?", self.name);
+                warn!(
+                    "The command wasn't found, is the \"{}\" backend installed?",
+                    self.name
+                );
                 warn!("\tCommand: {}", self.cmd);
                 return Ok(());
             }

src/theme/mod.rs

@@ -5,9 +5,9 @@ pub mod playpen_editor;
 #[cfg(feature = "search")]
 pub mod searcher;
 
-use std::path::Path;
 use std::fs::File;
 use std::io::Read;
+use std::path::Path;
 
 use errors::*;
 
@@ -34,7 +34,6 @@ pub static FONT_AWESOME_WOFF2: &'static [u8] =
     include_bytes!("FontAwesome/fonts/fontawesome-webfont.woff2");
 pub static FONT_AWESOME_OTF: &'static [u8] = include_bytes!("FontAwesome/fonts/FontAwesome.otf");
 
-
 /// The `Theme` struct should be used instead of the static variables because
 /// the `new()` method will look if the user has a theme directory in their
 /// source folder and use the users theme instead of the default.
@@ -78,8 +77,14 @@ impl Theme {
                 (theme_dir.join("highlight.js"), &mut theme.highlight_js),
                 (theme_dir.join("clipboard.min.js"), &mut theme.clipboard_js),
                 (theme_dir.join("highlight.css"), &mut theme.highlight_css),
-                (theme_dir.join("tomorrow-night.css"), &mut theme.tomorrow_night_css),
+                (
-                (theme_dir.join("ayu-highlight.css"), &mut theme.ayu_highlight_css),
+                    theme_dir.join("tomorrow-night.css"),
+                    &mut theme.tomorrow_night_css,
+                ),
+                (
+                    theme_dir.join("ayu-highlight.css"),
+                    &mut theme.ayu_highlight_css,
+                ),
             ];
 
             for (filename, dest) in files {
@@ -130,12 +135,11 @@ fn load_file_contents<P: AsRef<Path>>(filename: P, dest: &mut Vec<u8>) -> Result
     Ok(())
 }
 
-
 #[cfg(test)]
 mod tests {
     use super::*;
-    use tempfile::Builder as TempFileBuilder;
     use std::path::PathBuf;
+    use tempfile::Builder as TempFileBuilder;
 
     #[test]
     fn theme_uses_defaults_with_nonexistent_src_dir() {

src/utils/fs.rs

@@ -25,16 +25,10 @@ pub fn normalize_path(path: &str) -> String {
 }
 
 /// Write the given data to a file, creating it first if necessary
-pub fn write_file<P: AsRef<Path>>(
+pub fn write_file<P: AsRef<Path>>(build_dir: &Path, filename: P, content: &[u8]) -> Result<()> {
-    build_dir: &Path,
-    filename: P,
-    content: &[u8],
-) -> Result<()> {
     let path = build_dir.join(filename);
 
-    create_file(&path)?
+    create_file(&path)?.write_all(content).map_err(|e| e.into())
-        .write_all(content)
-        .map_err(|e| e.into())
 }
 
 /// Takes a path and returns a path containing just enough `../` to point to

src/utils/mod.rs

@@ -5,12 +5,13 @@ mod string;
 use errors::Error;
 use regex::Regex;
 
-use pulldown_cmark::{html, Event, Options, Parser, Tag, OPTION_ENABLE_FOOTNOTES,
+use pulldown_cmark::{
-                     OPTION_ENABLE_TABLES};
+    html, Event, Options, Parser, Tag, OPTION_ENABLE_FOOTNOTES, OPTION_ENABLE_TABLES,
+};
 
 use std::borrow::Cow;
 
-pub use self::string::{RangeArgument, take_lines};
+pub use self::string::{take_lines, RangeArgument};
 
 /// Replaces multiple consecutive whitespace characters with a single space character.
 pub fn collapse_whitespace<'a>(text: &'a str) -> Cow<'a, str> {
@@ -35,7 +36,10 @@ pub fn normalize_id(content: &str) -> String {
         })
         .collect::<String>();
     // Ensure that the first character is [A-Za-z]
-    if ret.chars().next().map_or(false, |c| !c.is_ascii_alphabetic()) {
+    if ret.chars()
+        .next()
+        .map_or(false, |c| !c.is_ascii_alphabetic())
+    {
         ret.insert(0, 'a');
     }
     ret
@@ -47,7 +51,8 @@ pub fn id_from_content(content: &str) -> String {
     let mut content = content.to_string();
 
