From e7b1833f53b63f3f43aeebc77f37c348d82d5c04 Mon Sep 17 00:00:00 2001
From: Jesse Szwedko <jesse.szwedko@gmail.com>
Date: Thu, 8 Sep 2016 21:10:46 -0700
Subject: [PATCH] Dereference `Flag`s if they are pointers

When checking if environment variables are set.

We don't support pointer flags currently (though this is the default in
the `v2` branch), but this fixes #516
---
 context.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/context.go b/context.go
index 15570c5..492a742 100644
--- a/context.go
+++ b/context.go
@@ -79,7 +79,12 @@ func (c *Context) IsSet(name string) bool {
 					return
 				}
 
-				envVarValue := reflect.ValueOf(f).FieldByName("EnvVar")
+				val := reflect.ValueOf(f)
+				if val.Kind() == reflect.Ptr {
+					val = val.Elem()
+				}
+
+				envVarValue := val.FieldByName("EnvVar")
 				if !envVarValue.IsValid() {
 					return
 				}