Fix a few minor bugs.

Author: munificent

asset/style.scss

@@ -477,6 +477,10 @@ footer {
 .codehilite .nl { color: $primary; } // keyword label (private: etc.)
 .codehilite .nt { color: $primary; } // json key
 
+// Hack: Pygments isn't recognizing preprocessor directives, so just color the
+// error like a keyword.
+.codehilite .err { color: $primary; }
+
 // On phone-size screens, shrink all of the text a bit.
 @media only screen and (max-width: 479px) {
   .content {

book/command.markdown

@@ -119,12 +119,12 @@ Now the input handling just delegates to those:
 
 <aside name="null">
 
-Notice how we don't check for `null` here? This assumes each button will have
+Notice how we don't check for `NULL` here? This assumes each button will have
 *some* command wired up to it.
 
 If we want to support buttons that do nothing without having to explicitly check
-for `null`, we can define a command class whose `execute()` method does nothing.
-Then, instead of setting a button handler to `null`, we point it to that object.
+for `NULL`, we can define a command class whose `execute()` method does nothing.
+Then, instead of setting a button handler to `NULL`, we point it to that object.
 This is a pattern called [Null
 Object](http://en.wikipedia.org/wiki/Null_Object_pattern).
 

book/event-queue.markdown

@@ -339,7 +339,7 @@ starts making the speaker wiggle.
 We want to defer that work until later so that `playSound()` can return quickly.
 To do that, we need to *reify* the request to play a sound. We need a little
 structure that stores the details of a pending request so we can keep it around
-until later.
+until later:
 
 ^code play-message
 

book/observer.markdown

@@ -630,7 +630,7 @@ require much knowledge of the other.
 
 ## Observers Today
 
-*Design Patterns* came out in the <span name="90s">90s</span>. Back then,
+*Design Patterns* came out in <span name="90s">1994</span>. Back then,
 object-oriented programming was *the* hot paradigm. Every programmer on Earth
 wanted to "Learn OOP in 30 Days," and middle managers paid them based on the
 number of classes they created. Engineers judged their mettle by the depth of

code/cpp/service-locator.h

@@ -78,7 +78,6 @@ class LoggedAudio : public Audio
     wrapped_.stopAllSounds();
   }
 
-
 private:
   void log(const char* message)
   {

code/cpp/update-method.h

@@ -102,7 +102,7 @@ namespace UpdateMethod
       //^statues
     }
   }
-  
+
   namespace KeepInMind
   {
     struct Entity
@@ -113,7 +113,7 @@ namespace UpdateMethod
     };
 
     static const int MAX_ENTITIES = 10;
-    
+
     void refreshGame() {}
 
     void skipAdded()
@@ -146,7 +146,7 @@ namespace UpdateMethod
   namespace SampleCode
   {
     static const int MAX_ENTITIES = 10;
-    
+
     //^entity-class
     class Entity
     {
@@ -179,7 +179,7 @@ namespace UpdateMethod
       {}
 
       void gameLoop();
-      
+
     private:
       Entity* entities_[MAX_ENTITIES];
       int numEntities_;
@@ -192,7 +192,7 @@ namespace UpdateMethod
       while (true)
       {
         // Handle user input...
-        
+
         // Update each entity.
         //^update-component-entities
         for (int i = 0; i < numEntities_; i++)
@@ -213,7 +213,7 @@ namespace UpdateMethod
       Skeleton()
       : patrollingLeft_(false)
       {}
-      
+
       virtual void update()
       {
         if (patrollingLeft_)
@@ -247,7 +247,7 @@ namespace UpdateMethod
         if (++frames_ == delay_)
         {
           shootLightning();
-          
+
           // Reset the timer.
           frames_ = 0;
         }
@@ -256,7 +256,7 @@ namespace UpdateMethod
     private:
       int frames_;
       int delay_;
-      
+
       void shootLightning()
       {
         // Shoot the lightning...
@@ -310,7 +310,8 @@ namespace UpdateMethod
       else
       {
         x += elapsed;
-        if (x >= 100) {
+        if (x >= 100)
+        {
           patrollingLeft_ = true;
           x = 100 - (x - 100);
         }

html/command.html

@@ -177,11 +177,11 @@ <h2><a href="#configuring-input" name="configuring-input">Configuring Input</a><
 
 <aside name="null">
 
-<p>Notice how we don&#8217;t check for <code>null</code> here? This assumes each button will have
+<p>Notice how we don&#8217;t check for <code>NULL</code> here? This assumes each button will have
 <em>some</em> command wired up to it.</p>
 <p>If we want to support buttons that do nothing without having to explicitly check
-for <code>null</code>, we can define a command class whose <code>execute()</code> method does nothing.
-Then, instead of setting a button handler to <code>null</code>, we point it to that object.
+for <code>NULL</code>, we can define a command class whose <code>execute()</code> method does nothing.
+Then, instead of setting a button handler to <code>NULL</code>, we point it to that object.
 This is a pattern called <a href="http://en.wikipedia.org/wiki/Null_Object_pattern">Null
 Object</a>.</p>
 </aside>

html/event-queue.html

@@ -338,7 +338,7 @@ <h2><a href="#sample-code" name="sample-code">Sample Code</a></h2>
 <p>We want to defer that work until later so that <code>playSound()</code> can return quickly.
 To do that, we need to <em>reify</em> the request to play a sound. We need a little
 structure that stores the details of a pending request so we can keep it around
-until later.</p>
+until later:</p>
 <div class="codehilite"><pre><span class="k">struct</span> <span class="n">PlayMessage</span>
 <span class="p">{</span>
   <span class="n">SoundId</span> <span class="n">id</span><span class="p">;</span>

html/observer.html

@@ -687,7 +687,7 @@ <h3><a href="#what's-going-on" name="what's-going-on">What&#8217;s going on?</a>
 minimum of communication between them so that working on either one doesn&#8217;t
 require much knowledge of the other.</p>
 <h2><a href="#observers-today" name="observers-today">Observers Today</a></h2>
-<p><em>Design Patterns</em> came out in the <span name="90s">90s</span>. Back then,
+<p><em>Design Patterns</em> came out in <span name="90s">1994</span>. Back then,
 object-oriented programming was <em>the</em> hot paradigm. Every programmer on Earth
 wanted to &#8220;Learn OOP in 30 Days,&#8221; and middle managers paid them based on the
 number of classes they created. Engineers judged their mettle by the depth of

html/service-locator.html

@@ -368,7 +368,6 @@ <h3><a href="#logging-decorator" name="logging-decorator">Logging decorator</a><
     <span class="n">wrapped_</span><span class="p">.</span><span class="n">stopAllSounds</span><span class="p">();</span>
   <span class="p">}</span>
 
-
 <span class="nl">private:</span>
   <span class="kt">void</span> <span class="n">log</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span><span class="o">*</span> <span class="n">message</span><span class="p">)</span>
   <span class="p">{</span>