diff options
| author |   Patrick J Volkerding <volkerdi@slackware.com> | 2009-08-26 10:00:38 -0500 |
|---|---|---|
| committer |   Eric Hameleers <alien@slackware.com> | 2018-05-31 22:41:17 +0200 |
| commit | 5a12e7c134274dba706667107d10d231517d3e05 (patch) | |
| tree | 55718d5acb710fde798d9f38d0bbaf594ed4b296 /slackbook/html/emacs.html | |
| download | current-5a12e7c134274dba706667107d10d231517d3e05.tar.gz current-5a12e7c134274dba706667107d10d231517d3e05.tar.xz | |
Slackware 13.0slackware-13.0
Wed Aug 26 10:00:38 CDT 2009
Slackware 13.0 x86_64 is released as stable! Thanks to everyone who
helped make this release possible -- see the RELEASE_NOTES for the
credits. The ISOs are off to the replicator. This time it will be a
6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD.
We're taking pre-orders now at store.slackware.com. Please consider
picking up a copy to help support the project. Once again, thanks to
the entire Slackware community for all the help testing and fixing
things and offering suggestions during this development cycle.
As always, have fun and enjoy! -P.
Diffstat (limited to 'slackbook/html/emacs.html')
| -rw-r--r-- | slackbook/html/emacs.html | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/slackbook/html/emacs.html b/slackbook/html/emacs.html new file mode 100644 index 000000000..8c6479cd1 --- /dev/null +++ b/slackbook/html/emacs.html @@ -0,0 +1,173 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head> +<meta name="generator" content="HTML Tidy, see www.w3.org" /> +<title>Emacs</title> +<meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /> +<link rel="HOME" title="Slackware Linux Essentials" href="index.html" /> +<link rel="PREVIOUS" title="Vi Keys" href="vi-keys.html" /> +<link rel="NEXT" title="Buffers" href="emacs-buffers.html" /> +<link rel="STYLESHEET" type="text/css" href="docbook.css" /> +<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> +</head> +<body class="CHAPTER" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#840084" +alink="#0000FF"> +<div class="NAVHEADER"> +<table summary="Header navigation table" width="100%" border="0" cellpadding="0" +cellspacing="0"> +<tr> +<th colspan="3" align="center">Slackware Linux Essentials</th> +</tr> + +<tr> +<td width="10%" align="left" valign="bottom"><a href="vi-keys.html" +accesskey="P">Prev</a></td> +<td width="80%" align="center" valign="bottom"></td> +<td width="10%" align="right" valign="bottom"><a href="emacs-buffers.html" +accesskey="N">Next</a></td> +</tr> +</table> + +<hr align="LEFT" width="100%" /> +</div> + +<div class="CHAPTER"> +<h1><a id="EMACS" name="EMACS"></a>Chapter 17 Emacs</h1> + +<div class="TOC"> +<dl> +<dt><b>Table of Contents</b></dt> + +<dt>17.1 <a href="emacs.html#EMACS-STARTING">Starting emacs</a></dt> + +<dt>17.2 <a href="emacs-buffers.html">Buffers</a></dt> + +<dt>17.3 <a href="emacs-modes.html">Modes</a></dt> + +<dt>17.4 <a href="emacs-basic-editing.html">Basic Editing</a></dt> + +<dt>17.5 <a href="emacs-saving-files.html">Saving Files</a></dt> +</dl> +</div> + +<p>While <tt class="COMMAND">vi</tt> (with its clones) is without a doubt the most +ubiquitous editor on Unix-like systems, Emacs comes in a good second. Instead of using +different “modes”, like <tt class="COMMAND">vi</tt> does, it uses <b +class="KEYCAP">Control</b> and <b class="KEYCAP">Alt</b> key combinations to enter +commands, in much the same way that you can use <b class="KEYCAP">Control</b> and <b +class="KEYCAP">Alt</b> key combinations in a word processor and indeed in many other +applications to execute certain functions. (Though it should be noted that the commands +rarely correspond; so while many modern applications use <b class="KEYCAP">Ctrl</b>-<b +class="KEYCAP">C</b>/ <b class="KEYCAP">X</b>/ <b class="KEYCAP">V</b> for copying, +cutting and pasting, Emacs uses different keys and actually a somewhat different +mechanism for this.)</p> + +<p>Also unlike <tt class="COMMAND">vi</tt>, which is an (excellent) editor and nothing +more, Emacs is a program with near endless capabilities. Emacs is (for the most part) +written in Lisp, which is a very powerful programming language that has the peculiar +property that every program written in it is automatically a Lisp compiler of its own. +This means that the user can extend Emacs, and in fact write completely new programs +“in Emacs”.