Removed old spec macros and insert specifications macro. For https://github.com/mdn/translated-content/issues/5618

specifications.rb

#!/bin/env ruby

content_dir = File.expand_path(ARGV[0])
translated_dir = File.expand_path(ARGV[1])

Dir.glob("**/*.md", base: translated_dir).each do |path|
  content_file = "#{content_dir}/#{path}"
  translated_file = "#{translated_dir}/#{path}"

  has = false
  if File.exist?(content_file)
    has = File.read(content_file).include?("{{Specifications}}")
  end

  content = File.read(translated_file)

  header = -1
  found = false
  content.each_line.with_index do |line, index|
    header = index if line.match?(/^#[# ]/)
    if line.match?(/\{\{\s*SpecName/i) || line.match?(/\{\{\s*Spec2/i)
      found = true
      break
    end
  end

  if !found
    if has
      # puts "Missmatch: #{content_file}"
    end
    next
  end

  if found && !has
    puts "Missmatch: #{translated_file}"
    next
  end

  new_content = ""
  skip = false
  content.each_line.with_index do |line, index|
    if index == header
      new_content += line
      new_content += "\n"
      new_content += "{{Specifications}}\n"
      new_content += "\n"
      skip = true
    else
      skip = false if line.start_with?("#")
      new_content += line if !skip
    end
  end

  File.write(translated_file, new_content)
end