Adds Gemfile and GH pages gem

Simplified Introdction page

Spiced up home page more, style changes to code examples

.github/workflows/cla.yml

@@ -1,22 +0,0 @@
-name: Contributor License Agreement (CLA)
-
-on:
-  pull_request_target:
-    types: [opened, synchronize]
-  issue_comment:
-    types: [created]
-
-jobs:
-  cla:
-    runs-on: ubuntu-latest
-    if: |
-      (github.event.issue.pull_request 
-        && !github.event.issue.pull_request.merged_at
-        && contains(github.event.comment.body, 'signed')
-      ) 
-      || (github.event.pull_request && !github.event.pull_request.merged)
-    steps:
-      - uses: Shopify/shopify-cla-action@v1
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          cla-token: ${{ secrets.CLA_TOKEN }}

.github/workflows/liquid.yml

@@ -1,37 +0,0 @@
-name: Liquid
-on: [push, pull_request]
-
-env:
-  BUNDLE_JOBS: 4
-  BUNDLE_RETRY: 3
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        entry:
-          - { ruby: 3.0, allowed-failure: false } # minimum supported
-          - { ruby: 3.2, allowed-failure: false }
-          - { ruby: 3.3, allowed-failure: false }
-          - { ruby: 3.4, allowed-failure: false } # latest
-          - { ruby: ruby-head, allowed-failure: false }
-    name: Test Ruby ${{ matrix.entry.ruby }}
-    steps:
-      - uses: actions/checkout@v3
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.entry.ruby }}
-          bundler-cache: true
-          bundler: latest
-      - run: bundle exec rake
-        continue-on-error: ${{ matrix.entry.allowed-failure }}
-
-  memory_profile:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: ruby/setup-ruby@v1
-        with:
-          bundler-cache: true
-      - run: bundle exec rake memory_profile:run

.gitignore

@@ -1,9 +1,41 @@
-*~
-*.gem
-*.swp
-pkg
-*.rbc
-.rvmrc
-.bundle
-.byebug_history
-Gemfile.lock
+_site/
+.sass-cache/
+node_modules/
+
+# Compiled source #
+###################
+*.com
+*.class
+*.dll
+*.exe
+*.o
+*.so
+
+# Packages #
+############
+# it's better to unpack these files and commit the raw source
+# git has its own built in compression methods
+*.7z
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+
+# Logs and databases #
+######################
+*.log
+*.sql
+*.sqlite
+
+# OS generated files #
+######################
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db

.rubocop.yml

@@ -1,28 +0,0 @@
-inherit_gem:
-  rubocop-shopify: rubocop.yml
-
-inherit_from:
-  - .rubocop_todo.yml
-
-require: rubocop-performance
-
-Performance:
-  Enabled: true
-
-AllCops:
-  NewCops: disable
-  SuggestExtensions: false
-  Exclude:
-    - 'vendor/bundle/**/*'
-
-Naming/MethodName:
-  Exclude:
-    - 'example/server/liquid_servlet.rb'
-
-Style/ClassMethodsDefinitions:
-  Enabled: false
-
-# liquid filter calls were being mistaken to be calls on arrays
-Style/ConcatArrayLiterals:
-  Exclude:
-    - 'test/integration/standard_filter_test.rb'

.rubocop_todo.yml

@@ -1,180 +0,0 @@
-# This configuration was generated by
-# `rubocop --auto-gen-config`
-# on 2022-05-18 19:25:47 UTC using RuboCop version 1.29.1.
-# The point is for the user to remove these configuration records
-# one by one as the offenses are removed from the code base.
-# Note that changes in the inspected code, or installation of new
-# versions of RuboCop, may require this file to be generated again.
-
-# Offense count: 1
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: TreatCommentsAsGroupSeparators, ConsiderPunctuation, Include.
-# Include: **/*.gemspec
-Gemspec/OrderedDependencies:
-  Exclude:
-    - 'liquid.gemspec'
-
-# Offense count: 6
-# This cop supports safe auto-correction (--auto-correct).
-Layout/ClosingHeredocIndentation:
-  Exclude:
-    - 'test/integration/tags/for_tag_test.rb'
-
-# Offense count: 34
-# This cop supports safe auto-correction (--auto-correct).
-Layout/EmptyLineAfterGuardClause:
-  Exclude:
-    - 'lib/liquid/block.rb'
-    - 'lib/liquid/block_body.rb'
-    - 'lib/liquid/context.rb'
-    - 'lib/liquid/drop.rb'
-    - 'lib/liquid/lexer.rb'
-    - 'lib/liquid/parser.rb'
-    - 'lib/liquid/profiler/hooks.rb'
-    - 'lib/liquid/standardfilters.rb'
-    - 'lib/liquid/tags/for.rb'
-    - 'lib/liquid/tags/if.rb'
-    - 'lib/liquid/utils.rb'
-    - 'lib/liquid/variable.rb'
-    - 'lib/liquid/variable_lookup.rb'
-    - 'performance/shopify/money_filter.rb'
-    - 'performance/shopify/paginate.rb'
-
-# Offense count: 8
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: AllowAliasSyntax, AllowedMethods.
-# AllowedMethods: alias_method, public, protected, private
-Layout/EmptyLinesAroundAttributeAccessor:
-  Exclude:
-    - 'lib/liquid/template.rb'
-    - 'test/integration/filter_test.rb'
-    - 'test/integration/tags/include_tag_test.rb'
-    - 'test/unit/strainer_template_unit_test.rb'
-
-# Offense count: 17
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyle, IndentationWidth.
-# SupportedStyles: aligned, indented
-Layout/LineEndStringConcatenationIndentation:
-  Exclude:
-    - 'test/integration/tags/for_tag_test.rb'
-    - 'test/integration/tags/increment_tag_test.rb'
-
-# Offense count: 1
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyle, IndentationWidth.
-# SupportedStyles: aligned, indented
-Layout/MultilineOperationIndentation:
-  Exclude:
-    - 'lib/liquid/expression.rb'
-
-# Offense count: 9
-Lint/MissingSuper:
-  Exclude:
-    - 'lib/liquid/forloop_drop.rb'
-    - 'lib/liquid/tablerowloop_drop.rb'
-    - 'test/integration/assign_test.rb'
-    - 'test/integration/context_test.rb'
-    - 'test/integration/filter_test.rb'
-    - 'test/integration/standard_filter_test.rb'
-    - 'test/integration/tags/for_tag_test.rb'
-    - 'test/integration/tags/table_row_test.rb'
-
-# Offense count: 44
-Naming/ConstantName:
-  Exclude:
-    - 'lib/liquid.rb'
-    - 'lib/liquid/block_body.rb'
-    - 'lib/liquid/tags/assign.rb'
-    - 'lib/liquid/tags/capture.rb'
-    - 'lib/liquid/tags/case.rb'
-    - 'lib/liquid/tags/cycle.rb'
-    - 'lib/liquid/tags/for.rb'
-    - 'lib/liquid/tags/if.rb'
-    - 'lib/liquid/tags/raw.rb'
-    - 'lib/liquid/tags/table_row.rb'
-    - 'lib/liquid/variable.rb'
-    - 'performance/shopify/comment_form.rb'
-    - 'performance/shopify/paginate.rb'
-    - 'test/integration/tags/include_tag_test.rb'
-
-# Offense count: 9
-# Configuration parameters: CheckIdentifiers, CheckConstants, CheckVariables, CheckStrings, CheckSymbols, CheckComments, CheckFilepaths, FlaggedTerms.
-Naming/InclusiveLanguage:
-  Exclude:
-    - 'lib/liquid/drop.rb'
-    - 'lib/liquid/parse_context.rb'
-    - 'test/integration/drop_test.rb'
-    - 'test/integration/tags/if_else_tag_test.rb'
-
-# Offense count: 2
-Style/ClassVars:
-  Exclude:
-    - 'lib/liquid/condition.rb'
-
-# Offense count: 3
-# This cop supports safe auto-correction (--auto-correct).
-Style/ExplicitBlockArgument:
-  Exclude:
-    - 'test/integration/context_test.rb'
-    - 'test/integration/tag/disableable_test.rb'
-    - 'test/integration/tags/for_tag_test.rb'
-
-# Offense count: 2982
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
-# SupportedStyles: single_quotes, double_quotes
-Style/StringLiterals:
-  Enabled: false
-
-# Offense count: 20
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: single_quotes, double_quotes
-Style/StringLiteralsInInterpolation:
-  Exclude:
-    - 'lib/liquid/condition.rb'
-    - 'lib/liquid/strainer_template.rb'
-    - 'lib/liquid/tag/disableable.rb'
-    - 'performance/shopify/shop_filter.rb'
-    - 'performance/shopify/tag_filter.rb'
-
-# Offense count: 6
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyleForMultiline.
-# SupportedStylesForMultiline: comma, consistent_comma, no_comma
-Style/TrailingCommaInArrayLiteral:
-  Exclude:
-    - 'example/server/example_servlet.rb'
-    - 'lib/liquid/condition.rb'
-    - 'test/integration/context_test.rb'
-    - 'test/integration/standard_filter_test.rb'
-    - 'test/unit/parse_tree_visitor_test.rb'
-
-# Offense count: 1
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyleForMultiline.
-# SupportedStylesForMultiline: comma, consistent_comma, no_comma
-Style/TrailingCommaInHashLiteral:
-  Exclude:
-    - 'lib/liquid/expression.rb'
-
-# Offense count: 19
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: EnforcedStyle, MinSize, WordRegex.
-# SupportedStyles: percent, brackets
-Style/WordArray:
-  Exclude:
-    - 'lib/liquid/tags/if.rb'
-    - 'liquid.gemspec'
-    - 'test/integration/assign_test.rb'
-    - 'test/integration/context_test.rb'
-    - 'test/integration/drop_test.rb'
-    - 'test/integration/standard_filter_test.rb'
-
-# Offense count: 117
-# This cop supports safe auto-correction (--auto-correct).
-# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, AllowedPatterns, IgnoredPatterns.
-# URISchemes: http, https
-Layout/LineLength:
-  Max: 260

.ruby-version

@@ -1 +0,0 @@
-3.4.1

.travis.yml

@@ -0,0 +1,4 @@
+install: gem install github-pages
+script: jekyll build --trace
+sudo: false
+rvm: 2.1

CNAME

@@ -0,0 +1 @@
+liquidmarkup.org

CONTRIBUTING.md

@@ -1,36 +0,0 @@
-# How to contribute
-
-## Things we will merge
-
-* Bugfixes
-* Performance improvements
-* Features that are likely to be useful to the majority of Liquid users
-* Documentation updates that are concise and likely to be useful to the majority of Liquid users
-
-## Things we won't merge
-
-* Code that introduces considerable performance degrations
-* Code that touches performance-critical parts of Liquid and comes without benchmarks
-* Features that are not important for most people (we want to keep the core Liquid code small and tidy)
-* Features that can easily be implemented on top of Liquid (for example as a custom filter or custom filesystem)
-* Code that does not include tests
-* Code that breaks existing tests
-* Documentation changes that are verbose, incorrect or not important to most people (we want to keep it simple and easy to understand)
-
-## Workflow
-
-* [Sign the CLA](https://cla.shopify.com/) if you haven't already
-* Fork the Liquid repository
-* Create a new branch in your fork
-  * For updating [Liquid documentation](https://shopify.github.io/liquid/), create it from `gh-pages` branch. (You can skip tests.)
-* If it makes sense, add tests for your code and/or run a performance benchmark
-* Make sure all tests pass (`bundle exec rake`)
-* Create a pull request
-
-## Releasing
-
-* Bump the version in `lib/liquid/version.rb`
-* Update the `History.md` file
-* Open a PR like [this one](https://github.com/Shopify/liquid/pull/1894) and merge it to `main`
-* Create a new release using the [GitHub UI](https://github.com/Shopify/liquid/releases/new)
-

Gemfile

@@ -1,31 +1,3 @@
-# frozen_string_literal: true
-
 source 'https://rubygems.org'
-git_source(:github) do |repo_name|
-  "https://github.com/#{repo_name}.git"
-end
 
-gemspec
-
-gem "base64"
-
-group :benchmark, :test do
-  gem 'benchmark-ips'
-  gem 'memory_profiler'
-  gem 'terminal-table'
-  gem "lru_redux"
-
-  install_if -> { RUBY_PLATFORM !~ /mingw|mswin|java/ && RUBY_ENGINE != 'truffleruby' } do
-    gem 'stackprof'
-  end
-end
-
-group :development do
-  gem "webrick"
-end
-
-group :test do
-  gem 'rubocop', '~> 1.61.0'
-  gem 'rubocop-shopify', '~> 2.12.0', require: false
-  gem 'rubocop-performance', require: false
-end
+gem 'github-pages', group: :jekyll_plugins

Gemfile.lock

@@ -0,0 +1,133 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    RedCloth (4.2.9)
+    activesupport (4.2.6)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    addressable (2.4.0)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.10.0)
+    colorator (0.1)
+    ethon (0.8.1)
+      ffi (>= 1.3.0)
+    execjs (2.6.0)
+    faraday (0.9.2)
+      multipart-post (>= 1.2, < 3)
+    ffi (1.9.10)
+    gemoji (2.1.0)
+    github-pages (64)
+      RedCloth (= 4.2.9)
+      github-pages-health-check (= 1.1.0)
+      jekyll (= 3.0.3)
+      jekyll-coffeescript (= 1.0.1)
+      jekyll-feed (= 0.4.0)
+      jekyll-gist (= 1.4.0)
+      jekyll-github-metadata (= 1.9.0)
+      jekyll-mentions (= 1.0.1)
+      jekyll-paginate (= 1.1.0)
+      jekyll-redirect-from (= 0.10.0)
+      jekyll-sass-converter (= 1.3.0)
+      jekyll-seo-tag (= 1.3.2)
+      jekyll-sitemap (= 0.10.0)
+      jekyll-textile-converter (= 0.1.0)
+      jemoji (= 0.5.1)
+      kramdown (= 1.10.0)
+      liquid (= 3.0.6)
+      mercenary (~> 0.3)
+      rdiscount (= 2.1.8)
+      redcarpet (= 3.3.3)
+      rouge (= 1.10.1)
+      terminal-table (~> 1.4)
+    github-pages-health-check (1.1.0)
+      addressable (~> 2.3)
+      net-dns (~> 0.8)
+      octokit (~> 4.0)
+      public_suffix (~> 1.4)
+      typhoeus (~> 0.7)
+    html-pipeline (2.3.0)
+      activesupport (>= 2, < 5)
+      nokogiri (>= 1.4)
+    i18n (0.7.0)
+    jekyll (3.0.3)
+      colorator (~> 0.1)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 1.1)
+      kramdown (~> 1.3)
+      liquid (~> 3.0)
+      mercenary (~> 0.3.3)
+      rouge (~> 1.7)
+      safe_yaml (~> 1.0)
+    jekyll-coffeescript (1.0.1)
+      coffee-script (~> 2.2)
+    jekyll-feed (0.4.0)
+    jekyll-gist (1.4.0)
+      octokit (~> 4.2)
+    jekyll-github-metadata (1.9.0)
+      octokit (~> 4.0)
+    jekyll-mentions (1.0.1)
+      html-pipeline (~> 2.3)
+      jekyll (~> 3.0)
+    jekyll-paginate (1.1.0)
+    jekyll-redirect-from (0.10.0)
+      jekyll (>= 2.0)
+    jekyll-sass-converter (1.3.0)
+      sass (~> 3.2)
+    jekyll-seo-tag (1.3.2)
+      jekyll (~> 3.0)
+    jekyll-sitemap (0.10.0)
+    jekyll-textile-converter (0.1.0)
+      RedCloth (~> 4.0)
+    jekyll-watch (1.3.1)
+      listen (~> 3.0)
+    jemoji (0.5.1)
+      gemoji (~> 2.0)
+      html-pipeline (~> 2.2)
+      jekyll (>= 2.0)
+    json (1.8.3)
+    kramdown (1.10.0)
+    liquid (3.0.6)
+    listen (3.0.6)
+      rb-fsevent (>= 0.9.3)
+      rb-inotify (>= 0.9.7)
+    mercenary (0.3.5)
+    mini_portile2 (2.0.0)
+    minitest (5.8.4)
+    multipart-post (2.0.0)
+    net-dns (0.8.0)
+    nokogiri (1.6.7.2)
+      mini_portile2 (~> 2.0.0.rc2)
+    octokit (4.3.0)
+      sawyer (~> 0.7.0, >= 0.5.3)
+    public_suffix (1.5.3)
+    rb-fsevent (0.9.7)
+    rb-inotify (0.9.7)
+      ffi (>= 0.5.0)
+    rdiscount (2.1.8)
+    redcarpet (3.3.3)
+    rouge (1.10.1)
+    safe_yaml (1.0.4)
+    sass (3.4.21)
+    sawyer (0.7.0)
+      addressable (>= 2.3.5, < 2.5)
+      faraday (~> 0.8, < 0.10)
+    terminal-table (1.5.2)
+    thread_safe (0.3.5)
+    typhoeus (0.8.0)
+      ethon (>= 0.8.0)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  github-pages
+
+BUNDLED WITH
+   1.11.2

Gruntfile.js

@@ -0,0 +1,72 @@
+// Gruntfile
+module.exports = function(grunt) {
+require('load-grunt-tasks')(grunt);
+
+  // Project configuration.
+  grunt.initConfig({
+
+    pkg: grunt.file.readJSON('package.json'),
+
+    watch: {
+      css: {
+        files: ['_sass/**/*.scss'],
+        tasks: ['sass', 'postcss', 'shell:jekyllBuild'],
+        options: {
+          atBegin: true
+        }
+      },
+      jekyll: {
+        files: ['index.md', '_includes/*.html', 'filters/*.*',  '_layouts/*.*', 'tags/*.*', 'basics/*.*'],
+        tasks: ['shell:jekyllBuild']
+      }
+    },
+
+    sass: {
+      dist: {
+        options: {
+          style: 'expanded',
+          sourcemap: 'none'
+        },
+        files: {
+          '_site/css/main.css':'_sass/main.scss'
+        }
+      }
+    },
+
+    shell: {
+      jekyllServe: {
+        command: 'jekyll serve --no-watch'
+      },
+
+      jekyllBuild: {
+        command: 'jekyll build'
+      }
+    },
+
+    postcss: {
+      options: {
+        map: true,
+        processors: [
+          require('autoprefixer-core')({browsers: 'last 2 versions'})
+        ]
+      },
+      dist: {
+        src: '_site/css/*.css'
+      }
+    },
+
+    concurrent: {
+      tasks: ['shell:jekyllServe', 'watch'],
+      options: {
+        logConcurrentOutput: true
+      }
+    }
+  });
+
+  grunt.loadNpmTasks('grunt-contrib-watch');
+  grunt.loadNpmTasks('grunt-contrib-sass');
+  grunt.loadNpmTasks('grunt-postcss');
+  grunt.loadNpmTasks('grunt-concurrent');
+
+  grunt.registerTask('default', ['concurrent']);
+};

