diff --git a/src/backends/sage/sagesession.cpp b/src/backends/sage/sagesession.cpp
index dab63d3a..88357c5e 100644
--- a/src/backends/sage/sagesession.cpp
+++ b/src/backends/sage/sagesession.cpp
@@ -1,502 +1,502 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
  */
 
 #include "sagesession.h"
 #include "sageexpression.h"
 #include "sagecompletionobject.h"
 #include "sagehighlighter.h"
 
 #include <QDebug>
 #include <QRegularExpression>
 #include <KPtyProcess>
 #include <KPtyDevice>
 #include <KLocalizedString>
 #include <KMessageBox>
 #include "settings.h"
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 const QByteArray SageSession::SagePrompt="sage: "; //Text, sage outputs after each command
 const QByteArray SageSession::SageAlternativePrompt="....: "; //Text, sage outputs when it expects further input
 
 //some commands that are run after login
 static QByteArray initCmd="os.environ['PAGER'] = 'cat'                     \n "\
                            "sage.misc.pager.EMBEDDED_MODE = True           \n "\
                            "sage.misc.viewer.BROWSER=''                    \n "\
                            "sage.misc.viewer.viewer.png_viewer('false')         \n" \
                            "sage.plot.plot3d.base.SHOW_DEFAULTS['viewer'] = 'tachyon' \n"\
                            "sage.misc.latex.EMBEDDED_MODE = True           \n "\
                            "os.environ['PAGER'] = 'cat'                    \n "\
                            "%colors nocolor                                \n "\
                            "print '____TMP_DIR____', sage.misc.misc.SAGE_TMP\n";
 
 static QByteArray newInitCmd=
     "__CANTOR_IPYTHON_SHELL__=get_ipython()   \n "\
     "__CANTOR_IPYTHON_SHELL__.autoindent=False\n ";
 
 static QByteArray legacyInitCmd=
     "__CANTOR_IPYTHON_SHELL__=__IPYTHON__   \n "  \
     "__CANTOR_IPYTHON_SHELL__.autoindent=False\n ";
 
 static QByteArray endOfInitMarker="print '____END_OF_INIT____'\n ";
 
 
 
 SageSession::VersionInfo::VersionInfo(int major, int minor)
 {
     m_major=major;
     m_minor=minor;
 }
 
 int SageSession::VersionInfo::majorVersion() const
 {
     return m_major;
 }
 
 int SageSession::VersionInfo::minorVersion() const
 {
     return m_minor;
 }
 
 bool SageSession::VersionInfo::operator==(VersionInfo other) const
 {
     return m_major==other.m_major&&m_minor==other.m_minor;
 }
 
 bool SageSession::VersionInfo::operator<(VersionInfo other) const
 {
     return (m_major!= -1 && other.m_major==-1) ||
         ( ((m_major!=-1 && other.m_major!=-1) || (m_major==other.m_major && m_major==-1) ) && ( m_major<other.m_major||(m_major==other.m_major&&m_minor<other.m_minor) ) );
 }
 
 bool SageSession::VersionInfo::operator<=(VersionInfo other) const
 {
     return (*this < other)||(*this == other);
 }
 
 bool SageSession::VersionInfo::operator>(SageSession::VersionInfo other) const
 {
     return !( (*this <= other ));
 }
 
 bool SageSession::VersionInfo::operator>=(SageSession::VersionInfo other) const
 {
     return !( *this < other);
 }
 
 SageSession::SageSession(Cantor::Backend* backend) : Session(backend),
 m_process(nullptr),
 m_isInitialized(false),
 m_waitingForPrompt(false),
 m_haveSentInitCmd(false)
 {
     connect( &m_dirWatch, SIGNAL(created(QString)), this, SLOT(fileCreated(QString)) );
 }
 
 void SageSession::login()
 {
     qDebug()<<"login";
     emit loginStarted();
 
     m_process=new KPtyProcess(this);
     updateSageVersion();
     const QString& sageExecFile = SageSettings::self()->path().toLocalFile();
     if (false)
 //  Reenable when https://trac.sagemath.org/ticket/25363 is merged
 //  if (m_sageVersion >= SageSession::VersionInfo(8, 4))
         m_process->setProgram(sageExecFile, QStringList() << QLatin1String("--simple-prompt"));
     else
         {
         const QString& sageStartScript = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1String("cantor/sagebackend/cantor-execsage"));
         m_process->setProgram(sageStartScript, QStringList(sageExecFile));
         }
 
