From 330c80b96d8461ad08b8b94d975523a184aac090 Mon Sep 17 00:00:00 2001
From: Solomon Hykes <solomon@docker.com>
Date: Sun, 23 Mar 2014 20:43:14 -0700
Subject: [PATCH] pkg/dockerscript: <!> is not a special character

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Upstream-commit: 4481e80636f282b1164b6e4ef0f4cdec246daed5
Component: engine
---
 components/engine/pkg/dockerscript/scanner/extra.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/engine/pkg/dockerscript/scanner/extra.go b/components/engine/pkg/dockerscript/scanner/extra.go
index 0b0ba1ae03..63302dc523 100644
--- a/components/engine/pkg/dockerscript/scanner/extra.go
+++ b/components/engine/pkg/dockerscript/scanner/extra.go
@@ -14,7 +14,7 @@ func detectIdent(ch rune) bool {
 	if unicode.IsDigit(ch) {
 		return true
 	}
-	if strings.ContainsRune("_:/+-@%^.", ch) {
+	if strings.ContainsRune("_:/+-@%^.!", ch) {
 		return true
 	}
 	return false