This is the original Ruby script just slightly adjusted so that it runs with today's Ruby. ORIGINAL: https://github.com/textmate/cmake.tmbundle/blob/926867a414c1125abefa38161d82d71756f591a2/Support/arg_separators.rb

arg_separators.rb

#!/usr/bin/env -vS ruby -wKU

commands = `/usr/bin/env cmake --help-command-list`.lines
commands.shift # Skip version number

constants = []

commands.each do |cmd|
  cmd = cmd.strip.upcase
  help = `/usr/bin/env cmake --help-command #{cmd}`
  help.scan(/[a-zA-Z_]+\((.+?)\)/m) do |example|
    example[0].scan(/[A-Z_\d]{2,}/) do |constant|
      constants << constant
    end
  end
end

constants.uniq.sort.each { |constant| puts constant }