Provide access to the list delimiter (#275)

* Provide access to the list delimiter

* Fix test

.github/workflows/swiftlint.yml

@@ -0,0 +1,17 @@
+name: SwiftLint
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/swiftlint.yml'
+      - '.swiftlint.yml'
+      - '**/*.swift'
+
+jobs:
+  SwiftLint:
+      runs-on: ubuntu-latest
+      steps:
+        - uses: actions/checkout@v1
+        - name: GitHub Action for SwiftLint
+          uses: norio-nomura/action-swiftlint@3.2.1
+

.gitignore

@@ -4,7 +4,6 @@ Pods/
 xcuserdata
 
 # additional ignores that will save us time
-build/
 *.pbxuser
 !default.pbxuser
 *.mode1v3

.slather.yml

@@ -1,5 +0,0 @@
-coverage_service: coveralls
-xcodeproj: Down.xcodeproj
-source_directory: Source
-ignore: 
-  - Source/cmark/*

.swift-version

@@ -1 +0,0 @@
-5.0

.swiftlint.yml

@@ -0,0 +1,10 @@
+included:
+  - Sources/Down
+  - Tests
+
+large_tuple:
+  warning: 3
+  error: 4
+
+cyclomatic_complexity:
+  ignores_case_statements: true

.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

.travis.yml

@@ -1,12 +1,12 @@
-osx_image: xcode10.2
+osx_image: xcode12.2
 language: objective-c
 before_install:
   - set -o pipefail
-  - gem install xcpretty slather -N
-  - xcrun simctl boot "iPhone 7" || echo "(Pre)Launched the simulator."
+  - xcrun simctl boot "iPhone 12" || echo "(Pre)Launched the simulator."
 script:
-  - travis_retry xcodebuild -project Down.xcodeproj -scheme "Down" -destination "platform=iOS Simulator,name=iPhone 7" -enableCodeCoverage YES ONLY_ACTIVE_ARCH=YES test | xcpretty -c
-  - travis_retry xcodebuild -project Down.xcodeproj -scheme "Down" -sdk macosx -destination 'platform=OS X,arch=x86_64' -enableCodeCoverage YES test | xcpretty -c
-  - travis_retry xcodebuild -project Down.xcodeproj -scheme "Down" -sdk appletvsimulator -destination 'platform=tvOS Simulator,name=Apple TV' -enableCodeCoverage YES test | xcpretty -c
-after_success:
-  - slather coverage --ignore "../**/*/Xcode*" --ignore "Source/cmark/*" --scheme "Down" Down.xcodeproj
+  - travis_retry xcodebuild -project Down.xcodeproj -scheme "Down" -sdk iphonesimulator -destination "platform=iOS Simulator,OS=14.2,name=iPhone 12" -enableCodeCoverage YES ONLY_ACTIVE_ARCH=YES -quiet test
+  - bash <(curl -s https://codecov.io/bash)
+  - travis_retry xcodebuild -project Down.xcodeproj -scheme "Down" -sdk macosx -destination 'platform=OS X,arch=x86_64' -enableCodeCoverage YES -quiet test
+  - bash <(curl -s https://codecov.io/bash) 
+  - travis_retry xcodebuild -project Down.xcodeproj -scheme "Down" -sdk appletvsimulator -destination 'platform=tvOS Simulator,name=Apple TV' -enableCodeCoverage YES -quiet test
+  - bash <(curl -s https://codecov.io/bash)

CHANGELOG.md

@@ -1,395 +1,611 @@
-# Change Log
+# Changelog
 
-## [v0.8.4](https://github.com/iwasrobbed/Down/tree/v0.8.4) (2019-06-04)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.8.3...v0.8.4)
+## [v0.11.0](https://github.com/johnxnguyen/Down/tree/v0.11.0) (2021-05-04)
 
-**Closed issues:**
-
-- \[Carthage\] Missing required module 'libcmark' [\#120](https://github.com/iwasrobbed/Down/issues/120)
-
-**Merged pull requests:**
-
-- Add Swift Package Manager support [\#150](https://github.com/iwasrobbed/Down/pull/150) ([aasimk2000](https://github.com/aasimk2000))
-- \[AST\] Replace line separator with paragraph separator. [\#149](https://github.com/iwasrobbed/Down/pull/149) ([fgulan](https://github.com/fgulan))
-
-## [v0.8.3](https://github.com/iwasrobbed/Down/tree/v0.8.3) (2019-05-15)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.8.2...v0.8.3)
-
-**Closed issues:**
-
-- Pass DownOptions to DownView [\#147](https://github.com/iwasrobbed/Down/issues/147)
-
-**Merged pull requests:**
-
-- Feature - pass DownOptions to init and update [\#148](https://github.com/iwasrobbed/Down/pull/148) ([ladislas](https://github.com/ladislas))
-
-## [v0.8.2](https://github.com/iwasrobbed/Down/tree/v0.8.2) (2019-05-10)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.8.1...v0.8.2)
-
-**Merged pull requests:**
-
-- Mark as safe for app extension use. [\#146](https://github.com/iwasrobbed/Down/pull/146) ([sgoodwin](https://github.com/sgoodwin))
-
-## [v0.8.1](https://github.com/iwasrobbed/Down/tree/v0.8.1) (2019-04-26)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.8.0...v0.8.1)
-
-**Merged pull requests:**
-
-- \[Swift\] Update to Swift 5.0 [\#145](https://github.com/iwasrobbed/Down/pull/145) ([iwasrobbed](https://github.com/iwasrobbed))
-
-## [v0.8.0](https://github.com/iwasrobbed/Down/tree/v0.8.0) (2019-04-24)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.7.0...v0.8.0)
-
-**Closed issues:**
-
-- 0.7.0 problems with NSAttributedString.Key [\#139](https://github.com/iwasrobbed/Down/issues/139)
-
-**Merged pull requests:**
-
-- \[Down\] Add new `unsafe` option [\#143](https://github.com/iwasrobbed/Down/pull/143) ([iwasrobbed](https://github.com/iwasrobbed))
-- Bump cmark to 0.29.0 [\#142](https://github.com/iwasrobbed/Down/pull/142) ([larryonoff](https://github.com/larryonoff))
-
-## [v0.7.0](https://github.com/iwasrobbed/Down/tree/v0.7.0) (2019-04-24)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.6...v0.7.0)
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.10.0...v0.11.0)
 
 **Implemented enhancements:**
 
-- \[Documentation\] AST API [\#134](https://github.com/iwasrobbed/Down/issues/134)
-- \[Attributed Strings\] Line spacing more than expected [\#121](https://github.com/iwasrobbed/Down/issues/121)
-- \[Down\] Rendering to attributed string is really slow, requires main thread [\#100](https://github.com/iwasrobbed/Down/issues/100)
-
-**Merged pull requests:**
-
-- Set Swift version 4.0 in podspec [\#140](https://github.com/iwasrobbed/Down/pull/140) ([larryonoff](https://github.com/larryonoff))
-- \[Cleanup\] Comment docs, example apps, and whitespace [\#136](https://github.com/iwasrobbed/Down/pull/136) ([iwasrobbed](https://github.com/iwasrobbed))
-- \[Feature\] Create API for parsing to AST and NSAttributedString [\#132](https://github.com/iwasrobbed/Down/pull/132) ([johnxnguyen](https://github.com/johnxnguyen))
-
-## [v0.6.6](https://github.com/iwasrobbed/Down/tree/v0.6.6) (2019-04-11)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.5...v0.6.6)
+- \[CodeCoverage\] Improve accuracy for combined code coverage reporting [\#205](https://github.com/johnxnguyen/Down/issues/205)
 
 **Closed issues:**
 
-- Swift 4/5 compatibility [\#131](https://github.com/iwasrobbed/Down/issues/131)
+- DownStyler not included when installed via CocoaPods [\#254](https://github.com/johnxnguyen/Down/issues/254)
+- \[Commonmark\] Strikethrough not working / not supported [\#253](https://github.com/johnxnguyen/Down/issues/253)
+- \[Attributed Strings\] Unordered list items with a single line appear further indented than those with multiple lines when using a custom font [\#246](https://github.com/johnxnguyen/Down/issues/246)
 
 **Merged pull requests:**
 
-- Wrap openURL so that Down compiles in app extensions [\#133](https://github.com/iwasrobbed/Down/pull/133) ([nheagy](https://github.com/nheagy))
+- \[Feature\] Custom list prefixes for AttributedStringVisitor [\#255](https://github.com/johnxnguyen/Down/pull/255) ([dloic](https://github.com/dloic))
+- \[Chore\] Add SwiftLint [\#252](https://github.com/johnxnguyen/Down/pull/252) ([johnxnguyen](https://github.com/johnxnguyen))
+- \[Chore\] Fix codecov report [\#251](https://github.com/johnxnguyen/Down/pull/251) ([johnxnguyen](https://github.com/johnxnguyen))
 
-## [v0.6.5](https://github.com/iwasrobbed/Down/tree/v0.6.5) (2019-04-02)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.4...v0.6.5)
+## [v0.10.0](https://github.com/johnxnguyen/Down/tree/v0.10.0) (2021-02-28)
 
-**Merged pull requests:**
-
-- Fix Xcode 10.2 warnings [\#130](https://github.com/iwasrobbed/Down/pull/130) ([mdiep](https://github.com/mdiep))
-
-## [v0.6.4](https://github.com/iwasrobbed/Down/tree/v0.6.4) (2019-03-30)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.3...v0.6.4)
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.9.5...v0.10.0)
 
 **Closed issues:**
 
-- Support SwiftPM [\#128](https://github.com/iwasrobbed/Down/issues/128)
-- \[DownView\] Load multiple .md files \(link support\) [\#68](https://github.com/iwasrobbed/Down/issues/68)
+- Does not build in 12.5 [\#244](https://github.com/johnxnguyen/Down/issues/244)
+- \[Crash\] Missing resource bundle when using SPM [\#243](https://github.com/johnxnguyen/Down/issues/243)
 
 **Merged pull requests:**
 
-- Fix Swift module errors when used alongside Firestore [\#125](https://github.com/iwasrobbed/Down/pull/125) ([vzsg](https://github.com/vzsg))
+- \[Improvement\] Expose DownTextView's designated initializer [\#250](https://github.com/johnxnguyen/Down/pull/250) ([max-potapov](https://github.com/max-potapov))
+- \[Chore\] Add arm64 as valid arch when building for simulator on M1 macs [\#249](https://github.com/johnxnguyen/Down/pull/249) ([michaelknoch](https://github.com/michaelknoch))
+- \[Chore\] Reorganize project structure for SPM [\#248](https://github.com/johnxnguyen/Down/pull/248) ([johnxnguyen](https://github.com/johnxnguyen))
+- \[Chore\] Use SPM to manage snapshot testing dependency [\#247](https://github.com/johnxnguyen/Down/pull/247) ([johnxnguyen](https://github.com/johnxnguyen))
 
-## [v0.6.3](https://github.com/iwasrobbed/Down/tree/v0.6.3) (2019-03-27)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.2...v0.6.3)
+## [v0.9.5](https://github.com/johnxnguyen/Down/tree/v0.9.5) (2021-02-12)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.9.4...v0.9.5)
+
+**Closed issues:**
+
+- Namespacing issues with Down "Node" type [\#242](https://github.com/johnxnguyen/Down/issues/242)
+- GitHub actions build failure: `small method list` [\#238](https://github.com/johnxnguyen/Down/issues/238)
+
+**Merged pull requests:**
+
+- \[Fix\] Compilation failure with Xcode 12.5 and SPM [\#245](https://github.com/johnxnguyen/Down/pull/245) ([claurel](https://github.com/claurel))
+- \[Chore\] Update readme [\#237](https://github.com/johnxnguyen/Down/pull/237) ([johnxnguyen](https://github.com/johnxnguyen))
+
+## [v0.9.4](https://github.com/johnxnguyen/Down/tree/v0.9.4) (2020-10-21)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.9.3...v0.9.4)
 
 **Implemented enhancements:**
 
-- \[DownView\] Doesn't reflow text on orientation change [\#111](https://github.com/iwasrobbed/Down/issues/111)
+- Create custom sequence to access child nodes [\#228](https://github.com/johnxnguyen/Down/pull/228) ([5sw](https://github.com/5sw))
+
+**Closed issues:**
+
+- DownStylerConfiguration Link Color Not Working [\#232](https://github.com/johnxnguyen/Down/issues/232)
+- SwiftUI support [\#231](https://github.com/johnxnguyen/Down/issues/231)
+- How to pre-calculate height needed for attributed string when using DownLayoutManager [\#226](https://github.com/johnxnguyen/Down/issues/226)
+- How i can render both markdown and Latex  ? [\#221](https://github.com/johnxnguyen/Down/issues/221)
+- Emphasis + Strong [\#220](https://github.com/johnxnguyen/Down/issues/220)
+- \[StackOverflow\] Creating a new Visitor leads to wrapping value error [\#218](https://github.com/johnxnguyen/Down/issues/218)
+- 0.9.0/0.9.1 don't build with Swift 5.0.x [\#217](https://github.com/johnxnguyen/Down/issues/217)
+- Unable to build Swift package in Xcode 11.4.1 [\#209](https://github.com/johnxnguyen/Down/issues/209)
+- \[Feature\] Add support for Mac Catalyst [\#208](https://github.com/johnxnguyen/Down/issues/208)
+
+**Merged pull requests:**
+
+- \[Fix\] DownTextView renders incorrect link color [\#233](https://github.com/johnxnguyen/Down/pull/233) ([johnxnguyen](https://github.com/johnxnguyen))
+- Added instructions for using the Swift Package Manager [\#230](https://github.com/johnxnguyen/Down/pull/230) ([klm1](https://github.com/klm1))
+- Use case let as instead of case is and force casting later. [\#227](https://github.com/johnxnguyen/Down/pull/227) ([5sw](https://github.com/5sw))
+- Add macOS arm64 platform [\#224](https://github.com/johnxnguyen/Down/pull/224) ([jasminlapalme](https://github.com/jasminlapalme))
+
+## [v0.9.3](https://github.com/johnxnguyen/Down/tree/v0.9.3) (2020-06-12)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.9.2...v0.9.3)
+
+**Closed issues:**
+
+- Line breaks between list items are not parsed correctly [\#214](https://github.com/johnxnguyen/Down/issues/214)
+- Can't build with copied sources [\#211](https://github.com/johnxnguyen/Down/issues/211)
+- hard blank line insertion after list [\#210](https://github.com/johnxnguyen/Down/issues/210)
+- Cocoapod version 0.9.2 not available. [\#206](https://github.com/johnxnguyen/Down/issues/206)
+- \[Feature\] Local images not accessible from WKWebView [\#198](https://github.com/johnxnguyen/Down/issues/198)
+
+**Merged pull requests:**
+
+- \[Chore\] Bump swift snapshot testing to 1.7.2 [\#216](https://github.com/johnxnguyen/Down/pull/216) ([johnxnguyen](https://github.com/johnxnguyen))
+- Add tightness property to List node [\#215](https://github.com/johnxnguyen/Down/pull/215) ([johnxnguyen](https://github.com/johnxnguyen))
+- Add styling options for level 4 to 6 headings [\#207](https://github.com/johnxnguyen/Down/pull/207) ([mathebox](https://github.com/mathebox))
+- \[DownView\] Add parameter so bundle is writable [\#200](https://github.com/johnxnguyen/Down/pull/200) ([brunnobga](https://github.com/brunnobga))
+
+## [v0.9.2](https://github.com/johnxnguyen/Down/tree/v0.9.2) (2020-03-03)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.9.1...v0.9.2)
+
+**Closed issues:**
+
+- Update Framework with Swift 5.1 [\#178](https://github.com/johnxnguyen/Down/issues/178)
+
+**Merged pull requests:**
+
+- Swift 5.1 Support [\#204](https://github.com/johnxnguyen/Down/pull/204) ([ghost](https://github.com/ghost))
+- Resolves Swift Package Manager issue related to swift-snapshot-testing [\#203](https://github.com/johnxnguyen/Down/pull/203) ([ghost](https://github.com/ghost))
+
+## [v0.9.1](https://github.com/johnxnguyen/Down/tree/v0.9.1) (2020-02-28)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.9.0...v0.9.1)
+
+**Implemented enhancements:**
+
+- Added Linux support. [\#172](https://github.com/johnxnguyen/Down/pull/172) ([vgorloff](https://github.com/vgorloff))
+
+**Closed issues:**
+
+- SwiftPM : Resolve apparent version incompatibility with swift-snapshot-testing [\#202](https://github.com/johnxnguyen/Down/issues/202)
+- Release fixes made after 0.9.0 [\#201](https://github.com/johnxnguyen/Down/issues/201)
+- Swift UI Support [\#199](https://github.com/johnxnguyen/Down/issues/199)
+- 'BaseNode' initializer is inaccessible due to 'internal' protection level [\#196](https://github.com/johnxnguyen/Down/issues/196)
+- Any emoji support? [\#195](https://github.com/johnxnguyen/Down/issues/195)
+- Swift Packege maneger? [\#194](https://github.com/johnxnguyen/Down/issues/194)
+- Regression: single newline syntax not working \(any variety\) [\#191](https://github.com/johnxnguyen/Down/issues/191)
+- Down cannot convert this markdown string to html [\#190](https://github.com/johnxnguyen/Down/issues/190)
+- App using xcframework with Down pod dependency causes crash [\#187](https://github.com/johnxnguyen/Down/issues/187)
+- Is the text supposed to be rendering this large? [\#186](https://github.com/johnxnguyen/Down/issues/186)
+- Issue with markdown render/convert to attribute string on macOS latest version [\#185](https://github.com/johnxnguyen/Down/issues/185)
+- Table are not render [\#183](https://github.com/johnxnguyen/Down/issues/183)
+- How to change text color? [\#182](https://github.com/johnxnguyen/Down/issues/182)
+- incorrect parse for string that is a mixture of markdown and html [\#180](https://github.com/johnxnguyen/Down/issues/180)
+
+**Merged pull requests:**
+
+- Improve configurability of DownStyler [\#188](https://github.com/johnxnguyen/Down/pull/188) ([mgacy](https://github.com/mgacy))
+- Make color & font collection initializers public [\#184](https://github.com/johnxnguyen/Down/pull/184) ([johnxnguyen](https://github.com/johnxnguyen))
+
+## [v0.9.0](https://github.com/johnxnguyen/Down/tree/v0.9.0) (2019-10-06)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.6...v0.9.0)
+
+**Closed issues:**
+
+- Please add Styler example in the documentation [\#179](https://github.com/johnxnguyen/Down/issues/179)
+- \[Attributed Strings\] Can the `Styler` know which list item marker was parsed? [\#176](https://github.com/johnxnguyen/Down/issues/176)
+- Error: 'cmark\_export.h' file not found with \<angled\> include; use "quotes" instead [\#175](https://github.com/johnxnguyen/Down/issues/175)
+- GIFF Support [\#174](https://github.com/johnxnguyen/Down/issues/174)
+- Help: Set Default Font [\#168](https://github.com/johnxnguyen/Down/issues/168)
+- \[Testing\] Adding a snapshot testing framework [\#165](https://github.com/johnxnguyen/Down/issues/165)
+- Adding a snapshot test framework [\#164](https://github.com/johnxnguyen/Down/issues/164)
+- XCode Beta 4 Build Error [\#162](https://github.com/johnxnguyen/Down/issues/162)
+- \[Attributed Strings\] Create default `Styler` for attributed string rendering [\#138](https://github.com/johnxnguyen/Down/issues/138)
+- \[Help out\] Collaborators wanted! Help us improve Down [\#105](https://github.com/johnxnguyen/Down/issues/105)
+- \[DownView\] Support for internal links? [\#93](https://github.com/johnxnguyen/Down/issues/93)
+
+**Merged pull requests:**
+
+- \[Feature\] Create default `Styler` for attributed string rendering [\#177](https://github.com/johnxnguyen/Down/pull/177) ([johnxnguyen](https://github.com/johnxnguyen))
+- Resolve xcode11beta4 issue. [\#170](https://github.com/johnxnguyen/Down/pull/170) ([ykphuah](https://github.com/ykphuah))
+- Minor documentation fix [\#169](https://github.com/johnxnguyen/Down/pull/169) ([nighthawk](https://github.com/nighthawk))
+
+## [v0.8.6](https://github.com/johnxnguyen/Down/tree/v0.8.6) (2019-07-11)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.5...v0.8.6)
+
+**Closed issues:**
+
+- Update Options to support Unsafe Rendering [\#159](https://github.com/johnxnguyen/Down/issues/159)
+- .toAttributedString stylesheet parameter [\#158](https://github.com/johnxnguyen/Down/issues/158)
+
+**Merged pull requests:**
+
+- Updates for unsafe option [\#160](https://github.com/johnxnguyen/Down/pull/160) ([hbowie](https://github.com/hbowie))
+- Fix permissions error on Catalina beta 2 [\#156](https://github.com/johnxnguyen/Down/pull/156) ([mdiep](https://github.com/mdiep))
+
+## [v0.8.5](https://github.com/johnxnguyen/Down/tree/v0.8.5) (2019-06-13)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.4...v0.8.5)
+
+**Closed issues:**
+
+- DebugVisitor is missing a public initializer [\#152](https://github.com/johnxnguyen/Down/issues/152)
+- Can't build with Swift 5.1 with SwiftPM [\#151](https://github.com/johnxnguyen/Down/issues/151)
+
+**Merged pull requests:**
+
+- \[SPM\] Fixes error with missing headers [\#154](https://github.com/johnxnguyen/Down/pull/154) ([aasimk2000](https://github.com/aasimk2000))
+- Create Public Initializer for DebugVisitor [\#153](https://github.com/johnxnguyen/Down/pull/153) ([mfcollins3](https://github.com/mfcollins3))
+
+## [v0.8.4](https://github.com/johnxnguyen/Down/tree/v0.8.4) (2019-06-04)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.3...v0.8.4)
+
+**Closed issues:**
+
+- \[Carthage\] Missing required module 'libcmark' [\#120](https://github.com/johnxnguyen/Down/issues/120)
+
+**Merged pull requests:**
+
+- Add Swift Package Manager support [\#150](https://github.com/johnxnguyen/Down/pull/150) ([aasimk2000](https://github.com/aasimk2000))
+- \[AST\] Replace line separator with paragraph separator. [\#149](https://github.com/johnxnguyen/Down/pull/149) ([fgulan](https://github.com/fgulan))
+
+## [v0.8.3](https://github.com/johnxnguyen/Down/tree/v0.8.3) (2019-05-15)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.2...v0.8.3)
+
+**Closed issues:**
+
+- Pass DownOptions to DownView [\#147](https://github.com/johnxnguyen/Down/issues/147)
+
+**Merged pull requests:**
+
+- Feature - pass DownOptions to init and update [\#148](https://github.com/johnxnguyen/Down/pull/148) ([ladislas](https://github.com/ladislas))
+
+## [v0.8.2](https://github.com/johnxnguyen/Down/tree/v0.8.2) (2019-05-10)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.1...v0.8.2)
+
+**Merged pull requests:**
+
+- Mark as safe for app extension use. [\#146](https://github.com/johnxnguyen/Down/pull/146) ([sgoodwin](https://github.com/sgoodwin))
+
+## [v0.8.1](https://github.com/johnxnguyen/Down/tree/v0.8.1) (2019-04-26)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.8.0...v0.8.1)
+
+**Merged pull requests:**
+
+- \[Swift\] Update to Swift 5.0 [\#145](https://github.com/johnxnguyen/Down/pull/145) ([iwasrobbed](https://github.com/iwasrobbed))
+
+## [v0.8.0](https://github.com/johnxnguyen/Down/tree/v0.8.0) (2019-04-24)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.7.0...v0.8.0)
+
+**Closed issues:**
+
+- 0.7.0 problems with NSAttributedString.Key [\#139](https://github.com/johnxnguyen/Down/issues/139)
+
+**Merged pull requests:**
+
+- \[Down\] Add new `unsafe` option [\#143](https://github.com/johnxnguyen/Down/pull/143) ([iwasrobbed](https://github.com/iwasrobbed))
+- Bump cmark to 0.29.0 [\#142](https://github.com/johnxnguyen/Down/pull/142) ([larryonoff](https://github.com/larryonoff))
+
+## [v0.7.0](https://github.com/johnxnguyen/Down/tree/v0.7.0) (2019-04-24)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.6...v0.7.0)
+
+**Implemented enhancements:**
+
+- \[Documentation\] AST API [\#134](https://github.com/johnxnguyen/Down/issues/134)
+- \[Attributed Strings\] Line spacing more than expected [\#121](https://github.com/johnxnguyen/Down/issues/121)
+- \[Down\] Rendering to attributed string is really slow, requires main thread [\#100](https://github.com/johnxnguyen/Down/issues/100)
+
+**Merged pull requests:**
+
+- Set Swift version 4.0 in podspec [\#140](https://github.com/johnxnguyen/Down/pull/140) ([larryonoff](https://github.com/larryonoff))
+- \[Cleanup\] Comment docs, example apps, and whitespace [\#136](https://github.com/johnxnguyen/Down/pull/136) ([iwasrobbed](https://github.com/iwasrobbed))
+- \[Feature\] Create API for parsing to AST and NSAttributedString [\#132](https://github.com/johnxnguyen/Down/pull/132) ([johnxnguyen](https://github.com/johnxnguyen))
+
+## [v0.6.6](https://github.com/johnxnguyen/Down/tree/v0.6.6) (2019-04-11)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.5...v0.6.6)
+
+**Closed issues:**
+
+- Swift 4/5 compatibility [\#131](https://github.com/johnxnguyen/Down/issues/131)
+
+**Merged pull requests:**
+
+- Wrap openURL so that Down compiles in app extensions [\#133](https://github.com/johnxnguyen/Down/pull/133) ([nheagy](https://github.com/nheagy))
+
+## [v0.6.5](https://github.com/johnxnguyen/Down/tree/v0.6.5) (2019-04-02)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.4...v0.6.5)
+
+**Merged pull requests:**
+
+- Fix Xcode 10.2 warnings [\#130](https://github.com/johnxnguyen/Down/pull/130) ([mdiep](https://github.com/mdiep))
+
+## [v0.6.4](https://github.com/johnxnguyen/Down/tree/v0.6.4) (2019-03-30)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.3...v0.6.4)
+
+**Closed issues:**
+
+- Support SwiftPM [\#128](https://github.com/johnxnguyen/Down/issues/128)
+- \[DownView\] Load multiple .md files \(link support\) [\#68](https://github.com/johnxnguyen/Down/issues/68)
+
+**Merged pull requests:**
+
+- Fix Swift module errors when used alongside Firestore [\#125](https://github.com/johnxnguyen/Down/pull/125) ([vzsg](https://github.com/vzsg))
+
+## [v0.6.3](https://github.com/johnxnguyen/Down/tree/v0.6.3) (2019-03-27)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.2...v0.6.3)
+
+**Implemented enhancements:**
+
+- \[DownView\] Doesn't reflow text on orientation change [\#111](https://github.com/johnxnguyen/Down/issues/111)
 
 **Fixed bugs:**
 
-- Crash rendering markdown [\#126](https://github.com/iwasrobbed/Down/issues/126)
+- Crash rendering markdown [\#126](https://github.com/johnxnguyen/Down/issues/126)
 
 **Closed issues:**
 
-- Cocoapods: libcmark [\#124](https://github.com/iwasrobbed/Down/issues/124)
-- Use with storyboards [\#123](https://github.com/iwasrobbed/Down/issues/123)
-- support for audio markdown? [\#122](https://github.com/iwasrobbed/Down/issues/122)
-- \[Down\] Can't render toAttributedString while app is in background [\#116](https://github.com/iwasrobbed/Down/issues/116)
+- Cocoapods: libcmark [\#124](https://github.com/johnxnguyen/Down/issues/124)
+- Use with storyboards [\#123](https://github.com/johnxnguyen/Down/issues/123)
+- support for audio markdown? [\#122](https://github.com/johnxnguyen/Down/issues/122)
+- \[Down\] Can't render toAttributedString while app is in background [\#116](https://github.com/johnxnguyen/Down/issues/116)
 
 **Merged pull requests:**
 
-- Fix crash from missing parser.h include [\#129](https://github.com/iwasrobbed/Down/pull/129) ([phoney](https://github.com/phoney))
-- Make the DownView reflow text on device rotation [\#127](https://github.com/iwasrobbed/Down/pull/127) ([phoney](https://github.com/phoney))
+- Fix crash from missing parser.h include [\#129](https://github.com/johnxnguyen/Down/pull/129) ([phoney](https://github.com/phoney))
+- Make the DownView reflow text on device rotation [\#127](https://github.com/johnxnguyen/Down/pull/127) ([phoney](https://github.com/phoney))
 
-## [v0.6.2](https://github.com/iwasrobbed/Down/tree/v0.6.2) (2018-11-28)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.1...v0.6.2)
+## [v0.6.2](https://github.com/johnxnguyen/Down/tree/v0.6.2) (2018-11-28)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.1...v0.6.2)
 
 **Implemented enhancements:**
 
-- \[cmark\] Some characters are escaped twice [\#99](https://github.com/iwasrobbed/Down/issues/99)
+- \[cmark\] Some characters are escaped twice [\#99](https://github.com/johnxnguyen/Down/issues/99)
+
+**Merged pull requests:**
+
+- Add compiler flag to suppress implicit conversion warnings [\#118](https://github.com/johnxnguyen/Down/pull/118) ([phoney](https://github.com/phoney))
+
+## [v0.6.1](https://github.com/johnxnguyen/Down/tree/v0.6.1) (2018-11-23)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.6.0...v0.6.1)
+
+**Closed issues:**
+
+- 2 Swift Compiler Errors when installing Down on iOS [\#117](https://github.com/johnxnguyen/Down/issues/117)
+- How to update to the latest version of the cmark library [\#115](https://github.com/johnxnguyen/Down/issues/115)
+
+**Merged pull requests:**
+
+- \[travis\] Update to retry [\#114](https://github.com/johnxnguyen/Down/pull/114) ([iwasrobbed](https://github.com/iwasrobbed))
+- Fix macOS Platform, Custom URL Scheme Handler, Polish Demos. [\#110](https://github.com/johnxnguyen/Down/pull/110) ([chriszielinski](https://github.com/chriszielinski))
+
+## [v0.6.0](https://github.com/johnxnguyen/Down/tree/v0.6.0) (2018-11-10)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.5.3...v0.6.0)
+
+**Implemented enhancements:**
+
+- \[iOS 10+\] Warnings for WebKit signal service and latex.c [\#94](https://github.com/johnxnguyen/Down/issues/94)
+- Update cmark version to latest stable release [\#84](https://github.com/johnxnguyen/Down/issues/84)
+
+**Closed issues:**
+
+- HTML to Markdowndow? [\#107](https://github.com/johnxnguyen/Down/issues/107)
+- Blockquote does not work in NSAttributedString [\#106](https://github.com/johnxnguyen/Down/issues/106)
+- Support for Dynamic Type [\#90](https://github.com/johnxnguyen/Down/issues/90)
+
+**Merged pull requests:**
+
+- \[Down\] Bump to v0.6.0 [\#113](https://github.com/johnxnguyen/Down/pull/113) ([iwasrobbed](https://github.com/iwasrobbed))
+- \[cmark\] Update lib to v0.28.3 [\#112](https://github.com/johnxnguyen/Down/pull/112) ([phoney](https://github.com/phoney))
+- Update project to Xcode 10 [\#109](https://github.com/johnxnguyen/Down/pull/109) ([funkyboy](https://github.com/funkyboy))
+
+## [v0.5.3](https://github.com/johnxnguyen/Down/tree/v0.5.3) (2018-09-19)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.5.2...v0.5.3)
+
+**Implemented enhancements:**
+
+- &rdquo; not being rendered [\#95](https://github.com/johnxnguyen/Down/issues/95)
+- Update issue templates [\#101](https://github.com/johnxnguyen/Down/pull/101) ([iwasrobbed](https://github.com/iwasrobbed))
 