     // Skip any tags or html-encoded stuff
-    const REPL_SUB: &[&str] = &["<em>",
+    const REPL_SUB: &[&str] = &[
+        "<em>",
         "</em>",
         "<code>",
         "</code>",
@@ -57,7 +62,8 @@ pub fn id_from_content(content: &str) -> String {
         "&gt;",
         "&amp;",
         "&#39;",
-                                "&quot;"];
+        "&quot;",
+    ];
     for sub in REPL_SUB {
         content = content.replace(sub, "");
     }
@@ -69,7 +75,6 @@ pub fn id_from_content(content: &str) -> String {
 }
 
 fn adjust_links(event: Event) -> Event {
-
     lazy_static! {
         static ref HTTP_LINK: Regex = Regex::new("^https?://").unwrap();
         static ref MD_LINK: Regex = Regex::new("(?P<link>.*).md(?P<anchor>#.*)?").unwrap();
@@ -79,22 +84,20 @@ fn adjust_links(event: Event) -> Event {
         Event::Start(Tag::Link(dest, title)) => {
             if !HTTP_LINK.is_match(&dest) {
                 if let Some(caps) = MD_LINK.captures(&dest) {
-
                     let mut html_link = [&caps["link"], ".html"].concat();
 
                     if let Some(anchor) = caps.name("anchor") {
                         html_link.push_str(anchor.as_str());
                     }
 
-                    return Event::Start(Tag::Link(Cow::from(html_link), title))
+                    return Event::Start(Tag::Link(Cow::from(html_link), title));
                 }
             }
 
             Event::Start(Tag::Link(dest, title))
-        },
-        _ => event
         }
-
+        _ => event,
+    }
 }
 
 /// Wrapper around the pulldown-cmark parser for rendering markdown to HTML.
@@ -161,12 +164,12 @@ fn clean_codeblock_headers(event: Event) -> Event {
     }
 }
 
-
 fn convert_quotes_to_curly(original_text: &str) -> String {
     // We'll consider the start to be "whitespace".
     let mut preceded_by_whitespace = true;
 
-    original_text.chars()
+    original_text
+        .chars()
         .map(|original_char| {
             let converted_char = match original_char {
                 '\'' => {
@@ -209,13 +212,22 @@ mod tests {
 
         #[test]
         fn preserves_external_links() {
-           assert_eq!(render_markdown("[example](https://www.rust-lang.org/)", false), "<p><a href=\"https://www.rust-lang.org/\">example</a></p>\n");
+            assert_eq!(
+                render_markdown("[example](https://www.rust-lang.org/)", false),
+                "<p><a href=\"https://www.rust-lang.org/\">example</a></p>\n"
+            );
         }
 
         #[test]
         fn it_can_adjust_markdown_links() {
-            assert_eq!(render_markdown("[example](example.md)", false), "<p><a href=\"example.html\">example</a></p>\n");
+            assert_eq!(
-            assert_eq!(render_markdown("[example_anchor](example.md#anchor)", false), "<p><a href=\"example.html#anchor\">example_anchor</a></p>\n");
+                render_markdown("[example](example.md)", false),
+                "<p><a href=\"example.html\">example</a></p>\n"
+            );
+            assert_eq!(
+                render_markdown("[example_anchor](example.md#anchor)", false),
+                "<p><a href=\"example.html#anchor\">example_anchor</a></p>\n"
+            );
         }
 
         #[test]
@@ -316,18 +328,26 @@ more text with spaces
 
         #[test]
         fn it_generates_anchors() {
-            assert_eq!(id_from_content("## `--passes`: add more rustdoc passes"),
+            assert_eq!(
-                    "a--passes-add-more-rustdoc-passes");
+                id_from_content("## `--passes`: add more rustdoc passes"),
-            assert_eq!(id_from_content("## Method-call expressions"),
+                "a--passes-add-more-rustdoc-passes"
-                    "method-call-expressions");
+            );
+            assert_eq!(
+                id_from_content("## Method-call expressions"),
+                "method-call-expressions"
+            );
         }
 
         #[test]
         fn it_normalizes_ids() {
-            assert_eq!(normalize_id("`--passes`: add more rustdoc passes"),
+            assert_eq!(
-                    "a--passes-add-more-rustdoc-passes");
+                normalize_id("`--passes`: add more rustdoc passes"),
-            assert_eq!(normalize_id("Method-call 🐙 expressions \u{1f47c}"),
+                "a--passes-add-more-rustdoc-passes"
-                    "method-call--expressions-");
+            );
+            assert_eq!(
+                normalize_id("Method-call 🐙 expressions \u{1f47c}"),
+                "method-call--expressions-"
+            );
             assert_eq!(normalize_id("_-_12345"), "a_-_12345");
             assert_eq!(normalize_id("12345"), "a12345");
             assert_eq!(normalize_id(""), "");
@@ -339,14 +359,18 @@ more text with spaces
 
