From edbf59ed4c62984fbf7668ac6c9f04826102b65f Mon Sep 17 00:00:00 2001
From: jessica-ritter <43350395+jessica-ritter@users.noreply.github.com>
Date: Mon, 22 Jun 2020 11:31:08 -0700
Subject: [PATCH] what happens when prefix is not in string

https://github.com/hashicorp/terraform/blob/master/lang/functions.go#L126 shows that Terraform's Trimprefix comes directly from the standard go library.
When prefix is absent in the go standard library, the original string is returned; https://golang.org/pkg/strings/#TrimPrefix.
---
 website/docs/configuration/functions/trimprefix.html.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/website/docs/configuration/functions/trimprefix.html.md b/website/docs/configuration/functions/trimprefix.html.md
index f2198834f..cc9e8a0e6 100644
--- a/website/docs/configuration/functions/trimprefix.html.md
+++ b/website/docs/configuration/functions/trimprefix.html.md
@@ -13,7 +13,7 @@ description: |-
 earlier, see
 [0.11 Configuration Language: Interpolation Syntax](../../configuration-0-11/interpolation.html).
 
-`trimprefix` removes the specified prefix from the start of the given string.
+`trimprefix` removes the specified prefix from the start of the given string. If the string does not start with the prefix, the string is returned unchanged.
 
 ## Examples
 
@@ -22,6 +22,11 @@ earlier, see
 world
 ```
 
+```
+> trimprefix("helloworld", "cat")
+helloworld
+```
+
 ## Related Functions
 
 * [`trim`](./trim.html) removes characters at the start and end of a string.