diff options
Diffstat (limited to 'misc/slackbook/html/emacs-modes.html')
| -rw-r--r-- | misc/slackbook/html/emacs-modes.html | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/misc/slackbook/html/emacs-modes.html b/misc/slackbook/html/emacs-modes.html new file mode 100644 index 00000000..ed22a354 --- /dev/null +++ b/misc/slackbook/html/emacs-modes.html @@ -0,0 +1,141 @@ +<!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>Modes</title> +<meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /> +<link rel="HOME" title="Slackware Linux Essentials" href="index.html" /> +<link rel="UP" title="Emacs" href="emacs.html" /> +<link rel="PREVIOUS" title="Buffers" href="emacs-buffers.html" /> +<link rel="NEXT" title="Basic Editing" href="emacs-basic-editing.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="SECT1" 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="emacs-buffers.html" +accesskey="P">Prev</a></td> +<td width="80%" align="center" valign="bottom">Chapter 17 Emacs</td> +<td width="10%" align="right" valign="bottom"><a href="emacs-basic-editing.html" +accesskey="N">Next</a></td> +</tr> +</table> + +<hr align="LEFT" width="100%" /> +</div> + +<div class="SECT1"> +<h1 class="SECT1"><a id="EMACS-MODES" name="EMACS-MODES">17.3 Modes</a></h1> + +<p>Every buffer in Emacs has an associated mode. This mode is very different from the +idea of modes in <tt class="COMMAND">vi</tt>: a mode tells you what kind of buffer you +are in. For example, there is text-mode for normal text files, but there are also modes +such as c-mode for editing C programs, sh-mode for editing shell scripts, latex-mode for +editing <b class="APPLICATION">LaTeX</b> files, mail-mode for editing email and news +messages, etc. A mode provides special customizations and functionality that is useful +for the kind of file you are editing. It is even possible for a mode to redefine keys and +key commands. For example, in Text mode, the Tab key simply jumps to the next tab stop, +but in many programming language modes, the <b class="KEYCAP">Tab</b> key indents the +current line according to the depth of the block that line is in.</p> + +<p>The modes mentioned above are called major modes. Each buffer has exactly one major +mode. Additionally, a buffer can have one or more minor modes. A minor mode provides +additional features that may be useful for certain editing tasks. For example, if you hit +the <b class="KEYCAP">INSERT</b> key, you invoke overwrite-mode, which does what you'd +expect. There is also an auto-fill-mode, which is handy in combination with text-mode or +latex-mode: it causes each line that you type to be automatically wrapped once the line +reaches a certain number of characters. Without auto-fill-mode, you have to type <b +class="KEYCAP">M</b>-<b class="KEYCAP">q</b> to fill out a paragraph. (Which you can also +use to reformat a paragraph after you've edited some text in it and it is no longer +nicely filled out.)</p> + +<div class="SECT2"> +<h2 class="SECT2"><a id="EMACS-OPENING-FILES" name="EMACS-OPENING-FILES">17.3.1 Opening +files</a></h2> + +<p>To open a file in Emacs, type</p> + +<table border="0" bgcolor="#E0E0E0" width="100%"> +<tr> +<td> +<pre class="SCREEN"> +<kbd class="USERINPUT">C-x C-f</kbd> +</pre> +</td> +</tr> +</table> + +<p>Emacs will ask you for the name of the file, filling in some default path for you +(which is usually <tt class="FILENAME">~/</tt> ). After you type the filename (you can +use <b class="KEYCAP">Tab</b> completion) and hit <b class="KEYCAP">ENTER</b> , Emacs +will open the file in a new buffer and display that buffer on the screen.</p> + +<div class="NOTE"> +<table class="NOTE" width="100%" border="0"> +<tr> +<td width="25" align="CENTER" valign="TOP"><img src="./imagelib/admon/note.png" +hspace="5" alt="Note" /></td> +<td align="LEFT" valign="TOP"> +<p>Emacs will automatically create a new buffer, it will not load the file into the +current buffer.</p> +</td> +</tr> +</table> +</div> + +<p>In order to create a new file in emacs, you cannot just go typing right away. You +first have to create a buffer for it, and come up with a filename. You do this by typing +<b class="KEYCAP">C</b>-<b class="KEYCAP">x</b> <b class="KEYCAP">C</b>-<b +class="KEYCAP">f</b> and typing a filename, just as if you were opening an existing file. +Emacs will notice that the file you typed doesn't exist, and will create a new buffer and +report “(New file)” in the minibuffer.</p> + +<p>When you type <b class="KEYCAP">C</b>-<b class="KEYCAP">x</b> <b +class="KEYCAP">C</b>-<b class="KEYCAP">f</b> and then enter a directory name instead of a +filename, Emacs will create a new buffer in which you will find a list of all the files +in that directory. You can move the cursor to the file that you are looking for and type +, and Emacs will open it. (There are in fact a lot more actions you can perform here, +such as deleting, renaming and moving files, etc. Emacs is now in dired-mode, which is +basically a simple file manager.)</p> + +<p>When you have typed <b class="KEYCAP">C</b>-<b class="KEYCAP">x</b> <b +class="KEYCAP">C</b>-<b class="KEYCAP">f</b> and suddenly change your mind, you can type +<b class="KEYCAP">C</b>-<b class="KEYCAP">g</b> to cancel the action. <b +class="KEYCAP">C</b>-<b class="KEYCAP">g</b> works almost everywhere where you want to +cancel an action or command that you've started but don't want to finish.</p> +</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="emacs-buffers.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-basic-editing.html" +accesskey="N">Next</a></td> +</tr> + +<tr> +<td width="33%" align="left" valign="top">Buffers</td> +<td width="34%" align="center" valign="top"><a href="emacs.html" +accesskey="U">Up</a></td> +<td width="33%" align="right" valign="top">Basic Editing</td> +</tr> +</table> +</div> +</body> +</html> + |