Emacs Lisp 函数中的(交互式)是什么意思? [英] What does (interactive) mean in an Emacs Lisp function?

问题描述

Emacs Lisp 函数通常是这样启动的:

Emacs Lisp function often start like this:

(lambda () (interactive) ...

(交互式)"有什么作用?

What does "(interactive)" do?

推荐答案

只是为了澄清(它在引用的文档中 查理引用的) (interactive) 不仅适用于键绑定函数，还适用于任何函数.如果没有 (interactive)，它只能以编程方式调用，不能从 M-x(或通过键绑定)调用.

Just to clarify (it is in the quoted docs that Charlie cites) (interactive) is not just for key-bound functions, but for any function. Without (interactive), it can only be called programmatically, not from M-x (or via key-binding).

请注意，仅向函数添加(交互式)"也不一定会使其以这种方式工作 - 函数不具有交互性的原因可能有很多.范围、依赖、参数等

Note that just adding "(interactive)" to a function won't necessarily make it work that way, either -- there could be many reasons functions are not interactive. Scoping, dependencies, parameters, etc.

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