Emacs Lisp缓冲区失焦功能？

Question

Is there an emacs lisp function that will allow me to tell if a buffer is out of focus?

I am trying to write a hook that will get rid of the semantics *possible completion's* buffer right after it is out of focus.

Also is it possible to get rid of the *Messages* Buffer as well? I haven't found a function that would kill it.

Answer 1

You can test if a buffer is the buffer that currently has focus with current-buffer . For example, to test if *scratch* has the focus,

(eq 
 (current-buffer) 
 (get-buffer "*scratch*"))

The *Messages* buffer is an important part of emacs. It's the implicit target of the message function that is used to log various bits of information from all over. You can kill *Messages* like any other buffer, but it will just get recreated the next time something calls message . You could probably silence it by redefining the message function, but I'd question the point of doing so.

Answer 2

Related to your second question, Also is it possible to get rid of the Messages Buffer as well . If you're using ido-mode (and everyone should be using it!), you can hide the *Messages* buffer from the buffer listing with the following elisp:

(require 'ido)
(setq ido-ignore-buffers '("^\*Messages\*"))

Answer 3

You can try PopWin , It lets you specify buffers that will open in a special window. This window closes when the frame gets out of focus or when you press Cg