Implement syntax highlighting
- Create a generic incremental syntax highlighting system. - Implement a ruby syntax highlighter for it.
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#!/usr/bin/env ruby
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# Unicode / Emoji / CJK stress-test Ruby file
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# Purpose: Test syntax highlighting + width calculation in your editor
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# ---------------------------------------------------------------
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# Mixed-width CJKssssssssssssssss LoadErssssssssssssssssssssssss
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cjk_samples = [
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'漢字テスト',
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'測試中文字串',
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'한국어 테스트',
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'ひらがなカタカナ混合'
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]
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# a hex color: #FFFFFF shouldn't hl here: hsl(147rad, 50%, 47%) as it is not css-style file
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0x603010 # another hex color
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# Ruby regex with unicode
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$unicode_regex_multiline = /[一-龯ぁ-ん12288ァ
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\-ヶー
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s wow
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々〆〤]/
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UNICORE = /
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s
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{#{ss}}
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\C-s\u{10}
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/
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UNINITCORE = %(
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{{#{}}}
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test = "A:\x41 B:\101 C:\u0043 D:\u{44 45} NUL:\0 DEL:\c? CTRL_A:\cA META_X:\M-x CTRL_META_X:\C-\M-x MIX:\C-\M-z N:\N{UNICODE NAME}"
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)
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# Unicode identifiers (valid in Ruby)
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变量 = 0x5_4eddaee
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π = 0.314_159e+2, ?\u0234, "\,", ?\x0A, 's', true, false, 0
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挨拶 = -> { "こんに \n ちは" }
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arr = []
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not_arr = NotABuiltin.new
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raise NameError or SystemExit or CustomError or Errno or ErrorNotAtAll
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# Method using unicode variable names
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def math_test
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puts "π * 2 = #{π * 2}"
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end
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# Iterate through CJK samples
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cjk_samples.each_with_index do |str, idx:|
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puts %! CJK[#{idx}] => #{str} (len=#{str.length})\! !
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symbol = :"
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a
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"
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sym2 = :hello
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end
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# Test emoji width behaviors
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puts "Emoji count: #{emojis.length}"
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# Multi-line string with unicode
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multi = <<~BASH
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# Function recursion demo
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factorial() {
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local n="$1"
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if ((n <= 1)); then
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echo 1
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else\ns
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local prev
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prev=$(factorial $((n - 1)))
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echo $((n * prev))
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before #{ interpol
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# {' '}
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# comment should be fine heres s
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$a / $-s + 0xFF
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}s#{' '}
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x
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a after
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fi
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} #{s}
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log INFO "factorial(5) = $(factorial 5)"
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BASH
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puts multi
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# Arrays mixing everything
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mixed = [
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'🐍 Ruby + Python? sacrilege! 🐍',
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'日本語とEnglishと🔧mix',
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'Spacing test →→→→→→→',
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'Zero-width joiner test: 👨👩👧👦 family emoji'
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]
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two_docs = <<~DOC1, <<~DOC2
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stuff for doc2
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rdvajehvbaejbfh
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DOC1
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stuff for doc 2 with #{!interpolation} and more
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DOC2
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p = 0 << 22 # not a heredoc
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mixed.each { |m| puts m }
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# Unicode in comments — highlight me!
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# コメント：エディタのハイライトを確認します✨
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# Emojis should not break formatting: 🦀🦊🐱👤🤖
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# Dummy Ruby logic
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5.times do |i|
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puts "Loop #{i}: 🌟 #{cjk_samples[i % cjk_samples.size]}"
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end
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# String escape sequences + unicode
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escaped = "Line1\nLine2\tTabbed 😀"
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puts escaped
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p = 0 << 2
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# Frozen string literal test
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# frozen_string_literal: true
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const_str = '定数文字列🔒'.freeze
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puts const_str
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# End marker
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puts '--- END OF UNICODE TEST FILE ---'
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# Ruby syntax highlighting test
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# This is a multi-line comment.
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# It spans multiple lines.
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# Good for testing highlighting.
