如何在 Emacs Lisp 中引用当前正在加载的文件? [英] How to refer to the file currently being loaded in Emacs Lisp?

问题描述

我希望包含对非 elisp 文件(一个小型​​ Python 程序)的引用，并且希望能够说它与当前文件位于同一目录中，但具有不同的文件名."在许多脚本语言中，有诸如 __FILE__(在 PHP 中)之类的东西，用于获取当前文件的绝对路径.

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.

如果要包含的文件在 load-path 中，那么我可以用 (locate-library "file.py" t) 找到它，但是我如果文件不在加载路径中，我会卡住.

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.

那么有没有办法让 Emacs Lisp 文件找到自己的绝对路径(加载时，未访问时)?

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

推荐答案

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'.

您可能还对 symbol-file 函数感兴趣，它会告诉您定义指定函数或变量的绝对文件名.

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.

如果你想变得有趣，你可以检查 load-in-progress 变量.如果那是 nil，则没有正在进行的加载(并且您可能在缓冲区中被 eval 处理).在这种情况下，您可以尝试 (buffer-file-name) 来获取文件名.

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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