History.md

@@ -1,440 +0,0 @@
-# Liquid Change Log
-
-## 5.8.0 (unreleased)
-
-## 5.7.2 2025-01-31
-
-* Fix array filters to not support nested properties
-
-## 5.7.1 2025-01-24
-
-* Fix the `find` and `find_index`filters to return `nil` when filtering empty arrays
-* Fix the `has` filter to return `false` when filtering empty arrays
-
-## 5.7.0 2025-01-16
-
-### Features
-
-* Add `find`, `find_index`, `has`, and `reject` filters to arrays
-* Compatibility with Ruby 3.4
-
-## 5.6.4 2025-01-14
-
-### Fixes
-* Add a default `string_scanner` to avoid errors with `Liquid::VariableLookup.parse("foo.bar")` [Ian Ker-Seymer]
-
-## 5.6.3 2025-01-13
-* Remove `lru_redux` dependency [Michael Go]
-
-## 5.6.2 2025-01-13
-
-### Fixes
-* Preserve the old behavior of requiring floats to start with a digit [Michael Go]
-
-## 5.6.1 2025-01-13
-
-### Performance improvements
-* Faster Expression parser / Tokenizer with StringScanner [Michael Go]
-
-## 5.6.0 2024-12-19
-
-### Architectural changes
-* Added new `Environment` class to manage configuration and state that was previously stored in `Template` [Ian Ker-Seymer]
-* Moved tag registration from `Template` to `Environment` [Ian Ker-Seymer]
-* Removed `StrainerFactory` in favor of `Environment`-based strainer creation [Ian Ker-Seymer]
-* Consolidated standard tags into a new `Tags` module with `STANDARD_TAGS` constant [Ian Ker-Seymer]
-
-### Performance improvements
-* Optimized `Lexer` with a new `Lexer2` implementation using jump tables for faster tokenization, requires Ruby 3.4 [Ian Ker-Seymer]
-* Improved variable rendering with specialized handling for different types [Michael Go]
-* Reduced array allocations by using frozen empty constants [Michael Go]
-
-### API changes
-* Deprecated several `Template` class methods in favor of `Environment` methods [Ian Ker-Seymer]
-* Added deprecation warnings system [Ian Ker-Seymer]
-* Changed how filters and tags are registered to use Environment [Ian Ker-Seymer]
-
-### Fixes
-* Fixed table row handling of break interrupts [Alex Coco]
-* Improved variable output handling for arrays [Ian Ker-Seymer]
-* Fix Tokenizer to handle null source value (#1873) [Bahar Pourazar]
-
-## 5.5.0 2024-03-21
-
-Please reference the GitHub release for more information.
-
-## 5.4.0 2022-07-29
-
-### Breaking Changes
-* Drop support for end-of-life Ruby versions (2.5 and 2.6) (#1578) [Andy Waite]
-
-### Features
-* Allow `#` to be used as an inline comment tag (#1498) [CP Clermont]
-
-### Fixes
-* `PartialCache` now shares snippet cache with subcontexts by default (#1553) [Chris AtLee]
-* Hash registers no longer leak into subcontexts as static registers (#1564) [Chris AtLee]
-* Fix `ParseTreeVisitor` for `with` variable expressions in `Render` tag (#1596) [CP Clermont]
-
-### Changed
-* Liquid::Context#registers now always returns a Liquid::Registers object, though supports the most used Hash functions for compatibility (#1553)
-
-## 5.3.0 2022-03-22
-
-### Fixes
-* StandardFilter: Fix missing @context on iterations (#1525) [Thierry Joyal]
-* Fix warning about block and default value in `static_registers.rb` (#1531) [Peter Zhu]
-
-### Deprecation
-* Condition#evaluate to require mandatory context argument in Liquid 6.0.0 (#1527) [Thierry Joyal]
-
-## 5.2.0 2022-03-01
-
-### Features
-* Add `remove_last`, and `replace_last` filters (#1422) [Anders Hagbard]
-* Eagerly cache global filters (#1524) [Jean Boussier]
-
-### Fixes
-* Fix some internal errors in filters from invalid input (#1476) [Dylan Thacker-Smith]
-* Allow dash in filter kwarg name for consistency with Liquid::C (#1518) [CP Clermont]
-
-## 5.1.0 / 2021-09-09
-
-### Features
-* Add `base64_encode`, `base64_decode`, `base64_url_safe_encode`, and `base64_url_safe_decode` filters (#1450) [Daniel Insley]
-* Introduce `to_liquid_value` in `Liquid::Drop` (#1441) [Michael Go]
-
-### Fixes
-* Fix support for using a String subclass for the liquid source (#1421) [Dylan Thacker-Smith]
-* Add `ParseTreeVisitor` to `RangeLookup` (#1470) [CP Clermont]
-* Translate `RangeError` to `Liquid::Error` for `truncatewords` with large int (#1431) [Dylan Thacker-Smith]
-
-## 5.0.1 / 2021-03-24
-
-### Fixes
-* Add ParseTreeVisitor to Echo tag (#1414) [CP Clermont]
-* Test with ruby 3.0 as the latest ruby version (#1398) [Dylan Thacker-Smith]
-* Handle carriage return in newlines_to_br (#1391) [Unending]
-
-### Performance Improvements
-* Use split limit in truncatewords (#1361) [Dylan Thacker-Smith]
-
-## 5.0.0 / 2021-01-06
-
-### Features
-* Add new `{% render %}` tag (#1122) [Samuel Doiron]
-* Add support for `as` in `{% render %}` and `{% include %}` (#1181) [Mike Angell]
-* Add `{% liquid %}` and `{% echo %}` tags (#1086) [Justin Li]
-* Add [usage tracking](README.md#usage-tracking) [Mike Angell]
-* Add `Tag.disable_tags` for disabling tags that prepend `Tag::Disableable` at render time (#1162, #1274, #1275) [Mike Angell]
-* Support using a profiler for multiple renders (#1365, #1366) [Dylan Thacker-Smith]
-
-### Fixes
-* Fix catastrophic backtracking in `RANGES_REGEX` regular expression (#1357) [Dylan Thacker-Smith]
-* Make sure the for tag's limit and offset are integers (#1094) [David Cornu]
-* Invokable methods for enumerable reject include (#1151) [Thierry Joyal]
-* Allow `default` filter to handle `false` as value (#1144) [Mike Angell]
-* Fix render length resource limit so it doesn't multiply nested output (#1285) [Dylan Thacker-Smith]
-* Fix duplication of text in raw tags (#1304) [Peter Zhu]
-* Fix strict parsing of find variable with a name expression (#1317) [Dylan Thacker-Smith]
-* Use monotonic time to measure durations in Liquid::Profiler (#1362) [Dylan Thacker-Smith]
-
-### Breaking Changes
-* Require Ruby >= 2.5 (#1131, #1310) [Mike Angell, Dylan Thacker-Smith]
-* Remove support for taint checking (#1268) [Dylan Thacker-Smith]
-* Split Strainer class into StrainerFactory and StrainerTemplate (#1208) [Thierry Joyal]
-* Remove handling of a nil context in the Strainer class (#1218) [Thierry Joyal]
-* Handle `BlockBody#blank?` at parse time (#1287) [Dylan Thacker-Smith]
-* Pass the tag markup and tokenizer to `Document#unknown_tag` (#1290) [Dylan Thacker-Smith]
-* And several internal changes
-
-### Performance Improvements
-* Reduce allocations (#1073, #1091, #1115, #1099, #1117, #1141, #1322, #1341) [Richard Monette, Florian Weingarten, Ashwin Maroli]
-* Improve resources limits performance (#1093, #1323) [Florian Weingarten, Dylan Thacker-Smith]
-
-## 4.0.3 / 2019-03-12
-
-### Fixed
-* Fix break and continue tags inside included templates in loops (#1072) [Justin Li]
-
-## 4.0.2 / 2019-03-08
-
-### Changed
-* Add `where` filter (#1026) [Samuel Doiron]
-* Add `ParseTreeVisitor` to iterate the Liquid AST (#1025) [Stephen Paul Weber]
-* Improve `strip_html` performance (#1032) [printercu]
-
-### Fixed
-* Add error checking for invalid combinations of inputs to sort, sort_natural, where, uniq, map, compact filters (#1059) [Garland Zhang]
-* Validate the character encoding in url_decode (#1070) [Clayton Smith]
-
-## 4.0.1 / 2018-10-09
-
-### Changed
-* Add benchmark group in Gemfile (#855) [Jerry Liu]
-* Allow benchmarks to benchmark render by itself (#851) [Jerry Liu]
-* Avoid calling `line_number` on String node when rescuing a render error. (#860) [Dylan Thacker-Smith]
-* Avoid duck typing to detect whether to call render on a node. [Dylan Thacker-Smith]
-* Clarify spelling of `reversed` on `for` block tag (#843) [Mark Crossfield]
-* Replace recursion with loop to avoid potential stack overflow from malicious input (#891, #892) [Dylan Thacker-Smith]
-* Limit block tag nesting to 100 (#894) [Dylan Thacker-Smith]
-* Replace `assert_equal nil` with `assert_nil` (#895) [Dylan Thacker-Smith]
-* Remove Spy Gem (#896) [Dylan Thacker-Smith]
-* Add `collection_name` and `variable_name` reader to `For` block (#909)
-* Symbols render as strings (#920) [Justin Li]
-* Remove default value from Hash objects (#932) [Maxime Bedard]
-* Remove one level of nesting (#944) [Dylan Thacker-Smith]
-* Update Rubocop version (#952) [Justin Li]
-* Add `at_least` and `at_most` filters (#954, #958) [Nithin Bekal]
-* Add a regression test for a liquid-c trim mode bug (#972) [Dylan Thacker-Smith]
-* Use https rather than git protocol to fetch liquid-c [Dylan Thacker-Smith]
-* Add tests against Ruby 2.4 (#963) and 2.5 (#981)
-* Replace RegExp literals with constants (#988) [Ashwin Maroli]
-* Replace unnecessary `#each_with_index` with `#each` (#992) [Ashwin Maroli]
-* Improve the unexpected end delimiter message for block tags. (#1003) [Dylan Thacker-Smith]
-* Refactor and optimize rendering (#1005) [Christopher Aue]
-* Add installation instruction (#1006) [Ben Gift]
-* Remove Circle CI (#1010)
-* Rename deprecated `BigDecimal.new` to `BigDecimal` (#1024) [Koichi ITO]
-* Rename deprecated Rubocop name (#1027) [Justin Li]
-
-### Fixed
-* Handle `join` filter on non String joiners (#857) [Richard Monette]
-* Fix duplicate inclusion condition logic error of `Liquid::Strainer.add_filter` method (#861)
-* Fix `escape`, `url_encode`, `url_decode` not handling non-string values (#898) [Thierry Joyal]
-* Fix raise when variable is defined but nil when using `strict_variables` [Pascal Betz]
-* Fix `sort` and `sort_natural` to handle arrays with nils (#930) [Eric Chan]
-
-## 4.0.0 / 2016-12-14 / branch "4-0-stable"
-
-### Changed
-* Render an opaque internal error by default for non-Liquid::Error (#835) [Dylan Thacker-Smith]
-* Ruby 2.0 support dropped (#832) [Dylan Thacker-Smith]
-* Add to_number Drop method to allow custom drops to work with number filters (#731)
-* Add strict_variables and strict_filters options to detect undefined references (#691)
-* Improve loop performance (#681) [Florian Weingarten]
-* Rename Drop method `before_method` to `liquid_method_missing` (#661) [Thierry Joyal]
-* Add url_decode filter to invert url_encode (#645) [Larry Archer]
-* Add global_filter to apply a filter to all output (#610) [Loren Hale]
-* Add compact filter (#600) [Carson Reinke]
-* Rename deprecated "has_key?" and "has_interrupt?" methods (#593) [Florian Weingarten]
-* Include template name with line numbers in render errors (574) [Dylan Thacker-Smith]
-* Add sort_natural filter (#554) [Martin Hanzel]
-* Add forloop.parentloop as a reference to the parent loop (#520) [Justin Li]
-* Block parsing moved to BlockBody class (#458) [Dylan Thacker-Smith]
-* Add concat filter to concatenate arrays (#429) [Diogo Beato]
-* Ruby 1.9 support dropped (#491) [Justin Li]
-* Liquid::Template.file_system's read_template_file method is no longer passed the context. (#441) [James Reid-Smith]
-* Remove `liquid_methods` (See https://github.com/Shopify/liquid/pull/568 for replacement)
-* Liquid::Template.register_filter raises when the module overrides registered public methods as private or protected (#705) [Gaurav Chande]
-
-### Fixed
-
-* Fix variable names being detected as an operator when starting with contains (#788) [Michael Angell]
-* Fix include tag used with strict_variables (#828) [QuickPay]
-* Fix map filter when value is a Proc (#672) [Guillaume Malette]
-* Fix truncate filter when value is not a string (#672) [Guillaume Malette]
-* Fix behaviour of escape filter when input is nil (#665) [Tanel Jakobsoo]
-* Fix sort filter behaviour with empty array input (#652) [Marcel Cary]
-* Fix test failure under certain timezones (#631) [Dylan Thacker-Smith]
-* Fix bug in uniq filter (#595) [Florian Weingarten]
-* Fix bug when "blank" and "empty" are used as variable names (#592) [Florian Weingarten]
-* Fix condition parse order in strict mode (#569) [Justin Li]
-* Fix naming of the "context variable" when dynamically including a template (#559) [Justin Li]
-* Gracefully accept empty strings in the date filter (#555) [Loren Hale]
-* Fix capturing into variables with a hyphen in the name (#505) [Florian Weingarten]
-* Fix case sensitivity regression in date standard filter (#499) [Kelley Reynolds]
-* Disallow filters with no variable in strict mode (#475) [Justin Li]
-* Disallow variable names in the strict parser that are not valid in the lax parser (#463) [Justin Li]
-* Fix BlockBody#warnings taking exponential time to compute (#486) [Justin Li]
-
-## 3.0.5 / 2015-07-23 / branch "3-0-stable"
-
-* Fix test failure under certain timezones [Dylan Thacker-Smith]
-
-## 3.0.4 / 2015-07-17
-
-* Fix chained access to multi-dimensional hashes [Florian Weingarten]
-
-## 3.0.3 / 2015-05-28
-
-* Fix condition parse order in strict mode (#569) [Justin Li]
-
-## 3.0.2 / 2015-04-24
-
-* Expose VariableLookup private members (#551) [Justin Li]
-* Documentation fixes
-
-## 3.0.1 / 2015-01-23
-
-* Remove duplicate `index0` key in TableRow tag (#502) [Alfred Xing]
-
-## 3.0.0 / 2014-11-12
-
-* Removed Block#end_tag. Instead, override parse with `super` followed by your code. See #446 [Dylan Thacker-Smith]
-* Fixed condition with wrong data types (#423) [Bogdan Gusiev]
-* Add url_encode to standard filters (#421) [Derrick Reimer]
-* Add uniq to standard filters [Florian Weingarten]
-* Add exception_handler feature (#397) and #254 [Bogdan Gusiev, Florian Weingarten]
-* Optimize variable parsing to avoid repeated regex evaluation during template rendering #383 [Jason Hiltz-Laforge]
-* Optimize checking for block interrupts to reduce object allocation #380 [Jason Hiltz-Laforge]
-* Properly set context rethrow_errors on render! #349 [Thierry Joyal]
-* Fix broken rendering of variables which are equal to false (#345) [Florian Weingarten]
-* Remove ActionView template handler [Dylan Thacker-Smith]
-* Freeze lots of string literals for new Ruby 2.1 optimization (#297) [Florian Weingarten]
-* Allow newlines in tags and variables (#324) [Dylan Thacker-Smith]
-* Tag#parse is called after initialize, which now takes options instead of tokens as the 3rd argument. See #321 [Dylan Thacker-Smith]
-* Raise `Liquid::ArgumentError` instead of `::ArgumentError` when filter has wrong number of arguments #309 [Bogdan Gusiev]
-* Add a to_s default for liquid drops (#306) [Adam Doeler]
-* Add strip, lstrip, and rstrip to standard filters [Florian Weingarten]
-* Make if, for & case tags return complete and consistent nodelists (#250) [Nick Jones]
-* Prevent arbitrary method invocation on condition objects (#274) [Dylan Thacker-Smith]
-* Don't call to_sym when creating conditions for security reasons (#273) [Bouke van der Bijl]
-* Fix resource counting bug with respond_to?(:length) (#263) [Florian Weingarten]
-* Allow specifying custom patterns for template filenames (#284) [Andrei Gladkyi]
-* Allow drops to optimize loading a slice of elements (#282) [Tom Burns]
-* Support for passing variables to snippets in subdirs (#271) [Joost Hietbrink]
-* Add a class cache to avoid runtime extend calls (#249) [James Tucker]
-* Remove some legacy Ruby 1.8 compatibility code (#276) [Florian Weingarten]
-* Add default filter to standard filters (#267) [Derrick Reimer]
-* Add optional strict parsing and warn parsing (#235) [Tristan Hume]
-* Add I18n syntax error translation (#241) [Simon Hørup Eskildsen, Sirupsen]
-* Make sort filter work on enumerable drops (#239) [Florian Weingarten]
-* Fix clashing method names in enumerable drops (#238) [Florian Weingarten]
-* Make map filter work on enumerable drops (#233) [Florian Weingarten]
-* Improved whitespace stripping for blank blocks, related to #216 [Florian Weingarten]
-
-## 2.6.3 / 2015-07-23 / branch "2-6-stable"
-
-* Fix test failure under certain timezones [Dylan Thacker-Smith]
-
-## 2.6.2 / 2015-01-23
-
-* Remove duplicate hash key [Parker Moore]
-
-## 2.6.1 / 2014-01-10
-
-Security fix, cherry-picked from master (4e14a65):
-* Don't call to_sym when creating conditions for security reasons (#273) [Bouke van der Bijl]
-* Prevent arbitrary method invocation on condition objects (#274) [Dylan Thacker-Smith]
-
-## 2.6.0 / 2013-11-25
-
-IMPORTANT: Liquid 2.6 is going to be the last version of Liquid which maintains explicit Ruby 1.8 compatability.
-The following releases will only be tested against Ruby 1.9 and Ruby 2.0 and are likely to break on Ruby 1.8.
-
-* Bugfix for #106: fix example servlet [gnowoel]
-* Bugfix for #97: strip_html filter supports multi-line tags [Jo Liss]
-* Bugfix for #114: strip_html filter supports style tags [James Allardice]
-* Bugfix for #117: 'now' support for date filter in Ruby 1.9 [Notre Dame Webgroup]
-* Bugfix for #166: truncate filter on UTF-8 strings with Ruby 1.8 [Florian Weingarten]
-* Bugfix for #204: 'raw' parsing bug [Florian Weingarten]
-* Bugfix for #150: 'for' parsing bug [Peter Schröder]
-* Bugfix for #126: Strip CRLF in strip_newline [Peter Schröder]
-* Bugfix for #174, "can't convert Fixnum into String" for "replace" [jsw0528]
-* Allow a Liquid::Drop to be passed into Template#render [Daniel Huckstep]
-* Resource limits [Florian Weingarten]
-* Add reverse filter [Jay Strybis]
-* Add utf-8 support
-* Use array instead of Hash to keep the registered filters [Tasos Stathopoulos]
-* Cache tokenized partial templates [Tom Burns]
-* Avoid warnings in Ruby 1.9.3 [Marcus Stollsteimer]
-* Better documentation for 'include' tag (closes #163) [Peter Schröder]
-* Use of BigDecimal on filters to have better precision (closes #155) [Arthur Nogueira Neves]
-
-## 2.5.5 / 2014-01-10 / branch "2-5-stable"
-
-Security fix, cherry-picked from master (4e14a65):
-* Don't call to_sym when creating conditions for security reasons (#273) [Bouke van der Bijl]
-* Prevent arbitrary method invocation on condition objects (#274) [Dylan Thacker-Smith]
-
-## 2.5.4 / 2013-11-11
-
-* Fix "can't convert Fixnum into String" for "replace" (#173), [jsw0528]
-
-## 2.5.3 / 2013-10-09
-
-* #232, #234, #237: Fix map filter bugs [Florian Weingarten]
-
-## 2.5.2 / 2013-09-03 / deleted
-
-Yanked from rubygems, as it contained too many changes that broke compatibility. Those changes will be on following major releases.
-
-## 2.5.1 / 2013-07-24
-
-* #230: Fix security issue with map filter, Use invoke_drop in map filter [Florian Weingarten]
-
-## 2.5.0 / 2013-03-06
-
-* Prevent Object methods from being called on drops
-* Avoid symbol injection from liquid
-* Added break and continue statements
-* Fix filter parser for args without space separators
-* Add support for filter keyword arguments
-
-
-## 2.4.0 / 2012-08-03
-
-* Performance improvements
-* Allow filters in `assign`
-* Add `modulo` filter
-* Ruby 1.8, 1.9, and Rubinius compatibility fixes
-* Add support for `quoted['references']` in `tablerow`
-* Add support for Enumerable to `tablerow`
-* `strip_html` filter removes html comments
-
-
-## 2.3.0 / 2011-10-16
-
-* Several speed/memory improvements
-* Numerous bug fixes
-* Added support for MRI 1.9, Rubinius, and JRuby
-* Added support for integer drop parameters
-* Added epoch support to `date` filter
-* New `raw` tag that suppresses parsing
-* Added `else` option to `for` tag
-* New `increment` tag
-* New `split` filter
-
-
-## 2.2.1 / 2010-08-23
-
-* Added support for literal tags
-
-
-## 2.2.0 / 2010-08-22
-
-* Compatible with Ruby 1.8.7, 1.9.1 and 1.9.2-p0
-* Merged some changed made by the community
-
-
-## 1.9.0 / 2008-03-04
-
-* Fixed gem install rake task
-* Improve Error encapsulation in liquid by maintaining a own set of exceptions instead of relying on ruby build ins
-
-
-## Before 1.9.0
-
-* Added If with or / and expressions
-* Implemented .to_liquid for all objects which can be passed to liquid like Strings Arrays Hashes Numerics and Booleans. To export new objects to liquid just implement .to_liquid on them and return objects which themselves have .to_liquid methods.
-* Added more tags to standard library
-* Added include tag ( like partials in rails )
-* [...] Gazillion of detail improvements
-* Added strainers as filter hosts for better security [Tobias Luetke]
-* Fixed that rails integration would call filter with the wrong "self" [Michael Geary]
-* Fixed bad error reporting when a filter called a method which doesn't exist. Liquid told you that it couldn't find the filter which was obviously misleading [Tobias Luetke]
-* Removed count helper from standard lib. use size [Tobias Luetke]
-* Fixed bug with string filter parameters failing to tolerate commas in strings. [Paul Hammond]
-* Improved filter parameters. Filter parameters are now context sensitive; Types are resolved according to the rules of the context. Multiple parameters are now separated by the Liquid::ArgumentSeparator: , by default [Paul Hammond]
-    {{ 'Typo' | link_to: 'http://typo.leetsoft.com', 'Typo - a modern weblog engine' }}
-* Added Liquid::Drop. A base class which you can use for exporting proxy objects to liquid which can acquire more data when used in liquid. [Tobias Luetke]
-
-  class ProductDrop < Liquid::Drop
-    def top_sales
-       Shop.current.products.find(:all, :order => 'sales', :limit => 10 )
-    end
-  end
-  t = Liquid::Template.parse( ' {% for product in product.top_sales %} {{ product.name }} {% endfor %} '  )
-  t.render('product' => ProductDrop.new )
-* Added filter parameters support. Example: {{ date | format_date: "%Y" }} [Paul Hammond]

