在TestRuby目录新建gemfile
在gemfile输入以下内容
在TestRuby目录下创建.vscode目录，然后在 .vscode 里面再创建一个名字叫 launch.json 的文件，文件里面输入下面的内容。
在cmd（命令提示符中）输几个人指令而已：1.先打开ruby193的目录，复制当前的路径（资源管理器的地址栏上有路径），然后打开cmd,右键单击粘贴路径，在路径前面加上cd，注意有空格，就是： cd 路径 ，然后enter键,转到指定的路径后，输入以下命令：
ruby dk.rb 按回车键
ruby dk.rb init 按回车键
ruby dk.rb install 按回车键
gem install ruby-debug-ide 按回车键
第四个命令可能运行一次不行，那你就再粘贴那个命令再试一次。
然后就全部ok了！
先安装rubyinstaller，下载并解压DevKit，注意，这两个版本要对应，网页上有说明（http://rubyinstaller.org/downloads/），解压DevKit后，打开目录，运行devkitvars.bat（是不是必须的不确定）。打开cmd，进入DevKit的解压目录
ruby dk.rb
---
Configures an MSYS/MinGW based Development Kit (DevKit) for
each of the Ruby installations on your Windows system. The
DevKit enables you to build many of the available native
RubyGems that don't yet have a binary gem.
Usage: ruby dk.rb COMMAND [options]
where COMMAND is one of:
init prepare DevKit for installation
review review DevKit install plan
install install required DevKit executables
and 'install' [options] are:
-f, --force overwrite existing helper scripts
-------------
ruby dk.rb init
---
Initialization complete! Please review and modify the auto-generated
'config.yml' file to ensure it contains the root directories to all
of the installed Rubies you want enhanced by the DevKit.
--------------------------------
ruby dk.rb install
---
Invalid configuration or no Rubies listed. Please fix 'config.yml'
and rerun 'ruby dk.rb install'
如果出现的是这个，则需要修改config.yml
加入
- C:\Ruby200-x64
---
[INFO] Updating convenience notice gem override for 'C:/Ruby200-x64'
[INFO] Installing 'C:/Ruby200-x64/lib/ruby/site_ruby/devkit.rb'
这是对的
---------------------
gem install ruby-debug-ide
---
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
Successfully installed ruby-debug-ide-0.4.17
Parsing documentation for ruby-debug-ide-0.4.17
Installing ri documentation for ruby-debug-ide-0.4.17
1 gem installed