         #[test]
         fn it_converts_single_quotes() {
-            assert_eq!(convert_quotes_to_curly("'one', 'two'"),
+            assert_eq!(
-                       "‘one’, ‘two’");
+                convert_quotes_to_curly("'one', 'two'"),
+                "‘one’, ‘two’"
+            );
         }
 
         #[test]
         fn it_converts_double_quotes() {
-            assert_eq!(convert_quotes_to_curly(r#""one", "two""#),
+            assert_eq!(
-                       "“one”, “two”");
+                convert_quotes_to_curly(r#""one", "two""#),
+                "“one”, “two”"
+            );
         }
 
         #[test]

src/utils/string.rs

@@ -1,5 +1,5 @@
-use std::ops::{Range, RangeFrom, RangeFull, RangeTo};
 use itertools::Itertools;
+use std::ops::{Range, RangeFrom, RangeFull, RangeTo};
 
 // This trait is already contained in the standard lib, however it is unstable.
 // TODO: Remove when the `collections_range` feature stabilises

tests/alternate_backends.rs

@@ -3,11 +3,11 @@
 extern crate mdbook;
 extern crate tempfile;
 
-#[cfg(not(windows))]
-use std::path::Path;
-use tempfile::{TempDir, Builder as TempFileBuilder};
 use mdbook::config::Config;
 use mdbook::MDBook;
+#[cfg(not(windows))]
+use std::path::Path;
+use tempfile::{Builder as TempFileBuilder, TempDir};
 
 #[test]
 fn passing_alternate_backend() {
@@ -52,8 +52,8 @@ fn tee_command<P: AsRef<Path>>(out_file: P) -> String {
 #[test]
 #[cfg(not(windows))]
 fn backends_receive_render_context_via_stdin() {
-    use std::fs::File;
     use mdbook::renderer::RenderContext;
+    use std::fs::File;
 
     let temp = TempFileBuilder::new().prefix("output").tempdir().unwrap();
     let out_file = temp.path().join("out.txt");

tests/dummy_book/mod.rs

@@ -7,19 +7,18 @@ extern crate mdbook;
 extern crate tempfile;
 extern crate walkdir;
 
-use std::path::Path;
-use std::fs::{self, File};
-use std::io::{Read, Write};
 use mdbook::errors::*;
 use mdbook::utils::fs::file_to_string;
+use std::fs::{self, File};
+use std::io::{Read, Write};
+use std::path::Path;
 
 // The funny `self::` here is because we've got an `extern crate ...` and are
 // in a submodule
-use self::tempfile::{TempDir, Builder as TempFileBuilder};
 use self::mdbook::MDBook;
+use self::tempfile::{Builder as TempFileBuilder, TempDir};
 use self::walkdir::WalkDir;
 
-
 /// Create a dummy book in a temporary directory, using the contents of
 /// `SUMMARY_MD` as a guide.
 ///
@@ -47,7 +46,10 @@ impl DummyBook {
 
     /// Write a book to a temporary directory using the provided settings.
     pub fn build(&self) -> Result<TempDir> {
-        let temp = TempFileBuilder::new().prefix("dummy_book").tempdir().chain_err(|| "Unable to create temp directory")?;
+        let temp = TempFileBuilder::new()
+            .prefix("dummy_book")
+            .tempdir()
+            .chain_err(|| "Unable to create temp directory")?;
 
         let dummy_book_root = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/dummy_book");
         recursive_copy(&dummy_book_root, temp.path()).chain_err(|| {
@@ -77,11 +79,13 @@ pub fn assert_contains_strings<P: AsRef<Path>>(filename: P, strings: &[&str]) {
     let content = file_to_string(filename).expect("Couldn't read the file's contents");
 
     for s in strings {
-        assert!(content.contains(s),
+        assert!(
+            content.contains(s),
             "Searching for {:?} in {}\n\n{}",
             s,
             filename.display(),
-                content);
+            content
+        );
     }
 }
 
