From f558f7a0c581b5aa5efa6f0281655276868a8313 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Thu, 9 Oct 2014 21:23:49 -0700
Subject: [PATCH] website: document the join function

---
 website/source/docs/configuration/interpolation.html.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/website/source/docs/configuration/interpolation.html.md b/website/source/docs/configuration/interpolation.html.md
index 5679b4ff0a..d2dcb6a0d6 100644
--- a/website/source/docs/configuration/interpolation.html.md
+++ b/website/source/docs/configuration/interpolation.html.md
@@ -61,5 +61,9 @@ The supported built-in functions are:
       in this file are _not_ interpolated. The contents of the file are
       read as-is.
 
+  * `join(delim, list)` - Joins the list with the delimiter. A list is
+      only possible with splat variables from resources with a count
+      greater than one. Example: `join(",", aws_instance.foo.*.id)`
+
   * `lookup(map, key)` - Performs a dynamic lookup into a mapping
       variable.