LICENSE

@@ -1,20 +0,0 @@
-Copyright (c) 2005, 2006 Tobias Luetke
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -1,156 +1,9 @@
-[![Build status](https://github.com/Shopify/liquid/actions/workflows/liquid.yml/badge.svg)](https://github.com/Shopify/liquid/actions/workflows/liquid.yml)
-[![Inline docs](http://inch-ci.org/github/Shopify/liquid.svg?branch=master)](http://inch-ci.org/github/Shopify/liquid)
+# New Liquid Docs
 
-# Liquid template engine
+To run, follow these steps:
 
-* [Contributing guidelines](CONTRIBUTING.md)
-* [Version history](History.md)
-* [Liquid documentation from Shopify](https://shopify.dev/docs/api/liquid)
-* [Liquid Wiki at GitHub](https://github.com/Shopify/liquid/wiki)
-* [Website](http://liquidmarkup.org/)
+1. Download ZIP or clone in GitHub
+2. Navigate to `liquid` folder
+3. Run `jekyll watch`
+4. Open `http://127.0.0.1:4000` in your browser
 
-## Introduction
-
-Liquid is a template engine which was written with very specific requirements:
-
-* It has to have beautiful and simple markup. Template engines which don't produce good looking markup are no fun to use.
-* It needs to be non evaling and secure. Liquid templates are made so that users can edit them. You don't want to run code on your server which your users wrote.
-* It has to be stateless. Compile and render steps have to be separate so that the expensive parsing and compiling can be done once and later on you can just render it passing in a hash with local variables and objects.
-
-## Why you should use Liquid
-
-* You want to allow your users to edit the appearance of your application but don't want them to run **insecure code on your server**.
-* You want to render templates directly from the database.
-* You like smarty (PHP) style template engines.
-* You need a template engine which does HTML just as well as emails.
-* You don't like the markup of your current templating engine.
-
-## What does it look like?
-
-```html
-<ul id="products">
-  {% for product in products %}
-    <li>
-      <h2>{{ product.name }}</h2>
-      Only {{ product.price | price }}
-
-      {{ product.description | prettyprint | paragraph }}
-    </li>
-  {% endfor %}
-</ul>
-```
-
-## How to use Liquid
-
-Install Liquid by adding `gem 'liquid'` to your gemfile.
-
-Liquid supports a very simple API based around the Liquid::Template class.
-For standard use you can just pass it the content of a file and call render with a parameters hash.
-
-```ruby
-@template = Liquid::Template.parse("hi {{name}}") # Parses and compiles the template
-@template.render('name' => 'tobi')                # => "hi tobi"
-```
-
-### Concept of Environments
-
-In Liquid, a "Environment" is a scoped environment that encapsulates custom tags, filters, and other configurations. This allows you to define and isolate different sets of functionality for different contexts, avoiding global overrides that can lead to conflicts and unexpected behavior.
-
-By using environments, you can:
-
-1. **Encapsulate Logic**: Keep the logic for different parts of your application separate.
-2. **Avoid Conflicts**: Prevent custom tags and filters from clashing with each other.
-3. **Improve Maintainability**: Make it easier to manage and understand the scope of customizations.
-4. **Enhance Security**: Limit the availability of certain tags and filters to specific contexts.
-
-We encourage the use of Environments over globally overriding things because it promotes better software design principles such as modularity, encapsulation, and separation of concerns.
-
-Here's an example of how you can define and use Environments in Liquid:
-
-```ruby
-user_environment = Liquid::Environment.build do |environment|
-  environment.register_tag("renderobj", RenderObjTag)
-end
-
-Liquid::Template.parse(<<~LIQUID, environment: user_environment)
-  {% renderobj src: "path/to/model.obj" %}
-LIQUID
-```
-
-In this example, `RenderObjTag` is a custom tag that is only available within the `user_environment`.
-
-Similarly, you can define another environment for a different context, such as email templates:
-
-```ruby
-email_environment = Liquid::Environment.build do |environment|
-  environment.register_tag("unsubscribe_footer", UnsubscribeFooter)
-end
-
-Liquid::Template.parse(<<~LIQUID, environment: email_environment)
-  {% unsubscribe_footer %}
-LIQUID
-```
-
-By using Environments, you ensure that custom tags and filters are only available in the contexts where they are needed, making your Liquid templates more robust and easier to manage. For smaller projects, a global environment is available via `Liquid::Environment.default`.
-
-### Error Modes
-
-Setting the error mode of Liquid lets you specify how strictly you want your templates to be interpreted.
-Normally the parser is very lax and will accept almost anything without error. Unfortunately this can make
-it very hard to debug and can lead to unexpected behaviour.
-
-Liquid also comes with a stricter parser that can be used when editing templates to give better error messages
-when templates are invalid. You can enable this new parser like this:
-
-```ruby
-Liquid::Environment.default.error_mode = :strict
-Liquid::Environment.default.error_mode = :strict # Raises a SyntaxError when invalid syntax is used
-Liquid::Environment.default.error_mode = :warn # Adds strict errors to template.errors but continues as normal
-Liquid::Environment.default.error_mode = :lax # The default mode, accepts almost anything.
-```
-
-If you want to set the error mode only on specific templates you can pass `:error_mode` as an option to `parse`:
-```ruby
-Liquid::Template.parse(source, error_mode: :strict)
-```
-This is useful for doing things like enabling strict mode only in the theme editor.
-
-It is recommended that you enable `:strict` or `:warn` mode on new apps to stop invalid templates from being created.
-It is also recommended that you use it in the template editors of existing apps to give editors better error messages.
-
-### Undefined variables and filters
-
-By default, the renderer doesn't raise or in any other way notify you if some variables or filters are missing, i.e. not passed to the `render` method.
-You can improve this situation by passing `strict_variables: true` and/or `strict_filters: true` options to the `render` method.
-When one of these options is set to true, all errors about undefined variables and undefined filters will be stored in `errors` array of a `Liquid::Template` instance.
-Here are some examples:
-
-```ruby
-template = Liquid::Template.parse("{{x}} {{y}} {{z.a}} {{z.b}}")
-template.render({ 'x' => 1, 'z' => { 'a' => 2 } }, { strict_variables: true })
-#=> '1  2 ' # when a variable is undefined, it's rendered as nil
-template.errors
-#=> [#<Liquid::UndefinedVariable: Liquid error: undefined variable y>, #<Liquid::UndefinedVariable: Liquid error: undefined variable b>]
-```
-
-```ruby
-template = Liquid::Template.parse("{{x | filter1 | upcase}}")
-template.render({ 'x' => 'foo' }, { strict_filters: true })
-#=> '' # when at least one filter in the filter chain is undefined, a whole expression is rendered as nil
-template.errors
-#=> [#<Liquid::UndefinedFilter: Liquid error: undefined filter filter1>]
-```
-
-If you want to raise on a first exception instead of pushing all of them in `errors`, you can use `render!` method:
-
-```ruby
-template = Liquid::Template.parse("{{x}} {{y}}")
-template.render!({ 'x' => 1}, { strict_variables: true })
-#=> Liquid::UndefinedVariable: Liquid error: undefined variable y
-```
-
-### Usage tracking
-
-To help track usages of a feature or code path in production, we have released opt-in usage tracking. To enable this, we provide an empty `Liquid:: Usage.increment` method which you can customize to your needs. The feature is well suited to https://github.com/Shopify/statsd-instrument. However, the choice of implementation is up to you.
-
-Once you have enabled usage tracking, we recommend reporting any events through Github Issues that your system may be logging. It is highly likely this event has been added to consider deprecating or improving code specific to this event, so please raise any concerns.

Rakefile

@@ -1,137 +0,0 @@
-# frozen_string_literal: true
-
-require 'rake'
-require 'rake/testtask'
-$LOAD_PATH.unshift(File.expand_path("../lib", __FILE__))
-require "liquid/version"
-
-task(default: [:test, :rubocop])
-
-desc('run test suite with default parser')
-Rake::TestTask.new(:base_test) do |t|
-  t.libs << 'lib' << 'test'
-  t.test_files = FileList['test/{integration,unit}/**/*_test.rb']
-  t.verbose    = false
-end
-
-Rake::TestTask.new(:integration_test) do |t|
-  t.libs << 'lib' << 'test'
-  t.test_files = FileList['test/integration/**/*_test.rb']
-  t.verbose    = false
-end
-
-desc('run test suite with warn error mode')
-task :warn_test do
-  ENV['LIQUID_PARSER_MODE'] = 'warn'
-  Rake::Task['base_test'].invoke
-end
-
-task :rubocop do
-  if RUBY_ENGINE == 'ruby'
-    require 'rubocop/rake_task'
-    RuboCop::RakeTask.new
-  end
-end
-
-desc('runs test suite with both strict and lax parsers')
-task :test do
-  ENV['LIQUID_PARSER_MODE'] = 'lax'
-  Rake::Task['base_test'].invoke
-
-  ENV['LIQUID_PARSER_MODE'] = 'strict'
-  Rake::Task['base_test'].reenable
-  Rake::Task['base_test'].invoke
-
-  if RUBY_ENGINE == 'ruby' || RUBY_ENGINE == 'truffleruby'
-    ENV['LIQUID_PARSER_MODE'] = 'lax'
-    Rake::Task['integration_test'].reenable
-    Rake::Task['integration_test'].invoke
-
-    ENV['LIQUID_PARSER_MODE'] = 'strict'
-    Rake::Task['integration_test'].reenable
-    Rake::Task['integration_test'].invoke
-  end
-end
-
-task(gem: :build)
-task :build do
-  system "gem build liquid.gemspec"
-end
-
-task install: :build do
-  system "gem install liquid-#{Liquid::VERSION}.gem"
-end
-
-task release: :build do
-  system "git tag -a v#{Liquid::VERSION} -m 'Tagging #{Liquid::VERSION}'"
-  system "git push --tags"
-  system "gem push liquid-#{Liquid::VERSION}.gem"
-  system "rm liquid-#{Liquid::VERSION}.gem"
-end
-
-namespace :benchmark do
-  desc "Run the liquid benchmark with lax parsing"
-  task :lax do
-    ruby "./performance/benchmark.rb lax"
-  end
-
-  desc "Run the liquid benchmark with strict parsing"
-  task :strict do
-    ruby "./performance/benchmark.rb strict"
-  end
-
-  desc "Run the liquid benchmark with both lax and strict parsing"
-  task run: [:lax, :strict]
-
-  desc "Run unit benchmarks"
-  namespace :unit do
-    task :all do
-      Dir["./performance/unit/*_benchmark.rb"].each do |file|
-        puts "🧪 Running #{file}"
-        ruby file
-      end
-    end
-
-    task :lexer do
-      Dir["./performance/unit/lexer_benchmark.rb"].each do |file|
-        puts "🧪 Running #{file}"
-        ruby file
-      end
-    end
-
-    task :expression do
-      Dir["./performance/unit/expression_benchmark.rb"].each do |file|
-        puts "🧪 Running #{file}"
-        ruby file
-      end
-    end
-  end
-end
-
-namespace :profile do
-  desc "Run the liquid profile/performance coverage"
-  task :run do
-    ruby "./performance/profile.rb"
-  end
-
-  desc "Run the liquid profile/performance coverage with strict parsing"
-  task :strict do
-    ruby "./performance/profile.rb strict"
-  end
-end
-
-namespace :memory_profile do
-  desc "Run memory profiler"
-  task :run do
-    ruby "./performance/memory_profile.rb"
-  end
-end
-
-desc("Run example")
-task :example do
-  ruby "-w -d -Ilib example/server/server.rb"
-end
-
-task :console do
-  exec 'irb -I lib -r liquid'
-end

_config.yml

@@ -0,0 +1,25 @@
+title: Liquid Templating Engine
+description: "Liquid is a template language and accompanying rendering engine. It is built for security, so is perfect for rendering custom templates from your users."
+
+repository: https://github.com/Shopify/liquid
+
+# Build settings
+baseurl:                "" # the subpath of your site, e.g. /blog/
+url:                    http://liquidmarkup.org # the base hostname & protocol for your site
+markdown:               redcarpet
+redcarpet:
+  extensions:           ["with_toc_data", "tables", "disable_indented_code_blocks", "no_intra_emphasis"]
+highlighter:            pygments
+permalink:              pretty
+exclude:
+  - README.md
+  - CNAME
+  - node_modules
+keep_files:             ["css"]
+
+# Front matter defaults
+defaults:
+  - scope:
+      path: "" # an empty string here means all files in the project
+    values:
+      layout: default

_includes/home-banner.html

@@ -0,0 +1,8 @@
+<header class="home-banner">
+  <h1>Liquid</h1>
+  <p>Safe, customer facing template language for flexible web apps.</p>
+  <p class="btn-row">
+    <a href="https://github.com/Shopify/liquid/archive/master.zip" target="_blank" class="btn"><i class="icon fa fa-2x fa-arrow-circle-down"></i>Download</a>
+    <a href="https://github.com/Shopify/liquid" target="_blank" class="btn"><i class="icon fa fa-2x fa-github"></i>View on Github</a>
+  </p>
+</header>

_includes/home-users-grid.html

@@ -0,0 +1,24 @@
+<div class="home-users-grid">
+  <div class="home-users-grid__item">
+    <a href="http://jekyllrb.com/" target="_blank">
+      <img src="/images/jekyll-logo.png" />
+    </a>
+  </div>
+  <div class="home-users-grid__item">
+    <a href="http://www.desk.com/" target="_blank">
+      <img src="/images/salesforcedesk-logo.png" />
+    </a>
+  </div>
+  <div class="home-users-grid__item">
+    <a href="https://www.zendesk.com/ " target="_blank">
+      <img src="/images/zendesk-logo.png" />
+    </a>
+  </div>
+  <div class="home-users-grid__item">
+    <a href="http://500px.com/" target="_blank">
+      <img src="/images/500px-logo.png" />
+    </a>
+  </div>
+</div>
+
+<p class="home-users-blurb">...and <a href="https://github.com/Shopify/liquid/wiki#who-uses-liquid" target="_blank">many more!</a></p>

_includes/sidebar.html

@@ -0,0 +1,18 @@
+<div class="sidebar">
+  <div class="sidebar--logo">
+    <a href="/">Liquid</a>
+  </div>
+  <nav class="sidebar--nav"> {% assign sections = "basics, tags, filters" | split: ", " %}
+
+    {% for section in sections %}
+    <h3 class="section__header">{{ section | capitalize }}</h3>
+
+    <ul class="section__links">
+    {% for item in site.pages %}{% if item.url contains section/ %}{% unless item.path contains "index" %}
+      <li><a href="{{ item.url | prepend: site.baseurl }}" class="section__link{% if item.url contains page.url and page.url != "/" %} section__link--is-active {% endif %}">{{ item.title }}</a></li>
+    {% endunless %}{% endif %}{% endfor %}
+    </ul>
+    {% endfor %}
+
+  </nav>
+</div>

