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	diff --git a/src/util/translation.h b/src/util/translation.h
	index 101939f102..8d0458ea0a 100644
	--- a/src/util/translation.h
	+++ b/src/util/translation.h
	@@ -1,21 +1,42 @@
	// Copyright (c) 2019 The Bitcoin Core developers
	// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifndef BITCOIN_UTIL_TRANSLATION_H
	#define BITCOIN_UTIL_TRANSLATION_H

	+#include <tinyformat.h>
	+
	#include <functional>
	+#include <utility>
	+
	+/**
	+ * Bilingual messages:
	+ * - in GUI: user's native language + untranslated (i.e. English)
	+ * - in log and stderr: untranslated only
	+ */
	+struct bilingual_str {
	+ std::string original;
	+ std::string translated;
	+};
	+
	+namespace tinyformat {
	+template <typename... Args>
	+bilingual_str format(const bilingual_str &fmt, const Args &... args) {
	+ return bilingual_str{format(fmt.original, args...),
	+ format(fmt.translated, args...)};
	+}
	+} // namespace tinyformat

	/** Translate a message to the native language of the user. */
	const extern std::function<std::string(const char *)> G_TRANSLATION_FUN;

	/**
	* Translation function.
	* If no translation function is set, simply return the input.
	*/
	inline std::string _(const char *psz) {
	return G_TRANSLATION_FUN ? (G_TRANSLATION_FUN)(psz) : psz;
	}

	#endif // BITCOIN_UTIL_TRANSLATION_H