# Changelog

## mdBook 0.3.2
[9cd47eb...2b649fe](https://github.com/rust-lang-nursery/mdBook/compare/9cd47eb...2b649fe)

### Added
- Added a markdown renderer, which is off by default. This may be useful for
  debugging preprocessors.
  [#1018](https://github.com/rust-lang-nursery/mdBook/pull/1018)
- Code samples may now include line numbers with the
  `output.html.playpen.line-numbers` configuration value.
  [#1035](https://github.com/rust-lang-nursery/mdBook/pull/1035)
- The `watch` and `serve` commands will now ignore files listed in
  `.gitignore`.
  [#1044](https://github.com/rust-lang-nursery/mdBook/pull/1044)
- Added automatic dark-theme detection based on the CSS `prefers-color-scheme`
  feature. This may be enabled by setting `output.html.preferred-dark-theme`
  to your preferred dark theme.
  [#1037](https://github.com/rust-lang-nursery/mdBook/pull/1037)
- Added `rustdoc_include` preprocessor. This makes it easier to include
  portions of an external Rust source file. The rest of the file is hidden,
  but the user may expand it to see the entire file, and will continue to work
  with `mdbook test`.
  [#1003](https://github.com/rust-lang-nursery/mdBook/pull/1003)
- Added Ctrl-Enter shortcut to the playpen editor to automatically run the
  sample.
  [#1066](https://github.com/rust-lang-nursery/mdBook/pull/1066)
- Added `output.html.playpen.copyable` configuration option to disable
  the copy button.
  [#1050](https://github.com/rust-lang-nursery/mdBook/pull/1050)
- Added ability to dynamically expand and fold sections within the sidebar.
  See the `output.html.fold` configuration to enable this feature.
  [#1027](https://github.com/rust-lang-nursery/mdBook/pull/1027)

### Changed
- Use standard `scrollbar-color` CSS along with webkit extension
  [#816](https://github.com/rust-lang-nursery/mdBook/pull/816)
- The renderer build directory is no longer deleted before the renderer is
  run. This allows a backend to cache results between runs.
  [#985](https://github.com/rust-lang-nursery/mdBook/pull/985)
- Next/prev links now highlight on hover to indicate it is clickable.
  [#994](https://github.com/rust-lang-nursery/mdBook/pull/994)
- Increase padding of table headers.
  [#824](https://github.com/rust-lang-nursery/mdBook/pull/824)
- Errors in `[output.html]` config are no longer ignored.
  [#1033](https://github.com/rust-lang-nursery/mdBook/pull/1033)
- Updated highlight.js for syntax highlighting updates (primarily to add
  async/await to Rust highlighting).
  [#1041](https://github.com/rust-lang-nursery/mdBook/pull/1041)
- Raised minimum supported rust version to 1.35.
  [#1003](https://github.com/rust-lang-nursery/mdBook/pull/1003)
- Hidden code lines are no longer dynamically removed via JavaScript, but
  instead managed with CSS.
  [#846](https://github.com/rust-lang-nursery/mdBook/pull/846)
  [#1065](https://github.com/rust-lang-nursery/mdBook/pull/1065)
- Changed the default font set for the ACE editor, giving preference to
  "Source Code Pro".
  [#1062](https://github.com/rust-lang-nursery/mdBook/pull/1062)
- Windows 32-bit releases are no longer published.
  [#1071](https://github.com/rust-lang-nursery/mdBook/pull/1071)

### Fixed
- Fixed sidebar auto-scrolling.
  [#1052](https://github.com/rust-lang-nursery/mdBook/pull/1052)
- Fixed error message when running `clean` multiple times.
  [#1055](https://github.com/rust-lang-nursery/mdBook/pull/1055)
- Actually fix the "next" link on index.html. The previous fix didn't work.
  [#1005](https://github.com/rust-lang-nursery/mdBook/pull/1005)
- Stop using `inline-block` for `inline code`, fixing selection highlighting
  and some rendering issues.
  [#1058](https://github.com/rust-lang-nursery/mdBook/pull/1058)
- Fix header auto-hide on browsers with momentum scrolling that allows
  negative `scrollTop`.
  [#1070](https://github.com/rust-lang-nursery/mdBook/pull/1070)

## mdBook 0.3.1
[69a08ef...9cd47eb](https://github.com/rust-lang-nursery/mdBook/compare/69a08ef...9cd47eb)

### Added
- 🔥 Added ability to include files using anchor points instead of line numbers.
  [#851](https://github.com/rust-lang-nursery/mdBook/pull/851)
- Added `language` configuration value to set the language of the book, which
  will affect things like the `<html lang="en">` tag.
  [#941](https://github.com/rust-lang-nursery/mdBook/pull/941)

