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elisp: Modes

 
 22 Major and Minor Modes
 ************************
 
 A “mode” is a set of definitions that customize Emacs behavior in useful
 ways.  There are two varieties of modes: “minor modes”, which provide
 features that users can turn on and off while editing; and “major
 modes”, which are used for editing or interacting with a particular kind
 of text.  Each buffer has exactly one “major mode” at a time.
 
    This chapter describes how to write both major and minor modes, how
 to indicate them in the mode line, and how they run hooks supplied by
 the user.  For related topics such as keymaps and syntax tables, see
 Keymaps, and Syntax Tables.
 

Menu

 
· Hooks             How to use hooks; how to write code that provides hooks.
· Major Modes       Defining major modes.
· Minor Modes       Defining minor modes.
· Mode Line Format  Customizing the text that appears in the mode line.
· Imenu             Providing a menu of definitions made in a buffer.
· Font Lock Mode    How modes can highlight text according to syntax.
· Auto-Indentation  How to teach Emacs to indent for a major mode.
· Desktop Save Mode How modes can have buffer state saved between
                         Emacs sessions.
 

Info Catalog elisp: Keymaps elisp: Top elisp: Documentation