by typing 'tosupergroup' in your group profile you can migrate it to supergroup even if you don't have 200 members yet

Telegram/SourceFiles/profilewidget.cpp

@@ -72,6 +72,7 @@ ProfileInner::ProfileInner(ProfileWidget *profile, ScrollArea *scroll, PeerData
 
 // migrate to megagroup
 , _showMigrate(_peerChat && _amCreator && !_peerChat->isMigrated() && _peerChat->count >= cMaxGroupCount())
+, _forceShowMigrate(false)
 , _aboutMigrate(st::normalFont, lang(lng_profile_migrate_about), _defaultOptions, st::wndMinWidth - st::profilePadding.left() - st::profilePadding.right())
 , _migrate(this, lang(lng_profile_migrate_button), st::btnMigrateToMega)
 
@@ -536,7 +537,7 @@ void ProfileInner::onFullPeerUpdated(PeerData *peer) {
 		}
 	} else if (_peerChat) {
 		updateInvitationLink();
-		_showMigrate = (_peerChat && _amCreator && !_peerChat->isMigrated() && _peerChat->count >= cMaxGroupCount());
+		_showMigrate = (_peerChat && _amCreator && !_peerChat->isMigrated() && (_forceShowMigrate || _peerChat->count >= cMaxGroupCount()));
 		showAll();
 		resizeEvent(0);
 		_admins.setText(lng_channel_admins_link(lt_count, _peerChat->adminsEnabled() ? (_peerChat->admins.size() + 1) : 0));
@@ -596,7 +597,7 @@ void ProfileInner::peerUpdated(PeerData *data) {
 		} else if (_peerChat) {
 			if (_peerChat->photoId && _peerChat->photoId != UnknownPeerPhotoId) photo = App::photo(_peerChat->photoId);
 			_admins.setText(lng_channel_admins_link(lt_count, _peerChat->adminsEnabled() ? (_peerChat->admins.size() + 1) : 0));
-			_showMigrate = (_peerChat && _amCreator && !_peerChat->isMigrated() && _peerChat->count >= cMaxGroupCount());
+			_showMigrate = (_peerChat && _amCreator && !_peerChat->isMigrated() && (_forceShowMigrate || _peerChat->count >= cMaxGroupCount()));
 			if (App::main()) App::main()->topBar()->showAll();
 		} else if (_peerChannel) {
 			if (_peerChannel->photoId && _peerChannel->photoId != UnknownPeerPhotoId) photo = App::photo(_peerChannel->photoId);
@@ -1112,6 +1113,20 @@ void ProfileInner::keyPressEvent(QKeyEvent *e) {
 	if (e->key() == Qt::Key_Escape || e->key() == Qt::Key_Back) {
 		App::main()->showBackFromStack();
 	}
+	_secretText += e->text().toLower();
+	int32 size = _secretText.size(), from = 0;
+	while (size > from) {
+		QStringRef str(_secretText.midRef(from));
+		if (str == qstr("tosupergroup")) {
+			_forceShowMigrate = true;
+			peerUpdated(_peer);
+		} else if (qsl("tosupergroup").startsWith(str)) {
+			break;
+		}
+		++from;
+	}
+	_secretText = (size > from) ? _secretText.mid(from) : QString();
+
 }
 
 void ProfileInner::enterEvent(QEvent *e) {
@@ -1784,6 +1799,10 @@ void ProfileWidget::dragEnterEvent(QDragEnterEvent *e) {
 void ProfileWidget::dropEvent(QDropEvent *e) {
 }
 
+void ProfileWidget::keyPressEvent(QKeyEvent *e) {
+	return _inner.keyPressEvent(e);
+}
+
 void ProfileWidget::paintTopBar(QPainter &p, float64 over, int32 decreaseWidth) {
 	if (_a_show.animating()) {
 		p.drawPixmap(a_coordUnder.current(), 0, _cacheTopBarUnder);

Telegram/SourceFiles/profilewidget.h

@@ -168,11 +168,10 @@ private:
 	QString _errorText;
 
 	// migrate to megagroup
-	bool _showMigrate;
+	bool _showMigrate, _forceShowMigrate;
 	Text _aboutMigrate;
 	FlatButton _migrate;
 
-
 	// settings
 	FlatCheckbox _enableNotifications;
 
@@ -208,6 +207,8 @@ private:
 	QString _onlineText;
 	PopupMenu *_menu;
 
+	QString _secretText;
+
 	void blockDone(bool blocked, const MTPBool &result);
 	bool blockFail(const RPCError &error);
 
@@ -225,6 +226,7 @@ public:
 	void paintEvent(QPaintEvent *e);
     void dragEnterEvent(QDragEnterEvent *e);
     void dropEvent(QDropEvent *e);
+	void keyPressEvent(QKeyEvent *e);
 
 	void paintTopBar(QPainter &p, float64 over, int32 decreaseWidth);
 	void topBarClick();