如何使用Emacs更改文件的读/写模式？ [英] How do I change read/write mode for a file using Emacs?

问题描述

如果一个文件被设置为只读模式，那么如何将它改变为写入模式，反之亦然呢？

If a file is set to read only mode, how do I change it to write mode and vice versa from within Emacs?

推荐答案

Mx toggle-read-only

M-x toggle-read-only

在我的Windows框中，这相当于Alt-x打开元提示并输入toggle-read-only来调用正确的elisp函数。

On my Windows box, that amounts to Alt-x to bring up the meta prompt and typing "toggle-read-only" to call the correct elisp function.

如果使用默认键盘绑定，

If you are using the default keyboard bindings,

Cx Cq

C-x C-q

（你朗读为 Control-X Control-Q）将具有相同的效果。不过请注意，鉴于emacs基本上无限可重新配置，您的里程可能会有所不同。

(which you read aloud as "Control-X Control-Q") will have the same effect. Remember, however, given that emacs is essentially infinitely re-configurable, your mileage may vary.

从评论中追踪：缓冲区的可写状态不会更改文件的可写权限。如果您尝试写入只读文件，您将看到一条确认消息。但是，如果您拥有该文件，您可以写出您的更改，而不用更改文件的权限。

Following up from the commentary: you should note that the writeable status of the buffer does not change the writeable permission of the file. If you try to write out to a read only file, you'll see a confirmation message. However, if you own the file, you can write out your changes without changing the permissions on the file.

如果您'想要快速更改文件，而无需经过添加写入许可的多个步骤，写出更改，删除写入权限。我倾向于忘记最后一步，稍后将潜在的关键文件打开以进行意外更改。

This is very convenient if you'd like to make a quick change to a file without having to go through the multiple steps of add write permission, write out changes, remove write permission. I tend to forget that last step, leaving potentially critical files open for accidental changes later on.

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