“Wrong type argument：commandp”将lambda绑定到键时出错 [英] "Wrong type argument: commandp" error when binding a lambda to a key

问题描述

 （global-set-key [？\Mn]（lambda（）（forward-line 5）））
  

什么是错误？我相当确定这很简单我缺少一些明显的东西。

解决方案

global-set-key 期待一个交互式的命令。 （lambda（）（interactive）（forward-line 5））应该可以工作。

Ch f commandp 是一个非常好的起点，这样的错误。

I am getting a "Wrong type argument: commandp, (lambda nil (forward-line 5))" here.

(global-set-key [?\M-n] (lambda () (forward-line 5)))

What is the error? I'm fairly sure it's simple & I'm missing something obvious.

解决方案

global-set-key expects an interactive command. (lambda () (interactive) (forward-line 5)) ought to work.

By the way, C-h f commandp is a pretty good starting point for errors like that.

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