### Changed
- Updated to handlebars 2.0.
  [#977](https://github.com/rust-lang-nursery/mdBook/pull/977)

### Fixed
- Fixed memory leak warning.
  [#967](https://github.com/rust-lang-nursery/mdBook/pull/967)
- Fix more print.html links.
  [#963](https://github.com/rust-lang-nursery/mdBook/pull/963)
- Fixed crash on some unicode input.
  [#978](https://github.com/rust-lang-nursery/mdBook/pull/978)

## mdBook 0.3.0
[6cbc41d...69a08ef](https://github.com/rust-lang-nursery/mdBook/compare/6cbc41d...69a08ef)

### Added
- Added ability to resize the sidebar.
  [#849](https://github.com/rust-lang-nursery/mdBook/pull/849)
- Added `load_with_config_and_summary` function to `MDBook` to be able to
  build a book with a custom `Summary`.
  [#883](https://github.com/rust-lang-nursery/mdBook/pull/883)
- Set `noindex` on `print.html` page to prevent robots from indexing it.
  [#844](https://github.com/rust-lang-nursery/mdBook/pull/844)
- Added support for ~~strikethrough~~ and GitHub-style tasklists.
  [#952](https://github.com/rust-lang-nursery/mdBook/pull/952)

### Changed
- Command-line help output is now colored.
  [#861](https://github.com/rust-lang-nursery/mdBook/pull/861)
- The build directory is now deleted before rendering starts, instead of after
  if finishes.
  [#878](https://github.com/rust-lang-nursery/mdBook/pull/878)
- Removed dependency on `same-file` crate.
  [#903](https://github.com/rust-lang-nursery/mdBook/pull/903)
- 💥 Renamed `with_preprecessor` to `with_preprocessor`.
  [#906](https://github.com/rust-lang-nursery/mdBook/pull/906)
- Updated ACE editor to 1.4.4, should remove a JavaScript console warning.
  [#935](https://github.com/rust-lang-nursery/mdBook/pull/935)
- Dependencies have been updated.
  [#934](https://github.com/rust-lang-nursery/mdBook/pull/934)
  [#945](https://github.com/rust-lang-nursery/mdBook/pull/945)
- Highlight.js has been updated. This fixes some TOML highlighting, and adds
  Julia support.
  [#942](https://github.com/rust-lang-nursery/mdBook/pull/942)
- 🔥 Updated to pulldown-cmark 0.5. This may have significant changes to the
  formatting of existing books, as the newer version has more accurate
  interpretation of the CommonMark spec and a large number of bug fixes and
  changes.
  [#898](https://github.com/rust-lang-nursery/mdBook/pull/898)
- The `diff` language should now highlight correctly.
  [#943](https://github.com/rust-lang-nursery/mdBook/pull/943)
- Make the blank region of a header not clickable.
  [#948](https://github.com/rust-lang-nursery/mdBook/pull/948)
- Rustdoc tests now use the preprocessed content instead of the raw,
  unpreprocessed content.
  [#891](https://github.com/rust-lang-nursery/mdBook/pull/891)

### Fixed
- Fixed file change detection so that `mdbook serve` only reloads once when
  multiple files are changed at once.
  [#870](https://github.com/rust-lang-nursery/mdBook/pull/870)
- Fixed on-hover color highlighting for links in sidebar.
  [#834](https://github.com/rust-lang-nursery/mdBook/pull/834)
- Fixed loss of focus when clicking the "Copy" button in code blocks.
  [#867](https://github.com/rust-lang-nursery/mdBook/pull/867)
- Fixed incorrectly stripping the path for `additional-js` files.
  [#796](https://github.com/rust-lang-nursery/mdBook/pull/796)
- Fixed color of `code spans` that are links.
  [#905](https://github.com/rust-lang-nursery/mdBook/pull/905)
- Fixed "next" navigation on index.html.
  [#916](https://github.com/rust-lang-nursery/mdBook/pull/916)
- Fixed keyboard chapter navigation for `file` urls.
  [#915](https://github.com/rust-lang-nursery/mdBook/pull/915)
- Fixed bad wrapping for inline code on some browsers.
  [#818](https://github.com/rust-lang-nursery/mdBook/pull/818)
- Properly load an existing `SUMMARY.md` in `mdbook init`.
  [#841](https://github.com/rust-lang-nursery/mdBook/pull/841)
- Fixed some broken links in `print.html`.
  [#871](https://github.com/rust-lang-nursery/mdBook/pull/871)
- The Rust Playground link now supports the 2018 edition.
  [#946](https://github.com/rust-lang-nursery/mdBook/pull/946)

