Unlike all other text editors, GNU Emacs is a complete working environment - you can stay within Emacs all day without leaving. The third edition of Learning GNU Emacs describes Emacs 21.3 from the ground up, including new user interface features such as icon-based toolbar and an interactive interface to Emacs customization. A new chapter details how to install and run Emacs on Mac OS X, Windows, and Linux, including tips for using Emacs effectively on those platforms. Learning GNU Emacs, third edition, covers: How to edit files with Emacs Using the operating system shell through Emacs How to use multiple buffers, windows, and frames Customizing Emacs interactively and through startup files Writing macros to avoid the tasks of repetitive Emacs as a programming environment for Java, C + +, and Perl , among others Using Emacs as an integrated development environment (IDE) Integrating Emacs with CVS, Subversion and change control systems for projects with multiple developers Writing HTML, XHTML, and XML with Emacs Emacs Lisp Basics This book is aimed at new Emacs users, whether they are programmers.