_layouts/default.html

@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>{% if page.title %}{{ page.title }} – {% endif %}{{ site.title }}</title>
+
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}">
+
+    <link rel="stylesheet" href="{{ '/css/main.css' | prepend: site.baseurl }}">
+    <link href='http://fonts.googleapis.com/css?family=Droid+Sans:400,700' rel='stylesheet' type='text/css'>
+    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
+    <link rel="canonical" href="{{ page.url | replace:'index.html','' | prepend: site.baseurl | prepend: site.url }}">
+    <link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ "/feed.xml" | prepend: site.baseurl | prepend: site.url }}" />
+  </head>
+
+  <body>
+    {% include sidebar.html %}
+
+    <div class="content__area">
+      <div class="content">
+        <h1>{{ page.title }}</h1>
+        {{ content }}
+      </div>
+    </div>
+
+  </body>
+</html>

_sass/main.scss

@@ -0,0 +1,17 @@
+
+@charset "utf-8";
+
+@import "partials/defaults";
+@import "partials/colors";
+@import "partials/helpers";
+
+@import "modules/base";
+@import "modules/layout";
+@import "modules/buttons";
+@import "modules/home-banner";
+@import "modules/home-users-grid";
+@import "modules/content-area";
+
+@import "vendors/syntax-highlighting";
+
+

_sass/modules/_base.scss

@@ -0,0 +1,185 @@
+* {
+  box-sizing: border-box;
+}
+
+/**
+ * Reset some basic elements
+ */
+body, h1, h2, h3, h4, h5, h6,
+p, blockquote, pre, hr,
+dl, dd, ol, ul, figure {
+    margin: 0;
+    padding: 0;
+}
+
+/**
+ * Basic styling
+ */
+body {
+  font-family: $base-font-family;
+  font-size: $base-font-size;
+  line-height: $base-line-height;
+  font-weight: 300;
+  color: $color-slate;
+  -webkit-text-size-adjust: 100%;
+}
+
+/** Set `margin-bottom` to maintain vertical rhythm */
+
+h1, h2, h3, h4, h5, h6,
+p, blockquote, pre,
+ul, ol, dl, figure,
+%vertical-rhythm {
+  margin-bottom: $spacing-unit / 2;
+}
+
+/** Images */
+
+img {
+  max-width: 100%;
+  vertical-align: middle;
+}
+
+/** Figures */
+
+figure > img {
+  display: block;
+}
+
+figcaption {
+  font-size: $small-font-size;
+}
+
+/** Lists */
+ul, ol {
+  margin-left: $spacing-unit;
+}
+
+li {
+  > ul, > ol {
+    margin-bottom: 0;
+  }
+}
+
+/** Headings */
+
+h1, h2, h3, h4, h5, h6 {
+  font-weight: bold;
+}
+
+/** Links */
+a {
+    color: $color-blue-5;
+
+    &:visited {
+      color: #609;
+    }
+
+    &:hover {
+        text-decoration: underline;
+    }
+}
+
+h1 {
+  font-size: 2em;
+}
+
+h2 {
+  font-size: 1.5em;
+  text-decoration: underline;
+  margin-top: $spacing-unit;
+}
+
+h3 {
+  font-size: 1em;
+  text-decoration: underline;
+}
+
+h4 {
+  font-size: 1em;
+}
+
+blockquote {
+  color: lighten($color-slate, 30%);
+  border-left: 2px solid lighten($color-slate, 50%);
+  padding-left: $spacing-unit / 2;
+  letter-spacing: -1px;
+  font-style: italic;
+
+  > :last-child {
+    margin-bottom: 0;
+  }
+}
+
+pre, code {
+  font-size: 15px;
+  border-radius: 3px;
+  background-color: lighten($color-blue-1, 0.9);
+}
+
+code {
+  padding: 1px 5px;
+}
+
+pre {
+  padding: 8px 12px;
+  border: 1px solid $color-blue-2;
+  word-wrap: break-word;
+
+  > code {
+    border: 0;
+    padding-right: 0;
+    padding-left: 0;
+  }
+}
+
+hr {
+  display: block;
+  height: 1px;
+  border: 0;
+  background-color: lighten($color-slate, 50%);
+  margin-bottom: $spacing-unit/2;
+}
+
+table {
+  width: 100%;
+  overflow: auto;
+  display: block;
+  margin: 15px 0;
+  border-collapse: collapse;
+  thead {
+    margin: 0;
+    padding: 0;
+    border: 0;
+    font-size: 100%;
+    font: inherit;
+    vertical-align: baseline;
+  }
+  th {
+    border: 1px solid #ddd;
+    padding: 6px 13px;
+    font-weight: bold;
+    text-align: center;
+  }
+  tbody {
+    vertical-align: middle;
+    border-color: inherit;
+  }
+  tr {
+    border-top: 1px solid #ccc;
+    background-color: #fff;
+    vertical-align: inherit;
+  }
+  td {
+    border: 1px solid #ddd;
+    padding: 6px 13px;
+  }
+  /* Don't use a margin on code samples within tables */
+  pre {
+    margin-bottom: 0;
+  }
+}
+
+p {
+  line-height: 1.8;
+}

_sass/modules/_buttons.scss

@@ -0,0 +1,34 @@
+.btn {
+  color: $color-white;
+  display: flex;
+  background: $color-blue-5;
+  align-items: center;
+  padding: $spacing-unit/4 $spacing-unit/2;
+  border-radius: 8px;
+  text-decoration: none;
+
+  &:hover {
+    background: $color-blue-4;
+    cursor: pointer;
+    text-decoration: none;
+  }
+}
+
+.btn:visited {
+  color: $color-white;
+}
+
+.btn-row {
+  display: flex;
+  justify-content: center;
+  margin-bottom: 0;
+
+  .btn:not(:first-child) {
+    margin-left: $spacing-unit / 2;
+  }
+}
+
+.icon {
+  vertical-align: middle;
+  margin-right: $spacing-unit / 4;
+}

_sass/modules/_content-area.scss

@@ -0,0 +1,31 @@
+.content__item {
+  margin-bottom: $spacing-unit * 2;
+}
+
+.highlight {
+
+  pre {
+    border-top: none;
+    border-radius: 0 0 3px 3px;
+  }
+
+  &:before {
+    content: "Example";
+    display: block;
+    padding: 8px 12px;
+    color: $color-slate;
+    background: #fff;
+    border: 1px solid $color-blue-2;
+    border-radius: 3px 3px 0 0;
+    font-size: 16px;
+    font-weight: bold;
+  }
+
+  // Label every second code block with "Output"
+  & + .highlight:nth-of-type(2n) {
+    &:before {
+      content: "Output";
+    }
+  }
+
+}

_sass/modules/_home-banner.scss

@@ -0,0 +1,11 @@
+.home-banner {
+  text-align: center;
+  border-bottom: 1px solid lighten($color-slate, 50%);
+  padding-bottom: $spacing-unit;
+  margin-bottom: $spacing-unit;
+
+  h1 {
+    font-weight: bold;
+    font-size: 5em;
+  }
+}

_sass/modules/_home-users-grid.scss

@@ -0,0 +1,20 @@
+.home-users-grid {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  margin-bottom: $spacing-unit / 2;
+}
+
+.home-users-grid__item{
+  flex: 1;
+  margin-right: $spacing-unit / 2;
+  max-width: 50%;
+
+  &:last-child {
+    margin-right: 0;
+  }
+}
+
+.home-users-blurb {
+  text-align: right;
+}

_sass/modules/_layout.scss

@@ -0,0 +1,112 @@
+
+$sidebar-width: 250px;
+$logo-height: 130px;
+$wrapper-width: 800px;
+
+/*============================================================================
+  Content Area
+ ==============================================================================*/
+
+.content__area {
+  padding: $spacing-unit $spacing-unit $spacing-unit ($spacing-unit + $sidebar-width);
+  width: 100%;
+}
+
+.content {
+  max-width: $wrapper-width;
+  margin: 0 auto;
+  padding: 0 $spacing-unit;
+  @extend %clearfix;
+}
+
+/*============================================================================
+  Sidebar
+ ==============================================================================*/
+
+.sidebar {
+  background: $color-blue-5;
+  width: $sidebar-width;
+  height: 100vh;
+  position: fixed;
+}
+
+.sidebar--logo {
+  font-size: $base-font-size * 2;
+  font-weight: bold;
+  text-align: center;
+  height: $logo-height;
+  line-height: $logo-height;
+  margin-bottom: 0;
+  border-bottom: 1px solid $color-blue-4;
+
+  a {
+    color: $color-white;
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
+
+.sidebar--nav {
+  padding: $spacing-unit $spacing-unit ($spacing-unit + $logo-height); // Add a bit more padding at the bottom for consistency.
+  font-weight: bold;
+  max-height: 100%;
+  overflow-y: scroll;
+
+  li {
+    list-style: none;
+
+    a {
+      color: $color-white;
+
+      &:hover {
+        text-decoration: none;
+      }
+    }
+  }
+}
+
+.section {
+  margin: 0px;
+
+  > li {
+    margin-bottom: $spacing-unit / 2;
+
+    &:last-child {
+      margin-bottom: $spacing-unit;
+    }
+  }
+}
+
+.section__header {
+  font-weight: bold;
+  font-size: 1em;
+  text-decoration: none;
+  color: $color-white;
+  margin-bottom: $spacing-unit / 4;
+}
+
+.section__links {
+  margin-left: $spacing-unit / 2;
+  margin-bottom: $spacing-unit;
+  font-weight: normal;
+  font-size: 0.9em;
+}
+
+.section__link {
+  display: inline-block;
+  margin-top: $spacing-unit/4;
+  opacity: 0.75;
+  text-decoration: none;
+
+  &:hover {
+    opacity: 1;
+  }
+}
+
+.section__link--is-active {
+  font-weight: bold;
+  opacity: 1;
+}

_sass/partials/_colors.scss

@@ -0,0 +1,10 @@
+// I got the blues, man.
+// 1 --> 5, lightest --> darkest.
+
+$color-blue-1: #E8F8FF;
+$color-blue-2: #B4DCED;
+$color-blue-3: #91C9E8;
+$color-blue-4: #67B8DE;
+$color-blue-5: #3399CC;
+$color-white: #ffffff;
+$color-slate: #5E5E5E;

_sass/partials/_defaults.scss

@@ -0,0 +1,6 @@
+$base-font-family: 'Droid Sans', sans-serif;
+$base-font-size:   18px;
+$small-font-size:  $base-font-size * 0.875;
+$base-line-height: 1.5;
+$spacing-unit:     40px;
+

_sass/partials/_helpers.scss

@@ -0,0 +1,7 @@
+%clearfix {
+  &:after {
+    content: "";
+    display: table;
+    clear: both;
+   }
+}

_sass/vendors/_syntax-highlighting.scss

@@ -0,0 +1,67 @@
+/**
+ * Syntax highlighting styles
+ */
+.highlight {
+    background: #fff;
+    @extend %vertical-rhythm;
+
+    .c     { color: #998; font-style: italic } // Comment
+    .err   { color: #a61717; background-color: #e3d2d2 } // Error
+    .k     { font-weight: bold } // Keyword
+    .o     { font-weight: bold } // Operator
+    .cm    { color: #998; font-style: italic } // Comment.Multiline
+    .cp    { color: #999; font-weight: bold } // Comment.Preproc
+    .c1    { color: #998; font-style: italic } // Comment.Single
+    .cs    { color: #999; font-weight: bold; font-style: italic } // Comment.Special
+    .gd    { color: #000; background-color: #fdd } // Generic.Deleted
+    .gd .x { color: #000; background-color: #faa } // Generic.Deleted.Specific
+    .ge    { font-style: italic } // Generic.Emph
+    .gr    { color: #a00 } // Generic.Error
+    .gh    { color: #999 } // Generic.Heading
+    .gi    { color: #000; background-color: #dfd } // Generic.Inserted
+    .gi .x { color: #000; background-color: #afa } // Generic.Inserted.Specific
+    .go    { color: #888 } // Generic.Output
+    .gp    { color: #555 } // Generic.Prompt
+    .gs    { font-weight: bold } // Generic.Strong
+    .gu    { color: #aaa } // Generic.Subheading
+    .gt    { color: #a00 } // Generic.Traceback
+    .kc    { font-weight: bold } // Keyword.Constant
+    .kd    { font-weight: bold } // Keyword.Declaration
+    .kp    { font-weight: bold } // Keyword.Pseudo
+    .kr    { font-weight: bold } // Keyword.Reserved
+    .kt    { color: #458; font-weight: bold } // Keyword.Type
+    .m     { color: #099 } // Literal.Number
+    .s     { color: #d14 } // Literal.String
+    .na    { color: #008080 } // Name.Attribute
+    .nb    { color: #0086B3 } // Name.Builtin
+    .nc    { color: #458; font-weight: bold } // Name.Class
+    .no    { color: #008080 } // Name.Constant
+    .ni    { color: #800080 } // Name.Entity
+    .ne    { color: #900; font-weight: bold } // Name.Exception
+    .nf    { color: #900; font-weight: bold } // Name.Function
+    .nn    { color: #555 } // Name.Namespace
+    .nt    { color: #000080 } // Name.Tag
+    .nv    { color: #008080 } // Name.Variable
+    .ow    { font-weight: bold } // Operator.Word
+    .w     { color: #bbb } // Text.Whitespace
+    .mf    { color: #099 } // Literal.Number.Float
+    .mh    { color: #099 } // Literal.Number.Hex
+    .mi    { color: #099 } // Literal.Number.Integer
+    .mo    { color: #099 } // Literal.Number.Oct
+    .sb    { color: #d14 } // Literal.String.Backtick
+    .sc    { color: #d14 } // Literal.String.Char
+    .sd    { color: #d14 } // Literal.String.Doc
+    .s2    { color: #d14 } // Literal.String.Double
+    .se    { color: #d14 } // Literal.String.Escape
+    .sh    { color: #d14 } // Literal.String.Heredoc
+    .si    { color: #d14 } // Literal.String.Interpol
+    .sx    { color: #d14 } // Literal.String.Other
+    .sr    { color: #009926 } // Literal.String.Regex
+    .s1    { color: #d14 } // Literal.String.Single
+    .ss    { color: #990073 } // Literal.String.Symbol
+    .bp    { color: #999 } // Name.Builtin.Pseudo
+    .vc    { color: #008080 } // Name.Variable.Class
+    .vg    { color: #008080 } // Name.Variable.Global
+    .vi    { color: #008080 } // Name.Variable.Instance
+    .il    { color: #099 } // Literal.Number.Integer.Long
+}

basics/_handles.md

@@ -0,0 +1,48 @@
+---
+title: Handles
+---
+
+A handle is used to access the attributes of a Liquid object. By default, the handle is the object's title in lowercase with any spaces and special characters replaced by hyphens (-).
+
+For example, a page with the title "About Us" can be accessed in Liquid via its handle `about-us` as shown below:
+
+{% highlight liquid %}
+{% raw %}
+<!-- the content of the About Us page -->
+{{ pages.about-us.content }}
+{% endraw %}
+{% endhighlight %}
+
+## Creating handles
+
+An object with the title "Shirt" will automatically be given the handle `shirt`. If there is already an object with the handle `shirt`, the handle will auto-increment. In other words, "Shirt" objects created after the first one will receive the handle `shirt-1`, `shirt-2`, and so on.
+
+Whitespace in titles is replaced by hyphens in handles. For example, the title "My Shiny New Title" will be given the handle `my-shiny-new-title`.
+
+Handles also determine the URL of their corresponding objects. For example, a page with the handle `about-us` would have the url `/pages/about-us`.
+
+Websites often rely on static handles for pages, posts, or objects. To preserve design elements and avoid broken links, if you modify the title of an object, **its handle is not automatically updated**. For example, if you were to change a page title from "About Us" to "About This Website", its handle would still be `about-us`.
+
+You can change an object's handle manually (TK how to change a handle manually)
+
+## Accessing handle attributes
+
+In many cases you may know the handle of a object whose attributes you want to access. You can access its attributes by pluralizing the name of the object, then using either the square bracket ( [ ] ) or dot ( . ) notation.
+
+<div class="code-block code-block--input">
+{% highlight liquid %}
+{% raw %}
+{{ pages.about-us.title }}
+{{ pages["about-us"].title }}
+{% endraw %}
+{% endhighlight %}
+</div>
+
+<div class="code-block code-block--output">
+{% highlight text %}
+About Us
+About Us
+{% endhighlight %}
+</div>
+
+In the example above, notice that we are using `pages` as opposed to `page`.

basics/index.html

@@ -0,0 +1,4 @@
+---
+layout: default
+---
+

basics/introduction.md

@@ -0,0 +1,64 @@
+---
+title: Introduction
+---
+
+Liquid code can be categorized into [**objects**](#objects), [**tags**](#tags), and [**filters**](#filters).
+
+## Objects
+
+**Objects** tell Liquid where to show content on a page. Objects and variable names are denoted by double curly braces: `{% raw %}{{{% endraw %}` and `{% raw %}}}{% endraw %}`.
+
+
+```liquid
+{% raw %}
+{{ page.title }}
+{% endraw %}
+```
+
+```text
+Introduction
+```
+
+In this case, Liquid is rendering the content of an object called `page.title`, and that object contains the text `Introduction`.
+
+## Tags
+
+**Tags** create the logic and control flow for templates. They are denoted by curly braces and percent signs: `{% raw %}{%{% endraw %}` and `{% raw %}%}{% endraw %}`.
+
+The markup used in tags does not produce any visible text. This means that you can assign variables and create conditions and loops without showing any of the Liquid logic on the page.
+
+```liquid
+{% raw %}
+{% if user %}
+  Hello {{ user.name }}!
+{% endif %}
+
+{% endraw %}
+```
+
+```text
+Hello Adam!
+```
+
+Tags can be categorized into three types:
+
+- [Control flow](/tags/control-flow)
+- [Iteration](/tags/iteration)
+- [Variable assignments](/tags/variable)
+
+You can read more about each type of tag in their respective sections.
+
+
+## Filters
+
+**Filters** change the output of a Liquid object. They are using within an output and are separated by a `|`.
+
+```liquid
+{% raw %}
+{{ "/my/fancy/url" | append: ".html" }}
+{% endraw %}
+```
+
+```text
+{{ "/my/fancy/url" | append: ".html" }}
+```

basics/operators.md

@@ -0,0 +1,88 @@
+---
+title: Operators
+---
+
+Liquid includes many logical and comparison operators.
+
+## Basic operators
+
+<table>
+  <tbody>
+    <tr>
+      <td><code>==</code></td>
+      <td>equals</td>
+    </tr>
+    <tr>
+      <td><code>!=</code></td>
+      <td>does not equal</td>
+    </tr>
+    <tr>
+      <td><code>&gt;</code></td>
+      <td>greater than</td>
+    </tr>
+    <tr>
+      <td><code>&lt;</code></td>
+      <td>less than</td>
+    </tr>
+    <tr>
+      <td><code>&gt;=</code></td>
+      <td>greater than or equal to</td>
+    </tr>
+    <tr>
+      <td><code>&lt;=</code></td>
+      <td>less than or equal to</td>
+    </tr>
+    <tr>
+      <td><code>or</code></td>
+      <td>logical or</td>
+    </tr>
+    <tr>
+      <td><code>and</code></td>
+      <td>logical and</td>
+    </tr>
+  </tbody>
+</table>
+
+For example:
+
+```liquid
+{% raw %}
+{% if product.title == "Awesome Shoes" %}
+  These shoes are awesome!
+{% endif %}
+{% endraw %}
+```
+
+You can use multiple operators in a tag:
+
+```liquid
+{% raw %}
+{% if product.type == "Shirt" or product.type == "Shoes" %}
+  This is a shirt or a pair of shoes.
+{% endif %}
+{% endraw %}
+```
+
+## contains
+
+`contains` checks for the presence of a substring inside a string.
+
+```liquid
+{% raw %}
+{% if product.title contains 'Pack' %}
+  This product's title contains the word Pack.
+{% endif %}
+{% endraw %}
+```
+
+`contains` can also check for the presence of a string in an array of strings.
+
+```liquid
+{% raw %}
+{% if product.tags contains 'Hello' %}
+  This product has been tagged with 'Hello'.
+{% endif %}
+{% endraw %}
+```
+
+`contains` can only search strings. You cannot use it to check for an object in an array of objects.

