hugo/docs/content/en/functions/transform/HighlightCodeBlock.md
2023-10-20 09:43:56 +02:00

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---
title: transform.HighlightCodeBlock
description: Highlights code received in context within a code block render hook.
categories: [functions]
keywords: []
menu:
docs:
parent: functions
function:
aliases: []
returnType: highlight.HighlightResult
signatures: ['transform.HighlightCodeBlock CONTEXT [OPTIONS]']
relatedFunctions:
- transform.CanHighlight
- transform.Highlight
- transform.HighlightCodeBlock
---
This function is only useful within a code block render hook.
Given the context passed into a code block render hook, `transform.HighlightCodeBlock` returns a `HighlightResult` object with two methods.
.Wrapped
: (`template.HTML`) Returns highlighted code wrapped in `<div>`, `<pre>`, and `<code>` elements. This is identical to the value returned by the transform.Highlight function.
.Inner
: (`template.HTML`) Returns highlighted code without any wrapping elements, allowing you to create your own wrapper.
```go-html-template
{{ $result := transform.HighlightCodeBlock . }}
{{ $result.Wrapped }}
```
To override the default [highlighting options]:
```go-html-template
{{ $options := merge .Options (dict "linenos" true) }}
{{ $result := transform.HighlightCodeBlock . $options }}
{{ $result.Wrapped }}
```
[highlighting options]: /functions/transform/highlight/#options