 **Fixed bugs:**
 
-- \\[cmark\\] Some characters are escaped twice [\#99](https://github.com/iwasrobbed/Down/issues/99)
-
-**Merged pull requests:**
-
-- Add compiler flag to suppress implicit conversion warnings [\#118](https://github.com/iwasrobbed/Down/pull/118) ([phoney](https://github.com/phoney))
-
-## [v0.6.1](https://github.com/iwasrobbed/Down/tree/v0.6.1) (2018-11-23)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.6.0...v0.6.1)
+- \[Xcode 10\] Crash in XCBuildService; need to use old build system [\#91](https://github.com/johnxnguyen/Down/issues/91)
 
 **Closed issues:**
 
-- 2 Swift Compiler Errors when installing Down on iOS [\#117](https://github.com/iwasrobbed/Down/issues/117)
-- How to update to the latest version of the cmark library [\#115](https://github.com/iwasrobbed/Down/issues/115)
+- DownView font size on iPad is huge [\#102](https://github.com/johnxnguyen/Down/issues/102)
+- Is there a way to convert NSAttributedString back to markdown? [\#98](https://github.com/johnxnguyen/Down/issues/98)
+- Back Gesture [\#96](https://github.com/johnxnguyen/Down/issues/96)
+- Access for  [\#92](https://github.com/johnxnguyen/Down/issues/92)
+- Image size NSAttributedString [\#89](https://github.com/johnxnguyen/Down/issues/89)
+- Dependency analysis warnings with Cocoapods [\#88](https://github.com/johnxnguyen/Down/issues/88)
+- WatchKit Support [\#71](https://github.com/johnxnguyen/Down/issues/71)
+- Installation via Swift Package Manager [\#61](https://github.com/johnxnguyen/Down/issues/61)
 
 **Merged pull requests:**
 
-- \[travis\] Update to retry [\#114](https://github.com/iwasrobbed/Down/pull/114) ([iwasrobbed](https://github.com/iwasrobbed))
-- Fix macOS Platform, Custom URL Scheme Handler, Polish Demos. [\#110](https://github.com/iwasrobbed/Down/pull/110) ([chriszielinski](https://github.com/chriszielinski))
+- \[Xcode 10\]\[Carthage\] Use new build system [\#104](https://github.com/johnxnguyen/Down/pull/104) ([torokzsolt](https://github.com/torokzsolt))
+- Updates the project settings to use the Legacy Build System. [\#97](https://github.com/johnxnguyen/Down/pull/97) ([pieromattos](https://github.com/pieromattos))
+- \[Release\] v0.5.2 [\#87](https://github.com/johnxnguyen/Down/pull/87) ([iwasrobbed](https://github.com/iwasrobbed))
 
-## [v0.6.0](https://github.com/iwasrobbed/Down/tree/v0.6.0) (2018-11-10)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.5.3...v0.6.0)
+## [v0.5.2](https://github.com/johnxnguyen/Down/tree/v0.5.2) (2018-05-05)
 
-**Implemented enhancements:**
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.5.1...v0.5.2)
 
-- \[iOS 10+\] Warnings for WebKit signal service and latex.c [\#94](https://github.com/iwasrobbed/Down/issues/94)
-- Update cmark version to latest stable release [\#84](https://github.com/iwasrobbed/Down/issues/84)
+**Merged pull requests:**
+
+- \[Pods\] Only include files in source\_files that can be compiled [\#86](https://github.com/johnxnguyen/Down/pull/86) ([njdehoog](https://github.com/njdehoog))
+
+## [v0.5.1](https://github.com/johnxnguyen/Down/tree/v0.5.1) (2018-03-03)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.5.0...v0.5.1)
 
 **Closed issues:**
 
-- HTML to Markdowndow? [\#107](https://github.com/iwasrobbed/Down/issues/107)
-- Blockquote does not work in NSAttributedString [\#106](https://github.com/iwasrobbed/Down/issues/106)
-- Support for Dynamic Type [\#90](https://github.com/iwasrobbed/Down/issues/90)
+- `DocumentReadingOptionKey` Error via pod [\#80](https://github.com/johnxnguyen/Down/issues/80)
 
 **Merged pull requests:**
 
-- \[Down\] Bump to v0.6.0 [\#113](https://github.com/iwasrobbed/Down/pull/113) ([iwasrobbed](https://github.com/iwasrobbed))
-- \[cmark\] Update lib to v0.28.3 [\#112](https://github.com/iwasrobbed/Down/pull/112) ([phoney](https://github.com/phoney))
-- Update project to Xcode 10 [\#109](https://github.com/iwasrobbed/Down/pull/109) ([funkyboy](https://github.com/funkyboy))
+- Add optional stylesheet argument for NSAttributedString renderer [\#79](https://github.com/johnxnguyen/Down/pull/79) ([kengruven](https://github.com/kengruven))
+- Roll up cmark's COPYING sections into the top-level LICENSE file [\#78](https://github.com/johnxnguyen/Down/pull/78) ([kengruven](https://github.com/kengruven))
+- Update supported versions in README [\#77](https://github.com/johnxnguyen/Down/pull/77) ([kengruven](https://github.com/kengruven))
 
-## [v0.5.3](https://github.com/iwasrobbed/Down/tree/v0.5.3) (2018-09-19)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.5.2...v0.5.3)
+## [v0.5.0](https://github.com/johnxnguyen/Down/tree/v0.5.0) (2018-02-24)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.4.2...v0.5.0)
 
 **Implemented enhancements:**
 
-- &rdquo; not being rendered [\#95](https://github.com/iwasrobbed/Down/issues/95)
-- Update issue templates [\#101](https://github.com/iwasrobbed/Down/pull/101) ([iwasrobbed](https://github.com/iwasrobbed))
+- Fix/update example app [\#58](https://github.com/johnxnguyen/Down/pull/58) ([iwasrobbed](https://github.com/iwasrobbed))
 
 **Fixed bugs:**
 
-- \[Xcode 10\] Crash in XCBuildService; need to use old build system [\#91](https://github.com/iwasrobbed/Down/issues/91)
+- Building for tvOS fails [\#49](https://github.com/johnxnguyen/Down/issues/49)
+- Fix Carthage builds [\#72](https://github.com/johnxnguyen/Down/pull/72) ([tonyarnold](https://github.com/tonyarnold))
 
 **Closed issues:**
 
-- DownView font size on iPad is huge [\#102](https://github.com/iwasrobbed/Down/issues/102)
-- Is there a way to convert NSAttributedString back to markdown? [\#98](https://github.com/iwasrobbed/Down/issues/98)
-- Back Gesture [\#96](https://github.com/iwasrobbed/Down/issues/96)
-- Access for  [\#92](https://github.com/iwasrobbed/Down/issues/92)
-- Image size NSAttributedString [\#89](https://github.com/iwasrobbed/Down/issues/89)
-- Dependency analysis warnings with Cocoapods [\#88](https://github.com/iwasrobbed/Down/issues/88)
-- WatchKit Support [\#71](https://github.com/iwasrobbed/Down/issues/71)
-- Installation via Swift Package Manager [\#61](https://github.com/iwasrobbed/Down/issues/61)
+- Swift 3+ convention for capitalization [\#74](https://github.com/johnxnguyen/Down/issues/74)
+- macOS 10.11 support? [\#73](https://github.com/johnxnguyen/Down/issues/73)
+- Installing with Carthage for Mac fails [\#70](https://github.com/johnxnguyen/Down/issues/70)
+- Error building/installing Down [\#69](https://github.com/johnxnguyen/Down/issues/69)
+- get heigth when add downview to other view? [\#67](https://github.com/johnxnguyen/Down/issues/67)
+- iOS8 crash [\#66](https://github.com/johnxnguyen/Down/issues/66)
+- Image caching [\#65](https://github.com/johnxnguyen/Down/issues/65)
+- Some warnings to fix [\#64](https://github.com/johnxnguyen/Down/issues/64)
+- build error [\#63](https://github.com/johnxnguyen/Down/issues/63)
+- Lists and paragraph spacing [\#62](https://github.com/johnxnguyen/Down/issues/62)
+- Converting Markdown string to HTML with emojis [\#60](https://github.com/johnxnguyen/Down/issues/60)
+- Syntax highlighting themes [\#59](https://github.com/johnxnguyen/Down/issues/59)
+- Compiling error on example project [\#57](https://github.com/johnxnguyen/Down/issues/57)
+- Compilation error using Carthage [\#54](https://github.com/johnxnguyen/Down/issues/54)
 
 **Merged pull requests:**
 
-- \[Xcode 10\]\[Carthage\] Use new build system [\#104](https://github.com/iwasrobbed/Down/pull/104) ([torokzsolt](https://github.com/torokzsolt))
-- Updates the project settings to use the Legacy Build System. [\#97](https://github.com/iwasrobbed/Down/pull/97) ([pieromattos](https://github.com/pieromattos))
-- \[Release\] v0.5.2 [\#87](https://github.com/iwasrobbed/Down/pull/87) ([iwasrobbed](https://github.com/iwasrobbed))
+- Use lower-case Swift 3 convention for DownOptions [\#76](https://github.com/johnxnguyen/Down/pull/76) ([kengruven](https://github.com/kengruven))
+- Lower MACOSX\_DEPLOYMENT\_TARGET to include El Capitan [\#75](https://github.com/johnxnguyen/Down/pull/75) ([kengruven](https://github.com/kengruven))
+- WebKit not available on watchOS. [\#56](https://github.com/johnxnguyen/Down/pull/56) ([128keaton](https://github.com/128keaton))
+- Update README.md [\#55](https://github.com/johnxnguyen/Down/pull/55) ([128keaton](https://github.com/128keaton))
+- Updated Copyright year in ReadMe file [\#53](https://github.com/johnxnguyen/Down/pull/53) ([jobinsjohn](https://github.com/jobinsjohn))
 
-## [v0.5.2](https://github.com/iwasrobbed/Down/tree/v0.5.2) (2018-05-05)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.5.1...v0.5.2)
+## [v0.4.2](https://github.com/johnxnguyen/Down/tree/v0.4.2) (2017-10-21)
 
-**Merged pull requests:**
-
-- \[Pods\] Only include files in source\_files that can be compiled [\#86](https://github.com/iwasrobbed/Down/pull/86) ([njdehoog](https://github.com/njdehoog))
-
-## [v0.5.1](https://github.com/iwasrobbed/Down/tree/v0.5.1) (2018-03-03)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.5.0...v0.5.1)
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.4.1...v0.4.2)
 
 **Closed issues:**
 
-- `DocumentReadingOptionKey` Error via pod [\#80](https://github.com/iwasrobbed/Down/issues/80)
+- Push v0.4.1 to cocoapods  [\#51](https://github.com/johnxnguyen/Down/issues/51)
 
 **Merged pull requests:**
 
-- Add optional stylesheet argument for NSAttributedString renderer [\#79](https://github.com/iwasrobbed/Down/pull/79) ([kengruven](https://github.com/kengruven))
-- Roll up cmark's COPYING sections into the top-level LICENSE file [\#78](https://github.com/iwasrobbed/Down/pull/78) ([kengruven](https://github.com/kengruven))
-- Update supported versions in README [\#77](https://github.com/iwasrobbed/Down/pull/77) ([kengruven](https://github.com/kengruven))
+- \[tvOS\] Conditionally compile DownView [\#52](https://github.com/johnxnguyen/Down/pull/52) ([iwasrobbed](https://github.com/iwasrobbed))
 
-## [v0.5.0](https://github.com/iwasrobbed/Down/tree/v0.5.0) (2018-02-24)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.4.2...v0.5.0)
+## [v0.4.1](https://github.com/johnxnguyen/Down/tree/v0.4.1) (2017-10-04)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.4.0...v0.4.1)
+
+**Closed issues:**
+
+- Carthage install fails: no such module 'libcmark' [\#43](https://github.com/johnxnguyen/Down/issues/43)
+- Xcode 8.3 warnings [\#26](https://github.com/johnxnguyen/Down/issues/26)
+
+**Merged pull requests:**
+
+- Adds filters to remove Xcode-specific warnings [\#48](https://github.com/johnxnguyen/Down/pull/48) ([128keaton](https://github.com/128keaton))
+- Fixes issue \#43 [\#47](https://github.com/johnxnguyen/Down/pull/47) ([128keaton](https://github.com/128keaton))
+- Update to Swift 4  [\#46](https://github.com/johnxnguyen/Down/pull/46) ([iwasrobbed](https://github.com/iwasrobbed))
+
+## [v0.4.0](https://github.com/johnxnguyen/Down/tree/v0.4.0) (2017-08-31)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.3.5...v0.4.0)
 
 **Implemented enhancements:**
 
-- Fix/update example app [\#58](https://github.com/iwasrobbed/Down/pull/58) ([iwasrobbed](https://github.com/iwasrobbed))
-
-**Fixed bugs:**
-
-- Building for tvOS fails [\#49](https://github.com/iwasrobbed/Down/issues/49)
-- Fix Carthage builds [\#72](https://github.com/iwasrobbed/Down/pull/72) ([tonyarnold](https://github.com/tonyarnold))
-- Fix/update example app [\#58](https://github.com/iwasrobbed/Down/pull/58) ([iwasrobbed](https://github.com/iwasrobbed))
+- Example project [\#37](https://github.com/johnxnguyen/Down/issues/37)
+- Markdown tables support [\#36](https://github.com/johnxnguyen/Down/issues/36)
 
 **Closed issues:**
 
-- Swift 3+ convention for capitalization [\#74](https://github.com/iwasrobbed/Down/issues/74)
-- macOS 10.11 support? [\#73](https://github.com/iwasrobbed/Down/issues/73)
-- Installing with Carthage for Mac fails [\#70](https://github.com/iwasrobbed/Down/issues/70)
-- Error building/installing Down [\#69](https://github.com/iwasrobbed/Down/issues/69)
-- get heigth when add downview to other view? [\#67](https://github.com/iwasrobbed/Down/issues/67)
-- iOS8 crash [\#66](https://github.com/iwasrobbed/Down/issues/66)
-- Image caching [\#65](https://github.com/iwasrobbed/Down/issues/65)
-- Some warnings to fix [\#64](https://github.com/iwasrobbed/Down/issues/64)
-- build error [\#63](https://github.com/iwasrobbed/Down/issues/63)
-- Lists and paragraph spacing [\#62](https://github.com/iwasrobbed/Down/issues/62)
-- Converting Markdown string to HTML with emojis [\#60](https://github.com/iwasrobbed/Down/issues/60)
-- Syntax highlighting themes [\#59](https://github.com/iwasrobbed/Down/issues/59)
-- Compiling error on example project [\#57](https://github.com/iwasrobbed/Down/issues/57)
-- Compilation error using Carthage [\#54](https://github.com/iwasrobbed/Down/issues/54)
+- Unable to build with Xcode 9 [\#41](https://github.com/johnxnguyen/Down/issues/41)
+- Can not load local image and link to local .md file [\#40](https://github.com/johnxnguyen/Down/issues/40)
+- Fenced code syntax highlighting [\#35](https://github.com/johnxnguyen/Down/issues/35)
+- down.toAttributedString\(\) custom text font and image size [\#33](https://github.com/johnxnguyen/Down/issues/33)
 
 **Merged pull requests:**
 
-- Use lower-case Swift 3 convention for DownOptions [\#76](https://github.com/iwasrobbed/Down/pull/76) ([kengruven](https://github.com/kengruven))
-- Lower MACOSX\_DEPLOYMENT\_TARGET to include El Capitan [\#75](https://github.com/iwasrobbed/Down/pull/75) ([kengruven](https://github.com/kengruven))
-- WebKit not available on watchOS. [\#56](https://github.com/iwasrobbed/Down/pull/56) ([128keaton](https://github.com/128keaton))
-- Update README.md [\#55](https://github.com/iwasrobbed/Down/pull/55) ([128keaton](https://github.com/128keaton))
-- Updated Copyright year in ReadMe file [\#53](https://github.com/iwasrobbed/Down/pull/53) ([jobinsjohn](https://github.com/jobinsjohn))
+- Closes “Example” Issue [\#38](https://github.com/johnxnguyen/Down/pull/38) ([128keaton](https://github.com/128keaton))
+- Prevent zoom documentation [\#34](https://github.com/johnxnguyen/Down/pull/34) ([Kumuluzz](https://github.com/Kumuluzz))
 
-## [v0.4.2](https://github.com/iwasrobbed/Down/tree/v0.4.2) (2017-10-21)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.4.1...v0.4.2)
+## [v0.3.5](https://github.com/johnxnguyen/Down/tree/v0.3.5) (2017-05-25)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.3.4...v0.3.5)
+
+**Implemented enhancements:**
+
+- Disable analysis of cmark source code [\#31](https://github.com/johnxnguyen/Down/pull/31) ([tonyarnold](https://github.com/tonyarnold))
+
+## [v0.3.4](https://github.com/johnxnguyen/Down/tree/v0.3.4) (2017-05-13)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.3.3...v0.3.4)
+
+**Merged pull requests:**
+
+- Suggested project fixes/changes [\#28](https://github.com/johnxnguyen/Down/pull/28) ([tonyarnold](https://github.com/tonyarnold))
+- Add the ability to initialise a DownView using a custom template bundle [\#27](https://github.com/johnxnguyen/Down/pull/27) ([tonyarnold](https://github.com/tonyarnold))
+
+## [v0.3.3](https://github.com/johnxnguyen/Down/tree/v0.3.3) (2017-03-09)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.3.2...v0.3.3)
+
+**Implemented enhancements:**
+
+- Add OS X support [\#6](https://github.com/johnxnguyen/Down/issues/6)
+
+**Merged pull requests:**
+
+- \#6 macOS Support [\#25](https://github.com/johnxnguyen/Down/pull/25) ([128keaton](https://github.com/128keaton))
+
+## [v0.3.2](https://github.com/johnxnguyen/Down/tree/v0.3.2) (2017-02-26)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.3.1...v0.3.2)
+
+**Implemented enhancements:**
+
+- Create changelog [\#20](https://github.com/johnxnguyen/Down/issues/20)
 
 **Closed issues:**
 
-- Push v0.4.1 to cocoapods  [\#51](https://github.com/iwasrobbed/Down/issues/51)
+- A faster substitute to NSHTMLTextDocumentType? [\#23](https://github.com/johnxnguyen/Down/issues/23)
+- How to update DownView content and keep the style? [\#19](https://github.com/johnxnguyen/Down/issues/19)
 
 **Merged pull requests:**
 
-- \[tvOS\] Conditionally compile DownView [\#52](https://github.com/iwasrobbed/Down/pull/52) ([iwasrobbed](https://github.com/iwasrobbed))
+- Add tvOS support [\#24](https://github.com/johnxnguyen/Down/pull/24) ([invliD](https://github.com/invliD))
+- v0.3.1: Add the ability to update DownView content [\#22](https://github.com/johnxnguyen/Down/pull/22) ([iwasrobbed](https://github.com/iwasrobbed))
 
-## [v0.4.1](https://github.com/iwasrobbed/Down/tree/v0.4.1) (2017-10-04)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.4.0...v0.4.1)
+## [v0.3.1](https://github.com/johnxnguyen/Down/tree/v0.3.1) (2017-02-09)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.3...v0.3.1)
 
 **Closed issues:**
 
-- Carthage install fails: no such module 'libcmark' [\#43](https://github.com/iwasrobbed/Down/issues/43)
-- Xcode 8.3 warnings [\#26](https://github.com/iwasrobbed/Down/issues/26)
+- How to keep UITextView font style [\#21](https://github.com/johnxnguyen/Down/issues/21)
+- Define custom fonts [\#18](https://github.com/johnxnguyen/Down/issues/18)
+- Render progress [\#17](https://github.com/johnxnguyen/Down/issues/17)
+- Disable zoom WebView [\#16](https://github.com/johnxnguyen/Down/issues/16)
+- Text Size of DownView too small [\#15](https://github.com/johnxnguyen/Down/issues/15)
+- How to customize the Font? [\#14](https://github.com/johnxnguyen/Down/issues/14)
+- Support Images [\#13](https://github.com/johnxnguyen/Down/issues/13)
+- How to manually install \(w/o Carthage or CocoaPods\) [\#12](https://github.com/johnxnguyen/Down/issues/12)
+- Add support for Carthage [\#8](https://github.com/johnxnguyen/Down/issues/8)
 
-**Merged pull requests:**
+## [v0.3](https://github.com/johnxnguyen/Down/tree/v0.3) (2016-10-12)
 
-- Adds filters to remove Xcode-specific warnings [\#48](https://github.com/iwasrobbed/Down/pull/48) ([128keaton](https://github.com/128keaton))
-- Fixes issue \#43 [\#47](https://github.com/iwasrobbed/Down/pull/47) ([128keaton](https://github.com/128keaton))
-- Update to Swift 4  [\#46](https://github.com/iwasrobbed/Down/pull/46) ([iwasrobbed](https://github.com/iwasrobbed))
-- Fixed error with accessing shared workspace. [\#44](https://github.com/iwasrobbed/Down/pull/44) ([mjzac](https://github.com/mjzac))
-
-## [v0.4.0](https://github.com/iwasrobbed/Down/tree/v0.4.0) (2017-08-31)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.3.5...v0.4.0)
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.2...v0.3)
 
 **Implemented enhancements:**
 
-- Example project [\#37](https://github.com/iwasrobbed/Down/issues/37)
-- Markdown tables support [\#36](https://github.com/iwasrobbed/Down/issues/36)
+- Swift 3.0 support [\#10](https://github.com/johnxnguyen/Down/issues/10)
+- Add web view for rendering output [\#3](https://github.com/johnxnguyen/Down/issues/3)
 
 **Closed issues:**
 
-- Unable to build with Xcode 9 [\#41](https://github.com/iwasrobbed/Down/issues/41)
-- Can not load local image and link to local .md file [\#40](https://github.com/iwasrobbed/Down/issues/40)
-- Fenced code syntax highlighting [\#35](https://github.com/iwasrobbed/Down/issues/35)
-- down.toAttributedString\(\) custom text font and image size [\#33](https://github.com/iwasrobbed/Down/issues/33)
+- Can you give an example how to custom the parser? [\#9](https://github.com/johnxnguyen/Down/issues/9)
 
 **Merged pull requests:**
 
-- Closes “Example” Issue [\#38](https://github.com/iwasrobbed/Down/pull/38) ([128keaton](https://github.com/128keaton))
-- Prevent zoom documentation [\#34](https://github.com/iwasrobbed/Down/pull/34) ([Kumuluzz](https://github.com/Kumuluzz))
+- Swift 3 [\#11](https://github.com/johnxnguyen/Down/pull/11) ([azeff](https://github.com/azeff))
+- Adds a few extra tests where possible [\#7](https://github.com/johnxnguyen/Down/pull/7) ([iwasrobbed](https://github.com/iwasrobbed))
+- DownView rendering to close \#3 [\#5](https://github.com/johnxnguyen/Down/pull/5) ([iwasrobbed](https://github.com/iwasrobbed))
 
-## [v0.3.5](https://github.com/iwasrobbed/Down/tree/v0.3.5) (2017-05-25)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.3.4...v0.3.5)
+## [v0.2](https://github.com/johnxnguyen/Down/tree/v0.2) (2016-06-02)
+
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.1.1...v0.2)
 
 **Implemented enhancements:**
 
-- Disable analysis of cmark source code [\#31](https://github.com/iwasrobbed/Down/pull/31) ([tonyarnold](https://github.com/tonyarnold))
+- Add attributed string support [\#2](https://github.com/johnxnguyen/Down/issues/2)
+- Adds attributed string rendering [\#4](https://github.com/johnxnguyen/Down/pull/4) ([iwasrobbed](https://github.com/iwasrobbed))
 
-## [v0.3.4](https://github.com/iwasrobbed/Down/tree/v0.3.4) (2017-05-13)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.3.3...v0.3.4)
+## [v0.1.1](https://github.com/johnxnguyen/Down/tree/v0.1.1) (2016-06-01)
 
-**Merged pull requests:**
-
-- Suggested project fixes/changes [\#28](https://github.com/iwasrobbed/Down/pull/28) ([tonyarnold](https://github.com/tonyarnold))
-- Add the ability to initialise a DownView using a custom template bundle [\#27](https://github.com/iwasrobbed/Down/pull/27) ([tonyarnold](https://github.com/tonyarnold))
-
-## [v0.3.3](https://github.com/iwasrobbed/Down/tree/v0.3.3) (2017-03-09)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.3.2...v0.3.3)
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/v0.1...v0.1.1)
 
 **Implemented enhancements:**
 
-- Add OS X support [\#6](https://github.com/iwasrobbed/Down/issues/6)
+- Add CocoaPods support & cmark license [\#1](https://github.com/johnxnguyen/Down/pull/1) ([iwasrobbed](https://github.com/iwasrobbed))
 
-**Merged pull requests:**
+## [v0.1](https://github.com/johnxnguyen/Down/tree/v0.1) (2016-06-01)
 
-- \#6 macOS Support [\#25](https://github.com/iwasrobbed/Down/pull/25) ([128keaton](https://github.com/128keaton))
-
-## [v0.3.2](https://github.com/iwasrobbed/Down/tree/v0.3.2) (2017-02-26)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.3.1...v0.3.2)
-
-**Implemented enhancements:**
-
-- Create changelog [\#20](https://github.com/iwasrobbed/Down/issues/20)
-
-**Closed issues:**
-
-- A faster substitute to NSHTMLTextDocumentType? [\#23](https://github.com/iwasrobbed/Down/issues/23)
-- How to update DownView content and keep the style? [\#19](https://github.com/iwasrobbed/Down/issues/19)
-
-**Merged pull requests:**
-
-- Add tvOS support [\#24](https://github.com/iwasrobbed/Down/pull/24) ([invliD](https://github.com/invliD))
-- v0.3.1: Add the ability to update DownView content [\#22](https://github.com/iwasrobbed/Down/pull/22) ([iwasrobbed](https://github.com/iwasrobbed))
-
-## [v0.3.1](https://github.com/iwasrobbed/Down/tree/v0.3.1) (2017-02-09)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.3...v0.3.1)
-
-**Closed issues:**
-
-- How to keep UITextView font style [\#21](https://github.com/iwasrobbed/Down/issues/21)
-- Define custom fonts [\#18](https://github.com/iwasrobbed/Down/issues/18)
-- Render progress [\#17](https://github.com/iwasrobbed/Down/issues/17)
-- Disable zoom WebView [\#16](https://github.com/iwasrobbed/Down/issues/16)
-- Text Size of DownView too small [\#15](https://github.com/iwasrobbed/Down/issues/15)
-- How to customize the Font? [\#14](https://github.com/iwasrobbed/Down/issues/14)
-- Support Images [\#13](https://github.com/iwasrobbed/Down/issues/13)
-- How to manually install \(w/o Carthage or CocoaPods\) [\#12](https://github.com/iwasrobbed/Down/issues/12)
-- Add support for Carthage [\#8](https://github.com/iwasrobbed/Down/issues/8)
-
-## [v0.3](https://github.com/iwasrobbed/Down/tree/v0.3) (2016-10-12)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.2...v0.3)
-
-**Implemented enhancements:**
-
-- Swift 3.0 support [\#10](https://github.com/iwasrobbed/Down/issues/10)
-- Add web view for rendering output [\#3](https://github.com/iwasrobbed/Down/issues/3)
-
-**Closed issues:**
-
-- Can you give an example how to custom the parser? [\#9](https://github.com/iwasrobbed/Down/issues/9)
-
-**Merged pull requests:**
-
-- Swift 3 [\#11](https://github.com/iwasrobbed/Down/pull/11) ([azeff](https://github.com/azeff))
-- Adds a few extra tests where possible [\#7](https://github.com/iwasrobbed/Down/pull/7) ([iwasrobbed](https://github.com/iwasrobbed))
-- DownView rendering to close \#3 [\#5](https://github.com/iwasrobbed/Down/pull/5) ([iwasrobbed](https://github.com/iwasrobbed))
-
-## [v0.2](https://github.com/iwasrobbed/Down/tree/v0.2) (2016-06-02)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.1.1...v0.2)
-
-**Implemented enhancements:**
-
-- Add attributed string support [\#2](https://github.com/iwasrobbed/Down/issues/2)
-- Adds attributed string rendering [\#4](https://github.com/iwasrobbed/Down/pull/4) ([iwasrobbed](https://github.com/iwasrobbed))
-
-## [v0.1.1](https://github.com/iwasrobbed/Down/tree/v0.1.1) (2016-06-01)
-[Full Changelog](https://github.com/iwasrobbed/Down/compare/v0.1...v0.1.1)
-
-**Implemented enhancements:**
-
-- Add CocoaPods support & cmark license [\#1](https://github.com/iwasrobbed/Down/pull/1) ([iwasrobbed](https://github.com/iwasrobbed))
-
-## [v0.1](https://github.com/iwasrobbed/Down/tree/v0.1) (2016-06-01)
+[Full Changelog](https://github.com/johnxnguyen/Down/compare/69fba2a97e45a07360054a811cac018bec10e17d...v0.1)
 
 
-\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*

Down-Example/Down-Example.xcodeproj/project.pbxproj

@@ -53,6 +53,13 @@
 			remoteGlobalIDString = 8AFAEAFB1E6E32E900E09B68;
 			remoteInfo = DownTests;
 		};
+		D4C77E06240EEB64004675B3 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = D49980AF1FA560F8004EE42E /* Down.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = EEBA153A2344845500B54ECB;
+			remoteInfo = DownSnapshotTests;
+		};
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -186,6 +193,7 @@
 			children = (
 				D49980B51FA560F8004EE42E /* Down.framework */,
 				D49980B71FA560F8004EE42E /* DownTests.xctest */,
+				D4C77E07240EEB64004675B3 /* DownSnapshotTests.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -238,12 +246,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 1000;
-				LastUpgradeCheck = 1020;
-				ORGANIZATIONNAME = down;
+				LastUpgradeCheck = 1130;
+				ORGANIZATIONNAME = Down;
 				TargetAttributes = {
 					14090A482185411800503C06 = {
 						CreatedOnToolsVersion = 10.0;
-						DevelopmentTeam = NWN7H36NTR;
+						DevelopmentTeam = 7V68668DJN;
 						LastSwiftMigration = 1020;
 						ProvisioningStyle = Automatic;
 						SystemCapabilities = {
@@ -298,6 +306,13 @@
 			remoteRef = D49980B61FA560F8004EE42E /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
+		D4C77E07240EEB64004675B3 /* DownSnapshotTests.xctest */ = {
+			isa = PBXReferenceProxy;
+			fileType = wrapper.cfbundle;
+			path = DownSnapshotTests.xctest;
+			remoteRef = D4C77E06240EEB64004675B3 /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
 /* End PBXReferenceProxy section */
 
