学习GNU Emacs 3rd 1.2 理解文件和缓冲区

1.2. Understanding Files and Buffers

1.2. 理解文件和缓冲区

You don't really edit files with Emacs. Instead, Emacs copies the contents of a file into a temporary buffer and you edit that. The file on disk doesn't change until you save the buffer. Like files, Emacs buffers have names. The name of a buffer is usually the same as the name of the file that you're editing. There are a few exceptions. Some buffers don't have associated files—for example, *scratch* is just a temporary practice buffer, like a scratchpad; the help facility displays help messages in a buffer named *Help*, which also isn't connected to a file.

    使用Emacs时，你不是在编辑实际文件，而是Emacs把文件内容拷贝到临时缓冲区内，你实际是在编辑这个缓存区。在你保存缓冲区之前，硬盘上的文件不会改变。和文件一样，Emacs的缓冲区也有名称。缓冲区的名字通常和你编辑的文件名是相同的。不过也有些例外。一些缓冲区没有相对应的文件，例如：＊scratch＊只是一个临时输入缓冲区，像便笺一样。帮助功能在一个名为“＊Help＊”的缓冲区内显示帮助信息，而它也不和任何文件相关连。