Update recommended Emacs version to the newly-released 24.1.

Note that I still need to update the "Color themes", "Installing third-
party elisp packages", and (maybe) "Installing packages from github"
sections in Chapter 7 to use an example other than the color-theme
package, which is now obsolete as Emacs 24 has color themes built in.

contribute_emacs.haml

@@ -110,7 +110,7 @@ documentation string.
 %h2 Making a patch in the 21st century[[2]]
 
 Ideally you'd make the patch against the latest (unreleased) version of the
-Emacs source code, instead of version 23.3. Someone else might even have fixed
+Emacs source code, instead of version 24.1. Someone else might even have fixed
 your problem already! The Emacs source code is hosted at [savannah.gnu.org](
 http://savannah.gnu.org/projects/emacs) and you can grab the source code from
 the official Bazaar repository:

contribute_emacs.html

@@ -13,7 +13,7 @@
         <h1>How to learn Emacs</h1>
         <p>By <a href="http://david.rothlis.net">David Röthlisberger</a>.<br/>
         Comments welcome at <a href="&#x6d;&#x61;&#x69;&#108;&#x74;&#x6f;&#x3a;&#100;&#97;&#118;&#105;&#x64;&#64;&#x72;&#x6f;&#116;&#x68;&#x6c;&#105;&#115;&#46;&#110;&#x65;&#x74;?subject=How%20to%20learn%20Emacs">&#100;&#97;&#x76;&#x69;&#x64;&#64;&#114;&#111;&#x74;&#x68;&#x6c;&#x69;&#x73;&#46;&#x6e;&#x65;&#x74;</a>.<br/>
-        Last updated 8 Apr 2012.</p>
+        Last updated 24 Jun 2012.</p>
       </div>
       <div id='toc'>
         <!-- Table of Contents -->
@@ -99,7 +99,7 @@ <h2>Making a patch, the 1980s way</h2>
 <div class='echoarea'><p>&nbsp;</p></div>
 <h2>Making a patch in the 21st century<a id='fnref2' href='#fn2' class='footnote'>[2]</a></h2>
 <p>Ideally you&rsquo;d make the patch against the latest (unreleased) version of the
-Emacs source code, instead of version 23.3. Someone else might even have fixed
+Emacs source code, instead of version 24.1. Someone else might even have fixed
 your problem already! The Emacs source code is hosted at <a href="http://savannah.gnu.org/projects/emacs">savannah.gnu.org</a> and you can grab the source code from
 the official Bazaar repository:</p>
 <div class='do'>

customize_colors.haml

@@ -167,6 +167,10 @@ and find the `provide` form near the bottom).
 
 %h2#themes Color themes
 
+*Note: This section and the next, which deal with the `color-theme` package,
+were written for Emacs 23. `color-theme` is obsolete in Emacs 24, so I need
+to find a better example for installing third-party packages.*
+
 Maybe you already have a favourite color theme, like [Zenburn](
 http://slinky.imukuppi.org/zenburnpage/) or [Solarized](
 http://ethanschoonover.com/solarized). There are Emacs implementations
@@ -175,14 +179,11 @@ https://github.com/sellout/emacs-color-theme-solarized)) built on top of the
 [`color-theme`]( http://www.nongnu.org/color-theme/) minor mode. `color-theme`
 is a third-party package; it doesn't come with Emacs.
 
-Note that Emacs 24, which hasn't been officially released yet, provides a
-built-in mechanism for defining multiple color themes. Nevertheless, I'll walk
-you through the process of installing third-party packages using `color-theme`
-and the Solarized theme as examples.
-
-/ TODO: Find a better example once Emacs 24 is released.
+Note that Emacs 24 provides a built-in mechanism for defining multiple color
+themes. Nevertheless, I'll walk you through the process of installing
+third-party packages using `color-theme` and the Solarized theme as examples.
 