 /* Begin PBXResourcesBuildPhase section */
@@ -398,14 +413,15 @@
 				CODE_SIGN_IDENTITY = "Mac Developer";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				DEVELOPMENT_TEAM = NWN7H36NTR;
+				DEVELOPMENT_TEAM = 7V68668DJN;
+				ENABLE_HARDENED_RUNTIME = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				INFOPLIST_FILE = "macOS Demo/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
-				PRODUCT_BUNDLE_IDENTIFIER = "com.glazeddonut.macOS-Demo";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.downMarkdown.macOS-Demo";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
 				SWIFT_VERSION = 5.0;
@@ -424,13 +440,14 @@
 				CODE_SIGN_IDENTITY = "Mac Developer";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				DEVELOPMENT_TEAM = NWN7H36NTR;
+				DEVELOPMENT_TEAM = 7V68668DJN;
+				ENABLE_HARDENED_RUNTIME = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				INFOPLIST_FILE = "macOS Demo/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				MTL_FAST_MATH = YES;
-				PRODUCT_BUNDLE_IDENTIFIER = "com.glazeddonut.macOS-Demo";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.downMarkdown.macOS-Demo";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
 				SWIFT_VERSION = 5.0;
@@ -565,7 +582,7 @@
 				INFOPLIST_FILE = "Down-Example/Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 10.2;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				PRODUCT_BUNDLE_IDENTIFIER = "com.glazeddonut.Down-Example";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.downMarkdown.Down-Example";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos";
 				SWIFT_VERSION = 5.0;
@@ -585,7 +602,7 @@
 				INFOPLIST_FILE = "Down-Example/Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 10.2;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				PRODUCT_BUNDLE_IDENTIFIER = "com.glazeddonut.Down-Example";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.downMarkdown.Down-Example";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos";
 				SWIFT_VERSION = 5.0;

Down-Example/Down-Example.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,16 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "SnapshotTesting",
+        "repositoryURL": "https://github.com/pointfreeco/swift-snapshot-testing.git",
+        "state": {
+          "branch": null,
+          "revision": "c466812aa2e22898f27557e2e780d3aad7a27203",
+          "version": "1.8.2"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Down-Example/Down-Example.xcodeproj/xcshareddata/xcschemes/Down-Example.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,8 +27,6 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -38,8 +36,8 @@
             ReferencedContainer = "container:Down-Example.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
+      <Testables>
+      </Testables>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -61,8 +59,6 @@
             ReferencedContainer = "container:Down-Example.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

Down-Example/Down-Example.xcodeproj/xcshareddata/xcschemes/macOS Demo.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,8 +27,6 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -38,8 +36,8 @@
             ReferencedContainer = "container:Down-Example.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
+      <Testables>
+      </Testables>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -61,8 +59,6 @@
             ReferencedContainer = "container:Down-Example.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

Down-Example/Down-Example.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>IDEDidComputeMac32BitWarning</key>
-	<true/>
-</dict>
-</plist>

Down-Example/Down-Example/AppDelegate.swift

@@ -3,7 +3,7 @@
 //  Down-Example
 //
 //  Created by Keaton Burleson on 7/1/17.
-//  Copyright © 2017 down. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import UIKit

Down-Example/Down-Example/ViewController.swift

@@ -3,7 +3,7 @@
 //  Down-Example
 //
 //  Created by Keaton Burleson on 7/1/17.
-//  Copyright © 2017 down. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import UIKit

Down-Example/macOS Demo/AppDelegate.swift

@@ -3,7 +3,7 @@
 //  macOS Demo
 //
 //  Created by Chris Zielinski on 10/27/18.
-//  Copyright © 2018 down. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Cocoa

Down-Example/macOS Demo/Info.plist

@@ -23,7 +23,7 @@
 	<key>LSMinimumSystemVersion</key>
 	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright © 2018 down. All rights reserved.</string>
+	<string>Copyright © 2016-2019 Down. All rights reserved.</string>
 	<key>NSMainStoryboardFile</key>
 	<string>Main</string>
 	<key>NSPrincipalClass</key>

Down-Example/macOS Demo/ViewController.swift

@@ -3,7 +3,7 @@
 //  macOS Demo
 //
 //  Created by Chris Zielinski on 10/27/18.
-//  Copyright © 2018 down. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Cocoa

Down.podspec

@@ -1,24 +1,23 @@
 Pod::Spec.new do |spec|
   spec.name         = "Down"
   spec.summary      = "Blazing fast Markdown rendering in Swift, built upon cmark."
-  spec.version      = "0.8.5"
-  spec.homepage     = "https://github.com/iwasrobbed/Down"
+  spec.version      = "0.11.0"
+  spec.homepage     = "https://github.com/johnxnguyen/Down"
   spec.license      = { :type => "MIT", :file => "LICENSE" }
-  spec.authors      = { "Rob Phillips" => "rob@robphillips.me" }
-  spec.source       = { :git => "https://github.com/iwasrobbed/Down.git", :tag => "v" + spec.version.to_s }
-  spec.source_files = "Source/{AST,cmark,Enums & Options,Extensions,Renderers}/**/*.{h,c,swift}", "Source/*"
-  spec.ios.source_files = "Source/Views/**"
-  spec.osx.source_files = "Source/Views/**"
-  spec.public_header_files = "Source/*.h"
+  spec.authors      = { "John Nguyen" => "polyxo@protonmail.com" }
+  spec.source       = { :git => "https://github.com/johnxnguyen/Down.git", :tag => "v" + spec.version.to_s }
+  spec.source_files = "Sources/Down/{AST,Enums & Options,Extensions,Renderers}/**/*.swift", "Sources/cmark/*.{h,c}", "Sources/Down/*"
+  spec.ios.source_files = "Sources/Down/Views/**"
+  spec.osx.source_files = "Sources/Down/Views/**"
+  spec.public_header_files = "Sources/Down/*.h"
   spec.ios.deployment_target = "9.0"
   spec.tvos.deployment_target = "9.0"
   spec.osx.deployment_target = "10.11"
   spec.requires_arc = true
   spec.module_name = "Down"
-  spec.preserve_paths = "Source/cmark/include/module.modulemap", "Source/cmark/*.inc", "Source/cmark/COPYING"
-  spec.pod_target_xcconfig = { 'SWIFT_INCLUDE_PATHS' => '$(SRCROOT)/Down/Source/cmark/**' }
-  spec.compiler_flags = '-Wno-shorten-64-to-32'
-  spec.ios.resource = 'Resources/DownView.bundle'
-  spec.osx.resource = 'Resources/DownView.bundle'
-  spec.swift_version = "5.0"
+  spec.preserve_paths = "Sources/cmark/include/module.modulemap", "Sources/cmark/*.inc", "Sources/cmark/COPYING"
+  spec.pod_target_xcconfig = { 'SWIFT_INCLUDE_PATHS' => '$(SRCROOT)/Down/Sources/cmark/**' }
+  spec.ios.resource = 'Sources/Down/Resources/DownView.bundle'
+  spec.osx.resource = 'Sources/Down/Resources/DownView.bundle'
+  spec.swift_versions = ['5.0', '5.1']
 end

Down.xcodeproj/project.pbxproj

@@ -3,11 +3,12 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 52;
 	objects = {
 
 /* Begin PBXBuildFile section */
 		14C5E33521877CE900D5380C /* DownView.bundle in Resources */ = {isa = PBXBuildFile; fileRef = D41689B51CFFE6BB00E5802B /* DownView.bundle */; };
+		26CABB93252B4D490032183C /* ChildSequence.swift in Sources */ = {isa = PBXBuildFile; fileRef = 26CABB92252B4D490032183C /* ChildSequence.swift */; };
 		8A569F481E6B3ED2008BE2AC /* DownView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D43AE5D91CFFD0D0006E1522 /* DownView.swift */; };
 		8A569F491E6B3ED9008BE2AC /* blocks.c in Sources */ = {isa = PBXBuildFile; fileRef = D4201EF71CFA5D63008EEC6E /* blocks.c */; settings = {COMPILER_FLAGS = "-w -Xanalyzer -analyzer-disable-all-checks"; }; };
 		8A569F4A1E6B3ED9008BE2AC /* buffer.c in Sources */ = {isa = PBXBuildFile; fileRef = D4201EF81CFA5D63008EEC6E /* buffer.c */; settings = {COMPILER_FLAGS = "-w -Xanalyzer -analyzer-disable-all-checks"; }; };
@@ -64,9 +65,46 @@
 		8AFAEB091E6E331700E09B68 /* StringTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D438696B1D00D27700E95A1F /* StringTests.swift */; };
 		907C64651EC133780095FEE1 /* TestDownView.bundle in Resources */ = {isa = PBXBuildFile; fileRef = 907C64621EC120530095FEE1 /* TestDownView.bundle */; };
 		90A40A9C1EC03292004F2E91 /* Down.framework in Copy Bundled Frameworks */ = {isa = PBXBuildFile; fileRef = 8A569F401E6B3E50008BE2AC /* Down.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		EE0E54F82300800E0070C83F /* BlockBackgroundColorAttribute.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE0E54F72300800E0070C83F /* BlockBackgroundColorAttribute.swift */; };
+		EE3E7E38260400E800170A52 /* DownDebugLayoutManagerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE5D2DF822FC9E89009EC13E /* DownDebugLayoutManagerTests.swift */; };
+		EE3E7E3F260400EE00170A52 /* LinkStyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE5D2DF522FC99A6009EC13E /* LinkStyleTests.swift */; };
+		EE3E7E46260400F100170A52 /* CodeBlockStyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE64722A22F8BB0B00C5F0BA /* CodeBlockStyleTests.swift */; };
+		EE3E7E4D260400F500170A52 /* BlockQuoteStyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA2BDC722F705B900D0C72C /* BlockQuoteStyleTests.swift */; };
+		EE3E7E54260400F900170A52 /* ThematicBreakSyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA5C02A22F58B8000B91D60 /* ThematicBreakSyleTests.swift */; };
+		EE3E7E5B260400FC00170A52 /* HeadingStyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE99E3DD22F0C83F00BCE15B /* HeadingStyleTests.swift */; };
+		EE3E7E622604010000170A52 /* InlineStyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE9E886222EF76040005948C /* InlineStyleTests.swift */; };
+		EE3E7E692604010300170A52 /* ListItemStyleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE335C4922EDC85900648842 /* ListItemStyleTests.swift */; };
+		EE3E7E702604010700170A52 /* StylerTestSuite.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE59C30122ECF0BD006EE8A8 /* StylerTestSuite.swift */; };
+		EE3E7E812604019300170A52 /* SnapshotTesting in Frameworks */ = {isa = PBXBuildFile; productRef = EE3E7E802604019300170A52 /* SnapshotTesting */; };
+		EE3E7E88260401F000170A52 /* VisitorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE64FEEF225BEB3900A35B34 /* VisitorTests.swift */; };
+		EE408A39230338B600E5278A /* CGPointTranslateTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE408A38230338B600E5278A /* CGPointTranslateTests.swift */; };
+		EE408A3B2303399B00E5278A /* CGRectHelpersTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE408A3A2303399B00E5278A /* CGRectHelpersTests.swift */; };
+		EE408A3D23033B6B00E5278A /* ListItemPrefixGeneratorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE408A3C23033B6B00E5278A /* ListItemPrefixGeneratorTests.swift */; };
+		EE44848B2301E51C0065C836 /* CodeBlockOptions.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE44848A2301E51C0065C836 /* CodeBlockOptions.swift */; };
+		EE4484912301F2920065C836 /* CGPoint+Translate.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE4484902301F2920065C836 /* CGPoint+Translate.swift */; };
+		EE4484932301F2DB0065C836 /* CGRect+Helpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE4484922301F2DB0065C836 /* CGRect+Helpers.swift */; };
 		EE469B11226CF3B500C0655D /* BaseNode.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE469B10226CF3B500C0655D /* BaseNode.swift */; };
+		EE48C7D922EC9250004815ED /* ParagraphStyleCollection.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE48C7D822EC9250004815ED /* ParagraphStyleCollection.swift */; };
+		EE48C7DB22EC946F004815ED /* ColorCollection.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE48C7DA22EC946F004815ED /* ColorCollection.swift */; };
+		EE4F77C322FF3F170026A983 /* DownStylerConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE4F77C222FF3F170026A983 /* DownStylerConfiguration.swift */; };
 		EE5F2BA42262564A00B7C0F3 /* Styler.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE5F2BA32262564A00B7C0F3 /* Styler.swift */; };
-		EE64FEF0225BEB3900A35B34 /* VisitorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE64FEEF225BEB3900A35B34 /* VisitorTests.swift */; };
+		EE8F38CC22BFB2420056270E /* NodeTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE8F38CB22BFB2420056270E /* NodeTests.swift */; };
+		EE8F38CE22BFEDE50056270E /* ListItemPrefixGenerator.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE8F38CD22BFEDE50056270E /* ListItemPrefixGenerator.swift */; };
+		EE97253E22C130D8004D3B3A /* NSMutableAttributedString+AttributesTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE97253D22C130D8004D3B3A /* NSMutableAttributedString+AttributesTests.swift */; };
+		EE97254322C14B79004D3B3A /* NSAttributedString+HelpersTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE97254222C14B79004D3B3A /* NSAttributedString+HelpersTests.swift */; };
+		EEA2BDC422F704F200D0C72C /* QuoteStripeOptions.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA2BDC322F704F200D0C72C /* QuoteStripeOptions.swift */; };
+		EEA2BDC622F7057600D0C72C /* ListItemOptions.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA2BDC522F7057600D0C72C /* ListItemOptions.swift */; };
+		EEA2BDCA22F7152B00D0C72C /* ThematicBreakOptions.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA2BDC922F7152B00D0C72C /* ThematicBreakOptions.swift */; };
+		EEA5C02922F58A0900B91D60 /* DownTextView.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA5C02822F58A0900B91D60 /* DownTextView.swift */; };
+		EEA5C02D22F5C96B00B91D60 /* QuoteStripeAttribute.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEA5C02C22F5C96B00B91D60 /* QuoteStripeAttribute.swift */; };
+		EEBE62F025E28F3D005CCAD6 /* BundleHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEBE62EF25E28F3D005CCAD6 /* BundleHelper.swift */; };
+		EED7FED825E3133C0033E33A /* DownView (macOS).bundle in Resources */ = {isa = PBXBuildFile; fileRef = 14C5E33621877FCD00D5380C /* DownView (macOS).bundle */; };
+		EED8DA8E22BE404F00E54492 /* DownStyler.swift in Sources */ = {isa = PBXBuildFile; fileRef = EED8DA8D22BE404F00E54492 /* DownStyler.swift */; };
+		EED8DA9022BECBAE00E54492 /* NSAttributedString+Helpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = EED8DA8F22BECBAE00E54492 /* NSAttributedString+Helpers.swift */; };
+		EED8DA9222BECBF200E54492 /* NSMutableAttributedString+Attributes.swift in Sources */ = {isa = PBXBuildFile; fileRef = EED8DA9122BECBF200E54492 /* NSMutableAttributedString+Attributes.swift */; };
+		EED8DA9422BECC2100E54492 /* UIFont+Traits.swift in Sources */ = {isa = PBXBuildFile; fileRef = EED8DA9322BECC2100E54492 /* UIFont+Traits.swift */; };
+		EED8DA9722BECD7500E54492 /* FontCollection.swift in Sources */ = {isa = PBXBuildFile; fileRef = EED8DA9622BECD7500E54492 /* FontCollection.swift */; };
+		EEE2C7F122C2AFEF001B7054 /* ListItemParagraphStyler.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEE2C7F022C2AFEF001B7054 /* ListItemParagraphStyler.swift */; };
 		EEEBEE47225D298D00AE438D /* Document.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEEBEE46225D298D00AE438D /* Document.swift */; };
 		EEEBEE49225D29C200AE438D /* BlockQuote.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEEBEE48225D29C200AE438D /* BlockQuote.swift */; };
 		EEEBEE4B225D29D800AE438D /* List.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEEBEE4A225D29D800AE438D /* List.swift */; };
@@ -90,7 +128,11 @@
 		EEEBEE70225D2B9D00AE438D /* DebugVisitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEEBEE6F225D2B9D00AE438D /* DebugVisitor.swift */; };
 		EEEBEE72225D2F9200AE438D /* AttributedStringVisitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEEBEE71225D2F9200AE438D /* AttributedStringVisitor.swift */; };
 		EEF1376F2259E53400D7DDE0 /* Node.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEF1376E2259E53400D7DDE0 /* Node.swift */; };
-		EEF137712259E7E700D7DDE0 /* Vistor.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEF137702259E7E700D7DDE0 /* Vistor.swift */; };
+		EEF137712259E7E700D7DDE0 /* Visitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEF137702259E7E700D7DDE0 /* Visitor.swift */; };
+		EEF8580F22FA101C0025370B /* DownDebugLayoutManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEF8580E22FA101C0025370B /* DownDebugLayoutManager.swift */; };
+		EEF8581122FA11690025370B /* DownDebugTextView.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEF8581022FA11690025370B /* DownDebugTextView.swift */; };
+		EEFFFDDB22F4C36800036FD5 /* ThematicBreakAttribute.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEFFFDDA22F4C36800036FD5 /* ThematicBreakAttribute.swift */; };
+		EEFFFDDD22F4C8AB00036FD5 /* DownLayoutManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEFFFDDC22F4C8AB00036FD5 /* DownLayoutManager.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXBuildRule section */
@@ -99,6 +141,8 @@
 			compilerSpec = com.apple.compilers.pbxcp;
 			filePatterns = "*.inc";
 			fileType = pattern.proxy;
+			inputFiles = (
+			);
 			isEditable = 1;
 			outputFiles = (
 			);
@@ -109,6 +153,8 @@
 			compilerSpec = com.apple.compilers.pbxcp;
 			filePatterns = "*COPYING";
 			fileType = pattern.proxy;
+			inputFiles = (
+			);
 			isEditable = 1;
 			outputFiles = (
 			);
@@ -119,6 +165,8 @@
 			compilerSpec = com.apple.compilers.pbxcp;
 			filePatterns = "*.modulemap";
 			fileType = pattern.proxy;
+			inputFiles = (
+			);
 			isEditable = 1;
 			outputFiles = (
 			);
@@ -152,6 +200,7 @@
 
