对lisp的支持，Emacs的是比较好，有Slime。后来，Vim也相应的出了Slimv，可能毕竟没有Emacs流行吧。一开始我的选择是Slimv，毕竟比较习惯vim了。但是安装这个插件遇到了很多问题。
对Vim的尝试
官方教程是直接下载插件放到vim目录下安装，我偷懒直接用Vundle从github安装的，结果运行出错。去google一下，发现这个项目下面有一个和我一模一样的错误：SlimvInitBuffer not defined。这是由于Vim对函数前缀b：的错误，之前的版本是直接忽略掉的，但是从vim7.4之后，就有问题了。参考这个issue，删掉所有的:b前缀就可以解决，因为其实:b什么都没有做。删掉是没有错误了，大还是我的REPL还是没有出现。
只好回到官方toturials上面了。发现上面说vim是需要pyhton-enable的，我去vim查看了一下版本，发现我的vim没有支持python，支持的是python3，只好重新编译安装。编译安装的过程可以参考这里。其实也可以不必重新安装，使用update-alternatives，可以直接将vim指定到python2.
花了很多时间之后，按照官方的教程下载，发现并没有启动，百般周折，最后还是选择了Racket。
最终选择Racket
Racket的前身是DrScheme（PLT-scheme？）现在plt-scheme的主页直接指向racket了。
安装方法是（ubuntu）：
- 从https://download.racket-lang.org/ 下载安装脚本。
- chmod +x [下载到的脚本名字]
- sudo ./[脚本名字]
话说用111M的一个单文件sh，这么样的安装方式我还是第一次见……安装好之后，可以从ubuntu的GUI打开软件了。用官方的example试一下吧：
Sorry I don’t have time to explore the problems you told me about Slimv, I was pretty busy since I arrived at this new city.
Anyway, it’s good to see you have a nice start. For these days, besides my usual work, I have to teach some mathematicians Lisp. And I always recommend Racket to be a entry point for them somehow.
By the way, if you are learning SICP, you probably want to check this out: https://docs.racket-lang.org/sicp-manual/index.html
If you already know it or some similar ones else, ignore that shit!
Happy Chinese New Year!
Thanks！Forget slimv, I gave up on it after trying to install it Twice, I think racket would be the perfect environment for lisp since the moment I downloaded it. The debug is awesome! And unfortunately I found it didn’t support auto complete, I don’t know why. But I can do with that.
Happy new year to you too! My friend! Take care of yourself! You can FaceTime me anytime when I get back to shanghai(4 feb).
Aha, my dear friend, come on, Racket is not for cavemen! You can type “Command + /” or “Ctrl + /” to enable auto-complete, depending on which OS you are using. To know more information, you may wanna check here: https://docs.racket-lang.org/drracket/Keyboard_Shortcuts.html
brilliant!
And I will be jealous about your nice IP address!