114 lines
2.1 KiB
Markdown
114 lines
2.1 KiB
Markdown
+++
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title = "Hugo highlighting example"
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outputs = ["Reveal"]
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[reveal_hugo]
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theme = "simple"
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+++
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## Hugo Highlighter Presentation
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This is an example of a presentation using Hugo's compile-time syntax highlighter.
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---
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Reveal.js uses Javascript for syntax highlighting (via Highlight.js). This might slow the presentation down if many slides contain code.
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---
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Hugo has a built-in [compile-time highlighter](https://gohugo.io/content-management/syntax-highlighting/), and it's lightning fast too!
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---
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You can enable it using the `highlight` shortcode.
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{{< highlight go >}}
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{{</* highlight go */>}}
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package main
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import "fmt"
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func main() {
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fmt.Println("Hello world!")
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}
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{{</* /highlight */>}}
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{{< /highlight >}}
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---
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Several options are supported, check [Hugo's documentation](https://gohugo.io/content-management/syntax-highlighting/).
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{{< highlight go "style=github,linenos=inline,hl_lines=8" >}}
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{{</* highlight go "style=github,linenos=inline,hl_lines=6" */>}}
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package main
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import "fmt"
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func main() {
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fmt.Println("Hello world!")
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}
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{{</* /highlight */>}}
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{{< / highlight >}}
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---
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You can also use Hugo's highlighter in markdown code fences,
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by putting this in `config.toml`:
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{{< highlight toml "style=github" >}}
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# use Hugo's hl in markdown (with or without a language tag)
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[markup.highlight]
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codeFences = true
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style = "github"
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{{< /highlight >}}
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(This can only be enabled globally for all presentations.)
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---
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- Highlight.js is automatically disabled in code blocks highlighted by Hugo.
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- The two highlighters can be even mixed.
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{{< highlight go >}}
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package main
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import "fmt"
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func main() {
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fmt.Println("Hello world!")
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}
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{{< / highlight >}}
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```go
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package main
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import "fmt"
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func main() {
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fmt.Println("Hello world!")
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}
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```
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---
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If you don't need highlight.js at all, you can prevent it from loading.
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{{< highlight toml "style=github" >}}
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# This works both in config.toml and a presentation's front
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# matter. Default plugins include highlight.js, so disable them
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# and load those that we want manually.
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[params.reveal_hugo]
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load_default_plugins = false
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plugins = [
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"reveal-js/plugin/zoom-js/zoom.js",
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"reveal-js/plugin/notes/notes.js",
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]
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