     m_process->setOutputChannelMode(KProcess::SeparateChannels);
     m_process->setPtyChannels(KPtyProcess::AllChannels);
     m_process->pty()->setEcho(false);
 
     connect(m_process->pty(), SIGNAL(readyRead()), this, SLOT(readStdOut()));
     connect(m_process, SIGNAL(readyReadStandardError()), this, SLOT(readStdErr()));
     connect(m_process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(processFinished(int,QProcess::ExitStatus)));
     connect(m_process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(reportProcessError(QProcess::ProcessError)));
     m_process->start();
     m_process->waitForStarted();
 
     m_process->pty()->write(initCmd);
 
     if(!SageSettings::self()->autorunScripts().isEmpty()){
         QString autorunScripts = SageSettings::self()->autorunScripts().join(QLatin1String("\n"));
         evaluateExpression(autorunScripts, SageExpression::DeleteOnFinish, true);
     }
 
     changeStatus(Session::Done);
     emit loginDone();
 }
 
 void SageSession::logout()
 {
     qDebug()<<"logout";
 
     disconnect(m_process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(processFinished(int,QProcess::ExitStatus)));
     m_process->pty()->write("exit\n");
 
     m_process->kill();
     //Run sage-cleaner to kill all the orphans
     KProcess::startDetached(SageSettings::self()->path().toLocalFile(),QStringList()<<QLatin1String("-cleaner"));
 
     expressionQueue().clear();
 
     changeStatus(Status::Disable);
 }
 
 Cantor::Expression* SageSession::evaluateExpression(const QString& cmd, Cantor::Expression::FinishingBehavior behave, bool internal)
 {
     qDebug()<<"evaluating: "<<cmd;
     SageExpression* expr=new SageExpression(this, internal);
     expr->setFinishingBehavior(behave);
     expr->setCommand(cmd);
     expr->evaluate();
 
     return expr;
 }
 
 void SageSession::readStdOut()
 {
     m_outputCache.append(QString::fromUtf8(m_process->pty()->readAll()));
     qDebug()<<"out: "<<m_outputCache;
 
     if ( m_outputCache.contains( QLatin1String("___TMP_DIR___") ) )
     {
         int index=m_outputCache.indexOf(QLatin1String("___TMP_DIR___") )+14;
         int endIndex=m_outputCache.indexOf(QLatin1String("\n"), index);
 
         if(endIndex==-1)
             m_tmpPath=m_outputCache.mid( index ).trimmed();
         else
             m_tmpPath=m_outputCache.mid( index, endIndex-index ).trimmed();
 
         qDebug()<<"tmp path: "<<m_tmpPath;
 
         m_dirWatch.addDir( m_tmpPath, KDirWatch::WatchFiles );
     }
 
     if(!m_isInitialized)
     {
         if(updateSageVersion())
         {
             // After the update ipython5 somewhere around Sage 7.6, Cantor stopped working with Sage.
             // To fix this, we start Sage via a help wrapper that makes ipythong using simple prompt.
             // This method works starting with Sage 8.1"
             // Versions lower than 8.1 are not supported because of https://github.com/ipython/ipython/issues/9816
             if(m_sageVersion <= SageSession::VersionInfo(8, 0) && m_sageVersion >= SageSession::VersionInfo(7,4))
             {
                 const QString message = i18n(
                     "Sage version %1.%2 is unsupported. Please update your installation "\
                     "to the supported versions to make it work with Cantor.", m_sageVersion.majorVersion(), m_sageVersion.minorVersion());
                 KMessageBox::error(nullptr, message, i18n("Cantor"));
                 interrupt();
                 logout();
             }
             else if(m_sageVersion<=SageSession::VersionInfo(5, 7))
             {
                 qDebug()<<"using an old version of sage: "<<m_sageVersion.majorVersion()<<"."<<m_sageVersion.minorVersion()<<". Using the old init command";
                 if(!m_haveSentInitCmd)
                 {
                     m_process->pty()->write(legacyInitCmd);
                     defineCustomFunctions();
                     m_process->pty()->write(endOfInitMarker);
                     m_haveSentInitCmd=true;
                 }
 
