emacs - 在M-x编译中使用当前缓冲区的文件名

Question

我希望emacs将当前缓冲区的文件名用作传递给M-x compile的命令的一部分。例如，如果我正在编辑〜/ foo.rb，我希望M-x compile执行ruby ~/foo.rb
我尝试将compilation-command设置为(list "ruby" buffer-file-name)，但是显然您不能在此处传递s表达式。

Answer 1

1.阅读功能文档

C-hf compile RET

compile is an interactive autoloaded compiled Lisp function in
`compile.el'.
[snip]
Interactively, prompts for the command if `compilation-read-command' is
non-nil; otherwise uses `compile-command'.  With prefix arg, always prompts.
Additionally, with universal prefix arg, compilation buffer will be in
comint mode, i.e. interactive.

现在我们已经找到了想要的东西，让我们……

2.……阅读变量的文档……

C-hv compile-command RET

compile-command is a variable defined in `compile.el'.
Its value is "make -k "
[snip]
Sometimes it is useful for files to supply local values for this variable.
You might also use mode hooks to specify it in certain modes, like this:

    (add-hook 'c-mode-hook
       (lambda ()
     (unless (or (file-exists-p "makefile")
             (file-exists-p "Makefile"))
       (set (make-local-variable 'compile-command)
        (concat "make -k "
            (file-name-sans-extension buffer-file-name))))))

3.…最后使示例适应您的需求

(add-hook 'ruby-mode-hook
          (lambda ()
            (set (make-local-variable 'compile-command)
                 (concat "ruby " buffer-file-name))))

当然，您可以轻松地自定义它以使用 rake(如果有 Rakefile。