 /* Begin PBXFileReference section */
 		14C5E33621877FCD00D5380C /* DownView (macOS).bundle */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.plug-in"; path = "DownView (macOS).bundle"; sourceTree = "<group>"; };
+		26CABB92252B4D490032183C /* ChildSequence.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChildSequence.swift; sourceTree = "<group>"; };
 		8A569F401E6B3E50008BE2AC /* Down.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Down.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		8AFAEAFB1E6E32E900E09B68 /* DownTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = DownTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		8C73B9B522A687C400C8E60F /* module.modulemap */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = "sourcecode.module-map"; path = module.modulemap; sourceTree = "<group>"; };
@@ -216,9 +265,46 @@
 		D4CF88971CFFAC2C00F07FD1 /* DownAttributedStringRenderable.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DownAttributedStringRenderable.swift; sourceTree = "<group>"; };
 		D4DC91131CFDED4B0091CE09 /* DownCommonMarkRenderable.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DownCommonMarkRenderable.swift; sourceTree = "<group>"; };
 		D4F948DB1D00A4A800C9C0F6 /* NSAttributedStringTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NSAttributedStringTests.swift; sourceTree = "<group>"; };
+		EE0E54F72300800E0070C83F /* BlockBackgroundColorAttribute.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlockBackgroundColorAttribute.swift; sourceTree = "<group>"; };
+		EE335C4922EDC85900648842 /* ListItemStyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListItemStyleTests.swift; sourceTree = "<group>"; };
+		EE39B28026063E0D002C4F8D /* .swiftlint.yml */ = {isa = PBXFileReference; lastKnownFileType = text.yaml; path = .swiftlint.yml; sourceTree = "<group>"; };
+		EE408A38230338B600E5278A /* CGPointTranslateTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CGPointTranslateTests.swift; sourceTree = "<group>"; };
+		EE408A3A2303399B00E5278A /* CGRectHelpersTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CGRectHelpersTests.swift; sourceTree = "<group>"; };
+		EE408A3C23033B6B00E5278A /* ListItemPrefixGeneratorTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListItemPrefixGeneratorTests.swift; sourceTree = "<group>"; };
+		EE44848A2301E51C0065C836 /* CodeBlockOptions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CodeBlockOptions.swift; sourceTree = "<group>"; };
+		EE4484902301F2920065C836 /* CGPoint+Translate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "CGPoint+Translate.swift"; sourceTree = "<group>"; };
+		EE4484922301F2DB0065C836 /* CGRect+Helpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "CGRect+Helpers.swift"; sourceTree = "<group>"; };
 		EE469B10226CF3B500C0655D /* BaseNode.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BaseNode.swift; sourceTree = "<group>"; };
+		EE48C7D822EC9250004815ED /* ParagraphStyleCollection.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ParagraphStyleCollection.swift; sourceTree = "<group>"; };
+		EE48C7DA22EC946F004815ED /* ColorCollection.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ColorCollection.swift; sourceTree = "<group>"; };
+		EE4F77C222FF3F170026A983 /* DownStylerConfiguration.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownStylerConfiguration.swift; sourceTree = "<group>"; };
+		EE54F96E22EB9CE500628683 /* SnapshotTesting.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = SnapshotTesting.framework; path = Carthage/Build/iOS/SnapshotTesting.framework; sourceTree = "<group>"; };
+		EE59C30122ECF0BD006EE8A8 /* StylerTestSuite.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StylerTestSuite.swift; sourceTree = "<group>"; };
+		EE5D2DF522FC99A6009EC13E /* LinkStyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LinkStyleTests.swift; sourceTree = "<group>"; };
+		EE5D2DF822FC9E89009EC13E /* DownDebugLayoutManagerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownDebugLayoutManagerTests.swift; sourceTree = "<group>"; };
 		EE5F2BA32262564A00B7C0F3 /* Styler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Styler.swift; sourceTree = "<group>"; };
+		EE64722A22F8BB0B00C5F0BA /* CodeBlockStyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CodeBlockStyleTests.swift; sourceTree = "<group>"; };
 		EE64FEEF225BEB3900A35B34 /* VisitorTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VisitorTests.swift; sourceTree = "<group>"; };
+		EE8F38CB22BFB2420056270E /* NodeTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NodeTests.swift; sourceTree = "<group>"; };
+		EE8F38CD22BFEDE50056270E /* ListItemPrefixGenerator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListItemPrefixGenerator.swift; sourceTree = "<group>"; };
+		EE97253D22C130D8004D3B3A /* NSMutableAttributedString+AttributesTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NSMutableAttributedString+AttributesTests.swift"; sourceTree = "<group>"; };
+		EE97254222C14B79004D3B3A /* NSAttributedString+HelpersTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NSAttributedString+HelpersTests.swift"; sourceTree = "<group>"; };
+		EE99E3DD22F0C83F00BCE15B /* HeadingStyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HeadingStyleTests.swift; sourceTree = "<group>"; };
+		EE9E886222EF76040005948C /* InlineStyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InlineStyleTests.swift; sourceTree = "<group>"; };
+		EEA2BDC322F704F200D0C72C /* QuoteStripeOptions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QuoteStripeOptions.swift; sourceTree = "<group>"; };
+		EEA2BDC522F7057600D0C72C /* ListItemOptions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListItemOptions.swift; sourceTree = "<group>"; };
+		EEA2BDC722F705B900D0C72C /* BlockQuoteStyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlockQuoteStyleTests.swift; sourceTree = "<group>"; };
+		EEA2BDC922F7152B00D0C72C /* ThematicBreakOptions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThematicBreakOptions.swift; sourceTree = "<group>"; };
+		EEA5C02822F58A0900B91D60 /* DownTextView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownTextView.swift; sourceTree = "<group>"; };
+		EEA5C02A22F58B8000B91D60 /* ThematicBreakSyleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThematicBreakSyleTests.swift; sourceTree = "<group>"; };
+		EEA5C02C22F5C96B00B91D60 /* QuoteStripeAttribute.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QuoteStripeAttribute.swift; sourceTree = "<group>"; };
+		EEBE62EF25E28F3D005CCAD6 /* BundleHelper.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = BundleHelper.swift; sourceTree = "<group>"; };
+		EED8DA8D22BE404F00E54492 /* DownStyler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownStyler.swift; sourceTree = "<group>"; };
+		EED8DA8F22BECBAE00E54492 /* NSAttributedString+Helpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NSAttributedString+Helpers.swift"; sourceTree = "<group>"; };
+		EED8DA9122BECBF200E54492 /* NSMutableAttributedString+Attributes.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NSMutableAttributedString+Attributes.swift"; sourceTree = "<group>"; };
+		EED8DA9322BECC2100E54492 /* UIFont+Traits.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIFont+Traits.swift"; sourceTree = "<group>"; };
+		EED8DA9622BECD7500E54492 /* FontCollection.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FontCollection.swift; sourceTree = "<group>"; };
+		EEE2C7F022C2AFEF001B7054 /* ListItemParagraphStyler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListItemParagraphStyler.swift; sourceTree = "<group>"; };
 		EEEBEE46225D298D00AE438D /* Document.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Document.swift; sourceTree = "<group>"; };
 		EEEBEE48225D29C200AE438D /* BlockQuote.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlockQuote.swift; sourceTree = "<group>"; };
 		EEEBEE4A225D29D800AE438D /* List.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = List.swift; sourceTree = "<group>"; };
@@ -242,7 +328,11 @@
 		EEEBEE6F225D2B9D00AE438D /* DebugVisitor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DebugVisitor.swift; sourceTree = "<group>"; };
 		EEEBEE71225D2F9200AE438D /* AttributedStringVisitor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AttributedStringVisitor.swift; sourceTree = "<group>"; };
 		EEF1376E2259E53400D7DDE0 /* Node.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Node.swift; sourceTree = "<group>"; };
-		EEF137702259E7E700D7DDE0 /* Vistor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Vistor.swift; sourceTree = "<group>"; };
+		EEF137702259E7E700D7DDE0 /* Visitor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Visitor.swift; sourceTree = "<group>"; };
+		EEF8580E22FA101C0025370B /* DownDebugLayoutManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownDebugLayoutManager.swift; sourceTree = "<group>"; };
+		EEF8581022FA11690025370B /* DownDebugTextView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownDebugTextView.swift; sourceTree = "<group>"; };
+		EEFFFDDA22F4C36800036FD5 /* ThematicBreakAttribute.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThematicBreakAttribute.swift; sourceTree = "<group>"; };
+		EEFFFDDC22F4C8AB00036FD5 /* DownLayoutManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DownLayoutManager.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -251,6 +341,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				8AFAEB001E6E32E900E09B68 /* Down.framework in Frameworks */,
+				EE3E7E812604019300170A52 /* SnapshotTesting in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -283,25 +374,25 @@
 			path = Configurations;
 			sourceTree = "<group>";
 		};
-		D41689B41CFFE6BB00E5802B /* Resources */ = {
+		D41689B41CFFE6BB00E5802B /* Supporting Files */ = {
 			isa = PBXGroup;
 			children = (
 				90A40A971EC0309A004F2E91 /* Configurations */,
 				90A40A951EC02FF6004F2E91 /* Down-Info.plist */,
 				90A40A961EC02FF6004F2E91 /* DownTests-Info.plist */,
-				D41689B51CFFE6BB00E5802B /* DownView.bundle */,
-				14C5E33621877FCD00D5380C /* DownView (macOS).bundle */,
 			);
-			path = Resources;
+			path = "Supporting Files";
 			sourceTree = "<group>";
 		};
 		D4201E761CFA5151008EEC6E = {
 			isa = PBXGroup;
 			children = (
-				D4201E9B1CFA59A5008EEC6E /* Source */,
-				D41689B41CFFE6BB00E5802B /* Resources */,
+				EE39B28026063E0D002C4F8D /* .swiftlint.yml */,
+				D4201E9B1CFA59A5008EEC6E /* Sources */,
+				D41689B41CFFE6BB00E5802B /* Supporting Files */,
 				D4201EC41CFA59A5008EEC6E /* Tests */,
 				D4201E811CFA5151008EEC6E /* Products */,
+				EE54F96D22EB9CE400628683 /* Frameworks */,
 			);
 			indentWidth = 4;
 			sourceTree = "<group>";
@@ -316,30 +407,19 @@
 			name = Products;
 			sourceTree = "<group>";
 		};
-		D4201E9B1CFA59A5008EEC6E /* Source */ = {
+		D4201E9B1CFA59A5008EEC6E /* Sources */ = {
 			isa = PBXGroup;
 			children = (
-				D4CF88961CFF94B300F07FD1 /* Down.h */,
-				D4201EF01CFA59F2008EEC6E /* Down.swift */,
-				EEF1376D2259E4BA00D7DDE0 /* AST */,
-				D44875E71CFA6CF30037A624 /* Enums & Options */,
-				D43AE5C81CFFAE39006E1522 /* Extensions */,
-				D44875E21CFA6B120037A624 /* Renderers */,
-				D43AE5CB1CFFD068006E1522 /* Views */,
+				EED7D92025C6DA4300E52D18 /* Down */,
 				D4201EF61CFA5D63008EEC6E /* cmark */,
 			);
-			path = Source;
+			path = Sources;
 			sourceTree = "<group>";
 		};
 		D4201EC41CFA59A5008EEC6E /* Tests */ = {
 			isa = PBXGroup;
 			children = (
-				907C64611EC120530095FEE1 /* Fixtures */,
-				D4201EC51CFA59A5008EEC6E /* BindingTests.swift */,
-				D41689B21CFFE28200E5802B /* DownViewTests.swift */,
-				D4F948DB1D00A4A800C9C0F6 /* NSAttributedStringTests.swift */,
-				D438696B1D00D27700E95A1F /* StringTests.swift */,
-				EE64FEEF225BEB3900A35B34 /* VisitorTests.swift */,
+				EED7D92725C6DB9100E52D18 /* DownTests */,
 			);
 			path = Tests;
 			sourceTree = "<group>";
@@ -400,6 +480,7 @@
 			isa = PBXGroup;
 			children = (
 				D43AE5D91CFFD0D0006E1522 /* DownView.swift */,
+				EEBE62EF25E28F3D005CCAD6 /* BundleHelper.swift */,
 			);
 			path = Views;
 			sourceTree = "<group>";
@@ -428,14 +509,174 @@
 			path = "Enums & Options";
 			sourceTree = "<group>";
 		};
-		EE5F2BA22262562F00B7C0F3 /* Stylers */ = {
+		EE408A3E23033DFE00E5278A /* Helpers */ = {
+			isa = PBXGroup;
+			children = (
+				EE408A3A2303399B00E5278A /* CGRectHelpersTests.swift */,
+				EE408A38230338B600E5278A /* CGPointTranslateTests.swift */,
+				EE97254222C14B79004D3B3A /* NSAttributedString+HelpersTests.swift */,
+				EE97253D22C130D8004D3B3A /* NSMutableAttributedString+AttributesTests.swift */,
+			);
+			path = Helpers;
+			sourceTree = "<group>";
+		};
+		EE48C7DE22EC99F3004815ED /* Attribute Collections */ = {
+			isa = PBXGroup;
+			children = (
+				EED8DA9622BECD7500E54492 /* FontCollection.swift */,
+				EE48C7DA22EC946F004815ED /* ColorCollection.swift */,
+				EE48C7D822EC9250004815ED /* ParagraphStyleCollection.swift */,
+			);
+			path = "Attribute Collections";
+			sourceTree = "<group>";
+		};
+		EE48C7DF22EC9A4D004815ED /* Extensions */ = {
+			isa = PBXGroup;
+			children = (
+				EED8DA9322BECC2100E54492 /* UIFont+Traits.swift */,
+				EED8DA8F22BECBAE00E54492 /* NSAttributedString+Helpers.swift */,
+				EED8DA9122BECBF200E54492 /* NSMutableAttributedString+Attributes.swift */,
+				EE4484902301F2920065C836 /* CGPoint+Translate.swift */,
+				EE4484922301F2DB0065C836 /* CGRect+Helpers.swift */,
+			);
+			path = Extensions;
+			sourceTree = "<group>";
+		};
+		EE54F96D22EB9CE400628683 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				EE54F96E22EB9CE500628683 /* SnapshotTesting.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+		EE59C30022ECF08E006EE8A8 /* Styler */ = {
+			isa = PBXGroup;
+			children = (
+				EE408A3E23033DFE00E5278A /* Helpers */,
+				EE5D2DF822FC9E89009EC13E /* DownDebugLayoutManagerTests.swift */,
+				EE5D2DF522FC99A6009EC13E /* LinkStyleTests.swift */,
+				EE64722A22F8BB0B00C5F0BA /* CodeBlockStyleTests.swift */,
+				EEA2BDC722F705B900D0C72C /* BlockQuoteStyleTests.swift */,
+				EEA5C02A22F58B8000B91D60 /* ThematicBreakSyleTests.swift */,
+				EE99E3DD22F0C83F00BCE15B /* HeadingStyleTests.swift */,
+				EE9E886222EF76040005948C /* InlineStyleTests.swift */,
+				EE335C4922EDC85900648842 /* ListItemStyleTests.swift */,
+				EE59C30122ECF0BD006EE8A8 /* StylerTestSuite.swift */,
+			);
+			path = Styler;
+			sourceTree = "<group>";
+		};
+		EE5D2DF722FC9D98009EC13E /* Options */ = {
+			isa = PBXGroup;
+			children = (
+				EEA2BDC922F7152B00D0C72C /* ThematicBreakOptions.swift */,
+				EEA2BDC322F704F200D0C72C /* QuoteStripeOptions.swift */,
+				EEA2BDC522F7057600D0C72C /* ListItemOptions.swift */,
+				EE44848A2301E51C0065C836 /* CodeBlockOptions.swift */,
+			);
+			path = Options;
+			sourceTree = "<group>";
+		};
+		EE5D2DFA22FCA92F009EC13E /* Stylers */ = {
 			isa = PBXGroup;
 			children = (
 				EE5F2BA32262564A00B7C0F3 /* Styler.swift */,
+				EED8DA8D22BE404F00E54492 /* DownStyler.swift */,
+				EE4F77C222FF3F170026A983 /* DownStylerConfiguration.swift */,
 			);
 			path = Stylers;
 			sourceTree = "<group>";
 		};
+		EE5D2DFB22FCA946009EC13E /* Layout Managers */ = {
+			isa = PBXGroup;
+			children = (
+				EEFFFDDC22F4C8AB00036FD5 /* DownLayoutManager.swift */,
+				EEF8580E22FA101C0025370B /* DownDebugLayoutManager.swift */,
+			);
+			path = "Layout Managers";
+			sourceTree = "<group>";
+		};
+		EE5D2DFC22FCA953009EC13E /* Text Views */ = {
+			isa = PBXGroup;
+			children = (
+				EEA5C02822F58A0900B91D60 /* DownTextView.swift */,
+				EEF8581022FA11690025370B /* DownDebugTextView.swift */,
+			);
+			path = "Text Views";
+			sourceTree = "<group>";
+		};
+		EE5F2BA22262562F00B7C0F3 /* Styling */ = {
+			isa = PBXGroup;
+			children = (
+				EE5D2DFA22FCA92F009EC13E /* Stylers */,
+				EEFFFDD922F4C35000036FD5 /* Custom Attributes */,
+				EE5D2DFB22FCA946009EC13E /* Layout Managers */,
+				EE5D2DFC22FCA953009EC13E /* Text Views */,
+				EE48C7DE22EC99F3004815ED /* Attribute Collections */,
+				EE5D2DF722FC9D98009EC13E /* Options */,
+				EED8DA9522BECCF000E54492 /* Helpers */,
+			);
+			path = Styling;
+			sourceTree = "<group>";
+		};
+		EEC752BE22C4AE1300EC729C /* AST */ = {
+			isa = PBXGroup;
+			children = (
+				EE8F38CB22BFB2420056270E /* NodeTests.swift */,
+				EE64FEEF225BEB3900A35B34 /* VisitorTests.swift */,
+				EE408A3C23033B6B00E5278A /* ListItemPrefixGeneratorTests.swift */,
+			);
+			path = AST;
+			sourceTree = "<group>";
+		};
+		EED7D92025C6DA4300E52D18 /* Down */ = {
+			isa = PBXGroup;
+			children = (
+				EED7D94425C6DF2D00E52D18 /* Resources */,
+				D4CF88961CFF94B300F07FD1 /* Down.h */,
+				D4201EF01CFA59F2008EEC6E /* Down.swift */,
+				EEF1376D2259E4BA00D7DDE0 /* AST */,
+				D44875E71CFA6CF30037A624 /* Enums & Options */,
+				D43AE5C81CFFAE39006E1522 /* Extensions */,
+				D44875E21CFA6B120037A624 /* Renderers */,
+				D43AE5CB1CFFD068006E1522 /* Views */,
+			);
+			path = Down;
+			sourceTree = "<group>";
+		};
+		EED7D92725C6DB9100E52D18 /* DownTests */ = {
+			isa = PBXGroup;
+			children = (
+				EE59C30022ECF08E006EE8A8 /* Styler */,
+				907C64611EC120530095FEE1 /* Fixtures */,
+				D4201EC51CFA59A5008EEC6E /* BindingTests.swift */,
+				D41689B21CFFE28200E5802B /* DownViewTests.swift */,
+				D4F948DB1D00A4A800C9C0F6 /* NSAttributedStringTests.swift */,
+				D438696B1D00D27700E95A1F /* StringTests.swift */,
+				EEC752BE22C4AE1300EC729C /* AST */,
+			);
+			path = DownTests;
+			sourceTree = "<group>";
+		};
+		EED7D94425C6DF2D00E52D18 /* Resources */ = {
+			isa = PBXGroup;
+			children = (
+				D41689B51CFFE6BB00E5802B /* DownView.bundle */,
+				14C5E33621877FCD00D5380C /* DownView (macOS).bundle */,
+			);
+			path = Resources;
+			sourceTree = "<group>";
+		};
+		EED8DA9522BECCF000E54492 /* Helpers */ = {
+			isa = PBXGroup;
+			children = (
+				EEE2C7F022C2AFEF001B7054 /* ListItemParagraphStyler.swift */,
+				EE48C7DF22EC9A4D004815ED /* Extensions */,
+			);
+			path = Helpers;
+			sourceTree = "<group>";
+		};
 		EEEBEE45225D297700AE438D /* Nodes */ = {
 			isa = PBXGroup;
 			children = (
@@ -461,6 +702,7 @@
 				EEEBEE68225D2B1200AE438D /* Strong.swift */,
 				EEEBEE5A225D2A7E00AE438D /* Text.swift */,
 				EEEBEE58225D2A7000AE438D /* ThematicBreak.swift */,
+				26CABB92252B4D490032183C /* ChildSequence.swift */,
 			);
 			path = Nodes;
 			sourceTree = "<group>";
@@ -469,8 +711,9 @@
 			isa = PBXGroup;
 			children = (
 				EEEBEE71225D2F9200AE438D /* AttributedStringVisitor.swift */,
+				EE8F38CD22BFEDE50056270E /* ListItemPrefixGenerator.swift */,
 				EEEBEE6F225D2B9D00AE438D /* DebugVisitor.swift */,
-				EEF137702259E7E700D7DDE0 /* Vistor.swift */,
+				EEF137702259E7E700D7DDE0 /* Visitor.swift */,
 			);
 			path = Visitors;
 			sourceTree = "<group>";
@@ -480,11 +723,21 @@
 			children = (
 				EEEBEE45225D297700AE438D /* Nodes */,
 				EEEBEE6E225D2B8200AE438D /* Visitors */,
-				EE5F2BA22262562F00B7C0F3 /* Stylers */,
+				EE5F2BA22262562F00B7C0F3 /* Styling */,
 			);
 			path = AST;
 			sourceTree = "<group>";
 		};
+		EEFFFDD922F4C35000036FD5 /* Custom Attributes */ = {
+			isa = PBXGroup;
+			children = (
+				EEFFFDDA22F4C36800036FD5 /* ThematicBreakAttribute.swift */,
+				EEA5C02C22F5C96B00B91D60 /* QuoteStripeAttribute.swift */,
+				EE0E54F72300800E0070C83F /* BlockBackgroundColorAttribute.swift */,
+			);
+			path = "Custom Attributes";
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXHeadersBuildPhase section */
@@ -522,6 +775,7 @@
 				8A569F3D1E6B3E50008BE2AC /* Headers */,
 				14C5E33421877CDC00D5380C /* Resources */,
 				14CEAC38218774BC00039EDF /* Replace Bundle for macOS Platform */,
+				EED185ED26054F800051E616 /* Swiftlint */,
 			);
 			buildRules = (
 				8AE66BE41F848C3900ED4C98 /* PBXBuildRule */,
@@ -550,6 +804,9 @@
 				8AFAEB021E6E32E900E09B68 /* PBXTargetDependency */,
 			);
 			name = DownTests;
+			packageProductDependencies = (
+				EE3E7E802604019300170A52 /* SnapshotTesting */,
+			);
 			productName = "DownTests-macOS";
 			productReference = 8AFAEAFB1E6E32E900E09B68 /* DownTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
@@ -560,9 +817,9 @@
 		D4201E771CFA5151008EEC6E /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastSwiftUpdateCheck = 0820;
+				LastSwiftUpdateCheck = 1100;
 				LastUpgradeCheck = 1020;
-				ORGANIZATIONNAME = "Glazed Donut, LLC.";
+				ORGANIZATIONNAME = Down;
 				TargetAttributes = {
 					8A569F3F1E6B3E50008BE2AC = {
 						CreatedOnToolsVersion = 8.2.1;
@@ -585,6 +842,9 @@
 				Base,
 			);
 			mainGroup = D4201E761CFA5151008EEC6E;
+			packageReferences = (
+				EED7FED525E303000033E33A /* XCRemoteSwiftPackageReference "swift-snapshot-testing" */,
+			);
 			productRefGroup = D4201E811CFA5151008EEC6E /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -600,6 +860,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				EED7FED825E3133C0033E33A /* DownView (macOS).bundle in Resources */,
 				14C5E33521877CE900D5380C /* DownView.bundle in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -631,9 +892,27 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "# Type a script or drag a script file from your workspace to insert its path.\nRESOURCE_PATH=$SRCROOT/Resources\n\nFILENAME_IN_BUNDLE=DownView.bundle\n\nBUILD_APP_DIR=${BUILT_PRODUCTS_DIR}/${PRODUCT_NAME}.framework/Resources\n\necho \"$RESOURCE_PATH\"\necho \"$BUILD_APP_DIR\"\n\nif [ \"$PLATFORM_NAME\" == \"macosx\" ]; then\n    echo $BUILD_APP_DIR\n    rm -r \"$BUILD_APP_DIR/$FILENAME_IN_BUNDLE/\"\n    cp -R \"$RESOURCE_PATH/DownView (macOS).bundle\" \"$BUILD_APP_DIR/$FILENAME_IN_BUNDLE/\"\nfi\n";
+			shellScript = "# Type a script or drag a script file from your workspace to insert its path.\nRESOURCE_PATH=$SRCROOT/Sources/Down/Resources\n\nFILENAME_IN_BUNDLE=DownView.bundle\n\nBUILD_APP_DIR=${BUILT_PRODUCTS_DIR}/${PRODUCT_NAME}.framework/Resources\n\necho \"$RESOURCE_PATH\"\necho \"$BUILD_APP_DIR\"\n\nif [ \"$PLATFORM_NAME\" == \"macosx\" ]; then\n    echo $BUILD_APP_DIR\n    rm -r \"$BUILD_APP_DIR/$FILENAME_IN_BUNDLE/\"\n    cp -R \"$RESOURCE_PATH/DownView (macOS).bundle\" \"$BUILD_APP_DIR/$FILENAME_IN_BUNDLE/\"\nfi\n";
 			showEnvVarsInLog = 0;
 		};
+		EED185ED26054F800051E616 /* Swiftlint */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+			);
+			name = Swiftlint;
+			outputFileListPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "if which swiftlint >/dev/null; then\n  swiftlint\nelse\n  echo \"warning: SwiftLint not installed, download from https://github.com/realm/SwiftLint\"\nfi\n";
+		};
 /* End PBXShellScriptBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
@@ -648,21 +927,39 @@
 				EEEBEE70225D2B9D00AE438D /* DebugVisitor.swift in Sources */,
 				EEEBEE59225D2A7000AE438D /* ThematicBreak.swift in Sources */,
 				8A569F481E6B3ED2008BE2AC /* DownView.swift in Sources */,
+				EE4F77C322FF3F170026A983 /* DownStylerConfiguration.swift in Sources */,
 				8A569F591E6B3ED9008BE2AC /* houdini_html_u.c in Sources */,
 				EEEBEE63225D2AD400AE438D /* HtmlInline.swift in Sources */,
 				8A569F621E6B3ED9008BE2AC /* node.c in Sources */,
+				EE4484932301F2DB0065C836 /* CGRect+Helpers.swift in Sources */,
+				26CABB93252B4D490032183C /* ChildSequence.swift in Sources */,
 				EEEBEE6D225D2B3200AE438D /* Image.swift in Sources */,
+				EED8DA9722BECD7500E54492 /* FontCollection.swift in Sources */,
 				EEEBEE4D225D2A0200AE438D /* Item.swift in Sources */,
+				EEF8580F22FA101C0025370B /* DownDebugLayoutManager.swift in Sources */,
 				8A569F6F1E6B3EDE008BE2AC /* DownAttributedStringRenderable.swift in Sources */,
 				EEEBEE55225D2A4E00AE438D /* Paragraph.swift in Sources */,
+				EEBE62F025E28F3D005CCAD6 /* BundleHelper.swift in Sources */,
 				8A569F721E6B3EDE008BE2AC /* DownHTMLRenderable.swift in Sources */,
+				EED8DA9422BECC2100E54492 /* UIFont+Traits.swift in Sources */,
+				EE44848B2301E51C0065C836 /* CodeBlockOptions.swift in Sources */,
+				EE4484912301F2920065C836 /* CGPoint+Translate.swift in Sources */,
+				EEFFFDDB22F4C36800036FD5 /* ThematicBreakAttribute.swift in Sources */,
+				EEE2C7F122C2AFEF001B7054 /* ListItemParagraphStyler.swift in Sources */,
 				8A569F581E6B3ED9008BE2AC /* houdini_html_e.c in Sources */,
 				EEEBEE5D225D2A8F00AE438D /* SoftBreak.swift in Sources */,
+				EE48C7D922EC9250004815ED /* ParagraphStyleCollection.swift in Sources */,
 				EEEBEE6B225D2B2200AE438D /* Link.swift in Sources */,
 				8A569F531E6B3ED9008BE2AC /* commonmark.c in Sources */,
+				EEA2BDC422F704F200D0C72C /* QuoteStripeOptions.swift in Sources */,
 				8A569F4A1E6B3ED9008BE2AC /* buffer.c in Sources */,
+				EED8DA9222BECBF200E54492 /* NSMutableAttributedString+Attributes.swift in Sources */,
+				EED8DA9022BECBAE00E54492 /* NSAttributedString+Helpers.swift in Sources */,
+				EEFFFDDD22F4C8AB00036FD5 /* DownLayoutManager.swift in Sources */,
 				8A569F771E6B3EE3008BE2AC /* String+ToHTML.swift in Sources */,
 				8A569F751E6B3EDE008BE2AC /* DownRenderable.swift in Sources */,
+				EEA2BDC622F7057600D0C72C /* ListItemOptions.swift in Sources */,
+				EE8F38CE22BFEDE50056270E /* ListItemPrefixGenerator.swift in Sources */,
 				8A569F741E6B3EDE008BE2AC /* DownXMLRenderable.swift in Sources */,
 				8A569F6B1E6B3ED9008BE2AC /* utf8.c in Sources */,
 				8A569F791E6B3EE7008BE2AC /* DownOptions.swift in Sources */,
@@ -676,21 +973,27 @@
 				8A569F701E6B3EDE008BE2AC /* DownCommonMarkRenderable.swift in Sources */,
 				8A569F7A1E6B3EEA008BE2AC /* Down.swift in Sources */,
 				EE5F2BA42262564A00B7C0F3 /* Styler.swift in Sources */,
+				EEA5C02922F58A0900B91D60 /* DownTextView.swift in Sources */,
 				8A569F731E6B3EDE008BE2AC /* DownLaTeXRenderable.swift in Sources */,
 				8A569F781E6B3EE7008BE2AC /* DownErrors.swift in Sources */,
 				8A569F5C1E6B3ED9008BE2AC /* inlines.c in Sources */,
+				EE48C7DB22EC946F004815ED /* ColorCollection.swift in Sources */,
+				EEA5C02D22F5C96B00B91D60 /* QuoteStripeAttribute.swift in Sources */,
 				8A569F571E6B3ED9008BE2AC /* houdini_href_e.c in Sources */,
 				8A569F4D1E6B3ED9008BE2AC /* cmark.c in Sources */,
 				EEEBEE65225D2AE800AE438D /* CustomInline.swift in Sources */,
+				EE0E54F82300800E0070C83F /* BlockBackgroundColorAttribute.swift in Sources */,
 				EEF1376F2259E53400D7DDE0 /* Node.swift in Sources */,
 				8A569F6D1E6B3ED9008BE2AC /* xml.c in Sources */,
 				8A569F6E1E6B3EDE008BE2AC /* DownASTRenderable.swift in Sources */,
+				EEF8581122FA11690025370B /* DownDebugTextView.swift in Sources */,
 				EEEBEE5B225D2A7E00AE438D /* Text.swift in Sources */,
 				EEEBEE4F225D2A1400AE438D /* CodeBlock.swift in Sources */,
+				EED8DA8E22BE404F00E54492 /* DownStyler.swift in Sources */,
 				EEEBEE5F225D2AA700AE438D /* LineBreak.swift in Sources */,
 				EEEBEE61225D2AC000AE438D /* Code.swift in Sources */,
 				8A569F491E6B3ED9008BE2AC /* blocks.c in Sources */,
-				EEF137712259E7E700D7DDE0 /* Vistor.swift in Sources */,
+				EEF137712259E7E700D7DDE0 /* Visitor.swift in Sources */,
 				EEEBEE53225D2A3C00AE438D /* CustomBlock.swift in Sources */,
 				EEEBEE69225D2B1200AE438D /* Strong.swift in Sources */,
 				EEEBEE47225D298D00AE438D /* Document.swift in Sources */,
@@ -700,6 +1003,7 @@
 				EEEBEE49225D29C200AE438D /* BlockQuote.swift in Sources */,
 				8A569F651E6B3ED9008BE2AC /* references.c in Sources */,
 				EEEBEE67225D2AF900AE438D /* Emphasis.swift in Sources */,
+				EEA2BDCA22F7152B00D0C72C /* ThematicBreakOptions.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -707,8 +1011,23 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				EE3E7E54260400F900170A52 /* ThematicBreakSyleTests.swift in Sources */,
+				EE3E7E4D260400F500170A52 /* BlockQuoteStyleTests.swift in Sources */,
+				EE97253E22C130D8004D3B3A /* NSMutableAttributedString+AttributesTests.swift in Sources */,
+				EE3E7E622604010000170A52 /* InlineStyleTests.swift in Sources */,
+				EE3E7E702604010700170A52 /* StylerTestSuite.swift in Sources */,
+				EE3E7E692604010300170A52 /* ListItemStyleTests.swift in Sources */,
+				EE3E7E46260400F100170A52 /* CodeBlockStyleTests.swift in Sources */,
+				EE97254322C14B79004D3B3A /* NSAttributedString+HelpersTests.swift in Sources */,
 				8AFAEB091E6E331700E09B68 /* StringTests.swift in Sources */,
-				EE64FEF0225BEB3900A35B34 /* VisitorTests.swift in Sources */,
+				EE3E7E5B260400FC00170A52 /* HeadingStyleTests.swift in Sources */,
+				EE408A3D23033B6B00E5278A /* ListItemPrefixGeneratorTests.swift in Sources */,
+				EE8F38CC22BFB2420056270E /* NodeTests.swift in Sources */,
+				EE3E7E3F260400EE00170A52 /* LinkStyleTests.swift in Sources */,
+				EE3E7E38260400E800170A52 /* DownDebugLayoutManagerTests.swift in Sources */,
+				EE408A39230338B600E5278A /* CGPointTranslateTests.swift in Sources */,
+				EE408A3B2303399B00E5278A /* CGRectHelpersTests.swift in Sources */,
+				EE3E7E88260401F000170A52 /* VisitorTests.swift in Sources */,
 				8AFAEB071E6E331700E09B68 /* DownViewTests.swift in Sources */,
 				8AFAEB061E6E331700E09B68 /* BindingTests.swift in Sources */,
 				8AFAEB081E6E331700E09B68 /* NSAttributedStringTests.swift in Sources */,
@@ -739,12 +1058,12 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
-				INFOPLIST_FILE = "Resources/Down-Info.plist";
+				INFOPLIST_FILE = "Supporting Files/Down-Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SKIP_INSTALL = YES;
-				SWIFT_INCLUDE_PATHS = "${SRCROOT}/Source/cmark";
-				SWIFT_VERSION = 5.0;
+				SWIFT_INCLUDE_PATHS = "${SRCROOT}/Sources/cmark";
+				"VALID_ARCHS[sdk=iphonesimulator*]" = "i386 x86_64 arm64";
 			};
 			name = Debug;
 		};
@@ -761,12 +1080,12 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
-				INFOPLIST_FILE = "Resources/Down-Info.plist";
+				INFOPLIST_FILE = "Supporting Files/Down-Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SKIP_INSTALL = YES;
-				SWIFT_INCLUDE_PATHS = "${SRCROOT}/Source/cmark";
-				SWIFT_VERSION = 5.0;
+				SWIFT_INCLUDE_PATHS = "${SRCROOT}/Sources/cmark";
+				"VALID_ARCHS[sdk=iphonesimulator*]" = "i386 x86_64 arm64";
 			};
 			name = Release;
 		};
@@ -774,11 +1093,17 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 90A40A9A1EC0309A004F2E91 /* Universal-Target-Base.xcconfig */;
 			buildSettings = {
-				INFOPLIST_FILE = "Resources/DownTests-Info.plist";
-				PRODUCT_BUNDLE_IDENTIFIER = com.glazeddonut.DownTests;
-				SWIFT_VERSION = 5.0;
+				DEVELOPMENT_TEAM = "";
+				FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)/Carthage/Build/iOS",
+				);
+				INFOPLIST_FILE = "Supporting Files/DownTests-Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.downMarkdown.DownTests;
 				"TARGETED_DEVICE_FAMILY[sdk=appletvos*]" = 3;
 				"TARGETED_DEVICE_FAMILY[sdk=appletvsimulator*]" = 3;
+				TVOS_DEPLOYMENT_TARGET = 13.0;
 			};
 			name = Debug;
 		};
@@ -786,11 +1111,17 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 90A40A9A1EC0309A004F2E91 /* Universal-Target-Base.xcconfig */;
 			buildSettings = {
-				INFOPLIST_FILE = "Resources/DownTests-Info.plist";
-				PRODUCT_BUNDLE_IDENTIFIER = com.glazeddonut.DownTests;
-				SWIFT_VERSION = 5.0;
+				DEVELOPMENT_TEAM = "";
+				FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)/Carthage/Build/iOS",
+				);
+				INFOPLIST_FILE = "Supporting Files/DownTests-Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.downMarkdown.DownTests;
 				"TARGETED_DEVICE_FAMILY[sdk=appletvos*]" = 3;
 				"TARGETED_DEVICE_FAMILY[sdk=appletvsimulator*]" = 3;
+				TVOS_DEPLOYMENT_TARGET = 13.0;
 			};
 			name = Release;
 		};
@@ -847,12 +1178,11 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
-				PRODUCT_BUNDLE_IDENTIFIER = "com.glazeddonut.$(TARGET_NAME:c99-identifier)";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.downMarkdown.$(TARGET_NAME:c99-identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -905,11 +1235,11 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				PRODUCT_BUNDLE_IDENTIFIER = "com.glazeddonut.$(TARGET_NAME:c99-identifier)";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.downMarkdown.$(TARGET_NAME:c99-identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -948,6 +1278,25 @@
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
+
+/* Begin XCRemoteSwiftPackageReference section */
+		EED7FED525E303000033E33A /* XCRemoteSwiftPackageReference "swift-snapshot-testing" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/pointfreeco/swift-snapshot-testing.git";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 1.8.2;
+			};
+		};
+/* End XCRemoteSwiftPackageReference section */
+
+/* Begin XCSwiftPackageProductDependency section */
+		EE3E7E802604019300170A52 /* SnapshotTesting */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = EED7FED525E303000033E33A /* XCRemoteSwiftPackageReference "swift-snapshot-testing" */;
+			productName = SnapshotTesting;
+		};
+/* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = D4201E771CFA5151008EEC6E /* Project object */;
 }

Down.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -2,6 +2,6 @@
 <Workspace
    version = "1.0">
    <FileRef
-      location = "self:Down.xcodeproj">
+      location = "self:">
    </FileRef>
 </Workspace>

Down.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,16 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "SnapshotTesting",
+        "repositoryURL": "https://github.com/pointfreeco/swift-snapshot-testing.git",
+        "state": {
+          "branch": null,
+          "revision": "c466812aa2e22898f27557e2e780d3aad7a27203",
+          "version": "1.8.2"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Down.xcodeproj/xcshareddata/xcschemes/Down.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1130"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,8 +26,17 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      codeCoverageEnabled = "YES"
-      shouldUseLaunchSchemeArgsEnv = "YES">
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      codeCoverageEnabled = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "8A569F3F1E6B3E50008BE2AC"
+            BuildableName = "Down.framework"
+            BlueprintName = "Down"
+            ReferencedContainer = "container:Down.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -40,17 +49,6 @@
             </BuildableReference>
          </TestableReference>
       </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "8A569F3F1E6B3E50008BE2AC"
-            BuildableName = "Down.framework"
-            BlueprintName = "Down"
-            ReferencedContainer = "container:Down.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -71,8 +69,6 @@
             ReferencedContainer = "container:Down.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

LinuxMain.swift

@@ -0,0 +1,7 @@
+import XCTest
+
+var tests = [XCTestCaseEntry]()
+
+// FIXME: Run on macOS `swift test --generate-linuxmain` and maintain Linux Tests.
+
+XCTMain(tests)

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.3
 
 import PackageDescription
 
@@ -7,31 +7,58 @@ let package = Package(
     platforms: [
         .macOS("10.11"),
         .iOS("9.0"),
-        .tvOS("9.0"),
-        .watchOS("2.0"),
+        .tvOS("9.0")
     ],
     products: [
-    .library(
-        name: "Down",
-        targets: ["Down"]),
+        .library(
+            name: "Down",
+            targets: ["Down"]
+        )
     ],
-    dependencies: [],
     targets: [
         .target(
             name: "libcmark",
             dependencies: [],
-            path: "Source/cmark",
-            exclude: ["include"],
-            publicHeadersPath: "./"),
+            path: "Sources/cmark",
+            exclude: [
+              "include",
+              "case_fold_switch.inc",
+              "entities.inc",
+              "COPYING"
+            ],
+            publicHeadersPath: "./"
+        ),
         .target(
             name: "Down",
             dependencies: ["libcmark"],
-            path: "Source/",
-            exclude: ["cmark", "Down.h"]),
+            path: "Sources/Down",
+            exclude: ["Down.h"],
+          resources: [
+            .copy("Resources/DownView.bundle"),
+            .copy("Resources/DownView (macOS).bundle"),
+          ]
+        ),
         .testTarget(
             name: "DownTests",
             dependencies: ["Down"],
-            path: "Tests/",
-            exclude: ["Fixtures", "DownViewTests.swift"]),
-    ]
+            path: "Tests/DownTests",
+            exclude: [
+                "AST/VisitorTests.swift",
+                "AST/__Snapshots__",
+                "DownViewTests.swift",
+                "Fixtures",
+                "Styler/__Snapshots__",
+                "Styler/BlockQuoteStyleTests.swift",
+                "Styler/CodeBlockStyleTests.swift",
+                "Styler/DownDebugLayoutManagerTests.swift",
+                "Styler/HeadingStyleTests.swift",
+                "Styler/LinkStyleTests.swift",
+                "Styler/InlineStyleTests.swift",
+                "Styler/ListItemStyleTests.swift",
+                "Styler/StylerTestSuite.swift",
+                "Styler/ThematicBreakSyleTests.swift"
+            ]
+        )
+    ],
+    swiftLanguageVersions: [.v5]
 )

README.md

@@ -1,42 +1,59 @@
 ## Down
-[![Build Status](https://travis-ci.org/iwasrobbed/Down.svg?branch=master)](https://travis-ci.org/iwasrobbed/Down)
-[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/iwasrobbed/Down/blob/master/LICENSE)
-[![CocoaPods](https://img.shields.io/cocoapods/v/Down.svg?maxAge=10800)]()
+[![Build Status](https://travis-ci.com/johnxnguyen/Down.svg?branch=master)](https://travis-ci.com/johnxnguyen/Down)
+[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/johnxnguyen/Down/blob/master/LICENSE)
+[![CocoaPods](https://img.shields.io/cocoapods/v/Down)](https://cocoapods.org/pods/Down)
 [![Swift 5](https://img.shields.io/badge/language-Swift-blue.svg)](https://swift.org)
 [![macOS](https://img.shields.io/badge/OS-macOS-orange.svg)](https://developer.apple.com/macos/)
 [![iOS](https://img.shields.io/badge/OS-iOS-orange.svg)](https://developer.apple.com/ios/)
 [![tvOS](https://img.shields.io/badge/OS-tvOS-orange.svg)](https://developer.apple.com/tvos/)
-[![Coverage Status](https://coveralls.io/repos/github/iwasrobbed/Down/badge.svg?branch=master)](https://coveralls.io/github/iwasrobbed/Down?branch=master)
+[![Linux](https://img.shields.io/badge/OS-Linux-orange.svg)](https://www.linux.org/)
+[![Code Coverage](https://codecov.io/gh/johnxnguyen/Down/branch/master/graph/badge.svg)](https://codecov.io/gh/johnxnguyen/Down)
 
 Blazing fast Markdown (CommonMark) rendering in Swift, built upon [cmark v0.29.0](https://github.com/commonmark/cmark).
 
-Is your app using it? [Let us know!](mailto:rob@robphillips.me)
+Is your app using it? [Let us know!](mailto:polyxo@protonmail.com)
+
+If you're looking for `iwasrobbed/Down`, you found it! [Rob Phillips](https://github.com/iwasrobbed), the originator of this repository,
+has transferred it to me as I will be the primary maintainer from now on. Thanks to Rob for bringing Down as far as it has come and for
+entrusting me with its care.
+
+All existing references to `iwasrobbed/Down` should redirect to this repository. However, It is recommended to update those urls to point
+to this repository.
 