basics/truthy-and-falsy.md

@@ -0,0 +1,76 @@
+---
+title: Truthy and falsy
+---
+
+In programming, anything that returns `true` in a conditional is called **truthy**. Anything that returns `false` in a conditional is called **falsy**. All object types can be described as either truthy or falsy.
+
+- [Truthy](#truthy)
+- [Falsy](#falsy)
+- [Summary](#summary)
+
+## Truthy
+
+All values in Liquid are truthy except `nil` and `false`.
+
+In the example below, the string "Tobi" is not a boolean, but it is truthy in a conditional:
+
+```liquid
+{% raw %}
+{% assign tobi = "Tobi" %}
+
+{% if tobi == true %}
+  This condition will always be true.
+{% endif %}
+{% endraw %}
+```
+
+[Strings](/basics/types/#string), even when empty, are truthy. The example below will result in empty HTML tags if `settings.fp_heading` is empty:
+
+```liquid
+{% raw %}
+{% if settings.fp_heading %}
+  <h1>{{ settings.fp_heading }}</h1>
+{% endif %}
+{% endraw %}
+```
+
+```html
+<h1></h1>
+```
+
+[EmptyDrops](/basics/types/#emptydrop) are also truthy. In the example below, if `settings.page` is an empty string or set to a hidden or deleted object, you will end up with an EmptyDrop. The result is an empty `div`:
+
+```liquid
+{% raw %}
+{% if pages[settings.page] %}
+  <div>{{ pages[settings.page].content }}</div>
+{% endif %}
+{% endraw %}
+```
+
+```html
+<div></div>
+```
+
+## Falsy
+
+The falsy values in Liquid are [`nil`](/basics/types/#nil) and [`false`](/basics/types/#boolean).
+
+## Summary
+
+The table below summarizes what is truthy or falsy in Liquid.
+
+|               | truthy        | falsy         |
+| ------------- |:-------------:|:-------------:|
+| true          | •             |               |
+| false         |               | •             |
+| nil           |               | •             |
+| string        | •             |               |
+| empty string  | •             |               |
+| 0             | •             |               |
+| integer       | •             |               |
+| float         | •             |               |
+| array         | •             |               |
+| empty array   | •             |               |
+| page          | •             |               |
+| EmptyDrop     | •             |               |

basics/types.md

@@ -0,0 +1,160 @@
+---
+title: Types
+---
+
+Liquid objects can have one of six types:
+
+- [String](#string)
+- [Number](#number)
+- [Boolean](#boolean)
+- [Nil](#nil)
+- [Array](#array)
+- [EmptyDrop](#emptydrop)
+
+You can initialize Liquid variables with the [assign](/tags/#assign) or [capture](/tags/#capture) tags.
+
+## String
+
+Declare a string by wrapping a variable's value in single or double quotes:
+
+```liquid
+{% raw %}
+{% assign my_string = "Hello World!" %}
+{% endraw %}
+```
+
+## Number
+
+Numbers include floats and integers:
+
+```liquid
+{% raw %}
+{% assign my_int = 25 %}
+{% assign my_float = 39.756 %}
+{% endraw %}
+```
+
+## Boolean
+
+Booleans are either `true` or `false`. No quotations are necessary when declaring a boolean:
+
+```liquid
+{% raw %}
+{% assign foo = true %}
+{% assign bar = false %}
+{% endraw %}
+```
+
+## Nil
+
+Nil is a special empty value that is returned when Liquid code has no results. It is **not** a string with the characters "nil".
+
+Nil is [treated as false](/basics/truthy-and-falsy) in the conditions of `if` blocks and other Liquid tags that check the truthfulness of a statement.
+
+In the following example, if the user does not exist (that is, `user` returns `nil`), Liquid will not print the greeting:
+
+```liquid
+{% raw %}
+{% if user %}
+  Hello {{ user.name }}!
+{% endif %}
+{% endraw %}
+```
+
+Tags or outputs that return `nil` will not print anything to the page.
+
+```liquid
+{% raw %}
+The current user is {{ user.name }}
+{% endraw %}
+```
+
+```text
+The current user is
+```
+
+## Array
+
+Arrays hold lists of variables of any type.
+
+### Accessing items in arrays
+
+To access all the items in an array, you can loop through each item in the array using an [iteration tag](/tags/iteration/).
+
+```liquid
+{% raw %}
+<!-- if site.users = "Tobi", "Laura", "Tetsuro", "Adam" -->
+{% for user in site.users %}
+  {{ user }}
+{% endfor %}
+{% endraw %}
+```
+
+```text
+{% raw %}
+Tobi Laura Tetsuro Adam
+{% endraw %}
+```
+
+### Accessing specific items in arrays
+
+You can use square bracket `[` `]` notation to access a specific item in an array. Array indexing starts at zero.
+
+```liquid
+{% raw %}
+<!-- if site.users = "Tobi", "Laura", "Tetsuro", "Adam" -->
+{{ site.users[0] }}
+{{ site.users[1] }}
+{{ site.users[3] }}
+{% endraw %}
+```
+
+```text
+Tobi
+Laura
+Adam
+```
+
+### Initializing arrays
+
+You cannot initialize arrays using only Liquid.
+
+You can, however, use the [split](/filters/split) filter to break a string into an array of substrings.
+
+## EmptyDrop
+
+An EmptyDrop object is returned if you try to access a deleted object by name. In the example below, `page_1`, `page_2` and `page_3` are all EmptyDrop objects.
+
+```liquid
+{% raw %}
+{% assign variable = "hello" %}
+{% assign page_1 = pages[variable] %}
+{% assign page_2 = pages["does-not-exist"] %}
+{% assign page_3 = pages.this-handle-does-not-exist %}
+{% endraw %}
+```
+
+EmptyDrop objects only have one attribute, `empty?`, which is always *true*.
+
+Collections and pages that *do* exist do not have an `empty?` attribute. Their `empty?` is "falsy", which means that calling it inside an if statement will return *false*. When using an `unless` statement on existing collections and pages, `empty?` will return `true`.
+
+### Checking for emptiness
+
+Using the `empty?` attribute, you can check to see if an object exists or not before you access any of its attributes.
+
+```liquid
+{% raw %}
+{% unless pages.about.empty? %}
+  <!-- This will only print if the page with handle 'about' is not empty -->
+  <h1>{{ pages.frontpage.title }}</h1>
+  <div>{{ pages.frontpage.content }}</div>
+{% endunless %}
+{% endraw %}
+```
+
+If you don't check for emptiness first, Liquid might print empty HTML elements to the page:
+
+```html
+<h1></h1>
+<div></div>
+```

example/server/example_servlet.rb

@@ -1,50 +0,0 @@
-# frozen_string_literal: true
-
-module ProductsFilter
-  def price(integer)
-    format("$%.2d USD", integer / 100.0)
-  end
-
-  def prettyprint(text)
-    text.gsub(/\*(.*)\*/, '<b>\1</b>')
-  end
-
-  def count(array)
-    array.size
-  end
-
-  def paragraph(p)
-    "<p>#{p}</p>"
-  end
-end
-
-class Servlet < LiquidServlet
-  def index
-    { 'date' => Time.now }
-  end
-
-  def products
-    { 'products' => products_list, 'more_products' => more_products_list, 'description' => description, 'section' => 'Snowboards', 'cool_products' => true }
-  end
-
-  private
-
-  def products_list
-    [
-      { 'name' => 'Arbor Draft', 'price' => 39900, 'description' => 'the *arbor draft* is a excellent product' },
-      { 'name' => 'Arbor Element', 'price' => 40000, 'description' => 'the *arbor element* rocks for freestyling' },
-      { 'name' => 'Arbor Diamond', 'price' => 59900, 'description' => 'the *arbor diamond* is a made up product because im obsessed with arbor and have no creativity' }
-    ]
-  end
-
-  def more_products_list
-    [
-      { 'name' => 'Arbor Catalyst', 'price' => 39900, 'description' => 'the *arbor catalyst* is an advanced drop-through for freestyle and flatground performance and versatility' },
-      { 'name' => 'Arbor Fish', 'price' => 40000, 'description' => 'the *arbor fish* is a compact pin that features an extended wheelbase and time-honored teardrop shape' }
-    ]
-  end
-
-  def description
-    "List of Products ~ This is a list of products with price and description."
-  end
-end

example/server/liquid_servlet.rb

@@ -1,30 +0,0 @@
-# frozen_string_literal: true
-
-class LiquidServlet < WEBrick::HTTPServlet::AbstractServlet
-  def do_GET(req, res)
-    handle(:get, req, res)
-  end
-
-  def do_POST(req, res)
-    handle(:post, req, res)
-  end
-
-  private
-
-  def handle(_type, req, res)
-    @request  = req
-    @response = res
-
-    @request.path_info =~ /(\w+)\z/
-    @action  = Regexp.last_match(1) || 'index'
-    @assigns = send(@action) if respond_to?(@action)
-
-    @response['Content-Type'] = "text/html"
-    @response.status = 200
-    @response.body   = Liquid::Template.parse(read_template).render(@assigns, filters: [ProductsFilter])
-  end
-
-  def read_template(filename = @action)
-    File.read("#{__dir__}/templates/#{filename}.liquid")
-  end
-end

example/server/server.rb

@@ -1,14 +0,0 @@
-# frozen_string_literal: true
-
-require 'webrick'
-require 'rexml/document'
-
-require_relative '../../lib/liquid'
-require_relative 'liquid_servlet'
-require_relative 'example_servlet'
-
-# Setup webrick
-server = WEBrick::HTTPServer.new(Port: ARGV[1] || 3000)
-server.mount('/', Servlet)
-trap("INT") { server.shutdown }
-server.start

example/server/templates/index.liquid

@@ -1,6 +0,0 @@
-<p>Hello world!</p>
-
-<p>It is {{date}}</p>
-
-
-<p>Check out the <a href="/products">Products</a> screen </p>

example/server/templates/products.liquid

@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
-  <head>
-    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
-    <meta http-equiv="Content-Language" content="en-us" />
-
-    <title>products</title>
-
-    <meta name="ROBOTS" content="ALL" />
-    <meta http-equiv="imagetoolbar" content="no" />
-    <meta name="MSSmartTagsPreventParsing" content="true" />
-    <meta name="Copyright" content="(c) 2005 Copyright content:  Copyright design: Tobias Luetke" />
-    <!-- (c) Copyright 2005 by Tobias Luetke All Rights Reserved. -->
-  </head>
-
-  <body>
-    {% assign all_products = products | concat: more_products  %}
-    <h1>{{ description | split: '~' | first }}</h1>
-
-    <h2>{{ description | split: '~' | last }}</h2>
-
-    <h2>There are currently {{all_products | count}} products in the {{section}} catalog</h2>
-
-    {% if cool_products %}
-      Cool products :)
-    {% else %}
-      Uncool products :(
-    {% endif %}
-
-    <ul id="products">
-
-      {% for product in all_products %}
-        <li>
-          <h2>{{product.name}}</h2>
-          Only {{product.price | price }}
-
-          {{product.description | prettyprint | paragraph }}
-
-          {{ 'it rocks!' | paragraph }}
-
-        </li>
-      {% endfor %}
-
-    </ul>
-
-  </body>
-</html>

feed.xml

@@ -0,0 +1,30 @@
+---
+layout: null
+---
+<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>{{ site.title | xml_escape }}</title>
+    <description>{{ site.description | xml_escape }}</description>
+    <link>{{ site.url }}{{ site.baseurl }}/</link>
+    <atom:link href="{{ "/feed.xml" | prepend: site.baseurl | prepend: site.url }}" rel="self" type="application/rss+xml"/>
+    <pubDate>{{ site.time | date_to_rfc822 }}</pubDate>
+    <lastBuildDate>{{ site.time | date_to_rfc822 }}</lastBuildDate>
+    <generator>Jekyll v{{ jekyll.version }}</generator>
+    {% for post in site.posts limit:10 %}
+      <item>
+        <title>{{ post.title | xml_escape }}</title>
+        <description>{{ post.content | xml_escape }}</description>
+        <pubDate>{{ post.date | date_to_rfc822 }}</pubDate>
+        <link>{{ post.url | prepend: site.baseurl | prepend: site.url }}</link>
+        <guid isPermaLink="true">{{ post.url | prepend: site.baseurl | prepend: site.url }}</guid>
+        {% for tag in post.tags %}
+        <category>{{ tag | xml_escape }}</category>
+        {% endfor %}
+        {% for cat in post.categories %}
+        <category>{{ cat | xml_escape }}</category>
+        {% endfor %}
+      </item>
+    {% endfor %}
+  </channel>
+</rss>

filters/append.md

@@ -0,0 +1,29 @@
+---
+title: append
+---
+
+Concatenates two strings and returns the concatenated value.
+
+```liquid
+{% raw %}
+{{ "/my/fancy/url" | append: ".html" }}
+{% endraw %}
+```
+
+```text
+{{ "/my/fancy/url" | append: ".html" }}
+```
+
+`append` can also be used with variables:
+
+```liquid
+{% raw %}
+{% assign filename = "/index.html" %}
+{{ "website.com" | append: filename }}
+{% endraw %}
+```
+
+```text
+{% assign filename = "/index.html" %}
+{{ "website.com" | append: filename }}
+```