## mdBook 0.2.3 (2018-01-18)
[2c20c99...6cbc41d](https://github.com/rust-lang-nursery/mdBook/compare/2c20c99...6cbc41d)

### Added
- Added an optional button to the top of the page which will link to a git
  repository. Use the `git-repository-url` and `git-repository-icon` options
  in the `[output.html]` section to enable it and set its appearance.
  [#802](https://github.com/rust-lang-nursery/mdBook/pull/802)
- Added a `default-theme` option to the `[output.html]` section.
  [#804](https://github.com/rust-lang-nursery/mdBook/pull/804)

### Changed
- 💥 Header ID anchors no longer add an arbitrary `a` character for headers
  that start with a non-ascii-alphabetic character.
  [#788](https://github.com/rust-lang-nursery/mdBook/pull/788)

### Fixed
- Fix websocket hostname usage
  [#865](https://github.com/rust-lang-nursery/mdBook/pull/865)
- Fixing links in print.html
  [#866](https://github.com/rust-lang-nursery/mdBook/pull/866)

## mdBook 0.2.2 (2018-10-19)
[7e2e095...2c20c99](https://github.com/rust-lang-nursery/mdBook/compare/7e2e095...2c20c99)

### Added
- 🎉 Process-based custom preprocessors. See [the
  docs](https://rust-lang-nursery.github.io/mdBook/for_developers/preprocessors.html)
  for more.
  [#792](https://github.com/rust-lang-nursery/mdBook/pull/792)

- 🎉 Configurable preprocessors.

  Added `build.use-default-preprocessors` boolean TOML key to allow disabling
  the built-in `links` and `index` preprocessors.

  Added `[preprocessor]` TOML tables to configure each preprocessor.

  Specifying `[preprocessor.links]` or `[preprocessor.index]` will enable the
  respective built-in preprocessor if `build.use-default-preprocessors` is
  `false`.

  Added `fn supports_renderer(&self, renderer: &str) -> bool` to the
  `Preprocessor` trait to specify if the preprocessor supports the given
  renderer. The default implementation always returns `true`.

  `Preprocessor::run` now takes a book by value instead of a mutable
  reference. It should return a `Book` value with the intended modifications.

  Added `PreprocessorContext::renderer` to indicate the renderer being used.

  [#658](https://github.com/rust-lang-nursery/mdBook/pull/658)
  [#787](https://github.com/rust-lang-nursery/mdBook/pull/787)

### Fixed
- Fix paths to additional CSS and JavaScript files
  [#777](https://github.com/rust-lang-nursery/mdBook/pull/777)
- Ensure section numbers are correctly incremented after a horizontal
  separator
  [#790](https://github.com/rust-lang-nursery/mdBook/pull/790)

## mdBook 0.2.1 (2018-08-22)
[91ffca1...7e2e095](https://github.com/rust-lang-nursery/mdBook/compare/91ffca1...7e2e095)

### Changed
- Update to handlebars-rs 1.0
  [#761](https://github.com/rust-lang-nursery/mdBook/pull/761)

### Fixed
- Fix table colors, broken by Stylus -> CSS transition
  [#765](https://github.com/rust-lang-nursery/mdBook/pull/765)

## mdBook 0.2.0 (2018-08-02)

### Changed
- 💥 This release changes how links are handled in mdBook. Previously, relative
  links were interpreted relative to the book's root. In `0.2.0`+ links are
  relative to the page they are in, and use the `.md` extension. This has [several
  advantages](https://github.com/rust-lang-nursery/mdBook/pull/603#issue-166701447),
  such as making links work in other markdown viewers like GitHub. You will
  likely have to change links in your book to accommodate this change. For
  example, a book with this layout:

  ```
  chapter_1/
      section_1.md
      section_2.md
  SUMMARY.md
  ```

  Previously a link in `section_1.md` to `section_2.md` would look like this:
  ```markdown
  [section_2](chapter_1/section_2.html)
  ```

  Now it must be changed to this:
  ```markdown
  [section_2](section_2.md)
  ```

- 💥 `mdbook test --library-path` now accepts a comma-delimited list of
  arguments rather than taking all following arguments. This makes it easier
  to handle the trailing book directory argument without always needing to put
  ` -- ` before it. Multiple instances of the option continue to be accepted:
  `mdbook test -L foo -L bar`.

- 💥 `mdbook serve` has some of its options renamed for clarity. See `mdbook
  help serve` for details.

- Embedded rust playpens now use the "stable" playground API.
  [#754](https://github.com/rust-lang-nursery/mdBook/pull/754)

### Fixed
- Escaped includes (`\{{#include file.rs}}`) will now render correctly.
  [f30ce01](https://github.com/rust-lang-nursery/mdBook/commit/f30ce0184d71e342141145472bf816419d30a2c5)
- `index.html` will now render correctly when the book's first section is
  inside a subdirectory.
  [#756](https://github.com/rust-lang-nursery/mdBook/pull/756)