Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

```
git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash
```

Closes #11925

docs/content/en/functions/transform/Highlight.md

@@ -0,0 +1,107 @@
+---
+title: transform.Highlight
+description: Renders code with a syntax highlighter.
+categories: []
+keywords: []
+action:
+  aliases: [highlight]
+  related:
+    - functions/transform/CanHighlight
+    - functions/transform/HighlightCodeBlock
+  returnType: template.HTML
+  signatures: ['transform.Highlight INPUT LANG [OPTIONS]']
+aliases: [/functions/highlight]
+toc: true
+---
+
+The `highlight` function uses the [Chroma] syntax highlighter, supporting over 200 languages with more than 40 available styles.
+
+## Arguments
+
+INPUT
+: The code to highlight.
+
+LANG
+: The language of the code to highlight. Choose from one of the [supported languages]. Case-insensitive.
+
+OPTIONS
+: A map, or comma-separated list, of zero or more [options]. Set default values in [site configuration].
+
+## Options
+
+lineNos
+: Boolean. Default is `false`.\
+Display a number at the beginning of each line.
+
+lineNumbersInTable
+: Boolean. Default is `true`.\
+Render the highlighted code in an HTML table with two cells. The left table cell contains the line numbers. The right table cell contains the code, allowing a user to select and copy the code without line numbers. Irrelevant if `lineNos` is `false`.
+
+anchorLineNos
+: Boolean. Default is `false`.\
+Render each line number as an HTML anchor element, and set the `id` attribute of the surrounding `<span>` to the line number. Irrelevant if `lineNos` is `false`.
+
+lineAnchors
+: String. Default is `""`.\
+When rendering a line number as an HTML anchor element, prepend this value to the `id` attribute of the surrounding `<span>`. This provides unique `id` attributes when a page contains two or more code blocks. Irrelevant if `lineNos` or `anchorLineNos` is `false`.
+
+lineNoStart
+: Integer. Default is `1`.\
+The number to display at the beginning of the first line. Irrelevant if `lineNos` is `false`.
+
+hl_Lines
+: String. Default is `""`.\
+A space-delimited list of lines to emphasize within the highlighted code. To emphasize lines 2, 3, 4, and 7, set this value to `2-4 7`. This option is independent of the `lineNoStart` option.
+
+hl_inline
+: Boolean. Default is `false`.\
+Render the highlighted code without a wrapping container.
+
+style
+: String. Default is `monokai`.\
+The CSS styles to apply to the highlighted code. See the [style gallery] for examples. Case-sensitive.
+
+noClasses
+: Boolean. Default is `true`.\
+Use inline CSS styles instead of an external CSS file. To use an external CSS file, set this value to `false` and [generate the file with the hugo client][hugo client].
+
+tabWidth
+: Integer. Default is `4`.\
+Substitute this number of spaces for each tab character in your highlighted code. Irrelevant if `noClasses` is `false`.
+
+guessSyntax
+: Boolean. Default is `false`.\
+If the `LANG` argument is blank or an unrecognized language, auto-detect the language if possible, otherwise use a fallback language.
+
+{{% note %}}
+Instead of specifying both `lineNos` and `lineNumbersInTable`, you can use the following shorthand notation:
+
+lineNos=inline
+: equivalent to `lineNos=true` and `lineNumbersInTable=false`
+
+lineNos=table
+: equivalent to `lineNos=true` and `lineNumbersInTable=true`
+{{% /note %}}
+
+## Examples
+
+```go-html-template
+{{ $input := `fmt.Println("Hello World!")` }}
+{{ transform.Highlight $input "go" }}
+
+{{ $input := `console.log('Hello World!');` }}
+{{ $lang := "js" }}
+{{ transform.Highlight $input $lang "lineNos=table, style=api" }}
+
+{{ $input := `echo "Hello World!"` }}
+{{ $lang := "bash" }}
+{{ $opts := dict "lineNos" "table" "style" "dracula" }}
+{{ transform.Highlight $input $lang $opts }}
+```
+
+[Chroma]: https://github.com/alecthomas/chroma
+[hugo client]: /commands/hugo_gen_chromastyles
+[options]: #options
+[site configuration]: /getting-started/configuration-markup#highlight
+[style gallery]: https://xyproto.github.io/splash/docs/
+[supported languages]: /content-management/syntax-highlighting#list-of-chroma-highlighting-languages