如何从rake任务启动IRB控制台？

Question

我正在尝试编写一个rake任务,它将设置一个镜像我的项目的环境.

task :environment do 
  require 'rubygems'
  require 'sequel'
  # require 'my_projects_special_files'
end

task :foo => [:environment] do
  require 'irb'
  IRB.start
end

导致irb抱怨"foo"不存在(任务的名称)

10:28:01:irb_test >> rake foo --trace
(in /Users/mwlang/projects/personal/rake/irb_test)
** Invoke foo (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute foo
rake aborted!
No such file or directory - foo
/opt/local/lib/ruby/1.8/irb/input-method.rb:68:in `initialize'
/opt/local/lib/ruby/1.8/irb/input-method.rb:68:in `open'
/opt/local/lib/ruby/1.8/irb/input-method.rb:68:in `initialize'
/opt/local/lib/ruby/1.8/irb/context.rb:80:in `new'
/opt/local/lib/ruby/1.8/irb/context.rb:80:in `initialize'
/opt/local/lib/ruby/1.8/irb.rb:92:in `new'
/opt/local/lib/ruby/1.8/irb.rb:92:in `initialize'
/opt/local/lib/ruby/1.8/irb.rb:57:in `new'
/opt/local/lib/ruby/1.8/irb.rb:57:in `start'
/Users/mwlang/projects/personal/rake/irb_test/Rakefile:9

Answer 1

IRB.start正在查看ARGV,其中包含rake命令行中的任务名称.首先尝试清除ARGV.

require 'irb'
ARGV.clear
IRB.start