filters/capitalize.md

@@ -0,0 +1,27 @@
+---
+title: capitalize
+---
+
+Makes the first character of a string capitalized.
+
+```liquid
+{% raw %}
+{{ "title" | capitalize }}
+{% endraw %}
+```
+
+```text
+Title
+```
+
+`capitalize` only capitalizes the first character of the string, so later words are not affected:
+
+ ```liquid
+{% raw %}
+{{ "my great title" | capitalize }}
+{% endraw %}
+```
+
+```text
+My great title
+```

filters/ceil.md

@@ -0,0 +1,47 @@
+---
+title: ceil
+---
+
+Rounds the input up to the nearest whole number. Liquid tries to convert the input to a number before the filter is applied.
+
+```liquid
+{% raw %}
+{{ 1.2 | ceil }}
+{% endraw %}
+```
+
+```text
+{{ 1.2 | ceil }}
+```
+
+```liquid
+{% raw %}
+{{ 2.0 | ceil }}
+{% endraw %}
+```
+
+```text
+{{ 2.0 | ceil }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | ceil }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | ceil }}
+```
+
+Here the input value is a string:
+
+```liquid
+{% raw %}
+{{ "3.5" | ceil }}
+{% endraw %}
+```
+
+```text
+{{ "3.5" | ceil }}
+```

filters/date.md

@@ -0,0 +1,37 @@
+---
+title: date
+---
+
+Converts a timestamp into another date format. The format for this syntax is the same as [`strftime`](//strftime.net).
+
+```liquid
+{% raw %}
+{{ article.published_at | date: "%a, %b %d, %y" }}
+{% endraw %}
+```
+
+```text
+Fri, Jul 17, 15
+```
+
+```liquid
+{% raw %}
+{{ article.published_at | date: "%Y" }}
+{% endraw %}
+```
+
+```text
+2015
+```
+
+`date` works on strings if they contain well-formatted dates:
+
+```liquid
+{% raw %}
+{{ "March 14, 2016" | date: "%b %d, %y" }}
+{% endraw %}
+```
+
+```text
+{{ "March 14, 2016" | date: "%b %d, %y" }}
+```

filters/default.md

@@ -0,0 +1,44 @@
+---
+title: default
+---
+
+Allows you to specify a fallback in case a value doesn't exist. `default` will show its value if the left side is `nil`, `false`, or empty.
+
+In this example, `product_price` is not defined, so the default value is used.
+
+```liquid
+{% raw %}
+{{ product_price | default: 2.99 }}
+{% endraw %}
+```
+
+```text
+2.99
+```
+
+In this example, `product_price` is defined, so the default value is not used.
+
+```liquid
+{% raw %}
+{% assign product_price = 4.99 %}
+{{ product_price | default: 2.99 }}
+{% endraw %}
+```
+
+```text
+4.99
+```
+
+In this example, `product_price` is empty, so the default value is used.
+
+```liquid
+{% raw %}
+{% assign product_price = "" %}
+{{ product_price | default: 2.99 }}
+{% endraw %}
+```
+
+```text
+2.99
+```
+

filters/divided_by.md

@@ -0,0 +1,37 @@
+---
+title: divided_by
+---
+
+Divides a number by the specified number.
+
+The result is rounded down to the nearest integer (that is, the [floor](/filters/floor)).
+
+```liquid
+{% raw %}
+{{ 4 | divided_by: 2 }}
+{% endraw %}
+```
+
+```text
+{{ 4 | divided_by: 2 }}
+```
+
+```liquid
+{% raw %}
+{{ 16 | divided_by: 4 }}
+{% endraw %}
+```
+
+```text
+{{ 16 | divided_by: 4 }}
+```
+
+```liquid
+{% raw %}
+{{ 5 | divided_by: 3 }}
+{% endraw %}
+```
+
+```text
+{{ 5 | divided_by: 3 }}
+```

filters/downcase.md

@@ -0,0 +1,25 @@
+---
+title: downcase
+---
+
+Makes each character in a string lowercase. It has no effect on strings which are already all lowercase.
+
+```liquid
+{% raw %}
+{{ "Parker Moore" | downcase }}
+{% endraw %}
+```
+
+```text
+{{ "Parker Moore" | downcase }}
+```
+
+```liquid
+{% raw %}
+{{ "apple" | downcase }}
+{% endraw %}
+```
+
+```text
+{{ "apple" | downcase }}
+```

filters/escape.md

@@ -0,0 +1,25 @@
+---
+title: escape
+---
+
+Escapes a string by replacing characters with escape sequences (so that the string can be used in a URL, for example). It doesn't change strings that don't have anything to escape.
+
+```liquid
+{% raw %}
+{{ "Have you read 'James & the Giant Peach'?" | escape }}
+{% endraw %}
+```
+
+```text
+{{ "Have you read 'James & the Giant Peach'?" | escape }}
+```
+
+```liquid
+{% raw %}
+{{ "Tetsuro Takara" | escape }}
+{% endraw %}
+```
+
+```text
+{{ "Tetsuro Takara" | escape }}
+```

filters/escape_once.md

@@ -0,0 +1,25 @@
+---
+title: escape_once
+---
+
+Escapes a string without changing existing escaped entities. It doesn't change strings that don't have anything to escape.
+
+```liquid
+{% raw %}
+{{ "1 < 2 & 3" | escape_once }}
+{% endraw %}
+```
+
+```text
+{{ "1 < 2 & 3" | escape_once }}
+```
+
+```liquid
+{% raw %}
+{{ "1 &lt; 2 &amp; 3" | escape_once }}
+{% endraw %}
+```
+
+```text
+{{ "1 &lt; 2 &amp; 3" | escape_once }}
+```

filters/first.md

@@ -0,0 +1,33 @@
+---
+title: first
+---
+
+Returns the first item of an array.
+
+```liquid
+{% raw %}
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array.first }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array.first }}
+```
+
+```liquid
+{% raw %}
+{% assign my_array = "zebra, octopus, giraffe, tiger" | split: ", " %}
+
+{{ my_array.first }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "zebra, octopus, giraffe, tiger" | split: ", " %}
+
+{{ my_array.first }}
+```

filters/floor.md

@@ -0,0 +1,47 @@
+---
+title: floor
+---
+
+Rounds a number down to the nearest whole number. Liquid tries to convert the input to a number before the filter is applied.
+
+```liquid
+{% raw %}
+{{ 1.2 | floor }}
+{% endraw %}
+```
+
+```text
+{{ 1.2 | floor }}
+```
+
+```liquid
+{% raw %}
+{{ 2.0 | floor }}
+{% endraw %}
+```
+
+```text
+{{ 2.0 | floor }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | floor }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | floor }}
+```
+
+Here the input value is a string:
+
+```liquid
+{% raw %}
+{{ "3.5" | floor }}
+{% endraw %}
+```
+
+```text
+{{ "3.5" | floor }}
+```

filters/index.html

@@ -0,0 +1,10 @@
+---
+layout: default
+---
+
+{% for doc in site.collections["filters"].docs %}
+  <h2 id="{{ doc.title | slugify }}">{{ doc.title }}</h2>
+  <div class="content">
+    {{ doc.content }}
+  </div>
+{% endfor %}

filters/join.md

@@ -0,0 +1,19 @@
+---
+title: join
+---
+
+Combines the items in an array into a single string using the argument as a separator.
+
+```liquid
+{% raw %}
+{% assign beatles = "John, Paul, George, Ringo" | split: ", " %}
+
+{{ beatles | join: " and " }}
+{% endraw %}
+```
+
+```text
+{% assign beatles = "John, Paul, George, Ringo" | split: ", " %}
+
+{{ beatles | join: " and " }}
+```

filters/last.md

@@ -0,0 +1,33 @@
+---
+title: last
+---
+
+Returns the last item of an array.
+
+```liquid
+{% raw %}
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array.last }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array.last }}
+```
+
+```liquid
+{% raw %}
+{% assign my_array = "zebra, octopus, giraffe, tiger" | split: ", " %}
+
+{{ my_array.last }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "zebra, octopus, giraffe, tiger" | split: ", " %}
+
+{{ my_array.last }}
+```

filters/lstrip.md

@@ -0,0 +1,15 @@
+---
+title: lstrip
+---
+
+Removes all whitespaces (tabs, spaces, and newlines) from the beginning of a string. The filter does not affect spaces between words.
+
+```liquid
+{% raw %}
+{{ "          So much room for activities!          " | lstrip }}
+{% endraw %}
+```
+
+```text
+{{ "          So much room for activities!          " | lstrip }}
+```

filters/map.md

@@ -0,0 +1,25 @@
+---
+title: map
+---
+
+Creates an array of values by extracting the values of a named property from another object.
+
+In this example, assume the object `site.pages` contains all the metadata for a website. Using `assign` with the `map` filter creates a variable that contains only the values of the `category` properties of everything in the `site.pages` object.
+
+```liquid
+{% raw %}
+{% assign all_categories = site.pages | map: "category" %}
+
+{% for item in all_categories %}
+{{ item }}
+{% endfor %}
+{% endraw %}
+```
+
+```text
+business
+celebrities
+lifestyle
+sports
+technology
+```

filters/minus.md

@@ -0,0 +1,35 @@
+---
+title: minus
+---
+
+Subtracts a number from another number.
+
+```liquid
+{% raw %}
+{{ 4 | minus: 2 }}
+{% endraw %}
+```
+
+```text
+{{ 4 | minus: 2 }}
+```
+
+```liquid
+{% raw %}
+{{ 16 | minus: 4 }}
+{% endraw %}
+```
+
+```text
+{{ 16 | minus: 4 }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | minus: 12 }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | minus: 12 }}
+```

filters/modulo.md

@@ -0,0 +1,35 @@
+---
+title: modulo
+---
+
+Returns the remainder of a division operation.
+
+```liquid
+{% raw %}
+{{ 3 | modulo: 2 }}
+{% endraw %}
+```
+
+```text
+{{ 3 | modulo: 2 }}
+```
+
+```liquid
+{% raw %}
+{{ 24 | modulo: 7 }}
+{% endraw %}
+```
+
+```text
+{{ 24 | modulo: 7 }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | modulo: 12 }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | modulo: 12 }}
+```

filters/newline_to_br.md

@@ -0,0 +1,25 @@
+---
+title: newline_to_br
+---
+
+Replaces every newline (`\n`) with an HTML line break (`<br>`).
+
+```liquid
+{% raw %}
+{% capture string_with_newlines %}
+Hello
+there
+{% endcapture %}
+
+{{ string_with_newlines | newline_to_br }}
+{% endraw %}
+```
+
+```html
+{% capture string_with_newlines %}
+Hello
+there
+{% endcapture %}
+
+{{ string_with_newlines | newline_to_br }}
+```

filters/plus.md

@@ -0,0 +1,35 @@
+---
+title: plus
+---
+
+Adds a number to another number.
+
+```liquid
+{% raw %}
+{{ 4 | plus: 2 }}
+{% endraw %}
+```
+
+```text
+{{ 4 | plus: 2 }}
+```
+
+```liquid
+{% raw %}
+{{ 16 | plus: 4 }}
+{% endraw %}
+```
+
+```text
+{{ 16 | plus: 4 }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | plus: 12 }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | plus: 12 }}
+```

filters/prepend.md

@@ -0,0 +1,31 @@
+---
+title: prepend
+---
+
+Adds the specified string to the beginning of another string.
+
+```liquid
+{% raw %}
+{{ "apples, oranges, and bananas" | prepend: "Some fruit: " }}
+{% endraw %}
+```
+
+```text
+{{ "apples, oranges, and bananas" | prepend: "Some fruit: " }}
+```
+
+You can also `prepend` variables:
+
+```liquid
+{% raw %}
+{% assign url = "liquidmarkup.com" %}
+
+{{ "/index.html" | prepend: url }}
+{% endraw %}
+```
+
+```text
+{% assign url = "liquidmarkup.com" %}
+
+{{ "/index.html" | prepend: url }}
+```

filters/remove.md

@@ -0,0 +1,15 @@
+---
+title: remove
+---
+
+Removes every occurrence of the specified substring from a string.
+
+```liquid
+{% raw %}
+{{ "I strained to see the train through the rain" | remove: "rain" }}
+{% endraw %}
+```
+
+```text
+{{ "I strained to see the train through the rain" | remove: "rain" }}
+```

filters/remove_first.md

@@ -0,0 +1,15 @@
+---
+title: remove_first
+---
+
+Removes only the first occurrence of the specified substring from a string.
+
+```liquid
+{% raw %}
+{{ "I strained to see the train through the rain" | remove_first: "rain" }}
+{% endraw %}
+```
+
+```text
+{{ "I strained to see the train through the rain" | remove_first: "rain" }}
+```

filters/replace.md

@@ -0,0 +1,15 @@
+---
+title: replace
+---
+
+Replaces every occurrence of an argument in a string with the second argument.
+
+```liquid
+{% raw %}
+{{ "Take my protein pills and put my helmet on" | replace: "my", "your" }}
+{% endraw %}
+```
+
+```text
+{{ "Take my protein pills and put my helmet on" | replace: "my", "your" }}
+```

filters/replace_first.md

@@ -0,0 +1,17 @@
+---
+title: replace_first
+---
+
+Replaces only the first occurrence of the first argument in a string with the second argument.
+
+```liquid
+{% raw %}
+{% assign my_string = "Take my protein pills and put my helmet on" %}
+{{ my_string | replace_first: "my", "your" }}
+{% endraw %}
+```
+
+```text
+{% assign my_string = "Take my protein pills and put my helmet on" %}
+{{ my_string | replace_first: "my", "your" }}
+```

filters/reverse.md

@@ -0,0 +1,31 @@
+---
+title: reverse
+---
+
+Reverses the order of the items in an array. `reverse` cannot reverse a string.
+
+```liquid
+{% raw %}
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array | reverse | join: ", " }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array | reverse | join: ", " }}
+```
+
+`reverse` cannot be used directly on a string, but you can split a string into an array, reverse the array, and rejoin it by chaining together filters:
+
+```liquid
+{% raw %}
+{{ "Ground control to Major Tom." | split: "" | reverse | join: "" }}
+{% endraw %}
+```
+
+```text
+{{ "Ground control to Major Tom." | split: "" | reverse | join: "" }}
+```

filters/round.md

@@ -0,0 +1,35 @@
+---
+title: round
+---
+
+Rounds an input number to the nearest integer or, if a number is specified as an argument, to that number of decimal places.
+
+```liquid
+{% raw %}
+{{ 1.2 | round }}
+{% endraw %}
+```
+
+```text
+{{ 1.2 | round }}
+```
+
+```liquid
+{% raw %}
+{{ 2.7 | round }}
+{% endraw %}
+```
+
+```text
+{{ 2.7 | round }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | round: 2 }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | round: 2 }}
+```

filters/rstrip.md

@@ -0,0 +1,15 @@
+---
+title: rstrip
+---
+
+Removes all whitespace (tabs, spaces, and newlines) from the right side of a string.
+
+```liquid
+{% raw %}
+{{ "          So much room for activities!          " | rstrip }}
+{% endraw %}
+```
+
+```text
+{{ "          So much room for activities!          " | rstrip }}
+```

filters/size.md

@@ -0,0 +1,39 @@
+---
+title: size
+---
+
+Returns the number of characters in a string or the number of items in an array. `size` can also be used with dot notation (for example, `{% raw %}{{ my_string.size }}{% endraw %}`). This allows you to use `size` inside  tags such as conditionals.
+
+```liquid
+{% raw %}
+{{ "Ground control to Major Tom." | size }}
+{% endraw %}
+```
+
+```text
+{{ "Ground control to Major Tom." | size }}
+```
+
+```liquid
+{% raw %}
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array | size }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "apples, oranges, peaches, plums" | split: ", " %}
+
+{{ my_array | size }}
+```
+
+Using dot notation:
+
+```liquid
+{% raw %}
+{% if site.pages.size > 10 %}
+  This is a big website!
+{% endif %}
+{% endraw %}
+```

filters/slice.md

@@ -0,0 +1,49 @@
+---
+title: slice
+---
+
+Returns a substring of 1 character beginning at the index specified by the argument passed in. An optional second argument specifies the length of the substring to be returned.
+
+String indices are numbered starting from 0.
+
+```liquid
+{% raw %}
+{{ "Liquid" | slice: 0 }}
+{% endraw %}
+```
+
+```text
+{{ "Liquid" | slice: 0 }}
+```
+
+```liquid
+{% raw %}
+{{ "Liquid" | slice: 2 }}
+{% endraw %}
+```
+
+```text
+{{ "Liquid" | slice: 2 }}
+```
+
+```liquid
+{% raw %}
+{{ "Liquid" | slice: 2, 5 }}
+{% endraw %}
+```
+
+```text
+{{ "Liquid" | slice: 2, 5 }}
+```
+
+If the first parameter is a negative number, the indices are counted from the end of the string:
+
+```liquid
+{% raw %}
+{{ "Liquid" | slice: -3, 2 }}
+{% endraw %}
+```
+
+```text
+{{ "Liquid" | slice: -3, 2 }}
+```

filters/sort.md

@@ -0,0 +1,19 @@
+---
+title: sort
+---
+
+Sorts items in an array by a property of an item in the array. The order of the sorted array is case-sensitive.
+
+```liquid
+{% raw %}
+{% assign my_array = "zebra, octopus, giraffe, Sally Snake" | split: ", " %}
+
+{{ my_array | sort | join: ", " }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "zebra, octopus, giraffe, Sally Snake" | split: ", " %}
+
+{{ my_array | sort | join: ", " }}
+```

filters/split.md

@@ -0,0 +1,23 @@
+---
+title: split
+---
+
+Divides an input string into an array using the argument as a separator. `split` is commonly used to convert comma-separated items from a string to an array.
+
+```liquid
+{% raw %}
+{% assign beatles = "John, Paul, George, Ringo" | split: ", " %}
+
+{% for member in beatles %}
+  {{ member }}
+{% endfor %}
+{% endraw %}
+```
+
+```text
+{% assign beatles = "John, Paul, George, Ringo" | split: ", " %}
+
+{% for member in beatles %}
+  {{ member }}
+{% endfor %}
+```

filters/strip.md

@@ -0,0 +1,15 @@
+---
+title: strip
+---
+
+Removes all whitespace (tabs, spaces, and newlines) from both the left and right side of a string. It does not affect spaces between words.
+
+```liquid
+{% raw %}
+{{ "          So much room for activities!          " | strip }}
+{% endraw %}
+```
+
+```text
+{{ "          So much room for activities!          " | strip }}
+```

filters/strip_html.md

@@ -0,0 +1,15 @@
+---
+title: strip_html
+---
+
+Removes any HTML tags from a string.
+
+```liquid
+{% raw %}
+{{ "Have <em>you</em> read <strong>Ulysses</strong>?" | strip_html }}
+{% endraw %}
+```
+
+```text
+{{ "Have <em>you</em> read <strong>Ulysses</strong>?" | strip_html }}
+```

filters/strip_newlines.md

@@ -0,0 +1,26 @@
+---
+title: strip_newlines
+---
+
+Removes any newline characters (line breaks) from a string.
+
+```liquid
+{% raw %}
+{% capture string_with_newlines %}
+Hello
+there
+{% endcapture %}
+
+{{ string_with_newlines | strip_newlines }}
+{% endraw %}
+```
+
+```html
+{% capture string_with_newlines %}
+Hello
+there
+{% endcapture %}
+
+{{ string_with_newlines | strip_newlines }}
+```
+

filters/times.md

@@ -0,0 +1,35 @@
+---
+title: times
+---
+
+Multiplies a number by another number.
+
+```liquid
+{% raw %}
+{{ 3 | times: 2 }}
+{% endraw %}
+```
+
+```text
+{{ 3 | times: 2 }}
+```
+
+```liquid
+{% raw %}
+{{ 24 | times: 7 }}
+{% endraw %}
+```
+
+```text
+{{ 24 | times: 7 }}
+```
+
+```liquid
+{% raw %}
+{{ 183.357 | times: 12 }}
+{% endraw %}
+```
+
+```text
+{{ 183.357 | times: 12 }}
+```

filters/truncate.md

@@ -0,0 +1,15 @@
+---
+title: truncate
+---
+
+`truncate` shortens a string  down to the number of characters passed as a parameter. If the number of characters specified is less than the length of the string, an ellipsis (...) is appended to the string and is included in the character count.
+
+```liquid
+{% raw %}
+{{ "Ground control to Major Tom." | truncate: 20 }}
+{% endraw %}
+```
+
+```text
+{{ "Ground control to Major Tom." | truncate: 20 }}
+```

filters/truncatewords.md

@@ -0,0 +1,15 @@
+---
+title: truncatewords
+---
+
+Shortens a string down to the number of words passed as the argument. If the specified number of words is less than the number of words in the string, an ellipsis (...) is appended to the string.
+
+```liquid
+{% raw %}
+{{ "Ground control to Major Tom." | truncatewords: 3 }}
+{% endraw %}
+```
+
+```text
+{{ "Ground control to Major Tom." | truncatewords: 3 }}
+```

filters/uniq.md

@@ -0,0 +1,19 @@
+---
+title: uniq
+---
+
+Removes any duplicate elements in an array.
+
+```liquid
+{% raw %}
+{% assign my_array = "ants, bugs, bees, bugs, ants" | split: ", " %}
+
+{{ my_array | uniq | join: ", " }}
+{% endraw %}
+```
+
+```text
+{% assign my_array = "ants, bugs, bees, bugs, ants" | split: ", " %}
+
+{{ my_array | uniq | join: ", " }}
+```

filters/upcase.md

@@ -0,0 +1,25 @@
+---
+title: upcase
+---
+
+Makes each character in a string uppercase. It has no effect on strings which are already all uppercase.
+
+```liquid
+{% raw %}
+{{ "Parker Moore" | upcase }}
+{% endraw %}
+```
+
+```text
+{{ "Parker Moore" | upcase }}
+```
+
+```liquid
+{% raw %}
+{{ "APPLE" | upcase }}
+{% endraw %}
+```
+
+```text
+{{ "APPLE" | upcase }}
+```

filters/url_encode.md

@@ -0,0 +1,25 @@
+---
+title: url_encode
+---
+
+Converts any URL-unsafe characters in a string into percent-encoded characters.
+
+```liquid
+{% raw %}
+{{ "john@liquid.com" | url_encode }}
+{% endraw %}
+```
+
+```text
+{{ "john@liquid.com" | url_encode }}
+```
+
+```liquid
+{% raw %}
+{{ "Tetsuro Takara" | url_encode }}
+{% endraw %}
+```
+
+```text
+{{ "Tetsuro Takara" | url_encode }}
+```

index.md

@@ -0,0 +1,16 @@
+---
+layout: default
+---
+
+{% include home-banner.html %}
+
+## What is Liquid?
+
+Liquid is an open-source template language created by [Shopify](https://www.shopify.com) and written in Ruby. It is the backbone of Shopify themes and is used to load dynamic content on storefronts.
