diff --git a/ui/widgets/input_fields.cpp b/ui/widgets/input_fields.cpp
index 067c6bc1..e0640422 100644
--- a/ui/widgets/input_fields.cpp
+++ b/ui/widgets/input_fields.cpp
@@ -959,6 +959,17 @@ const InstantReplaces &InstantReplaces::TextOnly() {
 	return result;
 }
 
+const InstantReplaces &InstantReplaces::Custom() {
+	static const auto result = [] {
+		auto result = InstantReplaces();
+		for (auto i = customReplacesMap.constBegin(), e = customReplacesMap.constEnd(); i != e; ++i) {
+			result.add(i.key(), i.value());
+		}
+		return result;
+	}();
+	return result;
+}
+
 FlatInput::FlatInput(
 	QWidget *parent,
 	const style::FlatInput &st,
@@ -1473,6 +1484,14 @@ void InputField::setInstantReplaces(const InstantReplaces &replaces) {
 	_mutableInstantReplaces = replaces;
 }
 
+void InputField::setInstantReplaces(rpl::producer<InstantReplaces> producer) {
+	std::move(
+		producer
+	) | rpl::start_with_next([=](InstantReplaces replaces) {
+		_mutableInstantReplaces = replaces;
+	}, lifetime());
+}
+
 void InputField::setInstantReplacesEnabled(rpl::producer<bool> enabled) {
 	std::move(
 		enabled
diff --git a/ui/widgets/input_fields.h b/ui/widgets/input_fields.h
index 3617e65a..28170d31 100644
--- a/ui/widgets/input_fields.h
+++ b/ui/widgets/input_fields.h
@@ -43,6 +43,7 @@ struct InstantReplaces {
 
 	static const InstantReplaces &Default();
 	static const InstantReplaces &TextOnly();
+	static const InstantReplaces &Custom();
 
 	int maxLength = 0;
 	Node reverseMap;
@@ -250,6 +251,7 @@ class InputField : public RpWidget {
 	void setAdditionalMargin(int margin);
 
 	void setInstantReplaces(const InstantReplaces &replaces);
+	void setInstantReplaces(rpl::producer<InstantReplaces> producer);
 	void setInstantReplacesEnabled(rpl::producer<bool> enabled);
 	void setMarkdownReplacesEnabled(rpl::producer<bool> enabled);
 	void setExtendedContextMenu(rpl::producer<ExtendedContextMenu> value);