 #### Maintainers
 
-- [Rob Phillips](https://github.com/iwasrobbed)
 - [John Nguyen](https://github.com/johnxnguyen)
+- [Rob Phillips](https://github.com/iwasrobbed)
 - [Keaton Burleson](https://github.com/128keaton)
 - [phoney](https://github.com/phoney)
 - [Tony Arnold](https://github.com/tonyarnold)
 - [Ken Harris](https://github.com/kengruven)
 - [Chris Zielinski](https://github.com/chriszielinski)
-- [Other contributors](https://github.com/iwasrobbed/Down/graphs/contributors) 🙌
+- [Other contributors](https://github.com/johnxnguyen/Down/graphs/contributors) 🙌
 
 ### Installation
 
-Note: Swift 5 support is now on the `master` branch and any tag >= 0.8.1 (Swift 4 is >= 0.4.x, Swift 3 is 0.3.x)
+Note: Swift support is summarized in the table below.
 
-Quickly install using [CocoaPods](https://cocoapods.org):
+|Swift Version|Tag|
+| --- | --- |
+| Swift 5.1 | >= 0.9.0 |
+| Swift 5.0 | >= 0.8.1 |
+| Swift 4 | >= 0.4.x |
+| Swift 3 | 0.3.x |
+
+ now on the `master` branch and any tag >= 0.8.1 (Swift 4 is >= 0.4.x, Swift 3 is 0.3.x)
+
+#### Quickly install using [CocoaPods](https://cocoapods.org):
 
 ```ruby
 pod 'Down'
 ```
 
-Or [Carthage](https://github.com/Carthage/Carthage):
+#### Install using [Carthage](https://github.com/Carthage/Carthage):
 
 ```
-github "iwasrobbed/Down"
+github "johnxnguyen/Down"
 ```
 Due to limitations in Carthage regarding platform specification, you need to define the platform with Carthage.
 
@@ -44,7 +61,12 @@ e.g.
 
 ```carthage update --platform iOS```
 
-Or manually install:
+#### Install using [Swift Package Manager](https://github.com/apple/swift-package-manager):
+
+To add *Down* to your project, select `File → Swift Packages → Add Package Dependency` and enter the GitHub URL for *Down*. 
+See [Adding Package Dependencies to Your App](https://developer.apple.com/documentation/xcode/adding_package_dependencies_to_your_app) for detailed instructions.
+
+#### Or manually install:
 
 1. Clone this repository
 2. Drag and drop the Down project into your workspace file, adding the framework in the embedded framework section
@@ -92,27 +114,27 @@ Meta example of rendering this README:
 The `Down` struct has everything you need if you just want out-of-the-box setup for parsing and conversion.
 
 ```swift
-let down = Down(markdownString: "## [Down](https://github.com/iwasrobbed/Down)")
+let down = Down(markdownString: "## [Down](https://github.com/johnxnguyen/Down)")
 
 // Convert to HTML
 let html = try? down.toHTML()
-// "<h2><a href=\"https://github.com/iwasrobbed/Down\">Down</a></h2>\n"
+// "<h2><a href=\"https://github.com/johnxnguyen/Down\">Down</a></h2>\n"
 
 // Convert to XML
 let xml = try? down.toXML()
-// "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE document SYSTEM \"CommonMark.dtd\">\n<document xmlns=\"http://commonmark.org/xml/1.0\">\n  <heading level=\"2\">\n    <link destination=\"https://github.com/iwasrobbed/Down\" title=\"\">\n      <text>Down</text>\n    </link>\n  </heading>\n</document>\n"
+// "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE document SYSTEM \"CommonMark.dtd\">\n<document xmlns=\"http://commonmark.org/xml/1.0\">\n  <heading level=\"2\">\n    <link destination=\"https://github.com/johnxnguyen/Down\" title=\"\">\n      <text>Down</text>\n    </link>\n  </heading>\n</document>\n"
 
 // Convert to groff man
 let man = try? down.toGroff()
-// ".SS\nDown (https://github.com/iwasrobbed/Down)\n"
+// ".SS\nDown (https://github.com/johnxnguyen/Down)\n"
 
 // Convert to LaTeX
 let latex = try? down.toLaTeX()
-// "\\subsection{\\href{https://github.com/iwasrobbed/Down}{Down}}\n"
+// "\\subsection{\\href{https://github.com/johnxnguyen/Down}{Down}}\n"
 
 // Convert to CommonMark Markdown
 let commonMark = try? down.toCommonMark()
-// "## [Down](https://github.com/iwasrobbed/Down)\n"
+// "## [Down](https://github.com/johnxnguyen/Down)\n"
 
 // Convert to an attributed string
 let attributedString = try? down.toAttributedString()
@@ -166,11 +188,11 @@ public struct MarkdownToHTML: DownHTMLRenderable {
 `DownView` can be configured with a custom bundle using your own HTML / CSS or to do things like supporting
 Dynamic Type or custom fonts, etc. It's completely configurable.
 
-This option can be found in [DownView's instantiation function](https://github.com/iwasrobbed/Down/blob/master/Source/Views/DownView.swift#L26).
+This option can be found in [DownView's instantiation function](https://github.com/johnxnguyen/Down/blob/master/Source/Views/DownView.swift#L26).
 
 ##### Prevent zoom
 
-The default implementation of the `DownView` allows for zooming in the rendered content. If you want to disable this, then you’ll need to instantiate the `DownView` with a custom bundle where the `viewport` in `index.html` has been assigned `user-scalable=no`. More info can be found [here](https://github.com/iwasrobbed/Down/pull/30).
+The default implementation of the `DownView` allows for zooming in the rendered content. If you want to disable this, then you’ll need to instantiate the `DownView` with a custom bundle where the `viewport` in `index.html` has been assigned `user-scalable=no`. More info can be found [here](https://github.com/johnxnguyen/Down/pull/30).
 
 ### Options
 
@@ -199,10 +221,18 @@ public static let hardBreaks = DownOptions(rawValue: 1 << 2)
  `file:`, and `data:`, except for `image/png`, `image/gif`,
  `image/jpeg`, or `image/webp` mime types).  Raw HTML is replaced
  by a placeholder HTML comment. Unsafe links are replaced by
- empty strings.
+ empty strings. Note that this option is provided for backwards
+ compatibility, but safe mode is now the default.
 */
 public static let safe = DownOptions(rawValue: 1 << 3)
 
+/**
+ Allow raw HTML and unsafe links. Note that safe mode is now
+ the default, and the unsafe option must be used if rendering
+ of raw HTML and unsafe links is desired.
+*/
+public static let unsafe = DownOptions(rawValue: 1 << 17)
+
 // MARK: - Parsing Options
 
