Hugo shortcode for Kotlin Playground

custom_header.html

<script src="https://unpkg.com/kotlin-playground@1" data-selector=".kotlin-code"></script>

kotlin.html

<!-- kotlin -->
<code class="language-kotlin kotlin-code"
    {{- if .Get "compilerVersion" }}data-version="{{ .Get "compilerVersion" }}"{{ end -}}
    {{- if .Get "foldedButton" }}folded-button="{{ .Get "foldedButton" }}"{{ end -}}
    {{- if .Get "height" }}data-output-height="{{ .Get "height" }}"{{ end -}}
    {{- if .Get "highlightOnly" }}data-highlight-only{{ end -}}
    {{- if .Get "jsLibs" }}data-js-libs="{{ .Get "jsLibs" }}"{{ end -}}
    {{- if .Get "targetPlatform" }}data-target-platform="{{ .Get "targetPlatform" }}"{{ end -}}
    {{- if .Get "theme" }}theme="{{ .Get "theme" }}"{{ end -}}
>{{htmlUnescape .Inner}}</code>
<!-- /kotlin -->

thank you for the gist.
I want to ask, how to make hugo to not strip out tag/edge bracket?

for example this code

{{ <kotlin> }}
fun main(args: Array<String>) {
    println("Hello, World!")
}
{{ </kotlin> }}

will result:

fun main(args: Array) {
    println("Hello, World!")
}

because <String> it removed (by hugo)

update: never mind {{htmlUnescape .Inner}} solve the bug

Thanks @hakimrie, gist updated