Emacs
<text, tool> /ee'maks/ (Editing MACroS, or Extensible MACro System, GNU Emacs) A popular screen editor for
Unix and most other operating systems.
Emacs is distributed by the
Free Software Foundation and was
Richard Stallman's first step in the
GNU project.
Emacs is extensible - it is easy to add new functions; customisable - you can rebind keys, and modify the behaviour of existing functions; self-documenting - there is extensive on-line, context-sensitive help; and has a real-time "what you see is what you get" display.
Emacs is writen in
C and the higher levels are programmed in
Emacs Lisp.
Emacs has an entire
Lisp system inside it.
It was originally written in
TECO under
ITS at the
MIT AI lab.
AI Memo 554 described it as "an advanced, self-documenting, customisable, extensible real-time display editor".
It includes facilities to view directories, run compilation subprocesses and send and receive
electronic mail and
Usenet news (
GNUS).
W3 is a
web browser, the ange-ftp package provides transparent access to files on remote
FTP servers.
Calc is a calculator and
symbolic mathematics package.
There are "modes" provided to assist in editing most well-known programming languages.
Most of these extra functions are configured to load automatically on first use, reducing start-up time and memory consumption.
Many hackers (including
Denis Howe) spend more than 80% of their
tube time inside Emacs.
GNU Emacs is available for
Unix,
VMS,
GNU/
Linux,
FreeBSD, NetBSD, OpenBSD, MS Windows,
MS-DOS, and other systems.
Emacs has been re-implemented more than 30 times.
Other variants include
GOSMACS, CCA Emacs, UniPress Emacs, Montgomery Emacs, and
XEmacs.
Jove,
epsilon, and
MicroEmacs are limited look-alikes.
Some Emacs versions running under window managers iconify as an overflowing kitchen sink, perhaps to suggest the one feature the editor does not (yet) include.
Indeed, some hackers find Emacs too
heavyweight and
baroque for their taste, and expand the name as "Escape Meta Alt Control Shift" to spoof its heavy reliance on keystrokes decorated with
bucky bits.
Other spoof expansions include "Eight Megabytes And Constantly Swapping", "Eventually "malloc()'s All Computer Storage", and "Emacs Makes A Computer Slow" (see
recursive acronym).
See also
vi.
Latest version: 20.6, as of 2000-05-11.
21.1 (
RSN) adds a new redisplay engine with support for proportional text, images, toolbars, tool tips, toolkit scroll bars, and a mouse-sensitive mode line.
FTP from your nearest
GNU archive site.
E-mail: (bug reports only) <
[email protected]>.
Usenet newsgroups: news:gnu.emacs.help, news:gnu.emacs.bug, news:alt.religion.emacs, news:gnu.emacs.sources, news:gnu.emacs.announce.
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