diff --git a/data/syntax/coffee.xml b/data/syntax/coffee.xml
index 758760e..90511c3 100644
--- a/data/syntax/coffee.xml
+++ b/data/syntax/coffee.xml
@@ -1,268 +1,268 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "language.dtd">
 
 <language name="CoffeeScript"
-          version="3"
+          version="4"
           kateversion="3.4"
           section="Scripts"
-          extensions="Cakefile;*.coffee;*.coco"
+          extensions="Cakefile;*.coffee;*.coco;*.cson"
           mimetype="text/x-coffeescript;application/x-coffeescript"
           indenter="python"
           casesensitive="1"
           author="Max Shawabkeh (max99x@gmail.com)"
           license="MIT">
   <highlighting>
     <!-- Built-in constants. -->
     <list name="value_keywords">
       <item>false</item>
       <item>true</item>
       <item>yes</item>
       <item>no</item>
       <item>on</item>
       <item>off</item>
       <item>undefined</item>
       <item>null</item>
       <item>NaN</item>
       <item>Infinity</item>
     </list>
     <!-- Generic keywords. -->
     <list name="keywords">
       <item>return</item>
       <item>break</item>
       <item>continue</item>
       <item>throw</item>
       <item>for</item>
       <item>while</item>
       <item>until</item>
       <item>loop</item>
       <item>if</item>
       <item>else</item>
       <item>unless</item>
       <item>switch</item>
       <item>when</item>
       <item>then</item>
       <item>and</item>
       <item>or</item>
       <item>in</item>
       <item>do</item>
       <item>of</item>
       <item>by</item>
       <item>is</item>
       <item>isnt</item>
       <item>not</item>
       <item>typeof</item>
       <item>delete</item>
       <item>where</item>
       <item>super</item>
       <item>try</item>
       <item>catch</item>
       <item>finally</item>
       <item>try</item>
       <item>catch</item>
       <item>finally</item>
       <item>constructor</item>
     </list>
     <!-- Keywords which are always followed by a class name. -->
     <list name="class_keywords">
       <item>class</item>
       <item>extends</item>
       <item>new</item>
       <item>instanceof</item>
     </list>
     <!-- Reserved words. -->
     <list name="reserved">
       <item>case</item>
       <item>default</item>
       <item>function</item>
       <item>var</item>
       <item>void</item>
       <item>with</item>
       <item>const</item>
       <item>let</item>
       <item>enum</item>
       <item>export</item>
       <item>import</item>
       <item>native</item>
       <item>__hasProp</item>
       <item>__extends</item>
       <item>__slice</item>
       <item>__bind</item>
       <item>__indexOf</item>
     </list>
     <!-- Built-in globals provided in most contexts. -->
     <list name="globals">
       <item>Object</item>
       <item>Number</item>
       <item>Boolean</item>
       <item>Array</item>
       <item>String</item>
       <item>RegExp</item>
       <item>Function</item>
       <item>Date</item>
       <item>Math</item>
       <item>eval</item>
       <item>setInterval</item>
       <item>clearInterval</item>
       <item>setTimeout</item>
       <item>clearTimeout</item>
       <item>isFinite</item>
       <item>isNaN</item>
       <item>parseFloat</item>
       <item>parseInt</item>
       <item>escape</item>
       <item>unescape</item>
       <item>console</item>
       <item>encodeURI</item>
       <item>encodeURIComponent</item>
       <item>decodeURI</item>
       <item>decodeURIComponent</item>
     </list>
     <!-- Built-in globals provided in browser context. -->
     <list name="browser_globals">
       <item>window</item>
       <item>document</item>
       <item>navigator</item>
       <item>location</item>
       <item>history</item>
       <item>screen</item>
       <item>alert</item>
       <item>prompt</item>
     </list>
     <!-- Built-in globals provided in Node.js context. -->
     <list name="nodejs_globals">
       <item>process</item>
       <item>GLOBAL</item>
       <item>require</item>