+
+Liquid has been in production use since June 2006 and is now used by many other hosted web applications.
+
+## Who uses Liquid?
+
+{% include home-users-grid.html %}
+

lib/liquid.rb

@@ -1,91 +0,0 @@
-# frozen_string_literal: true
-
-# Copyright (c) 2005 Tobias Luetke
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-require "strscan"
-
-module Liquid
-  FilterSeparator             = /\|/
-  ArgumentSeparator           = ','
-  FilterArgumentSeparator     = ':'
-  VariableAttributeSeparator  = '.'
-  WhitespaceControl           = '-'
-  TagStart                    = /\{\%/
-  TagEnd                      = /\%\}/
-  TagName                     = /#|\w+/
-  VariableSignature           = /\(?[\w\-\.\[\]]\)?/
-  VariableSegment             = /[\w\-]/
-  VariableStart               = /\{\{/
-  VariableEnd                 = /\}\}/
-  VariableIncompleteEnd       = /\}\}?/
-  QuotedString                = /"[^"]*"|'[^']*'/
-  QuotedFragment              = /#{QuotedString}|(?:[^\s,\|'"]|#{QuotedString})+/o
-  TagAttributes               = /(\w[\w-]*)\s*\:\s*(#{QuotedFragment})/o
-  AnyStartingTag              = /#{TagStart}|#{VariableStart}/o
-  PartialTemplateParser       = /#{TagStart}.*?#{TagEnd}|#{VariableStart}.*?#{VariableIncompleteEnd}/om
-  TemplateParser              = /(#{PartialTemplateParser}|#{AnyStartingTag})/om
-  VariableParser              = /\[(?>[^\[\]]+|\g<0>)*\]|#{VariableSegment}+\??/o
-
-  RAISE_EXCEPTION_LAMBDA = ->(_e) { raise }
-  HAS_STRING_SCANNER_SCAN_BYTE = StringScanner.instance_methods.include?(:scan_byte)
-end
-
-require "liquid/version"
-require "liquid/deprecations"
-require "liquid/const"
-require 'liquid/standardfilters'
-require 'liquid/file_system'
-require 'liquid/parser_switching'
-require 'liquid/tag'
-require 'liquid/block'
-require 'liquid/parse_tree_visitor'
-require 'liquid/interrupts'
-require 'liquid/tags'
-require "liquid/environment"
-require 'liquid/lexer'
-require 'liquid/parser'
-require 'liquid/i18n'
-require 'liquid/drop'
-require 'liquid/tablerowloop_drop'
-require 'liquid/forloop_drop'
-require 'liquid/extensions'
-require 'liquid/errors'
-require 'liquid/interrupts'
-require 'liquid/strainer_template'
-require 'liquid/context'
-require 'liquid/tag'
-require 'liquid/block_body'
-require 'liquid/document'
-require 'liquid/variable'
-require 'liquid/variable_lookup'
-require 'liquid/range_lookup'
-require 'liquid/resource_limits'
-require 'liquid/expression'
-require 'liquid/template'
-require 'liquid/condition'
-require 'liquid/utils'
-require 'liquid/tokenizer'
-require 'liquid/parse_context'
-require 'liquid/partial_cache'
-require 'liquid/usage'
-require 'liquid/registers'
-require 'liquid/template_factory'

lib/liquid/block.rb

@@ -1,98 +0,0 @@
-# frozen_string_literal: true
-
-module Liquid
-  class Block < Tag
-    MAX_DEPTH = 100
-
-    def initialize(tag_name, markup, options)
-      super
-      @blank = true
-    end
-
-    def parse(tokens)
-      @body = new_body
-      while parse_body(@body, tokens)
-      end
-      @body.freeze
-    end
-
-    # For backwards compatibility
-    def render(context)
-      @body.render(context)
-    end
-
-    def blank?
-      @blank
-    end
-
-    def nodelist
-      @body.nodelist
-    end
-
-    def unknown_tag(tag_name, _markup, _tokenizer)
-      Block.raise_unknown_tag(tag_name, block_name, block_delimiter, parse_context)
-    end
-
-    # @api private
-    def self.raise_unknown_tag(tag, block_name, block_delimiter, parse_context)
-      if tag == 'else'
-        raise SyntaxError, parse_context.locale.t(
-          "errors.syntax.unexpected_else",
-          block_name: block_name,
-        )
-      elsif tag.start_with?('end')
-        raise SyntaxError, parse_context.locale.t(
-          "errors.syntax.invalid_delimiter",
-          tag: tag,
-          block_name: block_name,
-          block_delimiter: block_delimiter,
-        )
-      else
-        raise SyntaxError, parse_context.locale.t("errors.syntax.unknown_tag", tag: tag)
-      end
-    end
-
-    def raise_tag_never_closed(block_name)
-      raise SyntaxError, parse_context.locale.t("errors.syntax.tag_never_closed", block_name: block_name)
-    end
-
-    def block_name
-      @tag_name
-    end
-
-    def block_delimiter
-      @block_delimiter ||= "end#{block_name}"
-    end
-
-    private
-
-    # @api public
-    def new_body
-      parse_context.new_block_body
-    end
-
-    # @api public
-    def parse_body(body, tokens)
-      if parse_context.depth >= MAX_DEPTH
-        raise StackLevelError, "Nesting too deep"
-      end
-      parse_context.depth += 1
-      begin
-        body.parse(tokens, parse_context) do |end_tag_name, end_tag_params|
-          @blank &&= body.blank?
-
-          return false if end_tag_name == block_delimiter
-          raise_tag_never_closed(block_name) unless end_tag_name
-
-          # this tag is not registered with the system
-          # pass it to the current block for special handling or error reporting
-          unknown_tag(end_tag_name, end_tag_params, tokens)
-        end
-      ensure
-        parse_context.depth -= 1
-      end
-
-      true
-    end
-  end
-end

lib/liquid/block_body.rb

@@ -1,273 +0,0 @@
-# frozen_string_literal: true
-
-require 'English'
-
-module Liquid
-  class BlockBody
-    LiquidTagToken      = /\A\s*(#{TagName})\s*(.*?)\z/o
-    FullToken           = /\A#{TagStart}#{WhitespaceControl}?(\s*)(#{TagName})(\s*)(.*?)#{WhitespaceControl}?#{TagEnd}\z/om
-    FullTokenPossiblyInvalid = /\A(.*)#{TagStart}#{WhitespaceControl}?\s*(\w+)\s*(.*)?#{WhitespaceControl}?#{TagEnd}\z/om
-    ContentOfVariable   = /\A#{VariableStart}#{WhitespaceControl}?(.*?)#{WhitespaceControl}?#{VariableEnd}\z/om
-    WhitespaceOrNothing = /\A\s*\z/
-    TAGSTART            = "{%"
-    VARSTART            = "{{"
-
-    attr_reader :nodelist
-
-    def initialize
-      @nodelist = []
-      @blank    = true
-    end
-
-    def parse(tokenizer, parse_context, &block)
-      raise FrozenError, "can't modify frozen Liquid::BlockBody" if frozen?
-
-      parse_context.line_number = tokenizer.line_number
-
-      if tokenizer.for_liquid_tag
-        parse_for_liquid_tag(tokenizer, parse_context, &block)
-      else
-        parse_for_document(tokenizer, parse_context, &block)
-      end
-    end
-
-    def freeze
-      @nodelist.freeze
-      super
-    end
-
-    private def parse_for_liquid_tag(tokenizer, parse_context)
-      while (token = tokenizer.shift)
-        unless token.empty? || token.match?(WhitespaceOrNothing)
-          unless token =~ LiquidTagToken
-            # line isn't empty but didn't match tag syntax, yield and let the
-            # caller raise a syntax error
-            return yield token, token
-          end
-          tag_name = Regexp.last_match(1)
-          markup   = Regexp.last_match(2)
-
-          if tag_name == 'liquid'
-            parse_context.line_number -= 1
-            next parse_liquid_tag(markup, parse_context)
-          end
-
-          unless (tag = parse_context.environment.tag_for_name(tag_name))
-            # end parsing if we reach an unknown tag and let the caller decide
-            # determine how to proceed
-            return yield tag_name, markup
-          end
-          new_tag = tag.parse(tag_name, markup, tokenizer, parse_context)
-          @blank &&= new_tag.blank?
-          @nodelist << new_tag
-        end
-        parse_context.line_number = tokenizer.line_number
-      end
-
-      yield nil, nil
-    end
-
-    # @api private
-    def self.unknown_tag_in_liquid_tag(tag, parse_context)
-      Block.raise_unknown_tag(tag, 'liquid', '%}', parse_context)
-    end
-
-    # @api private
-    def self.raise_missing_tag_terminator(token, parse_context)
-      raise SyntaxError, parse_context.locale.t("errors.syntax.tag_termination", token: token, tag_end: TagEnd.inspect)
-    end
-
-    # @api private
-    def self.raise_missing_variable_terminator(token, parse_context)
-      raise SyntaxError, parse_context.locale.t("errors.syntax.variable_termination", token: token, tag_end: VariableEnd.inspect)
-    end
-
-    # @api private
-    def self.render_node(context, output, node)
-      node.render_to_output_buffer(context, output)
-    rescue => exc
-      blank_tag = !node.instance_of?(Variable) && node.blank?
-      rescue_render_node(context, output, node.line_number, exc, blank_tag)
-    end
-
-    # @api private
-    def self.rescue_render_node(context, output, line_number, exc, blank_tag)
-      case exc
-      when MemoryError
-        raise
-      when UndefinedVariable, UndefinedDropMethod, UndefinedFilter
-        context.handle_error(exc, line_number)
-      else
-        error_message = context.handle_error(exc, line_number)
-        unless blank_tag # conditional for backwards compatibility
-          output << error_message
-        end
-      end
-    end
-
-    private def parse_liquid_tag(markup, parse_context)
-      liquid_tag_tokenizer = parse_context.new_tokenizer(
-        markup, start_line_number: parse_context.line_number, for_liquid_tag: true
-      )
-      parse_for_liquid_tag(liquid_tag_tokenizer, parse_context) do |end_tag_name, _end_tag_markup|
-        if end_tag_name
-          BlockBody.unknown_tag_in_liquid_tag(end_tag_name, parse_context)
-        end
-      end
-    end
-
-    private def handle_invalid_tag_token(token, parse_context)
-      if token.end_with?('%}')
-        yield token, token
-      else
-        BlockBody.raise_missing_tag_terminator(token, parse_context)
-      end
-    end
-
-    private def parse_for_document(tokenizer, parse_context, &block)
-      while (token = tokenizer.shift)
-        next if token.empty?
-        case
-        when token.start_with?(TAGSTART)
-          whitespace_handler(token, parse_context)
-          unless token =~ FullToken
-            return handle_invalid_tag_token(token, parse_context, &block)
-          end
-          tag_name = Regexp.last_match(2)
-          markup   = Regexp.last_match(4)
-
-          if parse_context.line_number
-            # newlines inside the tag should increase the line number,
-            # particularly important for multiline {% liquid %} tags
-            parse_context.line_number += Regexp.last_match(1).count("\n") + Regexp.last_match(3).count("\n")
-          end
-
-          if tag_name == 'liquid'
-            parse_liquid_tag(markup, parse_context)
-            next
-          end
-
-          unless (tag = parse_context.environment.tag_for_name(tag_name))
-            # end parsing if we reach an unknown tag and let the caller decide
-            # determine how to proceed
-            return yield tag_name, markup
-          end
-          new_tag = tag.parse(tag_name, markup, tokenizer, parse_context)
-          @blank &&= new_tag.blank?
-          @nodelist << new_tag
-        when token.start_with?(VARSTART)
-          whitespace_handler(token, parse_context)
-          @nodelist << create_variable(token, parse_context)
-          @blank = false
-        else
-          if parse_context.trim_whitespace
-            token.lstrip!
-          end
-          parse_context.trim_whitespace = false
-          @nodelist << token
-          @blank &&= token.match?(WhitespaceOrNothing)
-        end
-        parse_context.line_number = tokenizer.line_number
-      end
-
-      yield nil, nil
-    end
-
-    def whitespace_handler(token, parse_context)
-      if token[2] == WhitespaceControl
-        previous_token = @nodelist.last
-        if previous_token.is_a?(String)
-          first_byte = previous_token.getbyte(0)
-          previous_token.rstrip!
-          if previous_token.empty? && parse_context[:bug_compatible_whitespace_trimming] && first_byte
-            previous_token << first_byte
-          end
-        end
-      end
-      parse_context.trim_whitespace = (token[-3] == WhitespaceControl)
-    end
-
-    def blank?
-      @blank
-    end
-
-    # Remove blank strings in the block body for a control flow tag (e.g. `if`, `for`, `case`, `unless`)
-    # with a blank body.
-    #
-    # For example, in a conditional assignment like the following
-    #
-    # ```
-    # {% if size > max_size %}
-    #   {% assign size = max_size %}
-    # {% endif %}
-    # ```
-    #
-    # we assume the intention wasn't to output the blank spaces in the `if` tag's block body, so this method
-    # will remove them to reduce the render output size.
-    #
-    # Note that it is now preferred to use the `liquid` tag for this use case.
-    def remove_blank_strings
-      raise "remove_blank_strings only support being called on a blank block body" unless @blank
-      @nodelist.reject! { |node| node.instance_of?(String) }
-    end
-
-    def render(context)
-      render_to_output_buffer(context, +'')
-    end
-
-    def render_to_output_buffer(context, output)
-      freeze unless frozen?
-
-      context.resource_limits.increment_render_score(@nodelist.length)
-
-      idx = 0
-      while (node = @nodelist[idx])
-        if node.instance_of?(String)
-          output << node
-        else
-          render_node(context, output, node)
-          # If we get an Interrupt that means the block must stop processing. An
-          # Interrupt is any command that stops block execution such as {% break %}
-          # or {% continue %}. These tags may also occur through Block or Include tags.
-          break if context.interrupt? # might have happened in a for-block
-        end
-        idx += 1
-
-        context.resource_limits.increment_write_score(output)
-      end
-
-      output
-    end
-
-    private
-
-    def render_node(context, output, node)
-      BlockBody.render_node(context, output, node)
-    end
-
-    def create_variable(token, parse_context)
-      if token.end_with?("}}")
-        i = 2
-        i = 3 if token[i] == "-"
-        parse_end = token.length - 3
-        parse_end -= 1 if token[parse_end] == "-"
-        markup_end = parse_end - i + 1
-        markup = markup_end <= 0 ? "" : token.slice(i, markup_end)
-
-        return Variable.new(markup, parse_context)
-      end
-
-      BlockBody.raise_missing_variable_terminator(token, parse_context)
-    end
-
-    # @deprecated Use {.raise_missing_tag_terminator} instead
-    def raise_missing_tag_terminator(token, parse_context)
-      BlockBody.raise_missing_tag_terminator(token, parse_context)
-    end
-
-    # @deprecated Use {.raise_missing_variable_terminator} instead
-    def raise_missing_variable_terminator(token, parse_context)
-      BlockBody.raise_missing_variable_terminator(token, parse_context)
-    end
-  end
-end

lib/liquid/condition.rb

@@ -1,183 +0,0 @@
-# frozen_string_literal: true
-
-module Liquid
-  # Container for liquid nodes which conveniently wraps decision making logic
-  #
-  # Example:
-  #
-  #   c = Condition.new(1, '==', 1)
-  #   c.evaluate #=> true
-  #
-  class Condition # :nodoc:
-    @@operators = {
-      '==' => ->(cond, left, right) {  cond.send(:equal_variables, left, right) },
-      '!=' => ->(cond, left, right) { !cond.send(:equal_variables, left, right) },
-      '<>' => ->(cond, left, right) { !cond.send(:equal_variables, left, right) },
-      '<' => :<,
-      '>' => :>,
-      '>=' => :>=,
-      '<=' => :<=,
-      'contains' => lambda do |_cond, left, right|
-        if left && right && left.respond_to?(:include?)
-          right = right.to_s if left.is_a?(String)
-          left.include?(right)
-        else
-          false
-        end
-      rescue Encoding::CompatibilityError
-        # "✅".b.include?("✅") raises Encoding::CompatibilityError despite being materially equal
-        left.b.include?(right.b)
-      end,
-    }
-
-    class MethodLiteral
-      attr_reader :method_name, :to_s
-
-      def initialize(method_name, to_s)
-        @method_name = method_name
-        @to_s = to_s
-      end
-    end
-
-    @@method_literals = {
-      'blank' => MethodLiteral.new(:blank?, '').freeze,
-      'empty' => MethodLiteral.new(:empty?, '').freeze,
-    }
-
-    def self.operators
-      @@operators
-    end
-
-    def self.parse_expression(parse_context, markup)
-      @@method_literals[markup] || parse_context.parse_expression(markup)
-    end
-
-    attr_reader :attachment, :child_condition
-    attr_accessor :left, :operator, :right
-
-    def initialize(left = nil, operator = nil, right = nil)
-      @left     = left
-      @operator = operator
-      @right    = right
-
-      @child_relation  = nil
-      @child_condition = nil
-    end
-
-    def evaluate(context = deprecated_default_context)
-      condition = self
-      result = nil
-      loop do
-        result = interpret_condition(condition.left, condition.right, condition.operator, context)
-
-        case condition.child_relation
-        when :or
-          break if Liquid::Utils.to_liquid_value(result)
-        when :and
-          break unless Liquid::Utils.to_liquid_value(result)
-        else
-          break
-        end
-        condition = condition.child_condition
-      end
-      result
-    end
-
-    def or(condition)
-      @child_relation  = :or
-      @child_condition = condition
-    end
-
-    def and(condition)
-      @child_relation  = :and
-      @child_condition = condition
-    end
-
-    def attach(attachment)
-      @attachment = attachment
-    end
-
-    def else?
-      false
-    end
-
-    def inspect
-      "#<Condition #{[@left, @operator, @right].compact.join(' ')}>"
-    end
-
-    protected
-
-    attr_reader :child_relation
-
-    private
-
-    def equal_variables(left, right)
-      if left.is_a?(MethodLiteral)
-        if right.respond_to?(left.method_name)
-          return right.send(left.method_name)
-        else
-          return nil
-        end
-      end
-
-      if right.is_a?(MethodLiteral)
-        if left.respond_to?(right.method_name)
-          return left.send(right.method_name)
-        else
-          return nil
-        end
-      end
-
-      left == right
-    end
-
-    def interpret_condition(left, right, op, context)
-      # If the operator is empty this means that the decision statement is just
-      # a single variable. We can just poll this variable from the context and
-      # return this as the result.
-      return context.evaluate(left) if op.nil?
-
-      left  = Liquid::Utils.to_liquid_value(context.evaluate(left))
-      right = Liquid::Utils.to_liquid_value(context.evaluate(right))
-
-      operation = self.class.operators[op] || raise(Liquid::ArgumentError, "Unknown operator #{op}")
-
-      if operation.respond_to?(:call)
-        operation.call(self, left, right)
-      elsif left.respond_to?(operation) && right.respond_to?(operation) && !left.is_a?(Hash) && !right.is_a?(Hash)
-        begin
-          left.send(operation, right)
-        rescue ::ArgumentError => e
-          raise Liquid::ArgumentError, e.message
-        end
-      end
-    end
-
-    def deprecated_default_context
-      warn("DEPRECATION WARNING: Condition#evaluate without a context argument is deprecated" \
-        " and will be removed from Liquid 6.0.0.")
-      Context.new
-    end
-
-    class ParseTreeVisitor < Liquid::ParseTreeVisitor
-      def children
-        [
-          @node.left,
-          @node.right,
-          @node.child_condition,
-          @node.attachment
-        ].compact
-      end
-    end
-  end
-
-  class ElseCondition < Condition
-    def else?
-      true
-    end
-
-    def evaluate(_context)
-      true
-    end
-  end
-end

lib/liquid/const.rb

@@ -1,8 +0,0 @@
-# frozen_string_literal: true
-
-module Liquid
-  module Const
-    EMPTY_HASH = {}.freeze
-    EMPTY_ARRAY = [].freeze
-  end
-end

