From 20286a75a22c8889d57033377e12d953f7ce944b Mon Sep 17 00:00:00 2001
From: Sergey Grebenshchikov <sgreben@gmail.com>
Date: Wed, 3 Oct 2018 18:17:20 +0200
Subject: [PATCH] Allow pointer JSON template Value

---
 json.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/json.go b/json.go
index 0f3429a..f894bdd 100644
--- a/json.go
+++ b/json.go
@@ -19,7 +19,10 @@ func (fv *JSON) Help() string {
 // Set is flag.Value.Set
 func (fv *JSON) Set(v string) error {
 	fv.Text = v
-	return json.Unmarshal([]byte(v), &fv.Value)
+	if fv.Value == nil {
+		return json.Unmarshal([]byte(v), &fv.Value)
+	}
+	return json.Unmarshal([]byte(v), fv.Value)
 }
 
 func (fv *JSON) String() string {