击键执行::: Vi编辑将保留键入键的每个排列。这将在决策树中创建一个路径，该路径明确地标识任何命令，而Emacs命令是立即执行的键入键的组合，使用户可以选择是否使用命令。

内存使用和可定制性::: vi是一个更小更快的程序，自定义能力更有限，而Emacs启动时间更长，需要更多内存。然而，它是高度可定制的，并且包含大量的特性，因为它本质上是为文本编辑而设计的Lisp程序的执行环境。

Emacs的好处

Emacs has both non-modal interface (by default) and modal one (e.g. it can emulate vim and vi through Evil, Viper, or Vimpulse). One of the most ported computer programs. It runs in text mode and under graphical user interfaces on a wide variety of operating systems, including most Unix-like systems (Linux, the various BSDs, Solaris, AIX, IRIX, macOSetc.), MS-DOS, Microsoft Windows, AmigaOS, and OpenVMS. Unix systems, both free and proprietary, frequently provide Emacs bundled with the operating system. Emacs server architecture allows multiple clients to attach to the same Emacs instance and share the buffer list, kill ring, undo history and other state. Pervasive online help system with keybindings, functions and commands documented on the fly. Extensible and customizable Lisp programming language variant (Emacs Lisp), with features that include: A powerful and extensible file manager (dired), integrated debugger, and a large set of development and other tools. Having every command be an Emacs Lisp function enables commands to DWIM (Do What I Mean) by programmatically responding to past actions and document state. For example, a switch-or-split-window command could switch to another window if one exists, or create one if needed. This cuts down on the number of keystrokes and commands a user must remember. "An OS inside an OS". Emacs Lisp enables Emacs to be programmed far beyond editing features. Even a base install contains several dozen applications, including two web browsers, news readers, several mail agents, four IRC clients, a version of ELIZA, and a variety of games. All of these applications are available anywhere Emacs runs, with the same user interface and functionality. Starting with version 24, Emacs includes a package manager, making it easy to install additional applications including alternate web browsers, EMMS (Emacs Multimedia System), and more. Also available are numerous packages for programming, including some targeted at specific language/library combinations or coding styles.

vi类编辑器的好处

Edit commands are composable Vi has a modal interface (which Emacs can emulate) Historically, vi loads faster than Emacs. While deeply associated with UNIX tradition, it runs on all systems that can implement the standard C library, including UNIX, Linux, AmigaOS, DOS, Windows, Mac, BeOS, OpenVMS, IRIX, AIX, HP-UX, BSD and POSIX-compliant systems. Extensible and customizable through Vim script or APIs for interpreted languages such as Python, Ruby, Perl, and Lua Ubiquitous. Essentially all Unix and Unix-like systems come with vi (or a variant) built-in. Vi (and ex, but not vim) is specified in the POSIX standard. System rescue environments, embedded systems (notably those with busybox) and other constrained environments often include vi, but not emacs.

来源:https://en.wikipedia.org/wiki/Editor_war

对我来说，emacs的优点是，

tramp模式允许您通过ssh编辑远程文件。就像本地文件一样。 Tramp-mode + dired =全功能SFTP客户端 支持您需要的所有语言。 内置的终端模拟器(术语模式)，所以我可以继续编码，而无需在应用程序之间切换。 可扩展性任何你不喜欢的东西都可以用lisp来改变。

Vim是一个方便的编辑器，你只需输入Vim的文件名来打开文件，编辑，保存和关闭。

Emacs是一个伪装成编辑器的“操作系统”，你可以评估代码来改变它的行为，并按你的喜好扩展它。在emacs上接收/发送电子邮件的模式类似于操作系统上的电子邮件软件。

当进行简单的编辑时，例如，修改配置文件，我使用vim。

否则，我永远不会离开emacs。

对于我来说，选择使用emacs而不是vim的最大区别是emacs内置的gdb支持。Vim的默认发行版中并没有包含这个功能，而且用于集成gdb和Vim的项目几乎不可能使用MacVim

Emacs实际上更像是一个无所不能的程序，而vi(m)实际上只是一个编辑器。如果您正在编辑文本，它们都很好，但我更喜欢emacs，因为我必须将一个移出主行才能移动，并在命令模式中不断键入错误的内容。如果您没有这个问题，vi(m)可能是您的编辑器。