module Kernel

# File lib/run-command.rb, line 7
def run_command(*args, **options)
  command = args.shift
  args = args.flatten.compact.map(&:to_s)
  env = options.delete(:env) || {}
  verbose = options.delete(:verbose) || false
  pretend = options.delete(:pretend) || false
  argv0 = options.delete(:argv0)
  input = options.delete(:input)
  if verbose
    warn "$ %s%s" % [
      env.empty? ? nil : env.map { |kv| kv.join('=') }.join(' ') + ' ',
      [command, *args].shelljoin,
    ]
  end
  unless pretend
    output = IO.popen(env, [argv0 ? [command, argv0] : command, *args], 'r+', options) do |io|
      io.write(input.to_s) if input
      io.close_write
      io.read
    end
    raise RunCommandFailed, "Command #{command.to_s.inspect} failed: #{$?}" if $? != 0
    output
  end
end