@@ -90,15 +94,16 @@ pub fn assert_doesnt_contain_strings<P: AsRef<Path>>(filename: P, strings: &[&st
     let content = file_to_string(filename).expect("Couldn't read the file's contents");
 
     for s in strings {
-        assert!(!content.contains(s),
+        assert!(
+            !content.contains(s),
             "Found {:?} in {}\n\n{}",
             s,
             filename.display(),
-                content);
+            content
+        );
     }
 }
 
-
 /// Recursively copy an entire directory tree to somewhere else (a la `cp -r`).
 fn recursive_copy<A: AsRef<Path>, B: AsRef<Path>>(from: A, to: B) -> Result<()> {
     let from = from.as_ref();
@@ -108,9 +113,9 @@ fn recursive_copy<A: AsRef<Path>, B: AsRef<Path>>(from: A, to: B) -> Result<()>
         let entry = entry.chain_err(|| "Unable to inspect directory entry")?;
 
         let original_location = entry.path();
-        let relative = original_location.strip_prefix(&from)
+        let relative = original_location
-                                        .expect("`original_location` is inside the `from` \
+            .strip_prefix(&from)
-                                                 directory");
+            .expect("`original_location` is inside the `from` directory");
         let new_location = to.join(relative);
 
         if original_location.is_file() {
@@ -118,9 +123,8 @@ fn recursive_copy<A: AsRef<Path>, B: AsRef<Path>>(from: A, to: B) -> Result<()>
                 fs::create_dir_all(parent).chain_err(|| "Couldn't create directory")?;
             }
 
-            fs::copy(&original_location, &new_location).chain_err(|| {
+            fs::copy(&original_location, &new_location)
-                                                                      "Unable to copy file contents"
+                .chain_err(|| "Unable to copy file contents")?;
-                                                                  })?;
         }
     }
 

tests/init.rs

@@ -1,13 +1,12 @@
 extern crate mdbook;
 extern crate tempfile;
 
-use std::path::PathBuf;
-use std::fs;
-use mdbook::MDBook;
 use mdbook::config::Config;
+use mdbook::MDBook;
+use std::fs;
+use std::path::PathBuf;
 use tempfile::Builder as TempFileBuilder;
 
-
 /// Run `mdbook init` in an empty directory and make sure the default files
 /// are created.
 #[test]

tests/parse_existing_summary_files.rs

@@ -5,10 +5,10 @@ extern crate env_logger;
 extern crate error_chain;
 extern crate mdbook;
 
+use mdbook::book;
 use std::fs::File;
 use std::io::Read;
 use std::path::Path;
-use mdbook::book;
 
 macro_rules! summary_md_test {
     ($name:ident, $filename:expr) => {

tests/rendered_output.rs

@@ -9,18 +9,18 @@ mod dummy_book;
 
 use dummy_book::{assert_contains_strings, assert_doesnt_contain_strings, DummyBook};
 
+use mdbook::config::Config;
+use mdbook::errors::*;
+use mdbook::utils::fs::{file_to_string, write_file};
+use mdbook::MDBook;
+use select::document::Document;
+use select::predicate::{Class, Name, Predicate};
+use std::ffi::OsStr;
 use std::fs;
 use std::io::Write;
 use std::path::Path;
-use std::ffi::OsStr;
-use walkdir::{DirEntry, WalkDir};
-use select::document::Document;
-use select::predicate::{Class, Name, Predicate};
 use tempfile::Builder as TempFileBuilder;
-use mdbook::errors::*;
+use walkdir::{DirEntry, WalkDir};
-use mdbook::utils::fs::{file_to_string, write_file};
-use mdbook::config::Config;
-use mdbook::MDBook;
 
 const BOOK_ROOT: &'static str = concat!(env!("CARGO_MANIFEST_DIR"), "/tests/dummy_book");
 const TOC_TOP_LEVEL: &[&'static str] = &[
@@ -29,7 +29,8 @@ const TOC_TOP_LEVEL: &[&'static str] = &[
     "Conclusion",
     "Introduction",
 ];
-const TOC_SECOND_LEVEL: &[&'static str] = &["1.1. Nested Chapter", "1.2. Includes", "1.3. Recursive"];
+const TOC_SECOND_LEVEL: &[&'static str] =
+    &["1.1. Nested Chapter", "1.2. Includes", "1.3. Recursive"];
 
 /// Make sure you can load the dummy book and build it without panicking.
 #[test]
@@ -98,16 +99,12 @@ fn check_correct_cross_links_in_nested_dir() {
 
     assert_contains_strings(
         first.join("index.html"),
-        &[
+        &[r##"href="#some-section" id="some-section""##],
-            r##"href="#some-section" id="some-section""##,
-        ],
     );
 
     assert_contains_strings(
         first.join("nested.html"),
-        &[
+        &[r##"href="#some-section" id="some-section""##],
-            r##"href="#some-section" id="some-section""##,
-        ],
     );
 }
 