-Emacs 24 will also come with a package management system, so--as long as the
+Emacs 24 also comes with a package management system, so--as long as the
 package's author has taken advantage of the new mechanism--the manual
 installation procedure described below will not be necessary either.
 

customize_colors.html

@@ -13,7 +13,7 @@
         <h1>How to learn Emacs</h1>
         <p>By <a href="http://david.rothlis.net">David Röthlisberger</a>.<br/>
         Comments welcome at <a href="&#x6d;&#x61;&#x69;&#108;&#x74;&#x6f;&#x3a;&#100;&#97;&#118;&#105;&#x64;&#64;&#x72;&#x6f;&#116;&#x68;&#x6c;&#105;&#115;&#46;&#110;&#x65;&#x74;?subject=How%20to%20learn%20Emacs">&#100;&#97;&#x76;&#x69;&#x64;&#64;&#114;&#111;&#x74;&#x68;&#x6c;&#x69;&#x73;&#46;&#x6e;&#x65;&#x74;</a>.<br/>
-        Last updated 8 Apr 2012.</p>
+        Last updated 24 Jun 2012.</p>
       </div>
       <div id='toc'>
         <!-- Table of Contents -->
@@ -166,17 +166,20 @@ <h2 id='diff'>diff-mode</h2>
 but to double-check: <code><a class='glossary' href='glossary.html#keys'>C-h f diff-mode</a></code>, follow the link to <code>diff-mode.el.gz</code>,
 and find the <code>provide</code> form near the bottom).</p>
 <h2 id='themes'>Color themes</h2>
+<p><em>Note: This section and the next, which deal with the <code>color-theme</code> package,
+were written for Emacs 23. <code>color-theme</code> is obsolete in Emacs 24, so I need
+to find a better example for installing third-party packages.</em></p>
+
 <p>Maybe you already have a favourite color theme, like <a href="http://slinky.imukuppi.org/zenburnpage/">Zenburn</a> or <a href="http://ethanschoonover.com/solarized">Solarized</a>. There are Emacs implementations
 (<a href="https://github.com/bbatsov/zenburn-emacs">Zenburn</a>, <a href="https://github.com/sellout/emacs-color-theme-solarized">Solarized</a>) built on top of the
 <a href="http://www.nongnu.org/color-theme/"><code>color-theme</code></a> <a class='glossary' href='glossary.html#minormode'>minor mode</a>. <code>color-theme</code>
 is a third-party package; it doesn&rsquo;t come with Emacs.</p>
 
-<p>Note that Emacs 24, which hasn&rsquo;t been officially released yet, provides a
-built-in mechanism for defining multiple color themes. Nevertheless, I&rsquo;ll walk
-you through the process of installing third-party packages using <code>color-theme</code>
-and the Solarized theme as examples.</p>
-<!-- TODO: Find a better example once Emacs 24 is released. -->
-<p>Emacs 24 will also come with a package management system, so&mdash;as long as the
+<p>Note that Emacs 24 provides a built-in mechanism for defining multiple color
+themes. Nevertheless, I&rsquo;ll walk you through the process of installing
+third-party packages using <code>color-theme</code> and the Solarized theme as examples.</p>
+
+<p>Emacs 24 also comes with a package management system, so&mdash;as long as the
 package&rsquo;s author has taken advantage of the new mechanism&mdash;the manual
 installation procedure described below will not be necessary either.</p>
 <h2 id='packages'>Installing third-party elisp packages</h2>

install.haml

@@ -1,6 +1,6 @@
 %h1 Install the right Emacs
 
-Install the latest release of [GNU Emacs]( http://www.gnu.org/s/emacs/) (23.4
+Install the latest release of [GNU Emacs]( http://www.gnu.org/s/emacs/) (24.1
 as of this writing). Not XEmacs, not EmacsW32, not AquaMacs, not Carbon Emacs.
 
 %h2 Linux
@@ -9,8 +9,7 @@ Emacs is probably already installed; if not, use your distro's package manager
 (yum, apt-get, etc).
 
 If your distro only has older Emacs packages, you could try finding a
-third-party package repository (such as those listed in the ["Emacs
-24"](#emacs24) section below), or [building the latest version from source](
+third-party package repository, or [building the latest version from source](
 http://www.gnu.org/software/emacs/emacs-faq.html#Compiling-and-installing-Emacs)
 if you are comfortable doing so.
 
