Upgrade Ruby to 3.4 and fix build compatibility issues

- Upgrade Ruby from 3.2 to 3.4 (3.2 EOL in ~3 months)
- Update Bundler and gems to latest versions
- Upgrade Haml to 7.1 (blocking issue now resolved)
- Replace deprecated sass gem with sassc
- Replace Redcarpet with Kramdown to fix link_to nil error on Ruby 3.x
- Enable Uglifier harmony mode for ES6 syntax support
- Remove unused lib/unique_head.rb and lib/multilang.rb

Closes middleman/middleman#2818 workaround via Kramdown migration

Author: mmenanno

.ruby-version

@@ -1 +1 @@
-3.2.2
+3.4.7

Gemfile

@@ -1,17 +1,16 @@
-ruby '~> 3.2'
+ruby '~> 3.4'
 source 'https://rubygems.org'
 
 # Middleman
 gem 'middleman', '~>4.5'
 gem 'middleman-syntax', '~> 3.3'
 gem 'middleman-autoprefixer', '~> 3.0'
-# middleman-sprocket can not be updated to 4.1.1 until the below issue is resolved
-# https://github.com/middleman/middleman/issues/2302
+# middleman-sprockets can not be updated to 4.1.1 due to autoprefixer seeing
+# SCSS comments before compilation: https://github.com/middleman/middleman/issues/2302
 gem 'middleman-sprockets', '4.1.0'
 gem 'rouge', '~> 3.21'
-gem 'redcarpet', '~> 3.6.0'
+gem 'kramdown', '~> 2.5'
+gem 'kramdown-parser-gfm', '~> 1.1'
 gem 'nokogiri', '~> 1.15.4'
-gem 'sass'
-# Haml can't be updated to 6.0 due to a monkey patch in middleman-syntax that needs to be fixed
-# https://github.com/middleman/middleman-syntax/issues/80
-gem 'haml', '~> 5.2'
+gem 'sassc'
+gem 'haml', '~> 7.1'