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#
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# This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped line test, This is a wrapped linetest,
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#
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# Constants
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PI = 3.14159
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MAX_ITER = 5
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# Module
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module Utilities
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def self.random_greeting
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%w[Hello Hi Hey Hola Bonjour Merhaba].sample
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end
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def self.factorial(n)
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return 1 if n <= 1
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n * factorial(n - 1)
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end
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end
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# Class
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class TestObject
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attr_accessor :name, :value
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def initialize(name, value)
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@name = name
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@value = value
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end
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def display
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puts "#{@name}: #{@value}"
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end
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private
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def double_value
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@value * 2
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end
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end
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# Inheritance
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class SpecialObject < TestObject
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def triple_value
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@value * 3
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end
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end
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# Lambda
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adder = ->(x, y) { x + y }
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# Array and hash
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numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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hash = { a: 1, b: 2, c: 3 }
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# Iteration
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numbers.each do |n|
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puts "Number: #{n}"
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end
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# Hash iteration
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hash.each do |key, value|
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puts "#{key} => #{value}"
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end
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# Conditional
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numbers.each do |n|
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if n.even?
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puts "#{n} is even"
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else
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puts "#{n} is odd"
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end
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end
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# Method definition
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def greet_person(name)
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puts "#{Utilities.random_greeting}, #{name}!"
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return true if name == 'harry'
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's'
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end
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h = a / a
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# Calling methods
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greet_person('Alice')
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greet_person('Bob')
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# Loops
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i = 0
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while i < 5
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puts "Loop iteration #{i}"
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i += 1
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end
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for j in 1..3
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puts "For loop #{j}"
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end
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# Begin-rescue-ensure
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begin
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risky = 10 / 2
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puts "Risky operation succeeded: #{risky}"
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rescue ZeroDivisionError => e
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puts "Caught an error: #{e}"
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ensure
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puts 'This runs no matter what'
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end
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# Arrays of objects
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objs = []
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5.times do |k|
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objs << TestObject.new("Obj#{k}", k)
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end
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objs.each(&:display)
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# Nested arrays
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nested = [[1, 2], [3, 4], [5, 6]]
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nested.each do |arr|
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arr.each { |x| print "#{x} " }
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puts
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end
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# Case statement
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numbers.each do |n|
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case n
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when 1..3
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puts "#{n} is small"
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when 4..7
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puts "#{n} is medium"
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else
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puts "#{n} is large"
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end
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end
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# Using factorial
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(0..5).each do |n|
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puts "Factorial of #{n} is #{Utilities.factorial(n)}"
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end
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# Special objects
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so = SpecialObject.new('Special', 10)
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puts "Double: #{so.double_value}, Triple: #{so.triple_value}"
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# String interpolation and formatting
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puts "PI is approximately #{PI.round(2)}"
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# Multi-line strings
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multi_line = <<~TEXT
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k kmW ;
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This is a multi-line string.
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It spans multiple lines.
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Gossn sssmss
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ddsss
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od for testing highlighting.
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TEXT
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puts multi_line
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# Symbols and strings
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sym = :my_symbol == __dir__
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str = 'my string'
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puts "Symbol: #{sym}, String: #{str}"
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# Random numbers
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rand_nums = Array.new(5) { rand(100) }
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puts "Random numbers: #{rand_nums.join(', ')}"
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# More loops
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rand_nums.each_with_index do |num, idx|
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puts "Index #{idx} has number #{num}"
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end
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# Ternary operator
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rand_nums.each do |num|
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puts num.even? ? "#{num} is even" : "#{num} is odd"
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end
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# Block with yield
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def wrapper
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puts 'Before block'
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yield if block_given?
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puts 'After block'
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end
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# ss
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wrapper { puts 'Inside block' }
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# Sorting
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sorted = rand_nums.sort
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puts "Sorted: #{sorted.join(', ')}"
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# Regex
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sample_text = 'The quick brown fox jumps over the lazy dog'
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puts "Match 'fox'?" if sample_text =~ /fox/
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# End of test script
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puts 'Ruby syntax highlighting test complete.'
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__END__
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Anything here should be ignored >><<
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{{{}}}[[[]]](((000)))
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