       <item>exports</item>
     </list>
     <!-- Context-sensitive highlighting rules. -->
     <contexts>
       <!-- Generic code. -->
       <context name="Normal" attribute="Normal" lineEndContext="#stay">
         <DetectSpaces/>
         <!-- Numbers. -->
         <Float attribute="Float" context="#stay"/>
         <Int attribute="Decimal" context="#stay"/>
         <HlCOct attribute="Oct" context="#stay"/>
         <HlCHex attribute="Hex" context="#stay"/>
         <!-- Keywords. -->
         <keyword attribute="Keyword" context="#stay" String="keywords"/>
         <keyword attribute="Keyword" context="Class" String="class_keywords"/>
         <keyword attribute="Value Keywords" context="#stay" String="value_keywords"/>
         <keyword attribute="Reserved" context="#stay" String="reserved"/>
         <!-- Globals. -->
         <keyword attribute="Globals" context="#stay" String="globals"/>
         <keyword attribute="Browser Globals" context="#stay" String="browser_globals"/>
         <keyword attribute="Node.js Globals" context="#stay" String="nodejs_globals"/>
         <!-- Member accessors. -->
         <RegExpr attribute="Accessor" context="#stay" String="(@[_$a-zA-Z][$\w]*|\bthis)\b" insensitive="false"/>
         <!-- Function definitions. Matches an optional argument list followed by a function arrow (normal or fat). -->
         <RegExpr attribute="Function" context="#stay" String="(\((\'[^']*'|&quot;[^&quot;]*&quot;|[^()])*\))?\s*(-|=)&gt;" insensitive="true"/>
         <!-- Generic identifiers. -->
         <RegExpr attribute="Identifier" context="#stay" String="[_$a-z][$\w]*\b" insensitive="true"/>
         <!-- Strings. -->
         <StringDetect attribute="String" context="Heredoc" String="'''" beginRegion="Heredoc"/>
         <StringDetect attribute="String" context="Rich Heredoc" String="&quot;&quot;&quot;" beginRegion="Rich Heredoc"/>
         <DetectChar attribute="String" context="String" char="'"/>
         <DetectChar attribute="String" context="Rich String" char="&quot;"/>
         <!-- Embedded JavaScript. -->
         <DetectChar attribute="Javascript" context="Javascript" char="`" beginRegion="Javascript"/>
         <!-- Comments. -->
         <StringDetect attribute="Comment" context="Multiline Comment" String="###" beginRegion="Comment"/>
         <DetectChar attribute="Comment" context="Comment" char="#"/>
         <!-- Regular expressions. -->
         <StringDetect attribute="Regex" context="Multiline Regex" String="///" beginRegion="Multiline Regex"/>
         <RegExpr attribute="Regex" context="#stay" String="/([^/\\\r\n]|\\.)*/[mig]{0,3}"/>
         <!-- Operators and other non-alphanumeric symbols. -->
         <AnyChar attribute="Symbol" context="#stay" String="():!%&amp;+,-/.*&lt;=&gt;?[]|~^&#59;{}"/>
       </context>
       <!-- Multiline regular expressions. -->
       <context name="Multiline Regex" attribute="Regex" lineEndContext="#stay" noIndentationBasedFolding="1">
         <HlCStringChar attribute="Regex" context="#stay"/>
         <DetectChar attribute="Comment" context="Comment" char="#"/>
         <RegExpr attribute="Regex" context="#pop" String="///[mig]{0,3}" endRegion="Multiline Regex"/>
       </context>
       <!-- Class names. -->
       <context name="Class" attribute="Normal" lineEndContext="#stay">
         <DetectSpaces/>
         <RegExpr attribute="Class" context="#pop" String="[@$:.\w\[\]]+"/>
       </context>
       <!-- Comments. -->
       <context name="Comment" attribute="Comment" lineEndContext="#pop">
         <IncludeRules context="##Alerts_indent"/>
       </context>
       <context name="Multiline Comment" attribute="Comment" lineEndContext="#stay" noIndentationBasedFolding="1">
         <StringDetect attribute="Comment" context="#pop" String="###" endRegion="Comment"/>
         <IncludeRules context="##Alerts_indent"/>
       </context>
       <!-- Single-line strings. -->
       <context name="String" attribute="String" lineEndContext="#stay">
         <HlCStringChar attribute="String" context="#stay"/>
