Extensible, customizable, self-documenting real-time display editor

Improved Unicode supportFont rendering with Fontconfig and XftSupport for using X displays and text terminals in one session, and for running as a daemonSupport for multi-file commits in distributed version-control systems (VC-dir)New modes and packages for viewing PDF and postscript files (Doc-view mode), connecting to processes through D-Bus (dbus), connecting to the GNU Privacy Guard (EasyPG), editing XML documents (nXML mode), editing Ruby programs (Ruby mode), and more

Changes

• Improved Unicode supportFont rendering with Fontconfig and XftSupport for using X displays and text terminals in one session, and for running as a daemonSupport for multi-file commits in distributed version-control systems (VC-dir)New modes and packages for viewing PDF and postscript files (Doc-view mode), connecting to processes through D-Bus (dbus), connecting to the GNU Privacy Guard (EasyPG), editing XML documents (nXML mode), editing Ruby programs (Ruby mode), and more

Emacs is a text editor and more. At its core is an interpreter for Emacs Lisp (“elisp”, for short), a dialect of the Lisp programming language with extensions to support text editing. Some of the features of GNU Emacs include:

• Content sensitive major modes for a wide variety of file types, from plain text to source code to HTML files.
• Complete online documentation, including a tutorial for new users.
• Highly extensible through the Emacs Lisp language.
• Support for many languages and their scripts, including all the European “Latin” scripts, Russian, Greek, Japanese, Chinese, Korean, Thai, Vietnamese, Lao, Ethiopian, and some Indian scripts. (Sorry, Mayan hieroglyphs are not supported.)
• A large number of extensions which add other functionality. The GNU Emacs distribution includes many extensions; many others are available separately–even a web browser