use dotty website code highlighting (#2798)

* use dotty website code highlighting

* handle better words with 'def'

Author: bishabosha

_includes/footer.html

@@ -53,6 +53,9 @@
 <!-- Blog search -->
 <script src="{{ site.baseurl }}/resources/js/vendor/jekyll.search.min.js" type="text/javascript"></script>
 
+<!-- Custom Syntax Highlight -->
+<script src="{{ site.baseurl }}/resources/js/hljs-scala3.js" type="text/javascript"></script>
+
 <!-- Custom JavaScript -->
 <script src="{{ site.baseurl }}/resources/js/functions.js" type="text/javascript"></script>
 

_overviews/scala3-book/first-look-at-types.md

@@ -58,6 +58,7 @@ val list: List[Any] = List(
   "a string",
   732,  // an integer
   'c',  // a character
+  '\'', // a character with a backslash escape
   true, // a boolean value
   () => "an anonymous function returning a string"
 )
@@ -76,6 +77,7 @@ Here’s the output of the program:
 a string
 732
 c
+'
 true
 <function>
 ```
@@ -119,7 +121,22 @@ In your code you can also append the characters `L`, `D`, and `F` (and their low
 ```scala
 val x = 1_000L   // val x: Long = 1000
 val y = 2.2D     // val y: Double = 2.2
-val z = 3.3F     // val z: Float = 3.3
+val z = -3.3F    // val z: Float = -3.3
+```
+
+You may also use hexadecimal notation to format integer numbers (normally `Int`, but which also support the
+`L` suffix to specify that they are `Long`):
+
+```scala
+val a = 0xACE    // val a: Int = 2766
+val b = 0xfd_3aL // val b: Long = 64826
+```
+
+Scala supports many different ways to format the same floating point number, e.g.
+```scala
+val q = .25      // val q: Double = 0.25
+val r = 2.5e-1   // val r: Double = 0.25
+val s = .0025e2F // val s: Float = 0.25
 ```
 {% endtab %}
 {% endtabs %}

resources/js/functions.js

@@ -67,6 +67,7 @@ $(document).ready(function() {
   hljs.configure({
     languages: ["scala", "bash"]
   })
+  hljs.registerLanguage("scala", highlightDotty);
   hljs.highlightAll();
 });
 
@@ -431,7 +432,7 @@ $(document).ready(function() {
   function setupTabs(tabs, namespace, defaultValue) {
     const PreferenceStorage = Storage('org.scala-lang.docs.preferences');
     const preferredValue = PreferenceStorage.getPreference(namespace, defaultValue);
-    
+
     activateTab(tabs, preferredValue)
 
     // setup listeners to record new preferred Scala version.