         <DetectChar attribute="String" context="#pop" char="'"/>
       </context>
       <context name="Rich String" attribute="String" lineEndContext="#stay">
         <HlCStringChar attribute="String" context="#stay"/>
         <Detect2Chars attribute="Embedding" context="Embedding" char="#" char1="{"/>
         <DetectChar attribute="String" context="#pop" char="&quot;"/>
       </context>
       <!-- Multi-line strings. -->
       <context name="Heredoc" attribute="String" lineEndContext="#stay" noIndentationBasedFolding="1">
         <HlCStringChar attribute="String" context="#stay"/>
         <StringDetect attribute="String" context="#pop" String="'''" endRegion="Heredoc"/>
       </context>
       <context name="Rich Heredoc" attribute="String" lineEndContext="#stay" noIndentationBasedFolding="1">
         <HlCStringChar attribute="String" context="#stay"/>
         <Detect2Chars attribute="Embedding" context="Embedding" char="#" char1="{"/>
         <StringDetect attribute="String" context="#pop" String="&quot;&quot;&quot;" endRegion="Rich Heredoc"/>
       </context>
       <!-- Expressions embedded in strings. -->
       <context name="Embedding" attribute="Normal" lineEndContext="#stay">
         <DetectChar attribute="Embedding" context="#pop" char="}"/>
       </context>
       <!-- Embedded Javascript. -->
       <context name="Javascript" attribute="Javascript" lineEndContext="#stay" noIndentationBasedFolding="1">
         <DetectChar attribute="Javascript" context="#pop" char="`" endRegion="Javascript"/>
         <!-- NOTE: This hides errors where a backtick is embedded in a JS string. -->
         <IncludeRules context="Normal##JavaScript" includeAttrib="true"/>
       </context>
     </contexts>
     <!-- Style mappings. -->
     <itemDatas>
       <itemData name="Normal" defStyleNum="dsNormal" spellChecking="false"/>
       <itemData name="Identifier" defStyleNum="dsNormal" spellChecking="false"/>
       <itemData name="Keyword" defStyleNum="dsKeyword" spellChecking="false"/>
       <itemData name="Function" defStyleNum="dsFunction" spellChecking="false"/>
       <itemData name="Decimal" defStyleNum="dsDecVal" spellChecking="false"/>
       <itemData name="Float" defStyleNum="dsFloat" spellChecking="false"/>
       <itemData name="Oct" defStyleNum="dsBaseN" spellChecking="false"/>
       <itemData name="Hex" defStyleNum="dsBaseN" spellChecking="false"/>
       <itemData name="String" defStyleNum="dsString" spellChecking="false"/>
       <itemData name="Comment" defStyleNum="dsComment" spellChecking="true"/>
       <itemData name="Symbol" defStyleNum="dsKeyword" spellChecking="false"/>
       <itemData name="Embedding" defStyleNum="dsChar" spellChecking="false"/>
       <itemData name="Accessor" defStyleNum="dsDataType" spellChecking="false"/>
       <itemData name="Class" defStyleNum="dsDataType" spellChecking="false" bold="1"/>
       <itemData name="Javascript" defStyleNum="dsAlert" spellChecking="false" italic="1"/>
       <itemData name="Regex" defStyleNum="dsString" spellChecking="false"/>
       <itemData name="Reserved" defStyleNum="dsAlert" spellChecking="false"/>
       <itemData name="Value Keywords" defStyleNum="dsOthers" spellChecking="false"/>
       <itemData name="Globals" defStyleNum="dsOthers" spellChecking="false"/>
       <!-- Context-sensitive globals - not styled by default. -->
       <itemData name="Browser Globals" defStyleNum="dsNormal" spellChecking="false"/>
       <itemData name="Node.js Globals" defStyleNum="dsNormal" spellChecking="false"/>
     </itemDatas>
   </highlighting>
   <!-- Global settings. -->
   <general>
     <indentation mode="python"/>
     <folding indentationsensitive="1"/>
     <comments>
       <comment name="singleLine" start="#"/>
       <comment name="multiLine" start="###" end="###" region="Comment"/>
     </comments>
     <keywords casesensitive="1" additionalDeliminator="#'"/>
     <emptyLines>
       <emptyLine regexpr="(?:\s+|\s*#.*)"/>
     </emptyLines>
   </general>
 </language>