From 5a48c27630b945dcdc33133defd0241f898ccc52 Mon Sep 17 00:00:00 2001
From: Audrius Karabanovas <audrius@karabanovas.net>
Date: Sat, 4 Apr 2020 22:57:55 +0300
Subject: [PATCH] fix(intrinsics): change Fn::Sub to allow AWS pseudo
 parameters (#275)

Adds `:` character to regex for variable match, allowing all AWS pseudo parameters to be replaced

fixes #274, #202
---
 intrinsics/fnsub.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/intrinsics/fnsub.go b/intrinsics/fnsub.go
index 8e46e8e48a..4a0f8caa0a 100644
--- a/intrinsics/fnsub.go
+++ b/intrinsics/fnsub.go
@@ -36,7 +36,7 @@ func FnSub(name string, input interface{}, template interface{}) interface{} {
 
 	case string:
 		// Look up references for each of the variables
-		regex := regexp.MustCompile(`\$\{([\.0-9A-Za-z]+)\}`)
+		regex := regexp.MustCompile(`\$\{([\.:0-9A-Za-z]+)\}`)
 		variables := regex.FindAllStringSubmatch(val, -1)
 		for _, variable := range variables {