lang/etc/kate_highlighting_lang.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE language SYSTEM "language.dtd">
<language name="langexp" version="1" kateversion="5.0" section="Sources" extensions="*.langexp" mimetype="text/langexp" priority="5">
<highlighting>
    <list name="controlflow">
      <item>if</item>
      <item>elif</item>
      <item>else</item>
      <item>for</item>
      <item>do</item>
      <item>break</item>
      <item>continue</item>
      <item>return</item>
      <item>bring</item>
    </list>
    <list name="keywords">
        <item>import</item>
        <item>let</item>
        <item>var</item>
        <item>lambda</item>
        <item>exec</item>
        <item>test</item>
        <item>example</item>
    </list>
    <list name="references">
        <item>out</item>
        <item>in</item>
        <item>ref</item>
        <item>const</item>
    </list>
    <list name="constants">
        <item>null</item>
        <item>true</item>
        <item>false</item>
        <item>this</item>
        <item>This</item>
    </list>
	<contexts>
        <context attribute="Normal Text" lineEndContext="#stay" name="Normal">
            <DetectSpaces/>
            <keyword String="controlflow" attribute="Control Flow" context="#stay"/>
            <keyword String="keywords" attribute="Keyword" context="#stay"/>
            <keyword String="references" attribute="Reference" context="#stay"/>
            <keyword String="constants" attribute="Constant" context="#stay"/>

            <Detect2Chars char="/" char1="/" attribute="Comment" context="Comment"/>
            <RegExpr String="^\: [^\n]*" attribute="Documentation" context="#stay"/>
            <RegExpr String="^\@[a-z_][a-z0-9_]* " attribute="Annotation" context="AnnotationDocumentation"/>

            <Detect2Chars char="(" char1=")" attribute="Constant" context="#stay"/>

            <RegExpr String="^#![^\n]*" attribute="Comment" context="#stay"/>

            <RegExpr String="\@[a-z_][a-z0-9_]*(?![a-z0-9_])" attribute="Annotation" context="#stay"/>

            <RegExpr String="((\:\=)|(\=\:)|\%|\\|\$|(\:\:)|^)(?![a\+\\\-\*/%\^\!\?&amp;,&lt;>=\.])" attribute="Keyword" context="#stay"/>

            <RegExpr String="((\-\>)|(&lt;\-)|(&lt;\>)|(\-\-))(?![a\+\\\-\*/%\^\!\?&amp;,&lt;>=\.])" attribute="Reference" context="#stay"/>

            <RegExpr String="(\@|\:|(\?\?)|(\!\!)|(\=\>)|(\!\!\=\>))(?![a\+\\\-\*/%\^\!\?\|&amp;,&lt;>=\.])" attribute="Control Flow" context="#stay"/>

            <RegExpr String="\b[0-9]+\.[0-9]+f?\b" attribute="Float" context="#stay"/>
            <RegExpr String="''([^\\\/]|(\\.))''u?" attribute="Character" context="#stay"/>
            <RegExpr String="\b[0-9]+[il]?\b" attribute="Decimal" context="#stay"/>
            <RegExpr String="&quot;([^\\&quot;]|(\\.))*&quot;u?" attribute="String" context="#stay" />

            <RegExpr String="((?&lt;![\+\\\-\*/%\^\!\?\|&amp;,&lt;>=\.])((\.+)|([\+\\\-\*/%\^\!\?\|&amp;,&lt;>=]+\.?\.?\.?)))|(\|)|(\[\[)|(\]\])|(\(\()|(\)\))" attribute="Operator" context="#stay"/>

            <RegExpr String="([a-z_][a-z0-9_]*\.)*(([a-z_][a-z0-9_]*)|_)(?![a-z0-9_])" attribute="Name" context="#stay"/>

            <RegExpr String="([a-z_][a-z0-9_]*\.)*[A-Z][a-zA-Z0-9]*(?![a-zA-Z0-9])" attribute="Type" context="#stay"/>

            <RegExpr String="'(([a-z_][a-z0-9_]*(?![a-z0-9_]))|([A-Z][a-zA-Z0-9]*)(?![a-zA-Z0-9]))" attribute="ArgumentTypeOrName" context="#stay"/>

