Find commented code in Ruby

find_commented_code.arb

#!/usr/bin/env ruby
ARGV.each do |filename|
  fileobject = File.new(filename, "r")
  next if fileobject.nil?

  occurences = 0
  lines = fileobject.readlines
  lines.each do |line|
    next unless line.match(/\A *#.+\n/)

    if line.match(/.*[print|puts] ["'].*["']\n/)
      occurences+=1
      next
    end

    line = line.gsub(/\n/,"")
    line = line.sub(/\A *# */," ")

    begin
      eval(line)
    rescue SyntaxError => e
      occurences+=1 if e.message.match(/.*unexpected end.*|.*void.*/)
      next
    rescue
      occurences+=1
      next
    end

    next if line.match(/ *#.*/) # double comments
    occurences+=1
  end

  next if occurences == 0

  percentage = (occurences/Float(lines.count)).truncate(4) * 100
  next if percentage < 10
  pp "#{fileobject.path} has ~#{occurences}/#{lines.count}(#{percentage}%) lines with commented code"
  fileobject.close()
  local_variables.each { |e| eval("#{e} = nil") }
end

Quick disclaimer, this script is by no means exhaustive!

You can run it with find */ -name *.rb -type f | xargs ruby ./find_commented_code.arb

This worked for me
Run the following script in your rails console or irb. Also. you can create a file and paste it there, then run ruby your_file_name.rb It will give you all files where is commented code.

require 'find'

directory = './' # Change this to your project directory

code_patterns = [
  /^\s*#\s*\w+\s*=\s*/,
  /^\s*#\s*\w+\s*\.\w+\s*/,
  /^\s*#\s*def\s+\w+/,
  /^\s*#\s*end\b/,
  /^\s*#\s*if\b/,
  /^\s*#\s*class\b/,
  /^\s*#\s*module\b/,
  /^\s*#\s*do\b/,
  /^\s*#\s*{.*}/,
  /^\s*#\s*begin\b/,
  /^\s*#\s*rescue\b/,
]

def commented_code?(line, patterns)
  patterns.any? { |pattern| line.match(pattern) }
end

files_with_commented_code = []

Find.find(directory) do |path|
  next unless File.file?(path)
  next unless path.end_with?('.rb') # Only consider Ruby files

  File.foreach(path).with_index do |line, line_num|
    if commented_code?(line, code_patterns)
      files_with_commented_code << path unless files_with_commented_code.include?(path)
      puts "File: #{path}, Line #{line_num + 1}: #{line.strip}"
    end
  end
end

if files_with_commented_code.empty?
  puts "No files with commented-out code found."
else
  puts "\nFiles with commented-out code:"
  files_with_commented_code.each { |file| puts file }
end

Thanks for the contribution @HMADAHMD! It's good to have a Ruby alternative!