ruby – Capistrano 3.0 – 现在如何安全地提示输入密码？

# ...
set :mysql_password,proc { Capistrano::CLI.password_prompt "Gimme remote database server password. Don't worry,I won't tell anyone: " }
# ...

namespace :db do
  desc 'Dump remote database'
  task :dump do
    run "mysqldump -u #{mysql_user} -p #{mysql_database} > ~/#{mysql_database}.sql" do |channel,stream,data|
      if data =~ /^Enter password:/
        channel.send_data "#{mysql_password}n"
      end
    end
  end
end

它会提示输入密码,在您键入时不会显示密码,并且在日志和输出中不会留下任何痕迹.

现在,从3.0开始,我找到了唯一的方法：

# ...

namespace :db do
  desc 'Dump remote database'
  task :dump do
    ask :mysql_password,nil
    on roles(:db) do
      execute "mysqldump -u#{fetch :mysql_user} -p#{fetch :mysql_password} #{fetch :mysql_database} > ~/#{fetch :mysql_database}.sql"
    end
  end
end

它完成工作,但到处显示密码.

有没有人在3.0中找到一种安全的密码提示方式？谢谢！