Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

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

Closes #11925

docs/content/en/functions/resources/ExecuteAsTemplate.md

@@ -0,0 +1,62 @@
+---
+title: resources.ExecuteAsTemplate
+description: Returns a resource created from a Go template, parsed and executed with the given context.
+categories: []
+keywords: []
+action:
+  aliases: []
+  related:
+    - functions/resources/FromString
+  returnType: resource.Resource
+  signatures: [resources.ExecuteAsTemplate TARGETPATH CONTEXT RESOURCE]
+---
+
+The `resources.ExecuteAsTemplate` function returns a resource created from a Go template, parsed and executed with the given context, caching the result using the target path as its cache key.
+
+Hugo publishes the resource to the target path when you call its [`Publish`], [`Permalink`], or [`RelPermalink`] methods.
+
+[`publish`]: /methods/resource/publish
+[`permalink`]: /methods/resource/permalink
+[`relpermalink`]: /methods/resource/relpermalink
+
+Let's say you have a CSS file that you wish to populate with values from your site configuration:
+
+{{< code file=assets/css/template.css lang=go-html-template >}}
+body {
+  background-color: {{ site.Params.style.bg_color }};
+  color: {{ site.Params.style.text_color }};
+}
+{{< /code >}}
+
+And your site configuration contains:
+
+{{< code-toggle file=hugo >}}
+[params.style]
+bg_color = '#fefefe'
+text_color = '#222'
+{{< /code-toggle >}}
+
+Place this in your baseof.html template:
+
+```go-html-template
+{{ with resources.Get "css/template.css" }}
+  {{ with resources.ExecuteAsTemplate "css/main.css" $ . }}
+    <link rel="stylesheet" href="{{ .RelPermalink }}">
+  {{ end }}
+{{ end }}
+```
+
+The example above:
+
+1. Captures the template as a resource
+2. Executes the resource as a template, passing the current page in context
+3. Publishes the resource to css/main.css
+
+The result is:
+
+{{< code file=public/css/main.css >}}
+body {
+  background-color: #fefefe;
+  color: #222;
+}
+{{< /code >}}