如何引用目前在Emacs Lisp中加载的文件？ [英] How to refer to the file currently being loaded in Emacs Lisp?

问题描述

我正在寻找一个引用非elisp文件（一个小的Python程序），并希望能够说它与当前文件在同一个目录，但与不同的文件名。 在许多脚本语言中，有一些东西像 __ FILE __ （在PHP中），以获得当前文件的绝对路径。

如果要包含的文件位于 load-path 中，那么我可以使用（locate-libraryfile.py ），但是如果文件不在加载路径中，我会被卡住。

Emacs Lisp有一种方法文件找出自己的绝对路径（加载时，未被访问）？

解决方案

Mx描述-variable load-file-name

  load-file-name是'C源代码'。 
 
文档：
由`load'加载的文件的全名。 
  

您可能也对符号文件感兴趣函数，它将告诉你定义了一个指定的函数或变量的绝对文件名。

如果你想要看，可以查看 load-in-progress 变量。如果这是 nil ，那么没有任何负载正在进行中（你可能是缓冲区中的 eval d） 。在这种情况下，您可以尝试（buffer-file-name）获取文件名。

I am looking to include a reference to a non-elisp file (a small Python program), and would like to be able to say "it is in the same directory as the current file, but with a different file name." In many scripting languages, there are things like __FILE__ (in PHP) for getting an absolute path to the current file.

If the file to be included is in the load-path, then I can find it with (locate-library "file.py" t), but I'm kind of stuck if the file is not in the load path.

So is there a way for an Emacs Lisp file to find out its own absolute path (when being loaded, not visited)?

解决方案

M-x describe-variable load-file-name

load-file-name is a variable defined in `C source code'.

Documentation:
Full name of file being loaded by `load'.

You might also be interested in the symbol-file function, which will tell you the absolute filename in which a specified function or variable was defined.

If you want to get fancy, you can check the load-in-progress variable. If that's nil, then no load is in progress (and you're presumably being eval'd in a buffer). In that case, you could try (buffer-file-name) to get the filename.

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