 /**
@@ -220,6 +250,11 @@ public static let validateUTF8 = DownOptions(rawValue: 1 << 5)
  Convert straight quotes to curly, --- to em dashes, -- to en dashes.
 */
 public static let smart = DownOptions(rawValue: 1 << 6)
+
+/**
+ Combine smart typography with HTML rendering.
+*/
+public static let smartUnsaFe = DownOptions(rawValue: (1 << 17) + (1 << 6))
 ```
 
 ### Supports

Resources/Configurations/Deployment-Targets.xcconfig

@@ -1,4 +0,0 @@
-IPHONEOS_DEPLOYMENT_TARGET = 8.0
-MACOSX_DEPLOYMENT_TARGET = 10.11
-TVOS_DEPLOYMENT_TARGET = 9.0
-WATCHOS_DEPLOYMENT_TARGET = 3.0

Source/AST/Nodes/BaseNode.swift

@@ -1,38 +0,0 @@
-//
-//  BaseNode.swift
-//  Down
-//
-//  Created by John Nguyen on 21.04.19.
-//
-//
-
-import Foundation
-import libcmark
-
-public class BaseNode: Node {
-    
-    public let cmarkNode: CMarkNode
-    
-    public private(set) lazy var children: [Node] = {
-        var result: [Node] = []
-        var child = cmark_node_first_child(cmarkNode)
-        
-        while let raw = child {
-            
-            guard let node = raw.wrap() else {
-                assertionFailure("Couldn't wrap node of type: \(raw.type)")
-                continue
-            }
-            
-            result.append(node)
-            child = cmark_node_next(child)
-        }
-        
-        return result
-    }()
-    
-    init(cmarkNode: CMarkNode) {
-        self.cmarkNode = cmarkNode
-    }
-    
-}

Source/AST/Nodes/List.swift

@@ -1,57 +0,0 @@
-//
-//  List.swift
-//  Down
-//
-//  Created by John Nguyen on 09.04.19.
-//
-
-import Foundation
-import libcmark
-
-public class List: BaseNode {
-    
-    public enum ListType: CustomDebugStringConvertible {
-        case bullet
-        case ordered(start: Int)
-        
-        public var debugDescription: String {
-            switch self {
-            case .bullet: return "Bullet"
-            case .ordered(let start): return "Ordered (start: \(start)"
-            }
-        }
-        
-        init?(cmarkNode: CMarkNode) {
-            switch cmarkNode.listType {
-            case CMARK_BULLET_LIST: self = .bullet
-            case CMARK_ORDERED_LIST: self = .ordered(start: cmarkNode.listStart)
-            default: return nil
-            }
-        }
-    }
-    
-    ///////////////////////////////////////////////////////////////////////////
-    
-    /// The type of the list, either bullet or ordered.
-    public lazy var listType: ListType = {
-        guard let type = ListType(cmarkNode: cmarkNode) else {
-            assertionFailure("Unsupported or missing list type. Defaulting to .bullet.")
-            return .bullet
-        }
-        
-        return type
-    }()
-    
-    /// The number of items in the list.
-    public lazy var numberOfItems: Int = children.count
-    
-}
-
-
-// MARK: - Debug
-
-extension List: CustomDebugStringConvertible {
-    public var debugDescription: String {
-        return "List - type: \(listType)"
-    }
-}

Source/AST/Stylers/Styler.swift

@@ -1,40 +0,0 @@
-//
-//  Styler.swift
-//  Down
-//
-//  Created by John Nguyen on 13.04.19.
-//  Copyright © 2019 Glazed Donut, LLC. All rights reserved.
-//
-
-import Foundation
-
-/// A styler is an object that manipulates the appearance of attributed strings generated
-/// for each particular markdown node. The attributed string passed into each method is
-/// mutable, so attributes (and even text) can be added, set, and removed.
-///
-/// A styler is used in conjunction with an instance of `AttributedStringVisitor` in order
-/// to generate an NSAttributedString from an abstract syntax tree.
-public protocol Styler {
-    func style(document str: NSMutableAttributedString)
-    func style(blockQuote str: NSMutableAttributedString)
-    func style(list str: NSMutableAttributedString)
-    func style(item str: NSMutableAttributedString)
-    func style(codeBlock str: NSMutableAttributedString, fenceInfo: String?)
-    func style(htmlBlock str: NSMutableAttributedString)
-    func style(customBlock str: NSMutableAttributedString)
-    func style(paragraph str: NSMutableAttributedString)
-    func style(heading str: NSMutableAttributedString, level: Int)
-    func style(thematicBreak str: NSMutableAttributedString)
-    func style(text str: NSMutableAttributedString)
-    func style(softBreak str: NSMutableAttributedString)
-    func style(lineBreak str: NSMutableAttributedString)
-    func style(code str: NSMutableAttributedString)
-    func style(htmlInline str: NSMutableAttributedString)
-    func style(customInline str: NSMutableAttributedString)
-    func style(emphasis str: NSMutableAttributedString)
-    func style(strong str: NSMutableAttributedString)
-    func style(link str: NSMutableAttributedString, title: String?, url: String?)
-    func style(image str: NSMutableAttributedString, title: String?, url: String?)
-    
-    var listPrefixAttributes: [NSAttributedString.Key: Any] { get }
-}

Source/AST/Visitors/AttributedStringVisitor.swift

@@ -1,203 +0,0 @@
-//
-//  AttributedStringVisitor.swift
-//  Down
-//
-//  Created by John Nguyen on 09.04.19.
-//
-
-import Foundation
-
-/// This class is used to generated an `NSMutableAttributedString` from the abstract syntax
-/// tree produced by a markdown string. It traverses the tree to construct substrings
-/// represented at each node and uses an instance of `Styler` to apply the visual attributes.
-/// These substrings are joined together to produce the final result.
-public class AttributedStringVisitor {
-    
-    private let styler: Styler
-    private let options: DownOptions
-    
-    /// Creates a new instance with the given styler and options.
-    ///
-    /// - parameters:
-    ///     - styler: used to style the markdown elements.
-    ///     - options: may be used to modify rendering.
-    public init(styler: Styler, options: DownOptions = .default) {
-        self.styler = styler
-        self.options = options
-    }
-}
-
-extension AttributedStringVisitor: Visitor {
-    public typealias Result = NSMutableAttributedString
-    
-    public func visit(document node: Document) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        styler.style(document: s)
-        return s
-    }
-    
-    public func visit(blockQuote node: BlockQuote) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        if node.hasSuccessor { s.append(.paragraphSeparator) }
-        styler.style(blockQuote: s)
-        return s
-    }
-    
-    public func visit(list node: List) -> NSMutableAttributedString {
-        let items = visitChildren(of: node)
-        
-        // Prepend prefixes to each item.
-        items.enumerated().forEach { index, item in
-            let prefix: String
-            switch node.listType {
-            case .bullet: prefix = "•\t"
-            case .ordered(let start): prefix = "\(start + index).\t"
-            }
-            
-            let attrPrefix = NSAttributedString(string: prefix, attributes: styler.listPrefixAttributes)
-            item.insert(attrPrefix, at: 0)
-        }
-        
-        let s = items.joined
-        if node.hasSuccessor { s.append(.paragraphSeparator) }
-        styler.style(list: s)
-        return s
-    }
-    
-    public func visit(item node: Item) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        if node.hasSuccessor { s.append(.paragraphSeparator) }
-        styler.style(item: s)
-        return s
-    }
-    
-    public func visit(codeBlock node: CodeBlock) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(codeBlock: s, fenceInfo: node.fenceInfo)
-        return s
-    }
-    
-    public func visit(htmlBlock node: HtmlBlock) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(htmlBlock: s)
-        return s
-    }
-    
-    public func visit(customBlock node: CustomBlock) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(customBlock: s)
-        return s
-    }
-    
-    public func visit(paragraph node: Paragraph) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        if node.hasSuccessor { s.append(.paragraphSeparator) }
-        styler.style(paragraph: s)
-        return s
-    }
-    
-    public func visit(heading node: Heading) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        if node.hasSuccessor { s.append(.paragraphSeparator) }
-        styler.style(heading: s, level: node.headingLevel)
-        return s
-    }
-    
-    public func visit(thematicBreak node: ThematicBreak) -> NSMutableAttributedString {
-        let s = String.lineSeparator.attributed
-        styler.style(thematicBreak: s)
-        return s
-    }
-    
-    public func visit(text node: Text) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(text: s)
-        return s
-    }
-    
-    public func visit(softBreak node: SoftBreak) -> NSMutableAttributedString {
-        let s = (options.contains(.hardBreaks) ? String.lineSeparator : " ").attributed
-        styler.style(softBreak: s)
-        return s
-    }
-    
-    public func visit(lineBreak node: LineBreak) -> NSMutableAttributedString {
-        let s = String.lineSeparator.attributed
-        styler.style(lineBreak: s)
-        return s
-    }
-    
-    public func visit(code node: Code) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(code: s)
-        return s
-    }
-    
-    public func visit(htmlInline node: HtmlInline) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(htmlInline: s)
-        return s
-    }
-    
-    public func visit(customInline node: CustomInline) -> NSMutableAttributedString {
-        guard let s = node.literal?.attributed else { return .empty }
-        styler.style(customInline: s)
-        return s
-    }
-    
-    public func visit(emphasis node: Emphasis) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        styler.style(emphasis: s)
-        return s
-    }
-    
-    public func visit(strong node: Strong) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        styler.style(strong: s)
-        return s
-    }
-    
-    public func visit(link node: Link) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        styler.style(link: s, title: node.title, url: node.url)
-        return s
-    }
-    
-    public func visit(image node: Image) -> NSMutableAttributedString {
-        let s = visitChildren(of: node).joined
-        styler.style(image: s, title: node.title, url: node.url)
-        return s
-    }
-}
-
-// MARK: - Helper extentions
-
-private extension Sequence where Iterator.Element == NSMutableAttributedString {
-    var joined: NSMutableAttributedString {
-        return reduce(into: NSMutableAttributedString()) { $0.append($1) }
-    }
-}
-
-private extension String {
-    var attributed: NSMutableAttributedString {
-        return NSMutableAttributedString(string: self)
-    }
-}
-
-private extension NSAttributedString {
-    static var paragraphSeparator: NSAttributedString {
-        return "\n".attributed
-    }
-}
-
-private extension NSMutableAttributedString {
-    static var empty: NSMutableAttributedString {
-        return "".attributed
-    }
-}
-private extension String {
-    // https://lists.apple.com/archives/Cocoa-dev/2010/Dec/msg00347.html
-    static var lineSeparator: String {
-        return "\u{2028}"
-    }
-}

Source/Renderers/DownASTRenderable.swift

@@ -1,49 +0,0 @@
-//
-//  DownASTRenderable.swift
-//  Down
-//
-//  Created by Rob Phillips on 5/31/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
-//
-
-import Foundation
-import libcmark
-
-public protocol DownASTRenderable: DownRenderable {
-    func toAST(_ options: DownOptions) throws -> UnsafeMutablePointer<cmark_node>
-}
-
-extension DownASTRenderable {
-    /// Generates an abstract syntax tree from the `markdownString` property
-    ///
-    /// - Parameter options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: An abstract syntax tree representation of the Markdown input
-    /// - Throws: `MarkdownToASTError` if conversion fails
-    public func toAST(_ options: DownOptions = .default) throws -> UnsafeMutablePointer<cmark_node> {
-        return try DownASTRenderer.stringToAST(markdownString, options: options)
-    }
-}
-
-public struct DownASTRenderer {
-    /// Generates an abstract syntax tree from the given CommonMark Markdown string
-    ///
-    /// **Important:** It is the caller's responsibility to call `cmark_node_free(ast)` on the returned value
-    ///
-    /// - Parameters:
-    ///   - string: A string containing CommonMark Markdown
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: An abstract syntax tree representation of the Markdown input
-    /// - Throws: `MarkdownToASTError` if conversion fails
-    public static func stringToAST(_ string: String, options: DownOptions = .default) throws -> UnsafeMutablePointer<cmark_node> {
-        var tree: UnsafeMutablePointer<cmark_node>?
-        string.withCString {
-            let stringLength = Int(strlen($0))
-            tree = cmark_parse_document($0, stringLength, options.rawValue)
-        }
-
-        guard let ast = tree else {
-            throw DownErrors.markdownToASTError
-        }
-        return ast
-    }
-}

Sources/Down/AST/Nodes/BaseNode.swift

@@ -0,0 +1,37 @@
+//
+//  BaseNode.swift
+//  Down
+//
+//  Created by John Nguyen on 21.04.19.
+//
+//
+
+import Foundation
+import libcmark
+
+public class BaseNode: Node {
+
+    // MARK: - Properties
+
+    public let cmarkNode: CMarkNode
+
+    public private(set) lazy var children: [Node] = Array(childSequence)
+
+    public private(set) lazy var nestDepth: Int = {
+        var depth = 0
+        var next = cmarkNode.parent
+
+        while let current = next {
+            depth += current.type == cmarkNode.type ? 1 : 0
+            next = current.parent
+        }
+        return depth
+    }()
+
+    // MARK: - Life cycle
+
+    init(cmarkNode: CMarkNode) {
+        self.cmarkNode = cmarkNode
+    }
+
+}

Sources/Down/AST/Nodes/BlockQuote.swift

@@ -13,7 +13,9 @@ public class BlockQuote: BaseNode {}
 // MARK: - Debug
 
 extension BlockQuote: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Block Quote"
     }
+
 }

Sources/Down/AST/Nodes/ChildSequence.swift

@@ -0,0 +1,52 @@
+//
+//  ChildSequence.swift
+//  Down
+//
+//  Created by Sven Weidauer on 05.10.2020
+//
+
+import libcmark
+
+/// Sequence of child nodes.
+
+public struct ChildSequence: Sequence {
+
+    // MARK: - Properties
+
+    let node: CMarkNode
+
+    // MARK: - Methods
+
+    public func makeIterator() -> Iterator {
+        return Iterator(node: cmark_node_first_child(node))
+    }
+
+}
+
+// MARK: - Iterator
+
+public extension ChildSequence {
+
+    struct Iterator: IteratorProtocol {
+
+        // MARK: - Properties
+
+        var node: CMarkNode?
+
+        // MARK: - Methods
+
+        public mutating func next() -> Node? {
+            guard let node = node else { return nil }
+            defer { self.node = cmark_node_next(node) }
+
+            guard let result = node.wrap() else {
+                assertionFailure("Couldn't wrap node of type: \(node.type)")
+                return nil
+            }
+
+            return result
+        }
+
+    }
+
+}

Sources/Down/AST/Nodes/Code.swift

@@ -9,16 +9,21 @@ import Foundation
 import libcmark
 
 public class Code: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The code content, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
-    
+
 }
 
 // MARK: - Debug
 
 extension Code: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Code - \(literal ?? "nil")"
     }
+
 }

Sources/Down/AST/Nodes/CodeBlock.swift

@@ -9,10 +9,13 @@ import Foundation
 import libcmark
 
 public class CodeBlock: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The code content, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
-    
+
     /// The fence info is an optional string that trails the opening sequence of backticks.
     /// It can be used to provide some contextual information about the block, such as
     /// the name of a programming language.
@@ -24,14 +27,18 @@ public class CodeBlock: BaseNode {
     /// '''
     /// ```
     ///
+
     public private(set) lazy var fenceInfo: String? = cmarkNode.fenceInfo
-    
+
 }
 
 // MARK: - Debug
 
 extension CodeBlock: CustomDebugStringConvertible {
+
     public var debugDescription: String {
-        return "Code Block - \(literal ?? "nil"), fenceInfo: \(fenceInfo ?? "nil")"
+        let content = (literal ?? "nil").replacingOccurrences(of: "\n", with: "\\n")
+        return "Code Block - fenceInfo: \(fenceInfo ?? "nil"), content: \(content)"
     }
+
 }

Sources/Down/AST/Nodes/CustomBlock.swift

@@ -9,16 +9,21 @@ import Foundation
 import libcmark
 
 public class CustomBlock: BaseNode {
-    
+
+    // MARK: - Properfies
+
     /// The custom content, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
-    
+
 }
 
 // MARK: - Debug
 
 extension CustomBlock: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Custom Block - \(literal ?? "nil")"
     }
+
 }

Sources/Down/AST/Nodes/CustomInline.swift

@@ -9,15 +9,20 @@ import Foundation
 import libcmark
 
 public class CustomInline: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The custom content, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
 }
 
 // MARK: - Debug
 
 extension CustomInline: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Custom Inline - \(literal ?? "nil")"
     }
+
 }

Sources/Down/AST/Nodes/Document.swift

@@ -9,24 +9,30 @@ import Foundation
 import libcmark
 
 public class Document: BaseNode {
-    
+
+    // MARK: - Life cycle
+
     deinit {
-        // Frees the node and all its children.
         cmark_node_free(cmarkNode)
     }
-    
+
+    // MARK: - Methods
+
     /// Accepts the given visitor and return its result.
+
+    @discardableResult
     public func accept<T: Visitor>(_ visitor: T) -> T.Result {
         return visitor.visit(document: self)
     }
-    
-}
 
+}
 
 // MARK: - Debug
 
 extension Document: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Document"
     }
+
 }

Sources/Down/AST/Nodes/Emphasis.swift

@@ -13,7 +13,9 @@ public class Emphasis: BaseNode {}
 // MARK: - Debug
 
 extension Emphasis: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Emphasis"
     }
+
 }

Sources/Down/AST/Nodes/Heading.swift

@@ -9,15 +9,20 @@ import Foundation
 import libcmark
 
 public class Heading: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The level of the heading, a value between 1 and 6.
+
     public private(set) lazy var headingLevel: Int = cmarkNode.headingLevel
 }
 
 // MARK: - Debug
 
 extension Heading: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Heading - L\(headingLevel)"
     }
+
 }

Sources/Down/AST/Nodes/HtmlBlock.swift

@@ -9,16 +9,22 @@ import Foundation
 import libcmark
 
 public class HtmlBlock: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The html content, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
-    
+
 }
 
 // MARK: - Debug
 
 extension HtmlBlock: CustomDebugStringConvertible {
+
     public var debugDescription: String {
-        return "Html Block - \(literal ?? "nil")"
+        let content = (literal ?? "nil").replacingOccurrences(of: "\n", with: "\\n")
+        return "Html Block - content: \(content)"
     }
+
 }

Sources/Down/AST/Nodes/HtmlInline.swift

@@ -9,16 +9,21 @@ import Foundation
 import libcmark
 
 public class HtmlInline: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The html tag, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
-    
+
 }
 
 // MARK: - Debug
 
 extension HtmlInline: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Html Inline - \(literal ?? "nil")"
     }
+
 }

Sources/Down/AST/Nodes/Image.swift

@@ -9,7 +9,9 @@ import Foundation
 import libcmark
 
 public class Image: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The title of the image, if present.
     ///
     /// In the example below, the first line is a reference link, with the reference at the
@@ -21,9 +23,9 @@ public class Image: BaseNode {
     /// ...
     /// [<id>]: <url> "<title>"
     /// ```
-    ///
+
     public private(set) lazy var title: String? = cmarkNode.title
-    
+
     /// The url of the image, if present.
     ///
     /// For example:
@@ -31,15 +33,17 @@ public class Image: BaseNode {
     /// ```
     /// ![<text>](<url>)
     /// ```
-    ///
+
     public private(set) lazy var url: String? = cmarkNode.url
-    
+
 }
 
 // MARK: - Debug
 
 extension Image: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Image - title: \(title ?? "nil"), url: \(url ?? "nil"))"
     }
+
 }

Sources/Down/AST/Nodes/Item.swift

@@ -13,7 +13,9 @@ public class Item: BaseNode {}
 // MARK: - Debug
 
 extension Item: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Item"
     }
+
 }

Sources/Down/AST/Nodes/LineBreak.swift

@@ -13,7 +13,9 @@ public class LineBreak: BaseNode {}
 // MARK: - Debug
 
 extension LineBreak: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Line Break"
     }
+
 }

Sources/Down/AST/Nodes/Link.swift

@@ -9,7 +9,9 @@ import Foundation
 import libcmark
 
 public class Link: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The title of the link, if present.
     ///
     /// In the example below, the first line is a reference link, with the reference at the
@@ -21,9 +23,9 @@ public class Link: BaseNode {
     /// ...
     /// [<id>]: <url> "<title>"
     /// ```
-    ///
+
     public private(set) lazy var title: String? = cmarkNode.title
-    
+
     /// The url of the link, if present.
     ///
     /// For example:
@@ -31,15 +33,17 @@ public class Link: BaseNode {
     /// ```
     /// [<text>](<url>)
     /// ```
-    ///
+
     public private(set) lazy var url: String? = cmarkNode.url
-    
+
 }
 
 // MARK: - Debug
 
 extension Link: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Link - title: \(title ?? "nil"), url: \(url ?? "nil"))"
     }
+
 }

Sources/Down/AST/Nodes/List.swift

@@ -0,0 +1,107 @@
+//
+//  List.swift
+//  Down
+//
+//  Created by John Nguyen on 09.04.19.
+//
+
+import Foundation
+import libcmark
+
+public class List: BaseNode {
+
+    // MARK: - Properties
+
+    /// The type of the list, either bullet or ordered.
+
+    public lazy var listType: ListType = {
+        guard let type = ListType(cmarkNode: cmarkNode) else {
+            assertionFailure("Unsupported or missing list type. Defaulting to .bullet.")
+            return .bullet
+        }
+
+        return type
+    }()
+
+    /// The number of items in the list.
+
+    public lazy var numberOfItems: Int = children.count
+
+    /// Whether the list is "tight".
+    ///
+    /// If any of the list items are separated by a blank line, then this property is `false`. This value is
+    /// a hint to render the list with more (loose) or less (tight) spacing between items.
+
+    public lazy var isTight: Bool = cmark_node_get_list_tight(cmarkNode) == 1
+
+    /// The list delimiter.
+
+    public lazy var delimiter: Delimiter? = Delimiter(cmarkNode.listDelimiter)
+}
+
+// MARK: - List Type
+
+public extension List {
+
+    enum Delimiter {
+        case period
+        case paren
+
+        init?(_ cmark: cmark_delim_type) {
+            switch cmark {
+            case CMARK_NO_DELIM: return nil
+            case CMARK_PERIOD_DELIM: self = .period
+            case CMARK_PAREN_DELIM: self = .paren
+            default: preconditionFailure("Invalid delim type")
+            }
+        }
+    }
+
+    enum ListType: CustomDebugStringConvertible {
+        case bullet
+        case ordered(start: Int)
+
+        // MARK: - Properties
+
+        public var debugDescription: String {
+            switch self {
+            case .bullet: return "Bullet"
+            case .ordered(let start): return "Ordered (start: \(start))"
+            }
+        }
+
+        // MARK: - Life cycle
+
+        init?(cmarkNode: CMarkNode) {
+            switch cmarkNode.listType {
+            case CMARK_BULLET_LIST: self = .bullet
+            case CMARK_ORDERED_LIST: self = .ordered(start: cmarkNode.listStart)
+            default: return nil
+            }
+        }
+
+    }
+}
+
+// MARK: - Debug
+
+extension List: CustomDebugStringConvertible {
+
+    public var debugDescription: String {
+        var result = "List - type: \(listType), isTight: \(isTight)"
+        if let delim = delimiter {
+            result += ", delimiter: \(delim)"
+        }
+        return result
+    }
+
+}
+
+extension List.Delimiter: CustomDebugStringConvertible {
+    public var debugDescription: String {
+        switch self {
+        case .paren: return "paren"
+        case .period: return "period"
+        }
+    }
+}

Sources/Down/AST/Nodes/Node.swift

@@ -10,28 +10,43 @@ import libcmark
 
 /// A node is a wrapper of a raw `CMarkNode` belonging to the abstract syntax tree
 /// generated by cmark.
+
 public protocol Node {
+
     /// The wrapped node.
+
     var cmarkNode: CMarkNode { get }
-    
+
     /// The wrapped child nodes.
+
     var children: [Node] { get }
+
 }
 
 public extension Node {
+
     /// True iff the node has a sibling that succeeds it.
+
     var hasSuccessor: Bool {
         return cmark_node_next(cmarkNode) != nil
     }
+
+    /// Sequence of wrapped child nodes.
+
+    var childSequence: ChildSequence {
+        return ChildSequence(node: cmarkNode)
+    }
+
 }
 
 // MARK: - Helper extensions
 
 public typealias CMarkNode = UnsafeMutablePointer<cmark_node>
 
-public extension UnsafeMutablePointer where Pointee == cmark_node {
-    
+public extension CMarkNode {
+
     /// Wraps the cmark node referred to by this pointer.
+
     func wrap() -> Node? {
         switch type {
         case CMARK_NODE_DOCUMENT:       return Document(cmarkNode: self)
@@ -57,45 +72,55 @@ public extension UnsafeMutablePointer where Pointee == cmark_node {
         default:                        return nil
         }
     }
-    
+
+    var parent: CMarkNode? {
+        return cmark_node_parent(self)
+    }
+
     var type: cmark_node_type {
         return cmark_node_get_type(self)
     }
-    
+
     var literal: String? {
         return String(cString: cmark_node_get_literal(self))
     }
-    
+
     var fenceInfo: String? {
         return String(cString: cmark_node_get_fence_info(self))
     }
-    
+
     var headingLevel: Int {
         return Int(cmark_node_get_heading_level(self))
     }
-    
+
     var listType: cmark_list_type {
         return cmark_node_get_list_type(self)
     }
-    
+
     var listStart: Int {
         return Int(cmark_node_get_list_start(self))
     }
-    
+
+    var listDelimiter: cmark_delim_type {
+        return cmark_node_get_list_delim(self)
+    }
+
     var url: String? {
         return String(cString: cmark_node_get_url(self))
     }
-    
+
     var title: String? {
         return String(cString: cmark_node_get_title(self))
     }
 }
 
 private extension String {
+
     init?(cString: UnsafePointer<Int8>?) {
         guard let unwrapped = cString else { return nil }
         let result = String(cString: unwrapped)
         guard !result.isEmpty else { return nil }
         self = result
     }
+
 }

Sources/Down/AST/Nodes/Paragraph.swift

@@ -13,7 +13,9 @@ public class Paragraph: BaseNode {}
 // MARK: - Debug
 
 extension Paragraph: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Paragraph"
     }
+
 }

Sources/Down/AST/Nodes/SoftBreak.swift

@@ -13,7 +13,9 @@ public class SoftBreak: BaseNode {}
 // MARK: - Debug
 
 extension SoftBreak: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Soft Break"
     }
+
 }

Sources/Down/AST/Nodes/Strong.swift

@@ -13,7 +13,9 @@ public class Strong: BaseNode {}
 // MARK: - Debug
 
 extension Strong: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Strong"
     }
+
 }

Sources/Down/AST/Nodes/Text.swift

@@ -9,16 +9,21 @@ import Foundation
 import libcmark
 
 public class Text: BaseNode {
-    
+
+    // MARK: - Properties
+
     /// The text content, if present.
+
     public private(set) lazy var literal: String? = cmarkNode.literal
-    
+
 }
 
 // MARK: - Debug
 
 extension Text: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Text - \(literal ?? "nil")"
     }
+
 }

Sources/Down/AST/Nodes/ThematicBreak.swift

@@ -13,7 +13,9 @@ public class ThematicBreak: BaseNode {}
 // MARK: - Debug
 
 extension ThematicBreak: CustomDebugStringConvertible {
+
     public var debugDescription: String {
         return "Thematic Break"
     }
+
 }

Sources/Down/AST/Styling/Attribute Collections/ColorCollection.swift

@@ -0,0 +1,97 @@
+//
+//  ColorCollection.swift
+//  Down
+//
+//  Created by John Nguyen on 27.07.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+public typealias DownColor = UIColor
+
+#elseif canImport(AppKit)
+
+import AppKit
+public typealias DownColor = NSColor
+
+#endif
+
+public protocol ColorCollection {
+
+    var heading1: DownColor { get }
+    var heading2: DownColor { get }
+    var heading3: DownColor { get }
+    var heading4: DownColor { get }
+    var heading5: DownColor { get }
+    var heading6: DownColor { get }
+    var body: DownColor { get }
+    var code: DownColor { get }
+    var link: DownColor { get }
+    var quote: DownColor { get }
+    var quoteStripe: DownColor { get }
+    var thematicBreak: DownColor { get }
+    var listItemPrefix: DownColor { get }
+    var codeBlockBackground: DownColor { get }
+
+}
+
+public struct StaticColorCollection: ColorCollection {
+
+    // MARK: - Properties
+
+    public var heading1: DownColor
+    public var heading2: DownColor
+    public var heading3: DownColor
+    public var heading4: DownColor
+    public var heading5: DownColor
+    public var heading6: DownColor
+    public var body: DownColor
+    public var code: DownColor
+    public var link: DownColor
+    public var quote: DownColor
+    public var quoteStripe: DownColor
+    public var thematicBreak: DownColor
+    public var listItemPrefix: DownColor
+    public var codeBlockBackground: DownColor
+
+    // MARK: - Life cycle
+
+    public init(
+        heading1: DownColor = .black,
+        heading2: DownColor = .black,
+        heading3: DownColor = .black,
+        heading4: DownColor = .black,
+        heading5: DownColor = .black,
+        heading6: DownColor = .black,
+        body: DownColor = .black,
+        code: DownColor = .black,
+        link: DownColor = .blue,
+        quote: DownColor = .darkGray,
+        quoteStripe: DownColor = .darkGray,
+        thematicBreak: DownColor = .init(white: 0.9, alpha: 1),
+        listItemPrefix: DownColor = .lightGray,
+        codeBlockBackground: DownColor = .init(red: 0.96, green: 0.97, blue: 0.98, alpha: 1)
+    ) {
+        self.heading1 = heading1
+        self.heading2 = heading2
+        self.heading3 = heading3
+        self.heading4 = heading4
+        self.heading5 = heading5
+        self.heading6 = heading6
+        self.body = body
+        self.code = code
+        self.link = link
+        self.quote = quote
+        self.quoteStripe = quoteStripe
+        self.thematicBreak = thematicBreak
+        self.listItemPrefix = listItemPrefix
+        self.codeBlockBackground = codeBlockBackground
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Attribute Collections/FontCollection.swift

@@ -0,0 +1,77 @@
+//
+//  FontCollection.swift
+//  Down
+//
+//  Created by John Nguyen on 22.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+public typealias DownFont = UIFont
+
+#elseif canImport(AppKit)
+
+import AppKit
+public typealias DownFont = NSFont
+
+#endif
+
+public protocol FontCollection {
+
+    var heading1: DownFont { get }
+    var heading2: DownFont { get }
+    var heading3: DownFont { get }
+    var heading4: DownFont { get }
+    var heading5: DownFont { get }
+    var heading6: DownFont { get }
+    var body: DownFont { get }
+    var code: DownFont { get }
+    var listItemPrefix: DownFont { get }
+
+}
+
+public struct StaticFontCollection: FontCollection {
+
+    // MARK: - Properties
+
+    public var heading1: DownFont
+    public var heading2: DownFont
+    public var heading3: DownFont
+    public var heading4: DownFont
+    public var heading5: DownFont
+    public var heading6: DownFont
+    public var body: DownFont
+    public var code: DownFont
+    public var listItemPrefix: DownFont
+
+    // MARK: - Life cycle
+
+    public init(
+        heading1: DownFont = .boldSystemFont(ofSize: 28),
+        heading2: DownFont = .boldSystemFont(ofSize: 24),
+        heading3: DownFont = .boldSystemFont(ofSize: 20),
+        heading4: DownFont = .boldSystemFont(ofSize: 20),
+        heading5: DownFont = .boldSystemFont(ofSize: 20),
+        heading6: DownFont = .boldSystemFont(ofSize: 20),
+        body: DownFont = .systemFont(ofSize: 17),
+        code: DownFont = DownFont(name: "menlo", size: 17) ?? .systemFont(ofSize: 17),
+        listItemPrefix: DownFont = DownFont.monospacedDigitSystemFont(ofSize: 17, weight: .regular)
+    ) {
+        self.heading1 = heading1
+        self.heading2 = heading2
+        self.heading3 = heading3
+        self.heading4 = heading4
+        self.heading5 = heading5
+        self.heading6 = heading6
+        self.body = body
+        self.code = code
+        self.listItemPrefix = listItemPrefix
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Attribute Collections/ParagraphStyleCollection.swift

@@ -0,0 +1,74 @@
+//
+//  ParagraphStyleCollection.swift
+//  Down
+//
+//  Created by John Nguyen on 27.07.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+public protocol ParagraphStyleCollection {
+
+    var heading1: NSParagraphStyle { get }
+    var heading2: NSParagraphStyle { get }
+    var heading3: NSParagraphStyle { get }
+    var heading4: NSParagraphStyle { get }
+    var heading5: NSParagraphStyle { get }
+    var heading6: NSParagraphStyle { get }
+    var body: NSParagraphStyle { get }
+    var code: NSParagraphStyle { get }
+
+}
+
+public struct StaticParagraphStyleCollection: ParagraphStyleCollection {
+
+    // MARK: - Properties
+
+    public var heading1: NSParagraphStyle
+    public var heading2: NSParagraphStyle
+    public var heading3: NSParagraphStyle
+    public var heading4: NSParagraphStyle
+    public var heading5: NSParagraphStyle
+    public var heading6: NSParagraphStyle
+    public var body: NSParagraphStyle
+    public var code: NSParagraphStyle
+
+    // MARK: - Life cycle
+
+    public init() {
+        let headingStyle = NSMutableParagraphStyle()
+        headingStyle.paragraphSpacing = 8
+
+        let bodyStyle = NSMutableParagraphStyle()
+        bodyStyle.paragraphSpacingBefore = 8
+        bodyStyle.paragraphSpacing = 8
+        bodyStyle.lineSpacing = 8
+
+        let codeStyle = NSMutableParagraphStyle()
+        codeStyle.paragraphSpacingBefore = 8
+        codeStyle.paragraphSpacing = 8
+
+        heading1 = headingStyle
+        heading2 = headingStyle
+        heading3 = headingStyle
+        heading4 = headingStyle
+        heading5 = headingStyle
+        heading6 = headingStyle
+        body = bodyStyle
+        code = codeStyle
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Custom Attributes/BlockBackgroundColorAttribute.swift

@@ -0,0 +1,36 @@
+//
+//  BlockBackgroundColorAttribute.swift
+//  Down
+//
+//  Created by John Nguyen on 11.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+struct BlockBackgroundColorAttribute {
+
+    // MARK: - Properties
+
+    var color: DownColor
+    var inset: CGFloat
+
+}
+
+extension NSAttributedString.Key {
+
+    static let blockBackgroundColor = NSAttributedString.Key("blockBackgroundColor")
+
+}
+
+#endif

Sources/Down/AST/Styling/Custom Attributes/QuoteStripeAttribute.swift

@@ -0,0 +1,64 @@
+//
+//  QuoteStripeAttrbute.swift
+//  Down
+//
+//  Created by John Nguyen on 03.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+struct QuoteStripeAttribute {
+
+    // MARK: - Properties
+
+    var color: DownColor
+    var thickness: CGFloat
+    var spacingAfter: CGFloat
+    var locations: [CGFloat]
+
+    var layoutWidth: CGFloat {
+        return thickness + spacingAfter
+    }
+
+    // MARK: - Life cycle
+
+    init(color: DownColor, thickness: CGFloat, spacingAfter: CGFloat, locations: [CGFloat]) {
+        self.color = color
+        self.thickness = thickness
+        self.spacingAfter = spacingAfter
+        self.locations = locations
+    }
+
+    init(level: Int, color: DownColor, options: QuoteStripeOptions) {
+        self.init(color: color, thickness: options.thickness, spacingAfter: options.spacingAfter, locations: [])
+        locations = (0..<level).map { CGFloat($0) * layoutWidth }
+    }
+
+    // MARK: - Methods
+
+    func indented(by indentation: CGFloat) -> QuoteStripeAttribute {
+        var copy = self
+        copy.locations = locations.map { $0 + indentation }
+        return copy
+    }
+
+}
+
+extension NSAttributedString.Key {
+
+    static let quoteStripe = NSAttributedString.Key(rawValue: "quoteStripe")
+
+}
+
+#endif

Sources/Down/AST/Styling/Custom Attributes/ThematicBreakAttribute.swift

@@ -0,0 +1,36 @@
+//
+//  ThematicBreaAttributek.swift
+//  Down
+//
+//  Created by John Nguyen on 02.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+struct ThematicBreakAttribute {
+
+    // MARK: - Properties
+
+    var thickness: CGFloat
+    var color: DownColor
+
+}
+
+extension NSAttributedString.Key {
+
+    static let thematicBreak = NSAttributedString.Key(rawValue: "thematicBreak")
+
+}
+
+#endif

Sources/Down/AST/Styling/Helpers/Extensions/CGPoint+Translate.swift

@@ -0,0 +1,29 @@
+//
+//  CGPoint+Translate.swift
+//  Down
+//
+//  Created by John Nguyen on 12.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+extension CGPoint {
+
+    func translated(by point: CGPoint) -> CGPoint {
+        return CGPoint(x: x + point.x, y: y + point.y)
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Helpers/Extensions/CGRect+Helpers.swift

@@ -0,0 +1,33 @@
+//
+//  CGRect+Helpers.swift
+//  Down
+//
+//  Created by John Nguyen on 12.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+extension CGRect {
+
+    init(minX: CGFloat, minY: CGFloat, maxX: CGFloat, maxY: CGFloat) {
+        self.init(x: minX, y: minY, width: maxX - minX, height: maxY - minY)
+    }
+
+    func translated(by point: CGPoint) -> CGRect {
+        return CGRect(origin: origin.translated(by: point), size: size)
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Helpers/Extensions/NSAttributedString+Helpers.swift

@@ -0,0 +1,79 @@
+//
+//  NSAttributedString+Helpers.swift
+//  Down
+//
+//  Created by John Nguyen on 22.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+import Foundation
+
+extension NSAttributedString {
+
+    typealias Attributes = [NSAttributedString.Key: Any]
+
+    // MARK: - Ranges
+
+    var wholeRange: NSRange {
+        return NSRange(location: 0, length: length)
+    }
+
+    func ranges(of key: Key) -> [NSRange] {
+        return ranges(of: key, in: wholeRange)
+    }
+
+    func ranges(of key: Key, in range: NSRange) -> [NSRange] {
+        return ranges(for: key, in: range, where: { $0 != nil })
+    }
+
+    func rangesMissingAttribute(for key: Key) -> [NSRange] {
+        return rangesMissingAttribute(for: key, in: wholeRange)
+    }
+
+    func rangesMissingAttribute(for key: Key, in range: NSRange) -> [NSRange] {
+        return ranges(for: key, in: range, where: { $0 == nil })
+    }
+
+    private func ranges(for key: Key, in range: NSRange, where predicate: (Any?) -> Bool) -> [NSRange] {
+        var ranges = [NSRange]()
+
+        enumerateAttribute(key, in: range, options: []) { value, attrRange, _ in
+            if predicate(value) {
+                ranges.append(attrRange)
+            }
+        }
+
+        return ranges
+    }
+
+    func paragraphRanges() -> [NSRange] {
+        guard length > 0 else { return [] }
+
+        func nextParagraphRange(at location: Int) -> NSRange {
+            return NSString(string: string).paragraphRange(for: NSRange(location: location, length: 1))
+        }
+
+        var result = [nextParagraphRange(at: 0)]
+
+        while let currentLocation = result.last?.upperBound, currentLocation < length {
+            result.append(nextParagraphRange(at: currentLocation))
+        }
+
+        return result.filter { $0.length > 1 }
+    }
+
+    // MARK: - Enumerate attributes
+
+    func enumerateAttributes<A>(for key: Key, block: (_ attr: A, _ range: NSRange) -> Void) {
+        enumerateAttributes(for: key, in: wholeRange, block: block)
+    }
+
+    func enumerateAttributes<A>(for key: Key, in range: NSRange, block: (_ attr: A, _ range: NSRange) -> Void) {
+        enumerateAttribute(key, in: range, options: []) { value, range, _ in
+            if let value = value as? A {
+                block(value, range)
+            }
+        }
+    }
+
+}

Sources/Down/AST/Styling/Helpers/Extensions/NSMutableAttributedString+Attributes.swift

@@ -0,0 +1,58 @@
+//
+//  NSMutableAttributedString+Attributes.swift
+//  Down
+//
+//  Created by John Nguyen on 22.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+import Foundation
+
+extension NSMutableAttributedString {
+
+    func setAttributes(_ attrs: Attributes) {
+        setAttributes(attrs, range: wholeRange)
+    }
+
+    func addAttributes(_ attrs: Attributes) {
+        addAttributes(attrs, range: wholeRange)
+    }
+
+    func addAttribute(for key: Key, value: Any) {
+        addAttribute(key, value: value, range: wholeRange)
+    }
+
+    func removeAttribute(for key: Key) {
+        removeAttribute(key, range: wholeRange)
+    }
+
+    func replaceAttribute(for key: Key, value: Any) {
+        replaceAttribute(for: key, value: value, inRange: wholeRange)
+    }
+
+    func replaceAttribute(for key: Key, value: Any, inRange range: NSRange) {
+        removeAttribute(key, range: range)
+        addAttribute(key, value: value, range: range)
+    }
+
+    func updateExistingAttributes<A>(for key: Key, using transform: (A) -> A) {
+        updateExistingAttributes(for: key, in: wholeRange, using: transform)
+    }
+
+    func updateExistingAttributes<A>(for key: Key, in range: NSRange, using transform: (A) -> A) {
+        var existingValues = [(value: A, range: NSRange)]()
+        enumerateAttributes(for: key, in: range) { existingValues.append(($0, $1)) }
+        existingValues.forEach { addAttribute(key, value: transform($0.0), range: $0.1) }
+    }
+
+    func addAttributeInMissingRanges<A>(for key: Key, value: A) {
+        addAttributeInMissingRanges(for: key, value: value, within: wholeRange)
+    }
+
