Differences between Emacs and Vim

Comparison of Emacs and Vim

Emacs and Vim are two command-line text editors widely used in Unix-like operating systems. Both programs have existed for several decades, leading to a long-standing competition known as the "editor war" within the free and open-source software community. While both tools allow users to edit plain text and source code, they utilize different interface designs and configuration methods.

Comparison table

Feature	Emacs	Vim
Initial release	1976	1991
Primary author	Richard Stallman	Bram Moolenaar
Editing model	Modeless (chord-based)	Modal (Normal, Insert, Visual)	-	Extension language	Emacs Lisp	VimScript / Lua (Neovim)
Memory footprint	High	Low
User interface	TUI and GUI	TUI and GUI
License	GNU GPL	Vim License (GPL compatible)

Venn diagram comparing Differences between Emacs and Vim

Design philosophy

The two editors follow distinct architectural paths. Vim is based on the older vi editor, which Bill Joy created for BSD in 1976. It follows the Unix philosophy of providing a tool that performs a specific task. Vim focuses on "modal" editing, where keys have different functions depending on the current state. In "Normal" mode, keys move the cursor or delete text, while "Insert" mode allows for standard typing. This design minimizes the need for users to reach for the mouse or modifier keys.

Emacs was originally developed as a set of Editor MACroS for the TECO editor at MIT. Unlike Vim, Emacs is a lisp interpreter that implements text editing as a library. This allows Emacs to function as an integrated environment. Users frequently use Emacs to manage email, browse file systems, and track tasks via Org-mode. This breadth of features resulted in the joking acronym "Eight Megabytes And Constantly Swapping," though modern hardware has made its resource usage less significant.

Configuration and extensibility

Extensibility is a core feature for both editors. Emacs uses Emacs Lisp (Elisp), a dialect of the Lisp programming language. Users can rewrite almost any part of the editor without restarting the program. The Emacs ecosystem includes Magit for Git version control and LSP-mode for language server integration.

Vim uses VimScript for configuration and scripting. Since the release of Vim 8.0 and the emergence of the Neovim fork, the editor has gained improved support for asynchronous tasks. Neovim specifically introduced Lua as an alternative to VimScript, which some developers prefer for its performance and syntax. While Vim is highly customizable, it generally remains focused on the act of editing files rather than acting as a full application platform.

Learning curve and usage

Both editors require a significant time investment to master. Vim requires users to memorize commands such as `h`, `j`, `k`, and `l` for movement and `i`, `a`, or `o` to enter text. Emacs relies on "chords," which are combinations of the Control and Alt (Meta) keys. For example, `C-x C-s` saves a file, and `C-x C-c` exits the program.

Standard distributions of Linux often include a version of vi or Vim by default, making it a standard tool for system administrators working on remote servers. Emacs is more commonly installed by developers who intend to use it as their primary work environment throughout the day.