End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Gem::Command#add_option

add_option(*opts) { |value, options| ... }

lib/rubygems/command.rb View on GitHub ↗

# File tmp/rubies/ruby-3.0.5/lib/rubygems/command.rb, line 355
def add_option(*opts, &handler) # :yields: value, options
  group_name = Symbol === opts.first ? opts.shift : :options

  raise "Do not pass an empty string in opts" if opts.include?("")

  @option_groups[group_name] << [opts, handler]
end

Add a command-line option and handler to the command.

See Gem::OptionParser#make_switch for an explanation of opts.

handler will be called with two values, the value of the argument and the options hash.

If the first argument of add_option is a Symbol, it’s used to group options in output. See ‘gem help list` for an example.

See also #add_extra_args #add_parser_run_info .specific_extra_args_hash #arguments also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

‹ prev#add_extra_args next ›#add_parser_run_info