+    func addAttributeInMissingRanges<A>(for key: Key, value: A, within range: NSRange) {
+        rangesMissingAttribute(for: key, in: range).forEach {
+            addAttribute(key, value: value, range: $0)
+        }
+    }
+
+}

Sources/Down/AST/Styling/Helpers/Extensions/UIFont+Traits.swift

@@ -0,0 +1,94 @@
+//
+//  UIFont+Traits.swift
+//  Down
+//
+//  Created by John Nguyen on 22.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+public typealias DownFontDescriptor = UIFontDescriptor
+
+#elseif canImport(AppKit)
+
+import AppKit
+public typealias DownFontDescriptor = NSFontDescriptor
+
+#endif
+
+extension DownFont {
+
+    var isStrong: Bool {
+        return contains(.strong)
+    }
+
+    var isEmphasized: Bool {
+        return contains(.emphasis)
+    }
+
+    var isMonospace: Bool {
+        return contains(.monoSpace)
+    }
+
+    var strong: DownFont {
+        return with(.strong) ?? self
+    }
+
+    var emphasis: DownFont {
+        return with(.emphasis) ?? self
+    }
+
+    var monospace: DownFont {
+        return with(.monoSpace) ?? self
+    }
+
+    private func with(_ trait: DownFontDescriptor.SymbolicTraits) -> DownFont? {
+        guard !contains(trait) else { return self }
+
+        var traits = fontDescriptor.symbolicTraits
+        traits.insert(trait)
+
+        #if canImport(UIKit)
+        guard let newDescriptor = fontDescriptor.withSymbolicTraits(traits) else { return self }
+        return DownFont(descriptor: newDescriptor, size: pointSize)
+
+        #elseif canImport(AppKit)
+        let newDescriptor = fontDescriptor.withSymbolicTraits(traits)
+        return DownFont(descriptor: newDescriptor, size: pointSize)
+
+        #endif
+    }
+
+    private func contains(_ trait: DownFontDescriptor.SymbolicTraits) -> Bool {
+        return fontDescriptor.symbolicTraits.contains(trait)
+    }
+
+}
+
+#if canImport(UIKit)
+
+private extension DownFontDescriptor.SymbolicTraits {
+
+    static let strong = DownFontDescriptor.SymbolicTraits.traitBold
+    static let emphasis = DownFontDescriptor.SymbolicTraits.traitItalic
+    static let monoSpace = DownFontDescriptor.SymbolicTraits.traitMonoSpace
+
+}
+
+#elseif canImport(AppKit)
+
+private extension DownFontDescriptor.SymbolicTraits {
+
+    static let strong = DownFontDescriptor.SymbolicTraits.bold
+    static let emphasis = DownFontDescriptor.SymbolicTraits.italic
+    static let monoSpace = DownFontDescriptor.SymbolicTraits.monoSpace
+
+}
+
+#endif
+
+#endif

Sources/Down/AST/Styling/Helpers/ListItemParagraphStyler.swift

@@ -0,0 +1,115 @@
+//
+//  ParagraphStyler.swift
+//  Down
+//
+//  Created by John Nguyen on 25.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+/// A convenient class used to format lists, such that list item prefixes
+/// are right aligned and list item content left aligns.
+
+public class ListItemParagraphStyler {
+
+    // MARK: - Properties
+
+    public var indentation: CGFloat {
+        return largestPrefixWidth + options.spacingAfterPrefix
+    }
+
+    /// The paragraph style intended for all paragraphs excluding the first.
+
+    public var trailingParagraphStyle: NSParagraphStyle {
+        let contentIndentation = indentation
+        let style = baseStyle
+        style.firstLineHeadIndent = contentIndentation
+        style.headIndent = contentIndentation
+        return style
+    }
+
+    private let options: ListItemOptions
+    private let largestPrefixWidth: CGFloat
+
+    private var baseStyle: NSMutableParagraphStyle {
+        let style = NSMutableParagraphStyle()
+        style.paragraphSpacingBefore = options.spacingAbove
+        style.paragraphSpacing = options.spacingBelow
+        style.alignment = options.alignment
+        return style
+    }
+
+    // MARK: - Life cycle
+
+    public init(options: ListItemOptions, prefixFont: DownFont) {
+        self.options = options
+        self.largestPrefixWidth = prefixFont.widthOfNumberedPrefix(digits: options.maxPrefixDigits)
+    }
+
+    // MARK: - Methods
+
+    /// The paragraph style intended for the first paragraph of the list item.
+    /// 
+    /// - Parameter prefixWidth: the width (in points) of the list item prefix.
+
+    public func leadingParagraphStyle(prefixWidth: CGFloat) -> NSParagraphStyle {
+        let contentIndentation = indentation
+        let prefixIndentation: CGFloat = contentIndentation - options.spacingAfterPrefix - prefixWidth
+        let prefixSpill = max(0, prefixWidth - largestPrefixWidth)
+        let firstLineContentIndentation = contentIndentation + prefixSpill
+
+        let style = baseStyle
+        style.firstLineHeadIndent = prefixIndentation
+        style.tabStops = [tabStop(at: firstLineContentIndentation)]
+        style.headIndent = contentIndentation
+        return style
+    }
+
+    private func tabStop(at location: CGFloat) -> NSTextTab {
+        return NSTextTab(textAlignment: options.alignment, location: location, options: [:])
+    }
+
+}
+
+// MARK: - Helpers
+
+private extension DownFont {
+
+    func widthOfNumberedPrefix(digits: UInt) -> CGFloat {
+        return widthOfLargestDigit * CGFloat(digits) + widthOfPeriod
+    }
+
+    private var widthOfLargestDigit: CGFloat {
+        return Int.decimalDigits
+            .map { NSAttributedString(string: "\($0)", attributes: [.font: self]).size().width }
+            .max()!
+    }
+
+    private var widthOfPeriod: CGFloat {
+        return NSAttributedString(string: ".", attributes: [.font: self])
+            .size()
+            .width
+    }
+
+}
+
+private extension Int {
+
+    static var decimalDigits: [Int] {
+        return Array(0...9)
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Layout Managers/DownDebugLayoutManager.swift

@@ -0,0 +1,64 @@
+//
+//  DownDebugLayoutManager.swift
+//  Down
+//
+//  Created by John Nguyen on 06.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+/// A layout manager that draws the line fragments.
+///
+/// Line fragments are the areas with a document that contain lines of text. There
+/// are two types.
+///
+/// 1. A *line rect* (drawn in red) indicates the maximum rect enclosing the line.
+/// This inlcudes not only the textual content, but also the padding (if any) around that text.
+/// 2. A *line used rect* (drawn in blue) is the smallest rect enclosing the textual content.
+///
+/// The visualization of these rects is useful when determining the paragraph styles
+/// of a `DownStyler`.
+///
+/// Insert this into a TextKit stack manually, or use the provided `DownDebugTextView`.
+
+public class DownDebugLayoutManager: DownLayoutManager {
+
+    // MARK: - Drawing
+
+    override public func drawGlyphs(forGlyphRange glyphsToShow: NSRange, at origin: CGPoint) {
+        super.drawGlyphs(forGlyphRange: glyphsToShow, at: origin)
+        drawLineFragments(forGlyphRange: glyphsToShow, at: origin)
+    }
+
+    private func drawLineFragments(forGlyphRange glyphsToShow: NSRange, at origin: CGPoint) {
+        enumerateLineFragments(forGlyphRange: glyphsToShow) { rect, usedRect, _, _, _ in
+            [(usedRect, DownColor.blue), (rect, DownColor.red)].forEach { rectToDraw, color in
+                let adjustedRect = rectToDraw.translated(by: origin)
+                self.drawRect(adjustedRect, color: color.cgColor)
+            }
+        }
+    }
+
+    private func drawRect(_ rect: CGRect, color: CGColor) {
+        guard let context = context else { return }
+        push(context: context)
+        defer { popContext() }
+
+        context.setStrokeColor(color)
+        context.stroke(rect)
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Layout Managers/DownLayoutManager.swift

@@ -0,0 +1,231 @@
+//
+//  DownLayoutManager.swift
+//  Down
+//
+//  Created by John Nguyen on 02.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+/// A layout manager capable of drawing the custom attributes set by the `DownStyler`.
+///
+/// Insert this into a TextKit stack manually, or use the provided `DownTextView`.
+
+public class DownLayoutManager: NSLayoutManager {
+
+    // MARK: - Graphic context
+
+    #if canImport(UIKit)
+    var context: CGContext? {
+        return UIGraphicsGetCurrentContext()
+    }
+
+    func push(context: CGContext) {
+        UIGraphicsPushContext(context)
+    }
+
+    func popContext() {
+        UIGraphicsPopContext()
+    }
+
+    #elseif canImport(AppKit)
+    var context: CGContext? {
+        return NSGraphicsContext.current?.cgContext
+    }
+
+    func push(context: CGContext) {
+        NSGraphicsContext.saveGraphicsState()
+    }
+
+    func popContext() {
+        NSGraphicsContext.restoreGraphicsState()
+    }
+
+    #endif
+
+    // MARK: - Drawing
+
+    override public func drawGlyphs(forGlyphRange glyphsToShow: NSRange, at origin: CGPoint) {
+        drawCustomBackgrounds(forGlyphRange: glyphsToShow, at: origin)
+        super.drawGlyphs(forGlyphRange: glyphsToShow, at: origin)
+        drawCustomAttributes(forGlyphRange: glyphsToShow, at: origin)
+    }
+
+    private func drawCustomBackgrounds(forGlyphRange glyphsToShow: NSRange, at origin: CGPoint) {
+        guard let context = context else { return }
+        push(context: context)
+        defer { popContext() }
+
+        guard let textStorage = textStorage else { return }
+
+        let characterRange = self.characterRange(forGlyphRange: glyphsToShow, actualGlyphRange: nil)
+
+        textStorage.enumerateAttributes(for: .blockBackgroundColor,
+                                        in: characterRange) { (attr: BlockBackgroundColorAttribute, blockRange) in
+            let inset = attr.inset
+
+            context.setFillColor(attr.color.cgColor)
+
+            let allBlockColorRanges = glyphRanges(for: .blockBackgroundColor,
+                                                  in: textStorage,
+                                                  inCharacterRange: blockRange)
+
+            let glyphRange = self.glyphRange(forCharacterRange: blockRange, actualCharacterRange: nil)
+
+            enumerateLineFragments(forGlyphRange: glyphRange) { lineRect, lineUsedRect, container, lineGlyphRange, _ in
+                let isLineStartOfBlock = allBlockColorRanges.contains {
+                    lineGlyphRange.overlapsStart(of: $0)
+                }
+
+                let isLineEndOfBlock = allBlockColorRanges.contains {
+                    lineGlyphRange.overlapsEnd(of: $0)
+                }
+
+                let minX = lineUsedRect.minX + container.lineFragmentPadding - inset
+                let maxX = lineRect.maxX
+                let minY = isLineStartOfBlock ? lineUsedRect.minY - inset : lineRect.minY
+                let maxY = isLineEndOfBlock ? lineUsedRect.maxY + inset : lineUsedRect.maxY
+                let blockRect = CGRect(minX: minX, minY: minY, maxX: maxX, maxY: maxY).translated(by: origin)
+
+                context.fill(blockRect)
+            }
+        }
+    }
+
+    private func drawCustomAttributes(forGlyphRange glyphsToShow: NSRange, at origin: CGPoint) {
+        let characterRange = self.characterRange(forGlyphRange: glyphsToShow, actualGlyphRange: nil)
+        drawThematicBreakIfNeeded(in: characterRange, at: origin)
+        drawQuoteStripeIfNeeded(in: characterRange, at: origin)
+    }
+
+    private func drawThematicBreakIfNeeded(in characterRange: NSRange, at origin: CGPoint) {
+        guard let context = context else { return }
+        push(context: context)
+        defer { popContext() }
+
+        textStorage?.enumerateAttributes(for: .thematicBreak,
+                                         in: characterRange) { (attr: ThematicBreakAttribute, range) in
+
+            let firstGlyphIndex = glyphIndexForCharacter(at: range.lowerBound)
+
+            let lineRect = lineFragmentRect(forGlyphAt: firstGlyphIndex, effectiveRange: nil)
+            let usedRect = lineFragmentUsedRect(forGlyphAt: firstGlyphIndex, effectiveRange: nil)
+
+            let lineStart = usedRect.minX + fragmentPadding(forGlyphAt: firstGlyphIndex)
+
+            let width = lineRect.width - lineStart
+            let height = lineRect.height
+
+            let boundingRect = CGRect(x: lineStart, y: lineRect.minY, width: width, height: height)
+            let adjustedLineRect = boundingRect.translated(by: origin)
+
+            drawThematicBreak(with: context, in: adjustedLineRect, attr: attr)
+        }
+    }
+
+    private func fragmentPadding(forGlyphAt glyphIndex: Int) -> CGFloat {
+        let textContainer = self.textContainer(forGlyphAt: glyphIndex, effectiveRange: nil)
+        return textContainer?.lineFragmentPadding ?? 0
+    }
+
+    private func drawThematicBreak(with context: CGContext, in rect: CGRect, attr: ThematicBreakAttribute) {
+        context.setStrokeColor(attr.color.cgColor)
+        context.setLineWidth(attr.thickness)
+        context.move(to: CGPoint(x: rect.minX, y: rect.midY))
+        context.addLine(to: CGPoint(x: rect.maxX, y: rect.midY))
+        context.strokePath()
+    }
+
+    private func drawQuoteStripeIfNeeded(in characterRange: NSRange, at origin: CGPoint) {
+        guard let context = context else { return }
+        push(context: context)
+        defer { popContext() }
+
+        textStorage?.enumerateAttributes(for: .quoteStripe,
+                                         in: characterRange) { (attr: QuoteStripeAttribute, quoteRange) in
+
+            context.setFillColor(attr.color.cgColor)
+
+            let glyphRangeOfQuote = self.glyphRange(forCharacterRange: quoteRange, actualCharacterRange: nil)
+
+            enumerateLineFragments(forGlyphRange: glyphRangeOfQuote) { lineRect, _, container, _, _ in
+                let locations = attr.locations.map {
+                    CGPoint(x: $0 + container.lineFragmentPadding, y: 0)
+                        .translated(by: lineRect.origin)
+                        .translated(by: origin)
+                }
+
+                let stripeSize = CGSize(width: attr.thickness, height: lineRect.height)
+                self.drawQuoteStripes(with: context, locations: locations, size: stripeSize)
+            }
+        }
+    }
+
+    private func drawQuoteStripes(with context: CGContext, locations: [CGPoint], size: CGSize) {
+        locations.forEach {
+            let stripeRect = CGRect(origin: $0, size: size)
+            context.fill(stripeRect)
+        }
+    }
+
+    private func glyphRanges(for key: NSAttributedString.Key,
+                             in storage: NSTextStorage,
+                             inCharacterRange range: NSRange) -> [NSRange] {
+
+        return storage
+            .ranges(of: key, in: range)
+            .map { self.glyphRange(forCharacterRange: $0, actualCharacterRange: nil) }
+            .mergeNeighbors()
+    }
+}
+
+// MARK: - Helpers
+
+private extension NSRange {
+
+    func overlapsStart(of range: NSRange) -> Bool {
+        return lowerBound <= range.lowerBound && upperBound > range.lowerBound
+    }
+
+    func overlapsEnd(of range: NSRange) -> Bool {
+        return lowerBound < range.upperBound && upperBound >= range.upperBound
+    }
+
+}
+
+private extension Array where Element == NSRange {
+
+    func mergeNeighbors() -> [Element] {
+        let sorted = self.sorted { $0.lowerBound <= $1.lowerBound }
+
+        let result = sorted.reduce(into: [NSRange]()) { acc, next in
+            guard let last = acc.popLast() else {
+                acc.append(next)
+                return
+            }
+
+            guard last.upperBound == next.lowerBound else {
+                acc.append(contentsOf: [last, next])
+                return
+            }
+
+            acc.append(NSRange(location: last.lowerBound, length: next.upperBound - last.lowerBound))
+        }
+
+        return result
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Options/CodeBlockOptions.swift

@@ -0,0 +1,35 @@
+//
+//  CodeBlockOptions.swift
+//  Down
+//
+//  Created by John Nguyen on 12.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+public struct CodeBlockOptions {
+
+    // MARK: - Properties
+
+    public var containerInset: CGFloat
+
+    // MARK: - Life cycle
+
+    public init(containerInset: CGFloat = 8) {
+        self.containerInset = containerInset
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Options/ListItemOptions.swift

@@ -0,0 +1,48 @@
+//
+//  ListItemOptions.swift
+//  Down
+//
+//  Created by John Nguyen on 04.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+public struct ListItemOptions {
+
+    // MARK: - Properties
+
+    public var maxPrefixDigits: UInt
+    public var spacingAfterPrefix: CGFloat
+    public var spacingAbove: CGFloat
+    public var spacingBelow: CGFloat
+    public var alignment: NSTextAlignment
+
+    // MARK: - Life cycle
+
+    public init(maxPrefixDigits: UInt = 2,
+                spacingAfterPrefix: CGFloat = 8,
+                spacingAbove: CGFloat = 4,
+                spacingBelow: CGFloat = 8,
+                alignment: NSTextAlignment = .natural) {
+
+        self.maxPrefixDigits = maxPrefixDigits
+        self.spacingAfterPrefix = spacingAfterPrefix
+        self.spacingAbove = spacingAbove
+        self.spacingBelow = spacingBelow
+        self.alignment = alignment
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Options/QuoteStripeOptions.swift

@@ -0,0 +1,37 @@
+//
+//  QuoteStripeOptions.swift
+//  Down
+//
+//  Created by John Nguyen on 04.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+public struct QuoteStripeOptions {
+
+    // MARK: - Properties
+
+    public var thickness: CGFloat
+    public var spacingAfter: CGFloat
+
+    // MARK: - Life cycle
+
+    public init(thickness: CGFloat = 2, spacingAfter: CGFloat = 8) {
+        self.thickness = thickness
+        self.spacingAfter = spacingAfter
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Options/ThematicBreakOptions.swift

@@ -0,0 +1,37 @@
+//
+//  ThematicBreakOptions.swift
+//  Down
+//
+//  Created by John Nguyen on 04.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+public struct ThematicBreakOptions {
+
+    // MARK: - Properties
+
+    public var thickness: CGFloat
+    public var indentation: CGFloat
+
+    // MARK: - Life cycle
+
+    public init(thickness: CGFloat = 1, indentation: CGFloat = 0) {
+        self.thickness = thickness
+        self.indentation = indentation
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Stylers/DownStyler.swift

@@ -0,0 +1,308 @@
+//
+//  DownStyler.swift
+//  Down
+//
+//  Created by John Nguyen on 22.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+/// A default `Styler` implementation that supports a variety of configurable
+/// properties for font, text color and paragraph styling, as well as formatting
+/// of nested lists and quotes.
+
+open class DownStyler: Styler {
+
+    // MARK: - Properties
+
+    public let fonts: FontCollection
+    public let colors: ColorCollection
+    public let paragraphStyles: ParagraphStyleCollection
+
+    public let quoteStripeOptions: QuoteStripeOptions
+    public let thematicBreakOptions: ThematicBreakOptions
+    public let codeBlockOptions: CodeBlockOptions
+
+    private let itemParagraphStyler: ListItemParagraphStyler
+
+    private var listPrefixAttributes: [NSAttributedString.Key: Any] {[
+        .font: fonts.listItemPrefix,
+        .foregroundColor: colors.listItemPrefix]
+    }
+
+    // MARK: - Life cycle
+
+    public init(configuration: DownStylerConfiguration = DownStylerConfiguration()) {
+        fonts = configuration.fonts
+        colors = configuration.colors
+        paragraphStyles = configuration.paragraphStyles
+        quoteStripeOptions = configuration.quoteStripeOptions
+        thematicBreakOptions = configuration.thematicBreakOptions
+        codeBlockOptions = configuration.codeBlockOptions
+        itemParagraphStyler = ListItemParagraphStyler(options: configuration.listItemOptions,
+                                                      prefixFont: fonts.listItemPrefix)
+    }
+
+    // MARK: - Styling
+
+    open func style(document str: NSMutableAttributedString) {
+
+    }
+
+    open func style(blockQuote str: NSMutableAttributedString, nestDepth: Int) {
+        let stripeAttribute = QuoteStripeAttribute(level: nestDepth + 1,
+                                                   color: colors.quoteStripe,
+                                                   options: quoteStripeOptions)
+
+        str.updateExistingAttributes(for: .paragraphStyle) { (style: NSParagraphStyle) in
+            style.indented(by: stripeAttribute.layoutWidth)
+        }
+
+        str.addAttributeInMissingRanges(for: .quoteStripe, value: stripeAttribute)
+        str.addAttribute(for: .foregroundColor, value: colors.quote)
+    }
+
+    open func style(list str: NSMutableAttributedString, nestDepth: Int) {
+
+    }
+
+    open func style(listItemPrefix str: NSMutableAttributedString) {
+        str.setAttributes(listPrefixAttributes)
+    }
+
+    open func style(item str: NSMutableAttributedString, prefixLength: Int) {
+        let paragraphRanges = str.paragraphRanges()
+
+        guard let leadingParagraphRange = paragraphRanges.first else { return }
+
+        indentListItemLeadingParagraph(in: str, prefixLength: prefixLength, in: leadingParagraphRange)
+
+        paragraphRanges.dropFirst().forEach {
+            indentListItemTrailingParagraph(in: str, inRange: $0)
+        }
+    }
+
+    open func style(codeBlock str: NSMutableAttributedString, fenceInfo: String?) {
+        styleGenericCodeBlock(in: str)
+    }
+
+    open func style(htmlBlock str: NSMutableAttributedString) {
+        styleGenericCodeBlock(in: str)
+    }
+
+    open func style(customBlock str: NSMutableAttributedString) {
+
+    }
+
+    open func style(paragraph str: NSMutableAttributedString) {
+        str.addAttribute(for: .paragraphStyle, value: paragraphStyles.body)
+    }
+
+    open func style(heading str: NSMutableAttributedString, level: Int) {
+        let (font, color, paragraphStyle) = headingAttributes(for: level)
+
+        str.updateExistingAttributes(for: .font) { (currentFont: DownFont) in
+            var newFont = font
+
+            if currentFont.isMonospace {
+                newFont = newFont.monospace
+            }
+
+            if currentFont.isEmphasized {
+                newFont = newFont.emphasis
+            }
+
+            if currentFont.isStrong {
+                newFont = newFont.strong
+            }
+
+            return newFont
+        }
+
+        str.addAttributes([
+            .foregroundColor: color,
+            .paragraphStyle: paragraphStyle])
+    }
+
+    open func style(thematicBreak str: NSMutableAttributedString) {
+        let paragraphStyle = NSMutableParagraphStyle()
+        paragraphStyle.firstLineHeadIndent = thematicBreakOptions.indentation
+        let attr = ThematicBreakAttribute(thickness: thematicBreakOptions.thickness, color: colors.thematicBreak)
+        str.addAttribute(for: .thematicBreak, value: attr)
+        str.addAttribute(for: .paragraphStyle, value: paragraphStyle)
+    }
+
+    open func style(text str: NSMutableAttributedString) {
+        str.setAttributes([
+            .font: fonts.body,
+            .foregroundColor: colors.body])
+    }
+
+    open func style(softBreak str: NSMutableAttributedString) {
+
+    }
+
+    open func style(lineBreak str: NSMutableAttributedString) {
+
+    }
+
+    open func style(code str: NSMutableAttributedString) {
+        styleGenericInlineCode(in: str)
+    }
+
+    open func style(htmlInline str: NSMutableAttributedString) {
+        styleGenericInlineCode(in: str)
+    }
+
+    open func style(customInline str: NSMutableAttributedString) {
+
+    }
+
+    open func style(emphasis str: NSMutableAttributedString) {
+        str.updateExistingAttributes(for: .font) { (font: DownFont) in
+            font.emphasis
+        }
+    }
+
+    open func style(strong str: NSMutableAttributedString) {
+        str.updateExistingAttributes(for: .font) { (font: DownFont) in
+            font.strong
+        }
+    }
+
+    open func style(link str: NSMutableAttributedString, title: String?, url: String?) {
+        guard let url = url else { return }
+        styleGenericLink(in: str, url: url)
+    }
+
+    open func style(image str: NSMutableAttributedString, title: String?, url: String?) {
+        guard let url = url else { return }
+        styleGenericLink(in: str, url: url)
+    }
+
+    // MARK: - Common Styling
+
+    private func styleGenericCodeBlock(in str: NSMutableAttributedString) {
+        let blockBackgroundAttribute = BlockBackgroundColorAttribute(
+            color: colors.codeBlockBackground,
+            inset: codeBlockOptions.containerInset)
+
+        let adjustedParagraphStyle = paragraphStyles.code.inset(by: blockBackgroundAttribute.inset)
+
+        str.setAttributes([
+            .font: fonts.code,
+            .foregroundColor: colors.code,
+            .paragraphStyle: adjustedParagraphStyle,
+            .blockBackgroundColor: blockBackgroundAttribute])
+    }
+
+    private func styleGenericInlineCode(in str: NSMutableAttributedString) {
+        str.setAttributes([
+            .font: fonts.code,
+            .foregroundColor: colors.code])
+    }
+
+    private func styleGenericLink(in str: NSMutableAttributedString, url: String) {
+        str.addAttributes([
+            .link: url,
+            .foregroundColor: colors.link])
+    }
+
+    // MARK: - Helpers
+
+    private func headingAttributes(for level: Int) -> (DownFont, DownColor, NSParagraphStyle) {
+        switch level {
+        case 1: return (fonts.heading1, colors.heading1, paragraphStyles.heading1)
+        case 2: return (fonts.heading2, colors.heading2, paragraphStyles.heading2)
+        case 3: return (fonts.heading3, colors.heading3, paragraphStyles.heading3)
+        case 4: return (fonts.heading4, colors.heading4, paragraphStyles.heading4)
+        case 5: return (fonts.heading5, colors.heading5, paragraphStyles.heading5)
+        case 6: return (fonts.heading6, colors.heading6, paragraphStyles.heading6)
+        default: return (fonts.heading1, colors.heading1, paragraphStyles.heading1)
+        }
+    }
+
+    private func indentListItemLeadingParagraph(in str: NSMutableAttributedString,
+                                                prefixLength: Int,
+                                                in range: NSRange) {
+
+        str.updateExistingAttributes(for: .paragraphStyle, in: range) { (existingStyle: NSParagraphStyle) in
+            existingStyle.indented(by: itemParagraphStyler.indentation)
+        }
+
+        let attributedPrefix = str.prefix(with: prefixLength)
+        let prefixWidth = attributedPrefix.size().width
+
+        let defaultStyle = itemParagraphStyler.leadingParagraphStyle(prefixWidth: prefixWidth)
+        str.addAttributeInMissingRanges(for: .paragraphStyle, value: defaultStyle, within: range)
+    }
+
+    private func indentListItemTrailingParagraph(in str: NSMutableAttributedString, inRange range: NSRange) {
+        str.updateExistingAttributes(for: .paragraphStyle, in: range) { (existingStyle: NSParagraphStyle) in
+            existingStyle.indented(by: itemParagraphStyler.indentation)
+        }
+
+        let defaultStyle = itemParagraphStyler.trailingParagraphStyle
+        str.addAttributeInMissingRanges(for: .paragraphStyle, value: defaultStyle, within: range)
+
+        indentListItemQuotes(in: str, inRange: range)
+    }
+
+    private func indentListItemQuotes(in str: NSMutableAttributedString, inRange range: NSRange) {
+        str.updateExistingAttributes(for: .quoteStripe, in: range) { (stripe: QuoteStripeAttribute) in
+            stripe.indented(by: itemParagraphStyler.indentation)
+        }
+    }
+
+}
+
+// MARK: - Helper Extensions
+
+private extension NSParagraphStyle {
+
+    func indented(by indentation: CGFloat) -> NSParagraphStyle {
+        guard let result = mutableCopy() as? NSMutableParagraphStyle else { return self }
+        result.firstLineHeadIndent += indentation
+        result.headIndent += indentation
+
+        result.tabStops = tabStops.map {
+            NSTextTab(textAlignment: $0.alignment, location: $0.location + indentation, options: $0.options)
+        }
+
+        return result
+    }
+
+    func inset(by amount: CGFloat) -> NSParagraphStyle {
+        guard let result = mutableCopy() as? NSMutableParagraphStyle else { return self }
+        result.paragraphSpacingBefore += amount
+        result.paragraphSpacing += amount
+        result.firstLineHeadIndent += amount
+        result.headIndent += amount
+        result.tailIndent = -amount
+        return result
+    }
+
+}
+
+private extension NSAttributedString {
+
+    func prefix(with length: Int) -> NSAttributedString {
+        guard length <= self.length else { return self }
+        guard length > 0 else { return NSAttributedString() }
+        return attributedSubstring(from: NSRange(location: 0, length: length))
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Stylers/DownStylerConfiguration.swift

@@ -0,0 +1,47 @@
+//
+//  DownStylerConfiguration.swift
+//  Down
+//
+//  Created by John Nguyen on 10.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+/// A configuration object used to initialze the `DownStyler`.
+
+public struct DownStylerConfiguration {
+
+    // MARK: - Properties
+
+    public var fonts: FontCollection
+    public var colors: ColorCollection
+    public var paragraphStyles: ParagraphStyleCollection
+
+    public var listItemOptions: ListItemOptions
+    public var quoteStripeOptions: QuoteStripeOptions
+    public var thematicBreakOptions: ThematicBreakOptions
+    public var codeBlockOptions: CodeBlockOptions
+
+    // MARK: - Life cycle
+
+    public init(fonts: FontCollection = StaticFontCollection(),
+                colors: ColorCollection = StaticColorCollection(),
+                paragraphStyles: ParagraphStyleCollection = StaticParagraphStyleCollection(),
+                listItemOptions: ListItemOptions = ListItemOptions(),
+                quoteStripeOptions: QuoteStripeOptions = QuoteStripeOptions(),
+                thematicBreakOptions: ThematicBreakOptions = ThematicBreakOptions(),
+                codeBlockOptions: CodeBlockOptions = CodeBlockOptions()
+    ) {
+        self.fonts = fonts
+        self.colors = colors
+        self.paragraphStyles = paragraphStyles
+        self.listItemOptions = listItemOptions
+        self.quoteStripeOptions = quoteStripeOptions
+        self.thematicBreakOptions = thematicBreakOptions
+        self.codeBlockOptions = codeBlockOptions
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Stylers/Styler.swift

@@ -0,0 +1,189 @@
+//
+//  Styler.swift
+//  Down
+//
+//  Created by John Nguyen on 13.04.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+import Foundation
+
+/// A styler is an object that manipulates the appearance of attributed strings generated
+/// for each particular markdown node. The attributed string passed into each method is
+/// mutable, so new attributes can be added and/or existing attributes modified or removed.
+///
+/// When applying paragraph styles to a string, take care not to cause any conflicts with
+/// existing paragraph styles, as this can lead to visual bugs that are difficult to
+/// understand.
+///
+/// A styler is used in conjunction with an instance of `AttributedStringVisitor` in order
+/// to generate an NSAttributedString from an abstract syntax tree.
+
+public protocol Styler {
+
+    /// Styles the content of the document in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the document content.
+
+    func style(document str: NSMutableAttributedString)
+
+    /// Styles the content of the block quote contained in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the quote content.
+    ///     - nestDepth: the zero indexed nesting depth of the block quote node.
+
+    func style(blockQuote str: NSMutableAttributedString, nestDepth: Int)
+
+    /// Styles the content of the list contained in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the list content.
+    ///     - nestDepth: the zero indexed nesting depth of the list node.
+
+    func style(list str: NSMutableAttributedString, nestDepth: Int)
+
+    /// Styles the number or bullet list item prefix.
+    ///
+    /// - Parameters:
+    ///     - str: the list item prefix.
+
+    func style(listItemPrefix str: NSMutableAttributedString)
+
+    /// Styles the content of the list item contained in the given string, including the
+    /// number or bullet prefix.
+    ///
+    /// - Parameters:
+    ///     - str: the item content.
+    ///     - prefixLength: the character length of the number or bullet prefix.
+
+    func style(item str: NSMutableAttributedString, prefixLength: Int)
+
+    /// Styles the content of the code block in the given string.
+    ///
+    /// An example use case for `fenceInfo` is to specify a programming language name,
+    /// which could be used to support syntax highlighting.
+    ///
+    /// - Parameters:
+    ///     - str: the code content.
+    ///     - fenceInfo: the string that trails the initial \`\`\` ticks.
+
+    func style(codeBlock str: NSMutableAttributedString, fenceInfo: String?)
+
+    /// Styles the content of the html block contained in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the html content.
+
+    func style(htmlBlock str: NSMutableAttributedString)
+
+    /// Styles the content of the custom block contained in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the content.
+
+    func style(customBlock str: NSMutableAttributedString)
+
+    /// Styles the content of the paragraph in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the paragraph content.
+
+    func style(paragraph str: NSMutableAttributedString)
+
+    /// Styles the content of the heading in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the heading content.
+    ///     - level: the heading level [1, 6]
+
+    func style(heading str: NSMutableAttributedString, level: Int)
+
+    /// Styles the content of the thematic break in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the thematic break.
+
+    func style(thematicBreak str: NSMutableAttributedString)
+
+    /// Styles the content of the inline text node in the given string.
+    ///
+    /// The text nodes are always the leaves of the AST, thus they
+    /// contain the base style upon which other nodes can work with.
+    ///
+    /// - Parameters:
+    ///     - str: the text content.
+
+    func style(text str: NSMutableAttributedString)
+
+    /// Styles the content of the soft break in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the soft break.
+
+    func style(softBreak str: NSMutableAttributedString)
+
+    /// Styles the content of the line break in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the line break.
+
+    func style(lineBreak str: NSMutableAttributedString)
+
+    /// Styles the content of the inline code in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the code content.
+
+    func style(code str: NSMutableAttributedString)
+
+    /// Styles the content of the inline html tags in the given string.
+    ///
+    /// Note, the content does not include text between matching tags.
+    ///
+    /// - Parameters:
+    ///     - str: the html content.
+
+    func style(htmlInline str: NSMutableAttributedString)
+
+    /// Styles the content of the inline custom node in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the custom content.
+
+    func style(customInline str: NSMutableAttributedString)
+
+    /// Styles the content of the inline emphasis node in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the ephasized content.
+
+    func style(emphasis str: NSMutableAttributedString)
+
+    /// Styles the content of the inline strong node in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the strong content.
+
+    func style(strong str: NSMutableAttributedString)
+
+    /// Styles the content of the inline link node in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the link content.
+    ///     - title: the link title.
+    ///     - url: the linked url.
+
+    func style(link str: NSMutableAttributedString, title: String?, url: String?)
+
+    /// Styles the content of the inline image node in the given string.
+    ///
+    /// - Parameters:
+    ///     - str: the link content.
+    ///     - title: the link title.
+    ///     - url: the linked url.
+
+    func style(image str: NSMutableAttributedString, title: String?, url: String?)
+
+}

Sources/Down/AST/Styling/Text Views/DownDebugTextView.swift

@@ -0,0 +1,39 @@
+//
+//  DownDebugTextView.swift
+//  Down
+//
+//  Created by John Nguyen on 06.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+
+#elseif canImport(AppKit)
+
+import AppKit
+
+#endif
+
+/// A text view capable of parsing and rendering markdown via the AST, as well as line fragments.
+///
+/// See `DownDebugLayoutManager`.
+
+public class DownDebugTextView: DownTextView {
+
+    // MARK: - Life cycle
+
+    public init(frame: CGRect, styler: Styler = DownStyler()) {
+        super.init(frame: frame, styler: styler, layoutManager: DownDebugLayoutManager())
+    }
+
+    required public init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+}
+
+#endif

Sources/Down/AST/Styling/Text Views/DownTextView.swift

@@ -0,0 +1,100 @@
+//
+//  DownTextView.swift
+//  Down
+//
+//  Created by John Nguyen on 03.08.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+#if !os(watchOS) && !os(Linux)
+
+#if canImport(UIKit)
+
+import UIKit
+public typealias TextView = UITextView
+
+#elseif canImport(AppKit)
+
+import AppKit
+public typealias TextView = NSTextView
+
+#endif
+
+/// A text view capable of parsing and rendering markdown via the AST.
+
+open class DownTextView: TextView {
+
+    // MARK: - Properties
+
+    open var styler: Styler {
+        didSet {
+            try? render()
+        }
+    }
+
+    #if canImport(UIKit)
+
+    open override var text: String! {
+        didSet {
+            guard oldValue != text else { return }
+            try? render()
+        }
+    }
+
+    #elseif canImport(AppKit)
+
+    open override var string: String {
+        didSet {
+            guard oldValue != string else { return }
+            try? render()
+        }
+    }
+
+    #endif
+
+    // MARK: - Life cycle
+
+    public convenience init(frame: CGRect, styler: Styler = DownStyler()) {
+        self.init(frame: frame, styler: styler, layoutManager: DownLayoutManager())
+    }
+
+    public init(frame: CGRect, styler: Styler, layoutManager: NSLayoutManager) {
+        self.styler = styler
+
+        let textStorage = NSTextStorage()
+        let textContainer = NSTextContainer()
+
+        textStorage.addLayoutManager(layoutManager)
+        layoutManager.addTextContainer(textContainer)
+
+        super.init(frame: frame, textContainer: textContainer)
+
+        // We don't want the text view to overwrite link attributes set
+        // by the styler.
+        linkTextAttributes = [:]
+    }
+
+    required public init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    // MARK: - Methods
+
+    open func render() throws {
+        #if canImport(UIKit)
+        let down = Down(markdownString: text)
+        let markdown = try down.toAttributedString(styler: styler)
+        attributedText = markdown
+
+        #elseif canImport(AppKit)
+        guard let textStorage = textStorage else { return }
+        let down = Down(markdownString: string)
+        let markdown = try down.toAttributedString(styler: styler)
+        textStorage.replaceCharacters(in: textStorage.wholeRange, with: markdown)
+
+        #endif
+    }
+
+}
+
+#endif

Sources/Down/AST/Visitors/AttributedStringVisitor.swift

@@ -0,0 +1,249 @@
+//
+//  AttributedStringVisitor.swift
+//  Down
+//
+//  Created by John Nguyen on 09.04.19.
+//
+
+#if !os(Linux)
+
+import Foundation
+
+/// This class is used to generated an `NSMutableAttributedString` from the abstract syntax
+/// tree produced by a markdown string. It traverses the tree to construct substrings
+/// represented at each node and uses an instance of `Styler` to apply the visual attributes.
+/// These substrings are joined together to produce the final result.
+
+public typealias ListPrefixGeneratorBuilder = (List) -> ListItemPrefixGenerator
+
+public class AttributedStringVisitor {
+
+    // MARK: - Properties
+
+    private let styler: Styler
+    private let options: DownOptions
+    private let listPrefixGeneratorBuilder: ListPrefixGeneratorBuilder
+    private var listPrefixGenerators = [ListItemPrefixGenerator]()
+
+    /// Creates a new instance with the given styler and options.
+    ///
+    /// - parameters:
+    ///     - styler: used to style the markdown elements.
+    ///     - options: may be used to modify rendering.
+    ///     - listPrefixGeneratorBuilder: may be used to modify list prefixes.
+
+    public init(
+        styler: Styler,
+        options: DownOptions = .default,
+        listPrefixGeneratorBuilder: @escaping ListPrefixGeneratorBuilder = { StaticListItemPrefixGenerator(list: $0) }
+    ) {
+        self.styler = styler
+        self.options = options
+        self.listPrefixGeneratorBuilder = listPrefixGeneratorBuilder
+    }
+
+}
+
+extension AttributedStringVisitor: Visitor {
+
+    public typealias Result = NSMutableAttributedString
+
+    public func visit(document node: Document) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        styler.style(document: result)
+        return result
+    }
+
+    public func visit(blockQuote node: BlockQuote) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(blockQuote: result, nestDepth: node.nestDepth)
+        return result
+    }
+
+    public func visit(list node: List) -> NSMutableAttributedString {
+
+        listPrefixGenerators.append(listPrefixGeneratorBuilder(node))
+        defer { listPrefixGenerators.removeLast() }
+
+        let items = visitChildren(of: node)
+
+        let result = items.joined
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(list: result, nestDepth: node.nestDepth)
+        return result
+    }
+
+    public func visit(item node: Item) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+
+        let prefix = listPrefixGenerators.last?.next() ?? "•"
+        let attributedPrefix = "\(prefix)\t".attributed
+        styler.style(listItemPrefix: attributedPrefix)
+        result.insert(attributedPrefix, at: 0)
+
