Unix:"M-"用什么修饰键参考(例如M-C) [英] Unix: what modifier key does "M-" refer to (e.g. M-C)

问题描述

我正在尝试在Nano中进行区分大小写的搜索.屏幕底部的帮助菜单显示我可以通过键入M-C来切换区分大小写.

I'm trying to do a case-sensitive search in Nano. The help menu at the bottom of the screen says I can toggle case-sensitivity by typing M-C.

^G Get Help         ^Y First Line       ^T Go To Line       ^W Beg of Par       M-J FullJstify      M-B Backwards
^C Cancel           ^V Last Line        ^R Replace          ^O End of Par       M-C Case Sens       M-R Regexp

我不确定该怎么做. M-是否引用我键入C时应按住的修饰键?还是M-表示我在按C之前应该先按某个键或组合键?

I'm not sure how to do this. Does M- refer to a modifier key that should be held while I type C? Or does M- mean I should press some key or key combination before hitting C?

推荐答案

M是指大多数键盘上都不存在的meta键. (它在软件中的使用主要是出于历史原因.)通常，元键由键盘上的另一个键模拟.在Windows和Linux上，通常是 Alt 密钥.在Mac OS X上，该键(也称为 Option )已经具有其他用途，因此使用了 Escape .

M refers to the meta key, which is not present on most keyboards. (Its use in software is for primarily historical reasons.) Usually, the meta key is emulated by another key on your keyboard. On Windows and Linux, it is usually the Alt key. On Mac OS X, that key (aka Option) already has other uses, and so Escape is used instead.

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