</p> + +<p>As a result, Emacs is not just an editor anymore. There are many add-on packages for +Emacs available (many come with the program's source) that provide all sorts of +functionality. Many of these are related to text editing, which is after all Emacs' basic +task, but it doesn't stop there. There are for example several spreadsheet programs for +Emacs, there are databases, games, mail and news clients (the top one being Gnus), +etc.</p> + +<p>There are two main versions of Emacs: GNU Emacs (which is the version that comes with +Slackware) and XEmacs. The latter is <span class="emphasis"><i +class="EMPHASIS">not</i></span> a version for Emacs running under X. In fact, both Emacs +and XEmacs run on the console as well as under X. XEmacs was once started as a project to +tidy up the Emacs code. Currently, both versions are being actively developed, and there +is in fact much interaction between the two development teams. For the present chapter, +it is immaterial whether you use Emacs or XEmacs, the differences between them are not +relevant to the normal user.</p> + +<div class="SECT1"> +<h1 class="SECT1"><a id="EMACS-STARTING" name="EMACS-STARTING">17.1 Starting +emacs</a></h1> + +<p>Emacs can be started from the shell by simply typing <tt class="COMMAND">emacs</tt>. +When you are running X, Emacs will (normally) come up with its own X window, usually with +a menu bar at the top, where you can find the most important functions. On startup, Emacs +will first show a welcome message, and then after a few seconds will drop you in the +*scratch* buffer. (See <a href="emacs-buffers.html">Section 17.2</a>.)</p> + +<div class="INFORMALFIGURE"><a id="AEN5971" name="AEN5971"></a> +<p><img src="emacs/emacs.png" /></p> +</div> + +<p>You can also start Emacs on an existing file by typing</p> + +<table border="0" bgcolor="#E0E0E0" width="100%"> +<tr> +<td> +<pre class="SCREEN"> +<samp class="PROMPT">%</samp> <kbd class="USERINPUT">emacs /etc/resolv.conf</kbd> +</pre> +</td> +</tr> +</table> + +<p>This will cause Emacs to load the specified file when it starts up, skipping the +welcome message.</p> + +<div class="SECT2"> +<h2 class="SECT2"><a id="EMACS-COMMAND-KEYS" name="EMACS-COMMAND-KEYS">17.1.1 Command +Keys</a></h2> + +<p>As mentioned above, Emacs uses <b class="KEYCAP">Control</b> and <b +class="KEYCAP">Alt</b> combinations for commands. The usual convention is to write these +with <b class="KEYCAP">C</b>-<b class="KEYCAP">letter</b> and <b class="KEYCAP">M</b>-<b +class="KEYCAP">letter</b>, respectively. So <b class="KEYCAP">C</b>-<b +class="KEYCAP">x</b> means <b class="KEYCAP">Control</b>+<b class="KEYCAP">x</b>, and <b +class="KEYCAP">M</b>-<b class="KEYCAP">x</b> means <b class="KEYCAP">Alt</b>+<b +class="KEYCAP">x</b>. (The letter <b class="KEYCAP">M</b> is used instead of A because +originally the key was not the <b class="KEYCAP">Alt</b> key but the <b +class="KEYCAP">Meta</b> key. The <b class="KEYCAP">Meta</b> key has all but disappeared +from computer keyboards, and in Emacs the <b class="KEYCAP">Alt</b> key has taken over +its function.)</p> + +<p>Many Emacs commands consist of sequences of keys and key combinations. For example, <b +class="KEYCAP">C</b>-<b class="KEYCAP">x</b> <b class="KEYCAP">C</b>-<b +class="KEYCAP">c</b> (that is <b class="KEYCAP">Control</b>-<b class="KEYCAP">x</b> +followed by <b class="KEYCAP">Control</b>-<b class="KEYCAP">c</b> ) quits Emacs, <b +class="KEYCAP">C</b>-<b class="KEYCAP">x</b> <b class="KEYCAP">C</b>-<b +class="KEYCAP">s</b> saves the current file. Keep in mind that <b class="KEYCAP">C</b>-<b +class="KEYCAP">x</b> <b class="KEYCAP">C</b>-<b class="KEYCAP">b</b> is <span +class="emphasis"><i class="EMPHASIS">not</i></span> the same as <b +class="KEYCAP">C</b>-<b class="KEYCAP">x</b> <b class="KEYCAP">b</b>. The former means <b +class="KEYCAP">Control</b>-<b class="KEYCAP">x</b> followed by <b +class="KEYCAP">Control</b>-<b class="KEYCAP">b</b>, while the latter means <b +class="KEYCAP">Control</b>-<b class="KEYCAP">x</b> followed by just '<b +class="KEYCAP">b</b>'.</p> +</div> +</div> +</div> + +<div class="NAVFOOTER"> +<hr align="LEFT" width="100%" /> +<table summary="Footer navigation table" width="100%" border="0" cellpadding="0" +cellspacing="0"> +<tr> +<td width="33%" align="left" valign="top"><a href="vi-keys.html" +accesskey="P">Prev</a></td> +<td width="34%" align="center" valign="top"><a href="index.html" +accesskey="H">Home</a></td> +<td width="33%" align="right" valign="top"><a href="emacs-buffers.html" +accesskey="N">Next</a></td> +</tr> + +<tr> +<td width="33%" align="left" valign="top">Vi Keys</td> +<td width="34%" align="center" valign="top"> </td> +<td width="33%" align="right" valign="top">Buffers</td> +</tr> +</table> +</div> +</body> +</html> + |