Support box->setTitle(v::text::data, context).

Telegram/SourceFiles/boxes/about_box.cpp

@@ -63,7 +63,7 @@ rpl::producer<TextWithEntities> Text3() {
 } // namespace
 
 void AboutBox(not_null<Ui::GenericBox*> box) {
-	box->setTitle(rpl::single(u"Telegram Desktop"_q));
+	box->setTitle(u"Telegram Desktop"_q);
 
 	auto layout = box->verticalLayout();
 

Telegram/SourceFiles/boxes/report_messages_box.cpp

@@ -105,11 +105,9 @@ void ShowReportMessageBox(
 			}
 			if (!result.options.empty() || result.commentOption) {
 				show->show(Box([=](not_null<Ui::GenericBox*> box) {
-					box->setTitle(
-						rpl::single(
-							result.title.isEmpty()
-								? reportInput.optionText
-								: result.title));
+					box->setTitle(result.title.isEmpty()
+						? reportInput.optionText
+						: result.title);
 
 					for (const auto &option : result.options) {
 						const auto button = Ui::AddReportOptionButton(

Telegram/SourceFiles/calls/calls_top_bar.cpp

@@ -149,7 +149,7 @@ DebugInfoBox::DebugInfoBox(QWidget*, base::weak_ptr<Call> call)
 }
 
 void DebugInfoBox::prepare() {
-	setTitle(rpl::single(u"Call Debug"_q));
+	setTitle(u"Call Debug"_q);
 
 	addButton(tr::lng_close(), [this] { closeBox(); });
 	_text = setInnerWidget(

Telegram/SourceFiles/history/view/controls/history_view_forward_panel.cpp

@@ -372,7 +372,7 @@ void EditWebPageOptions(
 		Data::WebPageDraft draft,
 		Fn<void(Data::WebPageDraft)> done) {
 	show->show(Box([=](not_null<Ui::GenericBox*> box) {
-		box->setTitle(rpl::single(u"Link Preview"_q));
+		box->setTitle(u"Link Preview"_q);
 
 		struct State {
 			rpl::variable<Data::WebPageDraft> result;

Telegram/SourceFiles/menu/menu_sponsored.cpp

@@ -318,7 +318,7 @@ void ShowReportSponsoredBox(
 			}
 			if (!result.options.empty()) {
 				show->show(Box([=](not_null<Ui::GenericBox*> box) {
-					box->setTitle(rpl::single(result.title));
+					box->setTitle(result.title);
 
 					for (const auto &option : result.options) {
 						const auto button = Ui::AddReportOptionButton(

Telegram/SourceFiles/support/support_autocomplete.cpp

@@ -495,7 +495,7 @@ ConfirmContactBox::ConfirmContactBox(
 }
 
 void ConfirmContactBox::prepare() {
-	setTitle(rpl::single(u"Confirmation"_q)); // #TODO hard_lang
+	setTitle(u"Confirmation"_q); // #TODO hard_lang
 
 	auto maxWidth = 0;
 	if (_comment) {

Telegram/SourceFiles/support/support_helper.cpp

@@ -102,7 +102,7 @@ EditInfoBox::EditInfoBox(
 }
 
 void EditInfoBox::prepare() {
-	setTitle(rpl::single(u"Edit support information"_q)); // #TODO hard_lang
+	setTitle(u"Edit support information"_q); // #TODO hard_lang
 
 	const auto save = [=] {
 		const auto done = crl::guard(this, [=](bool success) {

Telegram/SourceFiles/ui/boxes/boost_box.cpp

@@ -485,7 +485,7 @@ void BoostBox(
 			+ QMargins(0, st::boostTextSkip, 0, st::boostBottomSkip)));
 
 	const auto current = state->data.current();
-	box->setTitle(rpl::single(QString()));
+	box->setTitle(QString());
 	AddFeaturesList(
 		box->verticalLayout(),
 		data.features,

Telegram/SourceFiles/window/themes/window_theme_editor_block.cpp

@@ -346,7 +346,7 @@ void EditorBlock::activateRow(const Row &row) {
 			});
 			box->addButton(tr::lng_settings_save(), save);
 			box->addButton(tr::lng_cancel(), [=] { box->closeBox(); });
-			box->setTitle(rpl::single(name));
+			box->setTitle(name);
 			box->setWidth(editor->width());
 
 			_context->colorEditor.box = box;