在M-x编译中使用当前缓冲区的文件名

Question

我希望emacs使用当前缓冲区的文件名作为传递给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)，但显然您无法在此处传递s表达式。

Answer 1

1。阅读函数文档

C-H ˚F 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.

现在我们找到了我们想要的东西，让我们......

2。 ...阅读变量的文档...

C-H v 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。 ......最后根据您的需求调整示例

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

当然，如果有的话，您可以轻松自定义它以使用rake Rakefile。