@@ -55,12 +54,3 @@ http://www.gnu.org/software/emacs/windows/) and the (often outdated)
 If you have existing Emacs customizations in a `.emacs` file or `.emacs.d`
 directory, you should move it out of the way if you want your Emacs behavior to
 exactly mirror the examples in this guide.
-
-%h2#emacs24 Emacs 24
-
-Version 24 has not been officially released but is reportedly very stable. Use
-at your own risk. Pre-built packages from the latest source are available for
-[Debian]( http://emacs.naquadah.org/), [Ubuntu](
-https://launchpad.net/~cassou/+archive/emacs), [OS X](
-http://emacsformacosx.com/builds#Pretests), and [Windows](
-http://code.google.com/p/emacs-for-windows/).

install.html

@@ -13,7 +13,7 @@
         <h1>How to learn Emacs</h1>
         <p>By <a href="http://david.rothlis.net">David Röthlisberger</a>.<br/>
         Comments welcome at <a href="&#x6d;&#x61;&#x69;&#108;&#x74;&#x6f;&#x3a;&#100;&#97;&#118;&#105;&#x64;&#64;&#x72;&#x6f;&#116;&#x68;&#x6c;&#105;&#115;&#46;&#110;&#x65;&#x74;?subject=How%20to%20learn%20Emacs">&#100;&#97;&#x76;&#x69;&#x64;&#64;&#114;&#111;&#x74;&#x68;&#x6c;&#x69;&#x73;&#46;&#x6e;&#x65;&#x74;</a>.<br/>
-        Last updated 14 Apr 2012.</p>
+        Last updated 24 Jun 2012.</p>
       </div>
       <div id='toc'>
         <!-- Table of Contents -->
@@ -54,15 +54,14 @@ <h1>How to learn Emacs</h1>
     <div id='content2'>
       <!-- Contents -->
 <h1>Install the right Emacs</h1>
-<p>Install the latest release of <a href="http://www.gnu.org/s/emacs/">GNU Emacs</a> (23.4
+<p>Install the latest release of <a href="http://www.gnu.org/s/emacs/">GNU Emacs</a> (24.1
 as of this writing). Not XEmacs, not EmacsW32, not AquaMacs, not Carbon Emacs.</p>
 <h2>Linux</h2>
 <p>Emacs is probably already installed; if not, use your distro&rsquo;s package manager
 (yum, apt-get, etc).</p>
 
 <p>If your distro only has older Emacs packages, you could try finding a
-third-party package repository (such as those listed in the <a href="#emacs24">&ldquo;Emacs
-24&rdquo;</a> section below), or <a href="http://www.gnu.org/software/emacs/emacs-faq.html#Compiling-and-installing-Emacs">building the latest version from source</a>
+third-party package repository, or <a href="http://www.gnu.org/software/emacs/emacs-faq.html#Compiling-and-installing-Emacs">building the latest version from source</a>
 if you are comfortable doing so.</p>
 <h2>OS X</h2>
 <p>If you use <a href="http://www.macports.org/">macports</a>, install the <code>emacs-app</code> port,
@@ -98,10 +97,6 @@ <h2>Remove any existing .emacs configuration</h2>
 <p>If you have existing Emacs customizations in a <code>.emacs</code> file or <code>.emacs.d</code>
 directory, you should move it out of the way if you want your Emacs behavior to
 exactly mirror the examples in this guide.</p>
-<h2 id='emacs24'>Emacs 24</h2>
-<p>Version 24 has not been officially released but is reportedly very stable. Use
-at your own risk. Pre-built packages from the latest source are available for
-<a href="http://emacs.naquadah.org/">Debian</a>, <a href="https://launchpad.net/~cassou/+archive/emacs">Ubuntu</a>, <a href="http://emacsformacosx.com/builds#Pretests">OS X</a>, and <a href="http://code.google.com/p/emacs-for-windows/">Windows</a>.</p>
       <!-- Contents -->
       <p class='next'><a rel='next' href='tutorial.html'>Next: The very basics</a></p>
     </div>