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-rw-r--r--modules/migration/messenger.go11
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diff --git a/modules/migration/messenger.go b/modules/migration/messenger.go
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+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package migration
+
+// Messenger is a formatting function similar to i18n.Tr
+type Messenger func(key string, args ...interface{})
+
+// NilMessenger represents an empty formatting function
+func NilMessenger(string, ...interface{}) {}