@@ -357,14 +354,12 @@ fn book_with_a_reserved_filename_does_not_build() {
 fn by_default_mdbook_use_index_preprocessor_to_convert_readme_to_index() {
     let temp = DummyBook::new().build().unwrap();
     let mut cfg = Config::default();
-    cfg.set("book.src", "src2").expect("Couldn't set config.book.src to \"src2\".");
+    cfg.set("book.src", "src2")
+        .expect("Couldn't set config.book.src to \"src2\".");
     let md = MDBook::load_with_config(temp.path(), cfg).unwrap();
     md.build().unwrap();
 
-    let first_index = temp.path()
+    let first_index = temp.path().join("book").join("first").join("index.html");
-        .join("book")
-        .join("first")
-        .join("index.html");
     let expected_strings = vec![
         r#"href="../first/index.html""#,
         r#"href="../second/index.html""#,
@@ -373,13 +368,8 @@ fn by_default_mdbook_use_index_preprocessor_to_convert_readme_to_index() {
     assert_contains_strings(&first_index, &expected_strings);
     assert_doesnt_contain_strings(&first_index, &vec!["README.html"]);
 
-    let second_index = temp.path()
+    let second_index = temp.path().join("book").join("second").join("index.html");
-        .join("book")
+    let unexpected_strings = vec!["Second README"];
-        .join("second")
-        .join("index.html");
-    let unexpected_strings = vec![
-        "Second README",
-    ];
     assert_doesnt_contain_strings(&second_index, &unexpected_strings);
 }
 
@@ -404,11 +394,11 @@ fn theme_dir_overrides_work_correctly() {
 #[cfg(feature = "search")]
 mod search {
     extern crate serde_json;
-    use std::fs::File;
+    use dummy_book::DummyBook;
-    use std::path::Path;
     use mdbook::utils::fs::file_to_string;
     use mdbook::MDBook;
-    use dummy_book::DummyBook;
+    use std::fs::File;
+    use std::path::Path;
 
     fn read_book_index(root: &Path) -> serde_json::Value {
         let index = root.join("book/searchindex.js");
@@ -427,12 +417,8 @@ mod search {
         let index = read_book_index(temp.path());
 
         let doc_urls = index["doc_urls"].as_array().unwrap();
-        let get_doc_ref = |url: &str| -> String {
+        let get_doc_ref =
-            doc_urls.iter()
+            |url: &str| -> String { doc_urls.iter().position(|s| s == url).unwrap().to_string() };
-                .position(|s| s == url)
-                .unwrap()
-                .to_string()
-        };
 
         let first_chapter = get_doc_ref("first/index.html#first-chapter");
         let introduction = get_doc_ref("intro.html#introduction");
@@ -453,14 +439,8 @@ mod search {
             docs[&summary]["body"],
             "Introduction First Chapter Nested Chapter Includes Recursive Second Chapter Conclusion"
         );
-        assert_eq!(
+        assert_eq!(docs[&summary]["breadcrumbs"], "First Chapter » Summary");
-            docs[&summary]["breadcrumbs"],
+        assert_eq!(docs[&conclusion]["body"], "I put <HTML> in here!");
-            "First Chapter » Summary"
-        );
-        assert_eq!(
-            docs[&conclusion]["body"],
-            "I put <HTML> in here!"
-        );
     }
 
     // Setting this to `true` may cause issues with `cargo watch`,

tests/testing.rs

@@ -4,11 +4,11 @@ mod dummy_book;
 
 use dummy_book::DummyBook;
 
-use mdbook::MDBook;
-use mdbook::preprocess::{Preprocessor, PreprocessorContext};
 use mdbook::book::Book;
 use mdbook::config::Config;
 use mdbook::errors::*;
+use mdbook::preprocess::{Preprocessor, PreprocessorContext};
+use mdbook::MDBook;
 
 use std::sync::{Arc, Mutex};
 
@@ -30,7 +30,6 @@ fn mdbook_detects_book_with_failing_tests() {
 
 #[test]
 fn mdbook_runs_preprocessors() {
-
     let has_run: Arc<Mutex<bool>> = Arc::new(Mutex::new(false));
 
     struct DummyPreprocessor(Arc<Mutex<bool>>);