diff -r d9073c13dc98 -r 37db42ad451a sources/interface.cpp
--- a/sources/interface.cpp	Wed Jul 20 15:03:37 2016 +0300
+++ b/sources/interface.cpp	Wed Jul 20 17:56:40 2016 +0300
@@ -513,7 +513,7 @@
 		break;
 	}
 
-	if (not text.is_empty())
+	if (not text.isEmpty())
 		text += " | ";
 
 	text += "Ctrl+N to connect, Ctrl+Q to ";
@@ -717,7 +717,7 @@
 	case '\b':
 		if (m_cursorPosition > 0)
 		{
-			getEditableInput().remove_at(--m_cursorPosition);
+			getEditableInput().removeAt(--m_cursorPosition);
 			m_needInputRender = true;
 		}
 		break;
@@ -726,7 +726,7 @@
 	case 'D' - 'A' + 1: // readline ^D
 		if (m_cursorPosition < getCurrentInput().length())
 		{
-			getEditableInput().remove_at(m_cursorPosition);
+			getEditableInput().removeAt(m_cursorPosition);
 			m_needInputRender = true;
 		}
 		break;
@@ -758,7 +758,7 @@
 		break;
 
 	case 'Y' - 'A' + 1: // readline ^Y - paste previously deleted text
-		if (not m_pasteBuffer.is_empty())
+		if (not m_pasteBuffer.isEmpty())
 		{
 			getEditableInput().insert(m_cursorPosition, m_pasteBuffer);
 			m_cursorPosition += m_pasteBuffer.length();
@@ -806,7 +806,7 @@
 			break;
 
 		case INPUTSTATE_PASSWORD:
-			if (m_inputState == INPUTSTATE_PASSWORD and not getCurrentInput().is_empty())
+			if (m_inputState == INPUTSTATE_PASSWORD and not getCurrentInput().isEmpty())
 			{
 				m_session.disconnect();
 				m_session.set_password(getCurrentInput());
@@ -976,14 +976,14 @@
 			strftime(timestamp, sizeof timestamp, "[%H:%M:%S] ", localtime(&now));
 
 			for (char ch : String(timestamp))
-				m_outputLines.last().add_char(ch);
+				m_outputLines.last().addChar(ch);
 		}
 
 		// Remove some lines if there's too many of them. 20,000 should be enough, I hope.
 		while (m_outputLines.size() > 20000)
 			m_outputLines.remove_at(0);
 
-		m_outputLines.last().add_char(ch);
+		m_outputLines.last().addChar(ch);
 	}
 
 	m_needOutputRender = true;
@@ -1020,7 +1020,7 @@
 	for (const String& name : names)
 	{
 		ColoredLine coloredname;
-		coloredname.add_string(name);
+		coloredname.addString(name);
 		coloredname.finalize();
 		m_playerNames.append(coloredname);
 	}
@@ -1034,7 +1034,7 @@
 {
 	String& input = getEditableInput();
 
-	if (input.starts_with(part))
+	if (input.startsWith(part))
 	{
 		if (input[part.length()] != ' ')
 			complete += ' ';
@@ -1053,7 +1053,7 @@
 		return;
 
 	StringList args = input.right(input.length() - 1).split(" ");
-	String command = args[0].to_lowercase();
+	String command = args[0].toLowerCase();
 	args.remove_at(0);
 
 	if (command == "connect")