From 7c0ed886ef0e4f88f60025ff69abdfb58e11bf36 Mon Sep 17 00:00:00 2001
From: Darya Kamynina <darya.kamynina@iqoption.com>
Date: Thu, 10 Feb 2022 10:08:29 +0300
Subject: [PATCH] Populate tag name customization

---
 bind.go   | 6 +++++-
 option.go | 7 +++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/bind.go b/bind.go
index 53a9748..f0ab6fa 100644
--- a/bind.go
+++ b/bind.go
@@ -361,7 +361,11 @@ func (b bind) bind(fs FlagSet, v interface{}) (err error) {
 		// short name.
 		if !tag.HasExplicitName ||
 			(usePFlag && tag.Name == tag.ShortName) {
-			tag.Name = FromCamelCase(structField.Name, Separator)
+			if b.NamePopulator == nil {
+				tag.Name = FromCamelCase(structField.Name, Separator)
+			} else {
+				tag.Name = b.NamePopulator(structField.Name)
+			}
 		}
 
 		fieldV := val.Field(i)
diff --git a/option.go b/option.go
index 40317ec..34ed942 100644
--- a/option.go
+++ b/option.go
@@ -11,6 +11,7 @@ func newBind(opts ...Option) bind {
 type bind struct {
 	Prefix        string
 	NoAutoFlatten bool
+	NamePopulator func(fieldName string) string
 }
 
 func (b bind) Option() Option {
@@ -41,3 +42,9 @@ func NoAutoFlatten() Option {
 		b.NoAutoFlatten = true
 	}
 }
+
+func NamePopulator(fn func(fieldName string) string) Option {
+	return func(b *bind) {
+		b.NamePopulator = fn
+	}
+}