             }
             else
             {
                 qDebug()<<"using the current set of commands";
 
                 if(!m_haveSentInitCmd)
                 {
                     m_process->pty()->write(newInitCmd);
                     defineCustomFunctions();
                     m_process->pty()->write(endOfInitMarker);
                     m_haveSentInitCmd=true;
                 }
             }
         }
         else
         {
             const QString message = i18n(
                 "Failed to determine the version of Sage. Please check your installation and the output of 'sage -v'.");
             KMessageBox::error(nullptr, message, i18n("Cantor"));
             interrupt();
             logout();
         }
     }
 
 
     int indexOfEOI=m_outputCache.indexOf(QLatin1String("____END_OF_INIT____"));
     if(indexOfEOI!=-1&&m_outputCache.indexOf(QLatin1String(SagePrompt), indexOfEOI)!=-1)
     {
         qDebug()<<"initialized";
         //out.remove("____END_OF_INIT____");
         //out.remove(SagePrompt);
         m_isInitialized=true;
         m_waitingForPrompt=false;
         runFirstExpression();
         changeStatus(Cantor::Session::Done);
         m_outputCache.clear();
     }
 
     //If we are waiting for another prompt, drop every output
     //until a prompt is found
     if(m_isInitialized&&m_waitingForPrompt)
     {
         qDebug()<<"waiting for prompt";
         if(m_outputCache.contains(QLatin1String(SagePrompt)))
             m_waitingForPrompt=false;
 
         m_outputCache.clear();
         return;
     }
 
     if(m_isInitialized)
     {
         if (!expressionQueue().isEmpty())
         {
             SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
             expr->parseOutput(m_outputCache);
         }
         m_outputCache.clear();
     }
 }
 
 void SageSession::readStdErr()
 {
     qDebug()<<"reading stdErr";
     QString out=QLatin1String(m_process->readAllStandardError());
     qDebug()<<"err: "<<out;
     if (!expressionQueue().isEmpty())
     {
         SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
         expr->parseError(out);
     }
 }
 
 void SageSession::currentExpressionChangedStatus(Cantor::Expression::Status status)
 {
     switch (status)
     {
         case Cantor::Expression::Done:
         case Cantor::Expression::Error:
             finishFirstExpression();
 
         default:
             break;
     }
 }
 
 void SageSession::processFinished(int exitCode, QProcess::ExitStatus exitStatus)
 {
     Q_UNUSED(exitCode);
     if(exitStatus==QProcess::CrashExit)
     {
         if(!expressionQueue().isEmpty())
         {
             static_cast<SageExpression*>(expressionQueue().last())
                 ->onProcessError(i18n("The Sage process crashed while evaluating this expression"));
         }else
         {
             //We don't have an actual command. it crashed for some other reason, just show a plain error message box
             KMessageBox::error(nullptr, i18n("The Sage process crashed"), i18n("Cantor"));
         }
     }else
     {
         if(!expressionQueue().isEmpty())
         {
             static_cast<SageExpression*>(expressionQueue().last())
                 ->onProcessError(i18n("The Sage process exited while evaluating this expression"));
         }else
         {
             //We don't have an actual command. it crashed for some other reason, just show a plain error message box
             KMessageBox::error(nullptr, i18n("The Sage process exited"), i18n("Cantor"));
         }
     }
 }
 
 void SageSession::reportProcessError(QProcess::ProcessError e)
 {
     if(e==QProcess::FailedToStart)
     {
         changeStatus(Cantor::Session::Done);
         emit error(i18n("Failed to start Sage"));
     }
 }
 
 void SageSession::runFirstExpression()
 {
     if(!expressionQueue().isEmpty())
     {
         SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
         if (m_isInitialized)
         {
             connect(expr, SIGNAL(statusChanged(Cantor::Expression::Status)), this, SLOT(currentExpressionChangedStatus(Cantor::Expression::Status)));
 
             QString command=expr->command();
             if(command.endsWith(QLatin1Char('?')) && !command.endsWith(QLatin1String("??")))
                 command=QLatin1String("help(")+command.left(command.size()-1)+QLatin1Char(')');
             if(command.startsWith(QLatin1Char('?')))
                 command=QLatin1String("help(")+command.mid(1)+QLatin1Char(')');
             command.append(QLatin1String("\n\n"));
 
             qDebug()<<"writing "<<command<<" to the process";
             expr->setStatus(Cantor::Expression::Computing);
             m_process->pty()->write(command.toUtf8());
         }
         else if (expressionQueue().size() == 1)
             // If queue contains one expression, it means, what we run this expression immediately (drop setting queued status)
             // But we can't run expression before initializing, so mark expression, as queue
             expr->setStatus(Cantor::Expression::Queued);
     }
 }
 