            <RegExpr String="([a-z_][a-z0-9_]*\.)*#[A-Z][a-zA-Z0-9]*(?![a-zA-Z0-9])" attribute="Typeclass" context="#stay"/>

            <DetectChar char="(" attribute="Symbol" context="#stay" beginRegion="OpenBracket"/>
            <DetectChar char=")" attribute="Symbol" context="#stay" endRegion="OpenBracket"/>

            <DetectChar char="[" attribute="Symbol" context="#stay" beginRegion="AngledBracket"/>
            <DetectChar char="]" attribute="Symbol" context="#stay" endRegion="AngledBracket"/>

            <DetectChar char="{" attribute="Symbol" context="#stay" beginRegion="CurlyBrace"/>
            <DetectChar char="}" attribute="Symbol" context="#stay" endRegion="CurlyBrace"/>

            <IncludeRules context="FindComments" />
        </context>

        <context name="FindComments" attribute="Normal Text" lineEndContext="#pop">
            <Detect2Chars attribute="Comment" context="MatchComment" char="/" char1="/" lookAhead="true"/>
            <Detect2Chars attribute="Comment" context="MatchComment" char="/" char1="*" lookAhead="true" />
        </context>

        <context name="MatchComment" attribute="Normal Text" lineEndContext="#pop" fallthrough="true" fallthroughContext="#pop">
            <Detect2Chars attribute="Comment" context="#pop!Comment" char="/" char1="/"/>
            <Detect2Chars attribute="Comment" context="#pop!MultiLine Comment" char="/" char1="*" beginRegion="Comment"/>
        </context>

        <context attribute="Comment" lineEndContext="#pop" name="Comment">
            <DetectSpaces />
            <IncludeRules context="##Comments" />
            <DetectIdentifier />
        </context>

        <context attribute="Comment" lineEndContext="#stay" name="MultiLine Comment">
            <DetectSpaces />
            <Detect2Chars attribute="Comment" context="#pop" char="*" char1="/" endRegion="Comment"/>
            <IncludeRules context="##Comments" />
            <DetectIdentifier />
        </context>

        <context attribute="Documentation" lineEndContext="#pop" name="AnnotationDocumentation">
        </context>
    </contexts>
    <itemDatas>
        <itemData name="Normal Text" defStyleNum="dsNormal"/>
        <itemData name="Control Flow" defStyleNum="dsControlFlow" spellChecking="false"/>
        <itemData name="Keyword" defStyleNum="dsKeyword" spellChecking="false"/>
        <itemData name="Reference" defStyleNum="dsFunction" spellChecking="false"/>
        <itemData name="Type" defStyleNum="dsDataType" spellChecking="false"/>
        <itemData name="ArgumentTypeOrName" defStyleNum="dsVariable" spellChecking="false"/>
        <itemData name="Constructor" defStyleNum="dsConstant" spellChecking="false"/>
        <itemData name="Typeclass" defStyleNum="dsAttribute" spellChecking="false"/>
        <itemData name="Name" defStyleNum="dsNormal" spellChecking="false"/>
        <itemData name="Constant" defStyleNum="dsConstant" spellChecking="false"/>
        <itemData name="Annotation" defStyleNum="dsAttribute" spellChecking="false"/>
        <itemData name="Comment" defStyleNum="dsComment"/>
        <itemData name="Documentation" defStyleNum="dsDocumentation"/>
        <itemData name="Decimal" defStyleNum="dsDecVal"/>
        <itemData name="Float" defStyleNum="dsFloat"/>
        <itemData name="String" defStyleNum="dsString"/>
        <itemData name="Escape" defStyleNum="dsSpecialChar"/>
        <itemData name="Character" defStyleNum="dsChar"/>
        <itemData name="Operator" defStyleNum="dsOperator"/>
        <itemData name="Symbol" defStyleNum="dsNormal"/>
        <itemData name="Error" defStyleNum="dsError"/>
    </itemDatas>
</highlighting>
<general>
    <comments>
        <comment name="singleLine" start="//" />
        <comment name="multiLine" start="/*" end="*/" region="Comment" />
    </comments>
    <keywords casesensitive="1" />
</general>
</language>