Gem::Platform#=~

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/platform.rb, line 239
def =~(other)
  case other
  when Gem::Platform then # nop
  when String then
    # This data is from http://gems.rubyforge.org/gems/yaml on 19 Aug 2007
    other = case other
            when /^i686-darwin(\d)/     then ["x86",       "darwin",  $1]
            when /^i\d86-linux/         then ["x86",       "linux",   nil]
            when "java", "jruby"        then [nil,         "java",    nil]
            when /^dalvik(\d+)?$/       then [nil,         "dalvik",  $1]
            when /dotnet(\-(\d+\.\d+))?/ then ["universal","dotnet",  $2]
            when /mswin32(\_(\d+))?/    then ["x86",       "mswin32", $2]
            when /mswin64(\_(\d+))?/    then ["x64",       "mswin64", $2]
            when "powerpc-darwin"       then ["powerpc",   "darwin",  nil]
            when /powerpc-darwin(\d)/   then ["powerpc",   "darwin",  $1]
            when /sparc-solaris2.8/     then ["sparc",     "solaris", "2.8"]
            when /universal-darwin(\d)/ then ["universal", "darwin",  $1]
            else other
    end

    other = Gem::Platform.new other
  else
    return nil
  end

  self === other
end