Add wide character support (tabs/emojis) and other minor fixes

samples/ruby.rb

@@ -1,4 +1,87 @@
 #!/usr/bin/env ruby
+
+# Unicode / Emoji / CJK stress-test Ruby file
+# Purpose: Test syntax highlighting + width calculation in your editor
+# ---------------------------------------------------------------
+
+# Basic output
+def greet
+  puts "Hello, 世界! 👋🌏"
+end
+
+# Emoji-heavy strings
+emojis = "👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏👋🌏"
+
+# Mixed-width CJK blocks
+cjk_samples = [
+  "漢字テスト",
+  "測試中文字串",
+  "한국어 테스트",
+  "ひらがなカタカナ😀混合",
+  "大量の文字列🚀🚀🚀",
+]
+
+# Ruby regex with unicode
+unicode_regex = /[一-龯ぁ-んァ-ヶー々〆〤]/
+
+# Unicode identifiers (valid in Ruby)
+变量 = 123
+π = 3.14159
+挨拶 = -> { "こんにちは" }
+
+# Method using unicode variable names
+def math_test
+  puts "π * 2 = #{π * 2}"
+end
+
+# Iterate through CJK samples
+cjk_samples.each_with_index do |str, idx|
+  puts "CJK[#{idx}] => #{str} (len=#{str.length})"
+end
+
+# Test emoji width behaviors
+puts "Emoji count: #{emojis.length}"
+
+# Multi-line string with unicode
+multi = <<~EOF
+  これは複数行テキストです。
+  Emojis inside heredoc: 🎉🔥✨💀❤️🧡💛💚💙💜🖤🤍🤎
+  End of block.
+EOF
+
+puts multi
+
+# Arrays mixing everything
+mixed = [
+  "🐍 Ruby + Python? sacrilege! 🐍",
+  "日本語とEnglishと🔧mix",
+  "Spacing test →→→→→→→",
+  "Zero-width joiner test: 👨‍👩‍👧‍👦 family emoji",
+]
+
+mixed.each { |m| puts m }
+
+# Unicode in comments — highlight me!
+# コメント：エディタのハイライトを確認します✨
+# Emojis should not break formatting: 🦀🦊🐱‍👤🤖
+
+# Dummy Ruby logic
+5.times do |i|
+  puts "Loop #{i}: 🌟 #{cjk_samples[i % cjk_samples.size]}"
+end
+
+# String escape sequences + unicode
+escaped = "Line1\nLine2\tTabbed 😀"
+puts escaped
+
+# Frozen string literal test
+# frozen_string_literal: true
+const_str = "定数文字列🔒".freeze
+puts const_str
+
+# End marker
+puts "--- END OF UNICODE TEST FILE ---"
+
 # Ruby syntax highlighting test
 
 =begin