From: "nobu (Nobuyoshi Nakada)" Date: 2012-12-26T05:47:40+09:00 Subject: [ruby-core:51135] [ruby-trunk - Bug #7498][Rejected] Optparse does not complete argument when used with :REQUIRED Issue #7498 has been updated by nobu (Nobuyoshi Nakada). Status changed from Assigned to Rejected Option name string has to come first. Put :REQUIRED after "--bug". ---------------------------------------- Bug #7498: Optparse does not complete argument when used with :REQUIRED https://bugs.ruby-lang.org/issues/7498#change-35074 Author: Gondolin (Damien Robert) Status: Rejected Priority: Normal Assignee: nobu (Nobuyoshi Nakada) Category: lib Target version: 2.0.0 ruby -v: ruby 1.9.3p327 (2012-11-10 revision 37606) [x86_64-linux] #!/usr/bin/env ruby require 'optparse' OptionParser.new do |opts| opts.on(:REQUIRED, "--bug", ["foo", "bar"]) do |v| puts v end opts.on(:REQUIRED, "--nobug ARG", ["foo", "bar"]) do |v| puts v end end.parse! ./bug.rb --bug b b ./bug.rb --nobug b bar As you can see, using "--bug" with :REQUIRED but without specifying the obligatory argument name, the argument to "--bug" does not get completed to the value in the array. -- http://bugs.ruby-lang.org/