Gemfile.lock

@@ -1,143 +1,161 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.0.8)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
+    activesupport (8.1.1)
+      base64
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
       i18n (>= 1.6, < 2)
+      json
+      logger (>= 1.4.2)
       minitest (>= 5.1)
-      tzinfo (~> 2.0)
-    addressable (2.8.5)
-      public_suffix (>= 2.0.2, < 6.0)
-    autoprefixer-rails (10.4.15.0)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
+    addressable (2.8.8)
+      public_suffix (>= 2.0.2, < 8.0)
+    autoprefixer-rails (10.4.21.0)
       execjs (~> 2)
-    backports (3.24.1)
+    base64 (0.3.0)
+    bigdecimal (4.0.1)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.2.2)
-    contracts (0.17)
-    dotenv (2.8.1)
-    erubis (2.7.0)
-    execjs (2.9.1)
+    concurrent-ruby (1.3.6)
+    connection_pool (3.0.2)
+    contracts (0.17.2)
+    dotenv (3.2.0)
+    drb (2.2.3)
+    erubi (1.13.1)
+    execjs (2.10.0)
     fast_blank (1.0.1)
-    fastimage (2.2.7)
-    ffi (1.16.3)
-    haml (5.2.2)
-      temple (>= 0.8.0)
+    fastimage (2.4.0)
+    ffi (1.17.2)
+    haml (7.1.0)
+      temple (>= 0.8.2)
+      thor
       tilt
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
-    hashie (3.6.0)
-    i18n (1.6.0)
+    hashie (5.0.0)
+    i18n (1.14.7)
       concurrent-ruby (~> 1.0)
-    kramdown (2.4.0)
-      rexml
-    listen (3.8.0)
+    json (2.18.0)
+    kramdown (2.5.1)
+      rexml (>= 3.3.9)
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.7.0)
     memoist (0.16.2)
-    middleman (4.5.0)
-      coffee-script (~> 2.2)
-      haml (>= 4.0.5)
-      kramdown (>= 2.3.0)
-      middleman-cli (= 4.5.0)
-      middleman-core (= 4.5.0)
+    middleman (4.6.2)
+      middleman-cli (= 4.6.2)
+      middleman-core (= 4.6.2)
     middleman-autoprefixer (3.0.0)
       autoprefixer-rails (~> 10.0)
       middleman-core (>= 4.0.0)
-    middleman-cli (4.5.0)
-      thor (>= 0.17.0, < 2.0)
-    middleman-core (4.5.0)
-      activesupport (>= 6.1, < 7.1)
+    middleman-cli (4.6.2)
+      thor (>= 0.17.0, < 2)
+    middleman-core (4.6.2)
+      activesupport (>= 6.1)
       addressable (~> 2.4)
-      backports (~> 3.6)
       bundler (~> 2.0)
-      contracts (~> 0.13)
+      coffee-script (~> 2.2)
+      contracts
       dotenv
-      erubis
+      erubi
       execjs (~> 2.0)
       fast_blank
       fastimage (~> 2.0)
+      haml (>= 4.0.5)
       hamster (~> 3.0)
-      hashie (~> 3.4)
-      i18n (~> 1.6.0)
+      hashie (>= 3.4, < 6.0)
+      i18n (>= 1.6, < 1.15)
+      kramdown (~> 2.4)
       listen (~> 3.0)
       memoist (~> 0.14)
       padrino-helpers (~> 0.15.0)
       parallel
-      rack (>= 1.4.5, < 3)
+      rack (>= 3)
+      rackup
       sassc (~> 2.0)
       servolux
-      tilt (~> 2.0.9)
+      tilt (~> 2.2)
       toml
-      uglifier (~> 3.0)
+      uglifier (>= 3, < 5)
       webrick
     middleman-sprockets (4.1.0)
       middleman-core (~> 4.0)
       sprockets (>= 3.0)
-    middleman-syntax (3.3.0)
+    middleman-syntax (3.6.1)
       middleman-core (>= 3.2)
       rouge (~> 3.2)
-    mini_portile2 (2.8.5)
-    minitest (5.20.0)
-    nokogiri (1.15.4)
+    mini_portile2 (2.8.9)
+    minitest (6.0.0)
+      prism (~> 1.5)
+    nokogiri (1.15.7)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     padrino-helpers (0.15.3)
       i18n (>= 0.6.7, < 2)
       padrino-support (= 0.15.3)
       tilt (>= 1.4.1, < 3)
     padrino-support (0.15.3)
-    parallel (1.23.0)
+    parallel (1.27.0)
     parslet (2.0.0)
-    public_suffix (5.0.3)
-    racc (1.7.1)
-    rack (2.2.8)
+    prism (1.7.0)
+    public_suffix (7.0.0)
+    racc (1.8.1)
+    rack (3.2.4)
+    rackup (2.3.1)
+      rack (>= 3)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
-    redcarpet (3.6.0)
-    rexml (3.2.6)
+    rexml (3.4.4)
     rouge (3.30.0)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
     sassc (2.4.0)
       ffi (~> 1.9)
+    securerandom (0.4.1)
     servolux (0.13.0)
-    sprockets (4.2.1)
+    sprockets (4.2.2)
       concurrent-ruby (~> 1.0)
+      logger
       rack (>= 2.2.4, < 4)
-    temple (0.10.3)
-    thor (1.3.0)
-    tilt (2.0.11)
+    temple (0.10.4)
+    thor (1.4.0)
+    tilt (2.6.1)
     toml (0.3.0)
       parslet (>= 1.8.0, < 3.0.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (3.2.0)
+    uglifier (4.2.1)
       execjs (>= 0.3.0, < 3)
-    webrick (1.8.1)
+    uri (1.1.1)
+    webrick (1.9.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  haml (~> 5.2)
+  haml (~> 7.1)
+  kramdown (~> 2.5)
+  kramdown-parser-gfm (~> 1.1)
   middleman (~> 4.5)
   middleman-autoprefixer (~> 3.0)
   middleman-sprockets (= 4.1.0)
   middleman-syntax (~> 3.3)
   nokogiri (~> 1.15.4)
-  redcarpet (~> 3.6.0)
   rouge (~> 3.21)
-  sass
+  sassc
 
 RUBY VERSION
-   ruby 3.2.2p53
+   ruby 3.4.7p58
 
 BUNDLED WITH
-   2.4.21
+   2.7.2

config.rb

@@ -1,18 +1,14 @@
-# Unique header generation
-require './lib/unique_head.rb'
+require 'uglifier'
 
 # Markdown
-set :markdown_engine, :redcarpet
+set :markdown_engine, :kramdown
 set :markdown,
-    fenced_code_blocks: true,
-    smartypants: true,
-    disable_indented_code_blocks: true,
-    prettify: true,
-    strikethrough: true,
-    tables: true,
-    with_toc_data: true,
-    no_intra_emphasis: true,
-    renderer: UniqueHeadCounter
+    input: 'GFM',
+    auto_ids: true,
+    hard_wrap: false,
+    smart_quotes: ['lsquo', 'rsquo', 'ldquo', 'rdquo'],
+    syntax_highlighter: :rouge,
+    syntax_highlighter_opts: { guess_lang: true }
 
 # Assets
 set :css_dir, 'stylesheets'
@@ -24,7 +20,6 @@
 activate :syntax
 ready do
   require './lib/monokai_sublime_slate.rb'
-  require './lib/multilang.rb'
 end
 
 activate :sprockets
@@ -50,7 +45,7 @@
   # If you're having trouble with Middleman hanging, commenting
   # out the following two lines has been known to help
   activate :minify_css
-  activate :minify_javascript
+  activate :minify_javascript, compressor: -> { Uglifier.new(harmony: true) }
   # activate :gzip
 end
 

lib/monokai_sublime_slate.rb

@@ -92,4 +92,4 @@ class MonokaiSublimeSlate < CSSTheme
               Operator,                         :fg => :bright_pink
       end
     end
-  end
+end