 void SageSession::interrupt()
 {
     if(!expressionQueue().isEmpty())
     {
         qDebug()<<"interrupting " << expressionQueue().first()->command();
         if(m_process->state() != QProcess::NotRunning)
         {
 #ifndef Q_OS_WIN
             const int pid=m_process->pid();
             kill(pid, SIGINT);
 #else
             ; //TODO: interrupt the process on windows
 #endif
         }
         foreach (Cantor::Expression* expression, expressionQueue())
             expression->setStatus(Cantor::Expression::Interrupted);
         expressionQueue().clear();
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
     m_outputCache.clear();
 }
 
 void SageSession::sendInputToProcess(const QString& input)
 {
     m_process->pty()->write(input.toUtf8());
 }
 
 void SageSession::fileCreated( const QString& path )
 {
     qDebug()<<"got a file "<<path;
     if (!expressionQueue().isEmpty())
     {
         SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
         if ( expr )
            expr->addFileResult( path );
     }
 }
 
 void SageSession::setTypesettingEnabled(bool enable)
 {
     Cantor::Session::setTypesettingEnabled(enable);
 
     // We have problems with Sage latex output (generates invalid code sometimes), so disable sage
     // latex output until this not be solved. Users can enable sage latex by hands using %display
     // sage magic.
 
     //tell the sage server to enable/disable pretty_print
     //const QString cmd=QLatin1String("__cantor_enable_typesetting(%1)");
     //evaluateExpression(cmd.arg(enable ? QLatin1String("true"):QLatin1String("false")), Cantor::Expression::DeleteOnFinish);
 }
 
 void SageSession::setWorksheetPath(const QString& path)
 {
     //save the path to the worksheet as variable "__file__"
     //this variable is usually set by the "os" package when running a script
     //but when it is run in an interpreter (like sage server) it is not set
     const QString cmd = QLatin1String("__file__ = '%1'");
     evaluateExpression(cmd.arg(path), Cantor::Expression::DeleteOnFinish, true);
 }
 
 Cantor::CompletionObject* SageSession::completionFor(const QString& command, int index)
 {
     return new SageCompletionObject(command, index, this);
 }
 
 QSyntaxHighlighter* SageSession::syntaxHighlighter(QObject* parent)
 {
     return new SageHighlighter(parent);
 }
 
 SageSession::VersionInfo SageSession::sageVersion()
 {
     return m_sageVersion;
 }
 
 void SageSession::defineCustomFunctions()
 {
     //typesetting
     QString cmd=QLatin1String("def __cantor_enable_typesetting(enable):\n");
     if(m_sageVersion<VersionInfo(5, 7))
     {
         //the _ and __IP.outputcache() are needed to keep the
         // _ operator working. in modern versions of sage the __IP variable
         //has been removed
         cmd+=QLatin1String("\t sage.misc.latex.pretty_print_default(enable);_;__IP.outputcache() \n\n");
     }else if (m_sageVersion > VersionInfo(5, 7) && m_sageVersion< VersionInfo(5, 12))
     {
         cmd+=QLatin1String("\t sage.misc.latex.pretty_print_default(enable)\n\n");
     }else
     {
         cmd+=QLatin1String("\t if(enable==true):\n "\
              "\t \t %display typeset \n"\
              "\t else: \n" \
              "\t \t %display simple \n\n");
     }
 
     sendInputToProcess(cmd);
 }
 
 bool SageSession::updateSageVersion()
 {
     QProcess get_sage_version;
     get_sage_version.setProgram(SageSettings::self()->path().toLocalFile());
     get_sage_version.setArguments(QStringList()<<QLatin1String("-v"));
     get_sage_version.start();
     get_sage_version.waitForFinished(-1);
     QString versionString = QString::fromLocal8Bit(get_sage_version.readLine());
     QRegularExpression versionExp(QLatin1String("(\\d+)\\.(\\d+)"));
     QRegularExpressionMatch version = versionExp.match(versionString);
     qDebug()<<"found version: " << version.capturedTexts();
-    if(version.capturedTexts().length() == 2)
+    if(version.capturedTexts().length() == 3)
     {
         int major=version.capturedTexts().at(1).toInt();
         int minor=version.capturedTexts().at(2).toInt();
         m_sageVersion=SageSession::VersionInfo(major, minor);
         return true;
     }
     else
         return false;
 }