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(item: result, prefixLength: (prefix as NSString).length)
+        return result
+    }
+
+    public func visit(codeBlock node: CodeBlock) -> NSMutableAttributedString {
+        guard let literal = node.literal else { return .empty }
+        let result = literal.replacingNewlinesWithLineSeparators().attributed
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(codeBlock: result, fenceInfo: node.fenceInfo)
+        return result
+    }
+
+    public func visit(htmlBlock node: HtmlBlock) -> NSMutableAttributedString {
+        guard let literal = node.literal else { return .empty }
+        let result = literal.replacingNewlinesWithLineSeparators().attributed
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(htmlBlock: result)
+        return result
+    }
+
+    public func visit(customBlock node: CustomBlock) -> NSMutableAttributedString {
+        guard let result = node.literal?.attributed else { return .empty }
+        styler.style(customBlock: result)
+        return result
+    }
+
+    public func visit(paragraph node: Paragraph) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(paragraph: result)
+        return result
+    }
+
+    public func visit(heading node: Heading) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        if node.hasSuccessor { result.append(.paragraphSeparator) }
+        styler.style(heading: result, level: node.headingLevel)
+        return result
+    }
+
+    public func visit(thematicBreak node: ThematicBreak) -> NSMutableAttributedString {
+        let result = "\(String.zeroWidthSpace)\n".attributed
+        styler.style(thematicBreak: result)
+        return result
+    }
+
+    public func visit(text node: Text) -> NSMutableAttributedString {
+        guard let result = node.literal?.attributed else { return .empty }
+        styler.style(text: result)
+        return result
+    }
+
+    public func visit(softBreak node: SoftBreak) -> NSMutableAttributedString {
+        let result = (options.contains(.hardBreaks) ? String.lineSeparator : " ").attributed
+        styler.style(softBreak: result)
+        return result
+    }
+
+    public func visit(lineBreak node: LineBreak) -> NSMutableAttributedString {
+        let result = String.lineSeparator.attributed
+        styler.style(lineBreak: result)
+        return result
+    }
+
+    public func visit(code node: Code) -> NSMutableAttributedString {
+        guard let result = node.literal?.attributed else { return .empty }
+        styler.style(code: result)
+        return result
+    }
+
+    public func visit(htmlInline node: HtmlInline) -> NSMutableAttributedString {
+        guard let result = node.literal?.attributed else { return .empty }
+        styler.style(htmlInline: result)
+        return result
+    }
+
+    public func visit(customInline node: CustomInline) -> NSMutableAttributedString {
+        guard let result = node.literal?.attributed else { return .empty }
+        styler.style(customInline: result)
+        return result
+    }
+
+    public func visit(emphasis node: Emphasis) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        styler.style(emphasis: result)
+        return result
+    }
+
+    public func visit(strong node: Strong) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        styler.style(strong: result)
+        return result
+    }
+
+    public func visit(link node: Link) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        styler.style(link: result, title: node.title, url: node.url)
+        return result
+    }
+
+    public func visit(image node: Image) -> NSMutableAttributedString {
+        let result = visitChildren(of: node).joined
+        styler.style(image: result, title: node.title, url: node.url)
+        return result
+    }
+}
+
+// MARK: - Helper extensions
+
+private extension Sequence where Iterator.Element == NSMutableAttributedString {
+
+    var joined: NSMutableAttributedString {
+        return reduce(into: NSMutableAttributedString()) { $0.append($1) }
+    }
+
+}
+
+private extension NSMutableAttributedString {
+
+    static var empty: NSMutableAttributedString {
+        return "".attributed
+    }
+
+}
+
+private extension NSAttributedString {
+
+    static var paragraphSeparator: NSAttributedString {
+        return String.paragraphSeparator.attributed
+    }
+
+}
+
+private extension String {
+
+    var attributed: NSMutableAttributedString {
+        return NSMutableAttributedString(string: self)
+    }
+
+    // This codepoint marks the end of a paragraph and the start of the next.
+
+    static var paragraphSeparator: String {
+        return "\u{2029}"
+    }
+
+    // This code point allows line breaking, without starting a new paragraph.
+
+    static var lineSeparator: String {
+        return "\u{2028}"
+    }
+
+    static var zeroWidthSpace: String {
+        return "\u{200B}"
+    }
+
+    func replacingNewlinesWithLineSeparators() -> String {
+        let trimmed = trimmingCharacters(in: .newlines)
+        let lines = trimmed.components(separatedBy: .newlines)
+        return lines.joined(separator: .lineSeparator)
+    }
+
+}
+
+#endif // !os(Linux)

Sources/Down/AST/Visitors/DebugVisitor.swift

@@ -9,24 +9,27 @@ import Foundation
 
 /// This visitor will generate the debug description of an entire abstract syntax tree,
 /// indicating relationships between nodes with indentation.
-public class DebugVisitor {
-    
-    /// Current depth in the tree.
+
+public class DebugVisitor: Visitor {
+
+    // MARK: - Properties
+
     private var depth = 0
-    
-    /// The amount of indent for the current depth.
+
     private var indent: String {
         return String(repeating: "    ", count: depth)
     }
 
+    // MARK: - Life cycle
+
     public init() {}
-    
-    /// Debug representation of node.
+
+    // MARK: - Helpers
+
     private func report(_ node: Node) -> String {
         return "\(indent)\(node is Document ? "" : "↳ ")\(String(reflecting: node))\n"
     }
-    
-    /// Debug representation of node including all children.
+
     private func reportWithChildren(_ node: Node) -> String {
         let thisNode = report(node)
         depth += 1
@@ -34,88 +37,89 @@ public class DebugVisitor {
         depth -= 1
         return "\(thisNode)\(children)"
     }
-}
 
-extension DebugVisitor: Visitor {
+    // MARK: - Visitor
+
     public typealias Result = String
-    
+
     public func visit(document node: Document) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(blockQuote node: BlockQuote) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(list node: List) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(item node: Item) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(codeBlock node: CodeBlock) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(htmlBlock node: HtmlBlock) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(customBlock node: CustomBlock) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(paragraph node: Paragraph) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(heading node: Heading) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(thematicBreak node: ThematicBreak) -> String {
         return report(node)
     }
-    
+
     public func visit(text node: Text) -> String {
         return report(node)
     }
-    
+
     public func visit(softBreak node: SoftBreak) -> String {
         return report(node)
     }
-    
+
     public func visit(lineBreak node: LineBreak) -> String {
         return report(node)
     }
-    
+
     public func visit(code node: Code) -> String {
         return report(node)
     }
-    
+
     public func visit(htmlInline node: HtmlInline) -> String {
         return report(node)
     }
-    
+
     public func visit(customInline node: CustomInline) -> String {
         return report(node)
     }
-    
+
     public func visit(emphasis node: Emphasis) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(strong node: Strong) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(link node: Link) -> String {
         return reportWithChildren(node)
     }
-    
+
     public func visit(image node: Image) -> String {
         return reportWithChildren(node)
     }
+
 }

Sources/Down/AST/Visitors/ListItemPrefixGenerator.swift

@@ -0,0 +1,54 @@
+//
+//  ListItemPrefixGenerator.swift
+//  Down
+//
+//  Created by John Nguyen on 23.06.19.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+import Foundation
+
+/// A ListItemPrefixGenerator is an object used to generate list item prefix.
+public protocol ListItemPrefixGenerator {
+    init(listType: List.ListType, numberOfItems: Int, nestDepth: Int)
+    func next() -> String?
+}
+
+public extension ListItemPrefixGenerator {
+    init(list: List) {
+        self.init(listType: list.listType, numberOfItems: list.numberOfItems, nestDepth: list.nestDepth)
+    }
+}
+
+/// Default implementation of `ListItemPrefixGenerator`.
+/// Generating the following symbol based on `List.ListType`:
+/// - List.ListType is bullet => "•"
+/// - List.ListType is ordered => "X." (where is the item number)
+public class StaticListItemPrefixGenerator: ListItemPrefixGenerator {
+
+    // MARK: - Properties
+
+    private var prefixes: IndexingIterator<[String]>
+
+    // MARK: - Life cycle
+
+    required public init(listType: List.ListType, numberOfItems: Int, nestDepth: Int) {
+            switch listType {
+            case .bullet:
+                prefixes = [String](repeating: "•", count: numberOfItems)
+                    .makeIterator()
+
+            case .ordered(let start):
+                prefixes = (start..<(start + numberOfItems))
+                    .map { "\($0)." }
+                    .makeIterator()
+            }
+        }
+
+    // MARK: - Methods
+
+    public func next() -> String? {
+        prefixes.next()
+    }
+
+}

Sources/Down/AST/Visitors/Visitor.swift

@@ -11,8 +11,11 @@ import Foundation
 /// each node of the tree and produces some result for that node. A visitor is "accepted" by
 /// the root node (of type `Document`), which will start the traversal by first invoking
 /// `visit(document:)`.
+
 public protocol Visitor {
+
     associatedtype Result
+
     func visit(document node: Document) -> Result
     func visit(blockQuote node: BlockQuote) -> Result
     func visit(list node: List) -> Result
@@ -34,36 +37,39 @@ public protocol Visitor {
     func visit(link node: Link) -> Result
     func visit(image node: Image) -> Result
     func visitChildren(of node: Node) -> [Result]
+
 }
 
 extension Visitor {
+
     public func visitChildren(of node: Node) -> [Result] {
-        return node.children.compactMap { child in
+        return node.childSequence.compactMap { child in
             switch child {
-            case is Document:       return visit(document: child as! Document)
-            case is BlockQuote:     return visit(blockQuote: child as! BlockQuote)
-            case is List:           return visit(list: child as! List)
-            case is Item:           return visit(item: child as! Item)
-            case is CodeBlock:      return visit(codeBlock: child as! CodeBlock)
-            case is HtmlBlock:      return visit(htmlBlock: child as! HtmlBlock)
-            case is CustomBlock:    return visit(customBlock: child as! CustomBlock)
-            case is Paragraph:      return visit(paragraph: child as! Paragraph)
-            case is Heading:        return visit(heading: child as! Heading)
-            case is ThematicBreak:  return visit(thematicBreak: child as! ThematicBreak)
-            case is Text:           return visit(text: child as! Text)
-            case is SoftBreak:      return visit(softBreak: child as! SoftBreak)
-            case is LineBreak:      return visit(lineBreak: child as! LineBreak)
-            case is Code:           return visit(code: child as! Code)
-            case is HtmlInline:     return visit(htmlInline: child as! HtmlInline)
-            case is CustomInline:   return visit(customInline: child as! CustomInline)
-            case is Emphasis:       return visit(emphasis: child as! Emphasis)
-            case is Strong:         return visit(strong: child as! Strong)
-            case is Link:           return visit(link: child as! Link)
-            case is Image:          return visit(image: child as! Image)
+            case let child as Document:       return visit(document: child)
+            case let child as BlockQuote:     return visit(blockQuote: child)
+            case let child as List:           return visit(list: child)
+            case let child as Item:           return visit(item: child)
+            case let child as CodeBlock:      return visit(codeBlock: child)
+            case let child as HtmlBlock:      return visit(htmlBlock: child)
+            case let child as CustomBlock:    return visit(customBlock: child)
+            case let child as Paragraph:      return visit(paragraph: child)
+            case let child as Heading:        return visit(heading: child)
+            case let child as ThematicBreak:  return visit(thematicBreak: child)
+            case let child as Text:           return visit(text: child)
+            case let child as SoftBreak:      return visit(softBreak: child)
+            case let child as LineBreak:      return visit(lineBreak: child)
+            case let child as Code:           return visit(code: child)
+            case let child as HtmlInline:     return visit(htmlInline: child)
+            case let child as CustomInline:   return visit(customInline: child)
+            case let child as Emphasis:       return visit(emphasis: child)
+            case let child as Strong:         return visit(strong: child)
+            case let child as Link:           return visit(link: child)
+            case let child as Image:          return visit(image: child)
             default:
                 assertionFailure("Unexpected child")
                 return nil
             }
         }
     }
+
 }

Sources/Down/Down.h

@@ -3,7 +3,7 @@
 //  Down
 //
 //  Created by Rob Phillips on 6/1/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 @import Foundation;

Sources/Down/Down.swift

@@ -3,21 +3,25 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/28/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 
 public struct Down: DownASTRenderable, DownHTMLRenderable, DownXMLRenderable,
-                    DownLaTeXRenderable, DownGroffRenderable, DownCommonMarkRenderable,
-                    DownAttributedStringRenderable {
+                    DownLaTeXRenderable, DownGroffRenderable, DownCommonMarkRenderable {
     /// A string containing CommonMark Markdown
     public var markdownString: String
 
-    /// Initializes the container with a CommonMark Markdown string which can then be rendered depending on protocol conformance
+    /// Initializes the container with a CommonMark Markdown string which can then be
+    /// rendered depending on protocol conformance.
     ///
     /// - Parameter markdownString: A string containing CommonMark Markdown
     public init(markdownString: String) {
         self.markdownString = markdownString
     }
 }
+
+#if !os(Linux)
+extension Down: DownAttributedStringRenderable { }
+#endif // !os(Linux)

Sources/Down/Enums & Options/DownErrors.swift

@@ -3,25 +3,34 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/28/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 
 public enum DownErrors: Error {
-    /// Thrown when there was an issue converting the Markdown into an abstract syntax tree
+
+    /// Thrown when there was an issue converting the Markdown into an abstract syntax tree.
+
     case markdownToASTError
 
-    /// Thrown when the abstract syntax tree could not be rendered into another format
+    /// Thrown when the abstract syntax tree could not be rendered into another format.
+
     case astRenderingError
 
-    /// Thrown when an HTML string cannot be converted into an `NSData` representation
+    /// Thrown when an HTML string cannot be converted into an `NSData` representation.
+
     case htmlDataConversionError
 
     #if os(macOS)
+
     /// Thrown when a custom template bundle has a non-standard bundle format.
     ///
-    /// Specifically, the file URL of the bundle’s subdirectory containing resource files could not be found (i.e. the bundle's `resourceURL` property is nil).
+    /// Specifically, the file URL of the bundle’s subdirectory containing resource files could
+    /// not be found (i.e. the bundle's `resourceURL` property is nil).
+
     case nonStandardBundleFormatError
+
     #endif
+
 }

Sources/Down/Enums & Options/DownOptions.swift

@@ -3,25 +3,34 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/28/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 import libcmark
 
 public struct DownOptions: OptionSet {
+
+    // MARK: - Properties
+
     public let rawValue: Int32
+
+    // MARK: - Life cycle
+
     public init(rawValue: Int32) { self.rawValue = rawValue }
 
-    /// Default options
+    /// Default options.
+
     public static let `default` = DownOptions(rawValue: CMARK_OPT_DEFAULT)
 
     // MARK: - Rendering Options
 
-    /// Include a `data-sourcepos` attribute on all block elements
+    /// Include a `data-sourcepos` attribute on all block elements.
+
     public static let sourcePos = DownOptions(rawValue: CMARK_OPT_SOURCEPOS)
 
     /// Render `softbreak` elements as hard line breaks.
+
     public static let hardBreaks = DownOptions(rawValue: CMARK_OPT_HARDBREAKS)
 
     /// Suppress raw HTML and unsafe links (`javascript:`, `vbscript:`,
@@ -32,8 +41,9 @@ public struct DownOptions: OptionSet {
     ///
     /// Note: this is the default option as of cmark v0.29.0. Use `unsafe`
     ///       to disable this behavior.
+
     public static let safe = DownOptions(rawValue: CMARK_OPT_SAFE)
-    
+
     /// Render raw HTML and unsafe links (`javascript:`, `vbscript:`,
     /// `file:`, and `data:`, except for `image/png`, `image/gif`,
     /// `image/jpeg`, or `image/webp` mime types).  By default,
@@ -41,18 +51,28 @@ public struct DownOptions: OptionSet {
     /// links are replaced by empty strings.
     ///
     /// Note: `safe` is the default as of cmark v0.29.0
+
     public static let unsafe = DownOptions(rawValue: CMARK_OPT_UNSAFE)
 
     // MARK: - Parsing Options
 
     /// Normalize tree by consolidating adjacent text nodes.
+
     public static let normalize = DownOptions(rawValue: CMARK_OPT_NORMALIZE)
 
     /// Validate UTF-8 in the input before parsing, replacing illegal
     /// sequences with the replacement character U+FFFD.
+
     public static let validateUTF8 = DownOptions(rawValue: CMARK_OPT_VALIDATE_UTF8)
 
     /// Convert straight quotes to curly, --- to em dashes, -- to en dashes.
+
     public static let smart = DownOptions(rawValue: CMARK_OPT_SMART)
 
+    // MARK: - Combo Options
+
+    /// Combines 'unsafe' and 'smart' to render raw HTML and produce smart typography.
+
+    public static let smartUnsafe = DownOptions(rawValue: CMARK_OPT_SMART + CMARK_OPT_UNSAFE)
+
 }

Sources/Down/Extensions/NSAttributedString+HTML.swift

@@ -3,22 +3,31 @@
 //  Down
 //
 //  Created by Rob Phillips on 6/1/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
-#if os(macOS)
-    import AppKit
-#else
-    import UIKit
-#endif
+#if !os(Linux)
 
+#if os(macOS)
+
+import AppKit
+
+#else
+
+import UIKit
+
+#endif
 
 extension NSAttributedString {
 
     /// Instantiates an attributed string with the given HTML string
     ///
-    /// - Parameter htmlString: An HTML string
-    /// - Throws: `HTMLDataConversionError` or an instantiation error
+    /// - Parameters:
+    ///     - htmlString: An HTML string.
+    ///
+    /// - Throws:
+    ///     `HTMLDataConversionError` or an instantiation error.
+
     convenience init(htmlString: String) throws {
         guard let data = htmlString.data(using: String.Encoding.utf8) else {
             throw DownErrors.htmlDataConversionError
@@ -28,7 +37,10 @@ extension NSAttributedString {
             .documentType: NSAttributedString.DocumentType.html,
             .characterEncoding: NSNumber(value: String.Encoding.utf8.rawValue)
         ]
+
         try self.init(data: data, options: options, documentAttributes: nil)
     }
 
 }
+
+#endif // !os(Linux)

Sources/Down/Extensions/String+ToHTML.swift

@@ -3,7 +3,7 @@
 //  Down
 //
 //  Created by Rob Phillips on 6/1/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
@@ -11,11 +11,16 @@ import libcmark
 
 extension String {
 
-    /// Generates an HTML string from the contents of the string (self), which should contain CommonMark Markdown
+    /// Generates an HTML string from the contents of the string (self), which should contain CommonMark Markdown.
     ///
-    /// - Parameter options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: HTML string
-    /// - Throws: `DownErrors` depending on the scenario
+    /// - Parameters:
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    /// - Returns:
+    ///     An HTML string.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toHTML(_ options: DownOptions = .default) throws -> String {
         let ast = try DownASTRenderer.stringToAST(self, options: options)
         let html = try DownHTMLRenderer.astToHTML(ast, options: options)

Sources/Down/Renderers/DownASTRenderable.swift

@@ -0,0 +1,88 @@
+//
+//  DownASTRenderable.swift
+//  Down
+//
+//  Created by Rob Phillips on 5/31/16.
+//  Copyright © 2016-2019 Down. All rights reserved.
+//
+
+import Foundation
+import libcmark
+
+public protocol DownASTRenderable: DownRenderable {
+
+    func toAST(_ options: DownOptions) throws -> CMarkNode
+
+}
+
+extension DownASTRenderable {
+
+    /// Generates an abstract syntax tree from the `markdownString` property.
+    ///
+    /// - Parametera:
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     An abstract syntax tree representation of the Markdown input.
+    ///
+    /// - Throws:
+    /// `MarkdownToASTError` if conversion fails.
+
+    public func toAST(_ options: DownOptions = .default) throws -> CMarkNode {
+        return try DownASTRenderer.stringToAST(markdownString, options: options)
+    }
+
+    /// Parses the `markdownString` property into an abstract syntax tree and returns the root `Document` node.
+    ///
+    /// - Parameters:
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     The root Document node for the abstract syntax tree representation of the Markdown input.
+    ///
+    /// - Throws:
+    ///     `MarkdownToASTError` if conversion fails.
+
+    public func toDocument(_ options: DownOptions = .default) throws -> Document {
+        let tree = try toAST(options)
+
+        guard tree.type == CMARK_NODE_DOCUMENT else {
+            throw DownErrors.astRenderingError
+        }
+
+        return Document(cmarkNode: tree)
+    }
+
+}
+
+public struct DownASTRenderer {
+
+    /// Generates an abstract syntax tree from the given CommonMark Markdown string.
+    ///
+    /// **Important:** It is the caller's responsibility to call `cmark_node_free(ast)` on the returned value.
+    ///
+    /// - Parameters:
+    ///     - string: A string containing CommonMark Markdown.
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     An abstract syntax tree representation of the Markdown input.
+    ///
+    /// - Throws:
+    ///     `MarkdownToASTError` if conversion fails.
+    public static func stringToAST(_ string: String, options: DownOptions = .default) throws -> CMarkNode {
+        var tree: CMarkNode?
+
+        string.withCString {
+            let stringLength = Int(strlen($0))
+            tree = cmark_parse_document($0, stringLength, options.rawValue)
+        }
+
+        guard let ast = tree else {
+            throw DownErrors.markdownToASTError
+        }
+
+        return ast
+    }
+
+}

Sources/Down/Renderers/DownAttributedStringRenderable.swift

@@ -3,19 +3,24 @@
 //  Down
 //
 //  Created by Rob Phillips on 6/1/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
+#if !os(Linux)
+
 import Foundation
 import libcmark
 
 public protocol DownAttributedStringRenderable: DownHTMLRenderable, DownASTRenderable {
+
     func toAttributedString(_ options: DownOptions, stylesheet: String?) throws -> NSAttributedString
     func toAttributedString(_ options: DownOptions, styler: Styler) throws -> NSAttributedString
+
 }
 
 extension DownAttributedStringRenderable {
-    /// Generates an `NSAttributedString` from the `markdownString` property
+
+    /// Generates an `NSAttributedString` from the `markdownString` property.
     ///
     /// **Note:** The attributed string is constructed and rendered via WebKit from html generated from the
     /// abstract syntax tree. This process is not background safe and must be executed on the main
@@ -23,36 +28,46 @@ extension DownAttributedStringRenderable {
     /// use the `toAttributedString(options: styler:)` method below.
     ///
     /// - Parameters:
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - stylesheet: a `String` to use as the CSS stylesheet when rendering, defaulting to a style that uses the `NSAttributedString` default font
-    /// - Returns: An `NSAttributedString`
-    /// - Throws: `DownErrors` depending on the scenario
-    public func toAttributedString(_ options: DownOptions = .default, stylesheet: String? = nil) throws -> NSAttributedString {
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - stylesheet: a `String` to use as the CSS stylesheet when rendering, defaulting
+    ///       to a style that uses the `NSAttributedString` default font.
+    ///
+    /// - Returns:
+    ///     An `NSAttributedString`.
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
+    public func toAttributedString(_ options: DownOptions = .default,
+                                   stylesheet: String? = nil) throws -> NSAttributedString {
+
         let html = try self.toHTML(options)
         let defaultStylesheet = "* {font-family: Helvetica } code, pre { font-family: Menlo }"
         return try NSAttributedString(htmlString: "<style>" + (stylesheet ?? defaultStylesheet) + "</style>" + html)
     }
-    
-    /// Generates an `NSAttributedString` from the `markdownString` property
+
+    /// Generates an `NSAttributedString` from the `markdownString` property.
     ///
     /// **Note:** The attributed string is constructed directly by traversing the abstract syntax tree. It is
     /// much faster than the `toAttributedString(options: stylesheet)` method and it can be also be
     /// rendered in a background thread.
     ///
     /// - Parameters:
-    ///   - options: `DownOptions` to modify parsing or rendering
-    ///   - styler: a class/struct conforming to `Styler` to use when rendering the various elements of the attributed string
-    /// - Returns: `DownErrors` depending on the scenario
-    /// - Throws: `DownErrors` depending on the scenario
+    ///     - options: `DownOptions` to modify parsing or rendering.
+    ///     - styler: a class/struct conforming to `Styler` to use when rendering the various
+    ///       elements of the attributed string
+    ///
+    /// - Returns:
+    ///     An `NSAttributedString`.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toAttributedString(_ options: DownOptions = .default, styler: Styler) throws -> NSAttributedString {
-        let tree = try self.toAST(options)
-        
-        guard tree.type == CMARK_NODE_DOCUMENT else {
-            throw DownErrors.astRenderingError
-        }
-        
-        let document = Document(cmarkNode: tree)
+        let document = try self.toDocument(options)
         let visitor = AttributedStringVisitor(styler: styler, options: options)
         return document.accept(visitor)
     }
+
 }
+
+#endif // !os(Linux)

Sources/Down/Renderers/DownCommonMarkRenderable.swift

@@ -3,55 +3,75 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/31/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 import libcmark
 
 public protocol DownCommonMarkRenderable: DownRenderable {
+
     func toCommonMark(_ options: DownOptions, width: Int32) throws -> String
+
 }
 
 extension DownCommonMarkRenderable {
-    /// Generates a CommonMark Markdown string from the `markdownString` property
+
+    /// Generates a CommonMark Markdown string from the `markdownString` property.
     ///
     /// - Parameters:
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - width: The width to break on, defaulting to 0
-    /// - Returns: CommonMark Markdown string
-    /// - Throws: `DownErrors` depending on the scenario
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - width: The width to break on, defaulting to 0.
+    ///
+    /// - Returns:
+    ///     A CommonMark Markdown string.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toCommonMark(_ options: DownOptions = .default, width: Int32 = 0) throws -> String {
         let ast = try DownASTRenderer.stringToAST(markdownString, options: options)
         let commonMark = try DownCommonMarkRenderer.astToCommonMark(ast, options: options, width: width)
         cmark_node_free(ast)
         return commonMark
     }
+
 }
 
 public struct DownCommonMarkRenderer {
-    /// Generates a CommonMark Markdown string from the given abstract syntax tree
+
+    /// Generates a CommonMark Markdown string from the given abstract syntax tree.
     ///
-    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns
+    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns.
     ///
     /// - Parameters:
-    ///   - ast: The `cmark_node` representing the abstract syntax tree
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - width: The width to break on, defaulting to 0
-    /// - Returns: CommonMark Markdown string
-    /// - Throws: `ASTRenderingError` if the AST could not be converted
-    public static func astToCommonMark(_ ast: UnsafeMutablePointer<cmark_node>,
+    ///     - ast: The `cmark_node` representing the abstract syntax tree.
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - width: The width to break on, defaulting to 0.
+    ///
+    /// - Returns:
+    ///     A CommonMark Markdown string.
+    ///
+    /// - Throws:
+    ///     `ASTRenderingError` if the AST could not be converted.
+
+    public static func astToCommonMark(_ ast: CMarkNode,
                                        options: DownOptions = .default,
                                        width: Int32 = 0) throws -> String {
+
         guard let cCommonMarkString = cmark_render_commonmark(ast, options.rawValue, width) else {
             throw DownErrors.astRenderingError
         }
-        defer { free(cCommonMarkString) }
-        
+
+        defer {
+            free(cCommonMarkString)
+        }
+
         guard let commonMarkString = String(cString: cCommonMarkString, encoding: String.Encoding.utf8) else {
             throw DownErrors.astRenderingError
         }
-        
+
         return commonMarkString
     }
+
 }

Sources/Down/Renderers/DownGroffRenderable.swift

@@ -3,55 +3,75 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/31/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 import libcmark
 
 public protocol DownGroffRenderable: DownRenderable {
+
     func toGroff(_ options: DownOptions, width: Int32) throws -> String
+
 }
 
 extension DownGroffRenderable {
-    /// Generates a groff man string from the `markdownString` property
+
+    /// Generates a groff man string from the `markdownString` property.
     ///
     /// - Parameters:
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - width: The width to break on, defaulting to 0
-    /// - Returns: groff man string
-    /// - Throws: `DownErrors` depending on the scenario
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - width: The width to break on, defaulting to 0.
+    ///
+    /// - Returns:
+    ///     A groff man string.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toGroff(_ options: DownOptions = .default, width: Int32 = 0) throws -> String {
         let ast = try DownASTRenderer.stringToAST(markdownString, options: options)
         let groff = try DownGroffRenderer.astToGroff(ast, options: options, width: width)
         cmark_node_free(ast)
         return groff
     }
+
 }
 
 public struct DownGroffRenderer {
-    /// Generates a groff man string from the given abstract syntax tree
+
+    /// Generates a groff man string from the given abstract syntax tree.
     ///
-    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns
+    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns.
     ///
     /// - Parameters:
-    ///   - ast: The `cmark_node` representing the abstract syntax tree
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - width: The width to break on, defaulting to 0
-    /// - Returns: groff man string
-    /// - Throws: `ASTRenderingError` if the AST could not be converted
-    public static func astToGroff(_ ast: UnsafeMutablePointer<cmark_node>,
+    ///     - ast: The `cmark_node` representing the abstract syntax tree.
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - width: The width to break on, defaulting to 0.
+    ///
+    /// - Returns:
+    ///     A groff man string.
+    ///
+    /// - Throws:
+    ///     `ASTRenderingError` if the AST could not be converted.
+
+    public static func astToGroff(_ ast: CMarkNode,
                                   options: DownOptions = .default,
                                   width: Int32 = 0) throws -> String {
+
         guard let cGroffString = cmark_render_man(ast, options.rawValue, width) else {
             throw DownErrors.astRenderingError
         }
-        defer { free(cGroffString) }
-        
+
+        defer {
+            free(cGroffString)
+        }
+
         guard let groffString = String(cString: cGroffString, encoding: String.Encoding.utf8) else {
             throw DownErrors.astRenderingError
         }
 
         return groffString
     }
+
 }

Sources/Down/Renderers/DownHTMLRenderable.swift

@@ -3,47 +3,67 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/28/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 import libcmark
 
 public protocol DownHTMLRenderable: DownRenderable {
+
     func toHTML(_ options: DownOptions) throws -> String
+
 }
 
 extension DownHTMLRenderable {
-    /// Generates an HTML string from the `markdownString` property
+
+    /// Generates an HTML string from the `markdownString` property.
     ///
-    /// - Parameter options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: HTML string
-    /// - Throws: `DownErrors` depending on the scenario
+    /// - Parameters:
+    ///     -  options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     An HTML string.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toHTML(_ options: DownOptions = .default) throws -> String {
         return try markdownString.toHTML(options)
     }
+
 }
 
 public struct DownHTMLRenderer {
-    /// Generates an HTML string from the given abstract syntax tree
+
+    /// Generates an HTML string from the given abstract syntax tree.
     ///
-    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns
+    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns.
     ///
     /// - Parameters:
-    ///   - ast: The `cmark_node` representing the abstract syntax tree
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: HTML string
-    /// - Throws: `ASTRenderingError` if the AST could not be converted
-    public static func astToHTML(_ ast: UnsafeMutablePointer<cmark_node>, options: DownOptions = .default) throws -> String {
+    ///     - ast: The `cmark_node` representing the abstract syntax tree.
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     An HTML string.
+    ///
+    /// - Throws:
+    ///     `ASTRenderingError` if the AST could not be converted.
+
+    public static func astToHTML(_ ast: CMarkNode, options: DownOptions = .default) throws -> String {
         guard let cHTMLString = cmark_render_html(ast, options.rawValue) else {
             throw DownErrors.astRenderingError
         }
-        defer { free(cHTMLString) }
-        
+
+        defer {
+            free(cHTMLString)
+        }
+
         guard let htmlString = String(cString: cHTMLString, encoding: String.Encoding.utf8) else {
             throw DownErrors.astRenderingError
         }
 
         return htmlString
     }
+
 }

Sources/Down/Renderers/DownLaTeXRenderable.swift

@@ -3,55 +3,75 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/31/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 import libcmark
 
 public protocol DownLaTeXRenderable: DownRenderable {
+
     func toLaTeX(_ options: DownOptions, width: Int32) throws -> String
+
 }
 
 extension DownLaTeXRenderable {
-    /// Generates a LaTeX string from the `markdownString` property
+
+    /// Generates a LaTeX string from the `markdownString` property.
     ///
     /// - Parameters:
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - width: The width to break on, defaulting to 0
-    /// - Returns: LaTeX string
-    /// - Throws: `DownErrors` depending on the scenario
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - width: The width to break on, defaulting to 0.
+    ///
+    /// - Returns:
+    ///     A LaTeX string.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toLaTeX(_ options: DownOptions = .default, width: Int32 = 0) throws -> String {
         let ast = try DownASTRenderer.stringToAST(markdownString, options: options)
         let latex = try DownLaTeXRenderer.astToLaTeX(ast, options: options, width: width)
         cmark_node_free(ast)
         return latex
     }
+
 }
 
 public struct DownLaTeXRenderer {
-    /// Generates a LaTeX string from the given abstract syntax tree
+
+    /// Generates a LaTeX string from the given abstract syntax tree.
     ///
-    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns
+    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns.
     ///
     /// - Parameters:
-    ///   - ast: The `cmark_node` representing the abstract syntax tree
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    ///   - width: The width to break on, defaulting to 0
-    /// - Returns: LaTeX string
-    /// - Throws: `ASTRenderingError` if the AST could not be converted
-    public static func astToLaTeX(_ ast: UnsafeMutablePointer<cmark_node>,
+    ///     - ast: The `cmark_node` representing the abstract syntax tree.
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///     - width: The width to break on, defaulting to 0.
+    ///
+    /// - Returns:
+    ///     A LaTeX string.
+    ///
+    /// - Throws:
+    ///     `ASTRenderingError` if the AST could not be converted.
+
+    public static func astToLaTeX(_ ast: CMarkNode,
                                   options: DownOptions = .default,
                                   width: Int32 = 0) throws -> String {
+
         guard let cLatexString = cmark_render_latex(ast, options.rawValue, width) else {
             throw DownErrors.astRenderingError
         }
-        defer { free(cLatexString) }
-        
+
+        defer {
+            free(cLatexString)
+        }
+
         guard let latexString = String(cString: cLatexString, encoding: String.Encoding.utf8) else {
             throw DownErrors.astRenderingError
         }
-        
+
         return latexString
     }
+
 }

Sources/Down/Renderers/DownRenderable.swift

@@ -3,12 +3,15 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/28/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 
 public protocol DownRenderable {
-    /// A string containing CommonMark Markdown
+
+    /// A string containing CommonMark Markdown.
+
     var markdownString: String { get set }
+
 }

Sources/Down/Renderers/DownXMLRenderable.swift

@@ -3,50 +3,70 @@
 //  Down
 //
 //  Created by Rob Phillips on 5/31/16.
-//  Copyright © 2016-2019 Glazed Donut, LLC. All rights reserved.
+//  Copyright © 2016-2019 Down. All rights reserved.
 //
 
 import Foundation
 import libcmark
 
 public protocol DownXMLRenderable: DownRenderable {
+
     func toXML(_ options: DownOptions) throws -> String
+
 }
 
 extension DownXMLRenderable {
-    /// Generates an XML string from the `markdownString` property
+
+    /// Generates an XML string from the `markdownString` property.
     ///
-    /// - Parameter options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: XML string
-    /// - Throws: `DownErrors` depending on the scenario
+    /// - Parameters:
+    ///     -  options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     An XML string.
+    ///
+    /// - Throws:
+    ///     `DownErrors` depending on the scenario.
+
     public func toXML(_ options: DownOptions = .default) throws -> String {
         let ast = try DownASTRenderer.stringToAST(markdownString, options: options)
         let xml = try DownXMLRenderer.astToXML(ast, options: options)
         cmark_node_free(ast)
         return xml
     }
+
 }
 
 public struct DownXMLRenderer {
+
     /// Generates an XML string from the given abstract syntax tree
     ///
-    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns
+    /// **Note:** caller is responsible for calling `cmark_node_free(ast)` after this returns.
     ///
     /// - Parameters:
-    ///   - ast: The `cmark_node` representing the abstract syntax tree
-    ///   - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`
-    /// - Returns: XML string
-    /// - Throws: `ASTRenderingError` if the AST could not be converted
-    public static func astToXML(_ ast: UnsafeMutablePointer<cmark_node>, options: DownOptions = .default) throws -> String {
+    ///     - ast: The `cmark_node` representing the abstract syntax tree.
+    ///     - options: `DownOptions` to modify parsing or rendering, defaulting to `.default`.
+    ///
+    /// - Returns:
+    ///     An XML string.
+    ///
+    /// - Throws:
+    ///     `ASTRenderingError` if the AST could not be converted.
+
+    public static func astToXML(_ ast: CMarkNode, options: DownOptions = .default) throws -> String {
         guard let cXMLString = cmark_render_xml(ast, options.rawValue) else {
             throw DownErrors.astRenderingError
         }
-        defer { free(cXMLString) }
-        
+
+        defer {
+            free(cXMLString)
+        }
+
         guard let xmlString = String(cString: cXMLString, encoding: String.Encoding.utf8) else {
             throw DownErrors.astRenderingError
         }
 
         return xmlString
     }
+
 }