22 Working with Multiple Buffers

1. 创建缓冲区包含文件：

   • 使用 C-x C-f 查找文件。
   • Emacs 会自动创建第二个缓冲区并切换过去。

2. 已有文件缓冲区：

   • 如果文件已在缓冲区中，C-x C-f 只会移动到已有缓冲区。

3. 防止多版本文件：

   • 避免每次从磁盘读取文件，防止多个稍有不同的版本。

4. 新文件：

   • 如果指定的文件名不存在，Emacs 会创建一个新文件并移动到空白缓冲区。

这里是这段文字的重点内容总结：

1. 在缓冲区之间移动：

   • 使用 C-x b 移动。

2. 默认缓冲区名：

   • Emacs 显示一个默认的缓冲区名称。
   • 如果是你想要的缓冲区，按 Enter。

3. 选择正确缓冲区：

   • 输入正确缓冲区名称的前几个字符，然后按 Tab 键，Emacs 会补全名称。
   • 按 Enter 移动到该缓冲区。

If you type C-x b followed by:	Emacs:
A new buffer name	Creates a new buffer that isn’t connected with a file and moves there.
The name of an existing buffer	Moves you to the buffer (it doesn’t matter whether the buffer is connected with a file or not).

Alternatively, the Buffer Menu popup lists buffers by major mode, and you can choose one. Hold down Ctrl and click the left mouse button to see a pop-up menu of your current buffers. (The Buffers menu at the top of the screen also shows all current buffers.)

To cycle through all the buffers you have, type C-x → to go to the next buffer (in the buffer list) or C-x to go to the previous buffer. (Don’t hold down Ctrl while you press the arrow key or Emacs beeps unhappily.)

To delete a buffer, type C-x k (for kill-buffer). Emacs shows the name of the buffer currently displayed; press Enter to delete it or type another buffer name if the one being displayed is not the one you want to delete, then press Enter.

Type M-x kill-some-buffers to weed out unneeded buffers this way. Emacs displays the name of each buffer and whether or not it was modified, then asks whether you want to kill it.