Method HandleExCommand

external/zep/src/mode.cpp:1598–1976

    }

    bool ZepMode::HandleExCommand(std::string strCommand) {
        if (strCommand.empty())
            return false;

        auto eraseExtKey = [](std::string& str) {
            auto pos = str.find_last_of('<');
            if (pos != std::string::npos) {
                str.erase(pos, str.size() - pos);
            }
        };

        if (m_lastKey == ExtKeys::BACKSPACE) {
            eraseExtKey(strCommand);

            // Remove the previous character
            if (!strCommand.empty())
                strCommand.pop_back();

            if (strCommand.empty()) {
                GetCurrentWindow()->SetBufferCursor(m_exCommandStartLocation);
                return true;
            }

            m_currentCommand = strCommand;
            return false;
        }

        if (m_lastKey == ExtKeys::ESCAPE) {
            GetCurrentWindow()->SetBufferCursor(m_exCommandStartLocation);
            return true;
        }

        if (m_lastKey == ExtKeys::RETURN) {
            assert(GetCurrentWindow());

            auto& buffer = GetCurrentWindow()->GetBuffer();
            auto bufferCursor = GetCurrentWindow()->GetBufferCursor();

            if (strCommand[0] == '/' || strCommand[0] == '?') {
                // Just exit Ex mode when finished the search
                return true;
            }

            // Remove the return
            eraseExtKey(strCommand);
            if (strCommand == "") {
                return false;
            }

            if (GetEditor().Broadcast(std::make_shared<ZepMessage>(Msg::HandleCommand, strCommand))) {
                return true;
            }

            auto pCommand = GetEditor().FindExCommand(strCommand.substr(1));
            if (pCommand) {
                auto strTok = string_split(strCommand, " ");
                pCommand->Run(strTok);
            } else if (strCommand == ":reg") {