Merge commit 'e509cac533600cf4fa8382c9cdab78ddd82db688'

docs/content/en/functions/go-template/with.md

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+---
+title: with
+description: Rebinds the context (`.`) within its scope and skips the block if the variable is absent or empty.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: any
+  signatures: [with PIPELINE]
+relatedFunctions:
+  - with
+  - range
+aliases: [/functions/with]
+---
+
+{{% readfile file="/functions/_common/go-template-functions.md" %}}
+
+An alternative way of writing an `if` statement and then referencing the same value is to use `with` instead. `with` rebinds the context (`.`) within its scope and skips the block if the variable is absent, unset or empty.
+
+The set of *empty* values is defined by [the Go templates package](https://golang.org/pkg/text/template/). Empty values include `false`, the number zero, and the empty string.
+
+If you want to render a block if an index or key is present in a slice, array, channel or map, regardless of whether the value is empty, you should use [`isset`](/functions/collections/isset) instead.
+
+The following example checks for a [user-defined site variable](/variables/site/) called `twitteruser`. If the key-value is not set, the following will render nothing:
+
+{{< code file="layouts/partials/twitter.html" >}}
+{{ with .Site.Params.twitteruser }}<span class="twitter">
+<a href="https://twitter.com/{{ . }}" rel="author">
+<img src="/images/twitter.png" width="48" height="48" title="Twitter: {{ . }}"
+ alt="Twitter"></a>
+</span>{{ end }}
+{{< /code >}}