emacs中的elisp REPL工具:ielm

ielm

ielm是一个Emacs自带的elisp REPL环境. 它继承自comint-mode,因此也就拥有了comint-mode的那些特性,比如命令历史,tab补全等等.

• 启动

  M-x ielm

• 绑定working buffer

  所谓working buffer就是一个特殊的buffer,你在ielm上执行的命令就好像是在该buffer上执行命令一样. 通过绑定working buffer,可用在ielm中修改buffer的buffer-local变量

  绑定方法为C-c C-b,然后选择要作为working buffer的buffer名称

• 启用auto complete

  默认情况下,ielm是不支持auto complete的. 可用将下面代码放入.emacs中

  (defun ielm-auto-complete ()                               
    "Enables `auto-complete' support in \\[ielm]."           
    (setq ac-sources '(ac-source-functions                   
                       ac-source-variables                   
                       ac-source-features                    
                       ac-source-symbols                     
                       ac-source-words-in-same-mode-buffers))
    (add-to-list 'ac-modes 'inferior-emacs-lisp-mode)        
    (auto-complete-mode 1))                                  
  (add-hook 'ielm-mode-hook 'ielm-auto-complete)