lib/liquid/context.rb

@@ -1,295 +0,0 @@
-# frozen_string_literal: true
-
-module Liquid
-  # Context keeps the variable stack and resolves variables, as well as keywords
-  #
-  #   context['variable'] = 'testing'
-  #   context['variable'] #=> 'testing'
-  #   context['true']     #=> true
-  #   context['10.2232']  #=> 10.2232
-  #
-  #   context.stack do
-  #      context['bob'] = 'bobsen'
-  #   end
-  #
-  #   context['bob']  #=> nil  class Context
-  class Context
-    attr_reader :scopes, :errors, :registers, :environments, :resource_limits, :static_registers, :static_environments
-    attr_accessor :exception_renderer, :template_name, :partial, :global_filter, :strict_variables, :strict_filters, :environment
-
-    # rubocop:disable Metrics/ParameterLists
-    def self.build(environment: Environment.default, environments: {}, outer_scope: {}, registers: {}, rethrow_errors: false, resource_limits: nil, static_environments: {}, &block)
-      new(environments, outer_scope, registers, rethrow_errors, resource_limits, static_environments, environment, &block)
-    end
-
-    def initialize(environments = {}, outer_scope = {}, registers = {}, rethrow_errors = false, resource_limits = nil, static_environments = {}, environment = Environment.default)
-      @environment = environment
-      @environments = [environments]
-      @environments.flatten!
-
-      @static_environments = [static_environments].flatten(1).freeze
-      @scopes              = [outer_scope || {}]
-      @registers           = registers.is_a?(Registers) ? registers : Registers.new(registers)
-      @errors              = []
-      @partial             = false
-      @strict_variables    = false
-      @resource_limits     = resource_limits || ResourceLimits.new(environment.default_resource_limits)
-      @base_scope_depth    = 0
-      @interrupts          = []
-      @filters             = []
-      @global_filter       = nil
-      @disabled_tags       = {}
-
-      # Instead of constructing new StringScanner objects for each Expression parse,
-      # we recycle the same one.
-      @string_scanner = StringScanner.new("")
-
-      @registers.static[:cached_partials] ||= {}
-      @registers.static[:file_system] ||= environment.file_system
-      @registers.static[:template_factory] ||= Liquid::TemplateFactory.new
-
-      self.exception_renderer = environment.exception_renderer
-      if rethrow_errors
-        self.exception_renderer = Liquid::RAISE_EXCEPTION_LAMBDA
-      end
-
-      yield self if block_given?
-
-      # Do this last, since it could result in this object being passed to a Proc in the environment
-      squash_instance_assigns_with_environments
-    end
-    # rubocop:enable Metrics/ParameterLists
-
-    def warnings
-      @warnings ||= []
-    end
-
-    def strainer
-      @strainer ||= @environment.create_strainer(self, @filters)
-    end
-
-    # Adds filters to this context.
-    #
-    # Note that this does not register the filters with the main Template object. see <tt>Template.register_filter</tt>
-    # for that
-    def add_filters(filters)
-      filters = [filters].flatten.compact
-      @filters += filters
-      @strainer = nil
-    end
-
-    def apply_global_filter(obj)
-      global_filter.nil? ? obj : global_filter.call(obj)
-    end
-
-    # are there any not handled interrupts?
-    def interrupt?
-      !@interrupts.empty?
-    end
-
-    # push an interrupt to the stack. this interrupt is considered not handled.
-    def push_interrupt(e)
-      @interrupts.push(e)
-    end
-
-    # pop an interrupt from the stack
-    def pop_interrupt
-      @interrupts.pop
-    end
-
-    def handle_error(e, line_number = nil)
-      e = internal_error unless e.is_a?(Liquid::Error)
-      e.template_name ||= template_name
-      e.line_number   ||= line_number
-      errors.push(e)
-      exception_renderer.call(e).to_s
-    end
-
-    def invoke(method, *args)
-      strainer.invoke(method, *args).to_liquid
-    end
-
-    # Push new local scope on the stack. use <tt>Context#stack</tt> instead
-    def push(new_scope = {})
-      @scopes.unshift(new_scope)
-      check_overflow
-    end
-
-    # Merge a hash of variables in the current local scope
-    def merge(new_scopes)
-      @scopes[0].merge!(new_scopes)
-    end
-
-    # Pop from the stack. use <tt>Context#stack</tt> instead
-    def pop
-      raise ContextError if @scopes.size == 1
-      @scopes.shift
-    end
-
-    # Pushes a new local scope on the stack, pops it at the end of the block
-    #
-    # Example:
-    #   context.stack do
-    #      context['var'] = 'hi'
-    #   end
-    #
-    #   context['var']  #=> nil
-    def stack(new_scope = {})
-      push(new_scope)
-      yield
-    ensure
-      pop
-    end
-
-    # Creates a new context inheriting resource limits, filters, environment etc.,
-    # but with an isolated scope.
-    def new_isolated_subcontext
-      check_overflow
-
-      self.class.build(
-        environment: @environment,
-        resource_limits: resource_limits,
-        static_environments: static_environments,
-        registers: Registers.new(registers),
-      ).tap do |subcontext|
-        subcontext.base_scope_depth   = base_scope_depth + 1
-        subcontext.exception_renderer = exception_renderer
-        subcontext.filters  = @filters
-        subcontext.strainer = nil
-        subcontext.errors   = errors
-        subcontext.warnings = warnings
-        subcontext.disabled_tags = @disabled_tags
-      end
-    end
-
-    def clear_instance_assigns
-      @scopes[0] = {}
-    end
-
-    # Only allow String, Numeric, Hash, Array, Proc, Boolean or <tt>Liquid::Drop</tt>
-    def []=(key, value)
-      @scopes[0][key] = value
-    end
-
-    # Look up variable, either resolve directly after considering the name. We can directly handle
-    # Strings, digits, floats and booleans (true,false).
-    # If no match is made we lookup the variable in the current scope and
-    # later move up to the parent blocks to see if we can resolve the variable somewhere up the tree.
-    # Some special keywords return symbols. Those symbols are to be called on the rhs object in expressions
-    #
-    # Example:
-    #   products == empty #=> products.empty?
-    def [](expression)
-      evaluate(Expression.parse(expression, @string_scanner))
-    end
-
-    def key?(key)
-      self[key] != nil
-    end
-
-    def evaluate(object)
-      object.respond_to?(:evaluate) ? object.evaluate(self) : object
-    end
-
-    # Fetches an object starting at the local scope and then moving up the hierachy
-    def find_variable(key, raise_on_not_found: true)
-      # This was changed from find() to find_index() because this is a very hot
-      # path and find_index() is optimized in MRI to reduce object allocation
-      index = @scopes.find_index { |s| s.key?(key) }
-
-      variable = if index
-        lookup_and_evaluate(@scopes[index], key, raise_on_not_found: raise_on_not_found)
-      else
-        try_variable_find_in_environments(key, raise_on_not_found: raise_on_not_found)
-      end
-
-      # update variable's context before invoking #to_liquid
-      variable.context = self if variable.respond_to?(:context=)
-
-      liquid_variable = variable.to_liquid
-
-      liquid_variable.context = self if variable != liquid_variable && liquid_variable.respond_to?(:context=)
-
-      liquid_variable
-    end
-
-    def lookup_and_evaluate(obj, key, raise_on_not_found: true)
-      if @strict_variables && raise_on_not_found && obj.respond_to?(:key?) && !obj.key?(key)
-        raise Liquid::UndefinedVariable, "undefined variable #{key}"
-      end
-
-      value = obj[key]
-
-      if value.is_a?(Proc) && obj.respond_to?(:[]=)
-        obj[key] = value.arity == 0 ? value.call : value.call(self)
-      else
-        value
-      end
-    end
-
-    def with_disabled_tags(tag_names)
-      tag_names.each do |name|
-        @disabled_tags[name] = @disabled_tags.fetch(name, 0) + 1
-      end
-      yield
-    ensure
-      tag_names.each do |name|
-        @disabled_tags[name] -= 1
-      end
-    end
-
-    def tag_disabled?(tag_name)
-      @disabled_tags.fetch(tag_name, 0) > 0
-    end
-
-    protected
-
-    attr_writer :base_scope_depth, :warnings, :errors, :strainer, :filters, :disabled_tags
-
-    private
-
-    attr_reader :base_scope_depth
-
-    def try_variable_find_in_environments(key, raise_on_not_found:)
-      @environments.each do |environment|
-        found_variable = lookup_and_evaluate(environment, key, raise_on_not_found: raise_on_not_found)
-        if !found_variable.nil? || @strict_variables && raise_on_not_found
-          return found_variable
-        end
-      end
-      @static_environments.each do |environment|
-        found_variable = lookup_and_evaluate(environment, key, raise_on_not_found: raise_on_not_found)
-        if !found_variable.nil? || @strict_variables && raise_on_not_found
-          return found_variable
-        end
-      end
-      nil
-    end
-
-    def check_overflow
-      raise StackLevelError, "Nesting too deep" if overflow?
-    end
-
-    def overflow?
-      base_scope_depth + @scopes.length > Block::MAX_DEPTH
-    end
-
-    def internal_error
-      # raise and catch to set backtrace and cause on exception
-      raise Liquid::InternalError, 'internal'
-    rescue Liquid::InternalError => exc
-      exc
-    end
-
-    def squash_instance_assigns_with_environments
-      @scopes.last.each_key do |k|
-        @environments.each do |env|
-          if env.key?(k)
-            scopes.last[k] = lookup_and_evaluate(env, k)
-            break
-          end
-        end
-      end
-    end # squash_instance_assigns_with_environments
-  end # Context
-end # Liquid

lib/liquid/deprecations.rb

@@ -1,22 +0,0 @@
-# frozen_string_literal: true
-
-require "set"
-
-module Liquid
-  class Deprecations
-    class << self
-      attr_accessor :warned
-
-      Deprecations.warned = Set.new
-
-      def warn(name, alternative)
-        return if warned.include?(name)
-
-        warned << name
-
-        caller_location = caller_locations(2, 1).first
-        Warning.warn("[DEPRECATION] #{name} is deprecated. Use #{alternative} instead. Called from #{caller_location}\n")
-      end
-    end
-  end
-end

lib/liquid/document.rb

@@ -1,65 +0,0 @@
-# frozen_string_literal: true
-
-module Liquid
-  class Document
-    def self.parse(tokens, parse_context)
-      doc = new(parse_context)
-      doc.parse(tokens, parse_context)
-      doc
-    end
-
-    attr_reader :parse_context, :body
-
-    def initialize(parse_context)
-      @parse_context = parse_context
-      @body = new_body
-    end
-
-    def nodelist
-      @body.nodelist
-    end
-
-    def parse(tokenizer, parse_context)
-      while parse_body(tokenizer)
-      end
-      @body.freeze
-    rescue SyntaxError => e
-      e.line_number ||= parse_context.line_number
-      raise
-    end
-
-    def unknown_tag(tag, _markup, _tokenizer)
-      case tag
-      when 'else', 'end'
-        raise SyntaxError, parse_context.locale.t("errors.syntax.unexpected_outer_tag", tag: tag)
-      else
-        raise SyntaxError, parse_context.locale.t("errors.syntax.unknown_tag", tag: tag)
-      end
-    end
-
-    def render_to_output_buffer(context, output)
-      @body.render_to_output_buffer(context, output)
-    end
-
-    def render(context)
-      render_to_output_buffer(context, +'')
-    end
-
-    private
-
-    def new_body
-      parse_context.new_block_body
-    end
-
-    def parse_body(tokenizer)
-      @body.parse(tokenizer, parse_context) do |unknown_tag_name, unknown_tag_markup|
-        if unknown_tag_name
-          unknown_tag(unknown_tag_name, unknown_tag_markup, tokenizer)
-          true
-        else
-          false
-        end
-      end
-    end
-  end
-end

lib/liquid/drop.rb

@@ -1,84 +0,0 @@
-# frozen_string_literal: true
-
-require 'set'
-
-module Liquid
-  # A drop in liquid is a class which allows you to export DOM like things to liquid.
-  # Methods of drops are callable.
-  # The main use for liquid drops is to implement lazy loaded objects.
-  # If you would like to make data available to the web designers which you don't want loaded unless needed then
-  # a drop is a great way to do that.
-  #
-  # Example:
-  #
-  #   class ProductDrop < Liquid::Drop
-  #     def top_sales
-  #       Shop.current.products.find(:all, :order => 'sales', :limit => 10 )
-  #     end
-  #   end
-  #
-  #   tmpl = Liquid::Template.parse( ' {% for product in product.top_sales %} {{ product.name }} {%endfor%} '  )
-  #   tmpl.render('product' => ProductDrop.new ) # will invoke top_sales query.
-  #
-  # Your drop can either implement the methods sans any parameters
-  # or implement the liquid_method_missing(name) method which is a catch all.
-  class Drop
-    attr_writer :context
-
-    def initialize
-      @context = nil
-    end
-
-    # Catch all for the method
-    def liquid_method_missing(method)
-      return nil unless @context&.strict_variables
-      raise Liquid::UndefinedDropMethod, "undefined method #{method}"
-    end
-
-    # called by liquid to invoke a drop
-    def invoke_drop(method_or_key)
-      if self.class.invokable?(method_or_key)
-        send(method_or_key)
-      else
-        liquid_method_missing(method_or_key)
-      end
-    end
-
-    def key?(_name)
-      true
-    end
-
-    def inspect
-      self.class.to_s
-    end
-
-    def to_liquid
-      self
-    end
-
-    def to_s
-      self.class.name
-    end
-
-    alias_method :[], :invoke_drop
-
-    # Check for method existence without invoking respond_to?, which creates symbols
-    def self.invokable?(method_name)
-      invokable_methods.include?(method_name.to_s)
-    end
-
-    def self.invokable_methods
-      @invokable_methods ||= begin
-        blacklist = Liquid::Drop.public_instance_methods + [:each]
-
-        if include?(Enumerable)
-          blacklist += Enumerable.public_instance_methods
-          blacklist -= [:sort, :count, :first, :min, :max]
-        end
-
-        whitelist = [:to_liquid] + (public_instance_methods - blacklist)
-        Set.new(whitelist.map(&:to_s))
-      end
-    end
-  end
-end

lib/liquid/environment.rb

@@ -1,159 +0,0 @@
-# frozen_string_literal: true
-
-module Liquid
-  # The Environment is the container for all configuration options of Liquid, such as
-  # the registered tags, filters, and the default error mode.
-  class Environment
-    # The default error mode for all templates. This can be overridden on a
-    # per-template basis.
-    attr_accessor :error_mode
-
-    # The tags that are available to use in the template.
-    attr_accessor :tags
-
-    # The strainer template which is used to store filters that are available to
-    # use in templates.
-    attr_accessor :strainer_template
-
-    # The exception renderer that is used to render exceptions that are raised
-    # when rendering a template
-    attr_accessor :exception_renderer
-
-    # The default file system that is used to load templates from.
-    attr_accessor :file_system
-
-    # The default resource limits that are used to limit the resources that a
-    # template can consume.
-    attr_accessor :default_resource_limits
-
-    class << self
-      # Creates a new environment instance.
-      #
-      # @param tags [Hash] The tags that are available to use in
-      #  the template.
-      # @param file_system The default file system that is used
-      #  to load templates from.
-      # @param error_mode [Symbol] The default error mode for all templates
-      #  (either :strict, :warn, or :lax).
-      # @param exception_renderer [Proc] The exception renderer that is used to
-      #   render exceptions.
-      # @yieldparam environment [Environment] The environment instance that is being built.
-      # @return [Environment] The new environment instance.
-      def build(tags: nil, file_system: nil, error_mode: nil, exception_renderer: nil)
-        ret = new
-        ret.tags = tags if tags
-        ret.file_system = file_system if file_system
-        ret.error_mode = error_mode if error_mode
-        ret.exception_renderer = exception_renderer if exception_renderer
-        yield ret if block_given?
-        ret.freeze
-      end
-
-      # Returns the default environment instance.
-      #
-      # @return [Environment] The default environment instance.
-      def default
-        @default ||= new
-      end
-
-      # Sets the default environment instance for the duration of the block
-      #
-      # @param environment [Environment] The environment instance to use as the default for the
-      #   duration of the block.
-      # @yield
-      # @return [Object] The return value of the block.
-      def dangerously_override(environment)
-        original_default = @default
-        @default = environment
-        yield
-      ensure
-        @default = original_default
-      end
-    end
-
-    # Initializes a new environment instance.
-    # @api private
-    def initialize
-      @tags = Tags::STANDARD_TAGS.dup
-      @error_mode = :lax
-      @strainer_template = Class.new(StrainerTemplate).tap do |klass|
-        klass.add_filter(StandardFilters)
-      end
-      @exception_renderer = ->(exception) { exception }
-      @file_system = BlankFileSystem.new
-      @default_resource_limits = Const::EMPTY_HASH
-      @strainer_template_class_cache = {}
-    end
-
-    # Registers a new tag with the environment.
-    #
-    # @param name [String] The name of the tag.
-    # @param klass [Liquid::Tag] The class that implements the tag.
-    # @return [void]
-    def register_tag(name, klass)
-      @tags[name] = klass
-    end
-
-    # Registers a new filter with the environment.
-    #
-    # @param filter [Module] The module that contains the filter methods.
-    # @return [void]
-    def register_filter(filter)
-      @strainer_template_class_cache.clear
-      @strainer_template.add_filter(filter)
-    end
-
-    # Registers multiple filters with this environment.
-    #
-    # @param filters [Array<Module>] The modules that contain the filter methods.
-    # @return [self]
-    def register_filters(filters)
-      @strainer_template_class_cache.clear
-      filters.each { |f| @strainer_template.add_filter(f) }
-      self
-    end
-
-    # Creates a new strainer instance with the given filters, caching the result
-    # for faster lookup.
-    #
-    # @param context [Liquid::Context] The context that the strainer will be
-    #   used in.
-    # @param filters [Array<Module>] The filters that the strainer will have
-    #   access to.
-    # @return [Liquid::Strainer] The new strainer instance.
-    def create_strainer(context, filters = Const::EMPTY_ARRAY)
-      return @strainer_template.new(context) if filters.empty?
-
-      strainer_template = @strainer_template_class_cache[filters] ||= begin
-        klass = Class.new(@strainer_template)
-        filters.each { |f| klass.add_filter(f) }
-        klass
-      end
-
-      strainer_template.new(context)
-    end
-
-    # Returns the names of all the filter methods that are available to use in
-    # the strainer template.
-    #
-    # @return [Array<String>] The names of all the filter methods.
-    def filter_method_names
-      @strainer_template.filter_method_names
-    end
-
-    # Returns the tag class for the given tag name.
-    #
-    # @param name [String] The name of the tag.
-    # @return [Liquid::Tag] The tag class.
-    def tag_for_name(name)
-      @tags[name]
-    end
-
-    def freeze
-      @tags.freeze
-      # TODO: freeze the tags, currently this is not possible because of liquid-c
-      # @strainer_template.freeze
-      super
-    end
-  end
-end