diff --git a/src/backends/octave/octavesession.cpp b/src/backends/octave/octavesession.cpp
index 19bf393f..d536e603 100644
--- a/src/backends/octave/octavesession.cpp
+++ b/src/backends/octave/octavesession.cpp
@@ -1,341 +1,341 @@
 /*
     Copyright (C) 2010 Miha Čančula <miha.cancula@gmail.com>
 
     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.
 */
 
 #include "octavesession.h"
 #include "octaveexpression.h"
 #include "octavecompletionobject.h"
 #include "octavesyntaxhelpobject.h"
 #include "result.h"
 #include "textresult.h"
 
 #include "settings.h"
 #include "octave-backend-config.h"
 
 #include <KProcess>
 #include <KDirWatch>
 
 #include <QTimer>
 #include <QFile>
 #include "octavehighlighter.h"
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 #include <defaultvariablemodel.h>
 
 OctaveSession::OctaveSession ( Cantor::Backend* backend ) : Session ( backend ),
 m_process(nullptr),
 m_watch(nullptr),
 m_variableModel(new Cantor::DefaultVariableModel(this))
 {
     qDebug() << octaveScriptInstallDir;
 }
 
 void OctaveSession::login()
 {
     qDebug() << "login";
     emit loginStarted();
 
     m_process = new KProcess ( this );
     QStringList args;
     args << QLatin1String("--silent");
     args << QLatin1String("--interactive");
     args << QLatin1String("--persist");
 
     // Add the cantor script directory to search path
     args << QLatin1String("--eval");
     args << QString::fromLatin1("addpath %1;").arg(octaveScriptInstallDir);
 
     if (OctaveSettings::integratePlots())
     {
         // Do not show the popup when plotting, rather only print to a file
         args << QLatin1String("--eval");
         args << QLatin1String("graphics_toolkit gnuplot;");
         args << QLatin1String("--eval");
         args << QLatin1String("set (0, \"defaultfigurevisible\",\"off\");");
     }
     else
     {
         args << QLatin1String("--eval");
         args << QLatin1String("set (0, \"defaultfigurevisible\",\"on\");");
     }
 
     // Do not show extra text in help commands
     args << QLatin1String("--eval");
     args << QLatin1String("suppress_verbose_help_message(1);");
 
     // Print the temp dir, used for plot files
     args << QLatin1String("--eval");
     args << QLatin1String("____TMP_DIR____ = tempdir");
 
     if (OctaveSettings::integratePlots())
     {
         m_watch = new KDirWatch(this);
         m_watch->setObjectName(QLatin1String("OctaveDirWatch"));
         connect (m_watch, SIGNAL(dirty(QString)), SLOT(plotFileChanged(QString)) );
     }
 
     // connect the signal and slots prior to staring octave to make sure we handle the very first output
     // in parserOutput() to determine the temp folder and the format of the promt
     connect ( m_process, SIGNAL (readyReadStandardOutput()), SLOT (readOutput()) );
     connect ( m_process, SIGNAL (readyReadStandardError()), SLOT (readError()) );
     connect ( m_process, SIGNAL (error(QProcess::ProcessError)), SLOT (processError()) );
 
     m_process->setProgram ( OctaveSettings::path().toLocalFile(), args );
     qDebug() << "starting " << m_process->program();
     m_process->setOutputChannelMode ( KProcess::SeparateChannels );
     m_process->start();
     m_process->waitForStarted();
     m_process->waitForReadyRead();
 
     if(!OctaveSettings::self()->autorunScripts().isEmpty()){
         QString autorunScripts = OctaveSettings::self()->autorunScripts().join(QLatin1String("\n"));
 
         evaluateExpression(autorunScripts, OctaveExpression::DeleteOnFinish, true);
     }
 
     changeStatus(Cantor::Session::Done);
     emit loginDone();
     qDebug()<<"login done";
 }
 
 void OctaveSession::logout()
 {
     qDebug()<<"logout";
 
     if(!m_process)
         return;
 
     disconnect(m_process, nullptr, this, nullptr);
 
 //     if(status()==Cantor::Session::Running)
         //TODO: terminate the running expressions first
 
     m_process->write("exit\n");
     qDebug()<<"waiting for octave to finish";
     m_process->waitForFinished();
     qDebug()<<"octave exit finished";
 
     if(m_process->state() != QProcess::NotRunning)
     {
         m_process->kill();
         qDebug()<<"octave still running, process kill enforced";
     }
 
     expressionQueue().clear();
     delete m_process;
     m_process = nullptr;
 
     m_prompt = QRegExp();
     m_tempDir.clear();
 
     changeStatus(Status::Disable);
 
     qDebug()<<"logout done";
 }
 
 void OctaveSession::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
         }
         expressionQueue().first()->interrupt();
         expressionQueue().removeFirst();
         foreach (Cantor::Expression* expression, expressionQueue())
             expression->setStatus(Cantor::Expression::Done);
         expressionQueue().clear();
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
 }
 
 void OctaveSession::processError()
 {
     qDebug() << "processError";
     emit error(m_process->errorString());
 }
 
 Cantor::Expression* OctaveSession::evaluateExpression ( const QString& command, Cantor::Expression::FinishingBehavior finishingBehavior, bool internal )
 {
     qDebug() << "evaluating: " << command;
     OctaveExpression* expression = new OctaveExpression ( this, internal);
     expression->setCommand ( command );
     expression->setFinishingBehavior ( finishingBehavior );
     expression->evaluate();
 
     return expression;
 }
 
 void OctaveSession::runFirstExpression()
 {
     OctaveExpression* expression = static_cast<OctaveExpression*>(expressionQueue().first());
     connect(expression, SIGNAL(statusChanged(Cantor::Expression::Status)), this, SLOT(currentExpressionStatusChanged(Cantor::Expression::Status)));
     QString command = expression->command();
     command.replace(QLatin1Char('\n'), QLatin1Char(','));
     command += QLatin1Char('\n');
     expression->setStatus(Cantor::Expression::Computing);
     m_process->write ( command.toLocal8Bit() );
 }
 
 void OctaveSession::readError()
 {
     qDebug() << "readError";
     QString error = QString::fromLocal8Bit(m_process->readAllStandardError());
     if (!expressionQueue().isEmpty() && !error.isEmpty())
     {
         static_cast<OctaveExpression*>(expressionQueue().first())->parseError(error);
     }
 }
 
 void OctaveSession::readOutput()
 {
     qDebug() << "readOutput";
     while (m_process->bytesAvailable() > 0)
     {
         if (m_tempDir.isEmpty() && !m_process->canReadLine())
         {
             qDebug() << "Waiting";
             // Wait for the full line containing octave's tempDir
             return;
         }
         QString line = QString::fromLocal8Bit(m_process->readLine());
         qDebug()<<"start parsing " << "  " << line;
         if (expressionQueue().isEmpty() || m_prompt.isEmpty())
         {
             // no expression is available, we're parsing the first output of octave after the start
             // -> determine the location of the temporary folder and the format of octave's promt
             if (m_prompt.isEmpty() && line.contains(QLatin1String(":1>")))
             {
                 qDebug() << "Found Octave prompt:" << line;
                 line.replace(QLatin1String(":1"), QLatin1String(":[0-9]+"));
                 m_prompt.setPattern(line);
             }
             else if (line.contains(QLatin1String("____TMP_DIR____")))
             {
                 m_tempDir = line;
                 m_tempDir.remove(0,18);
                 m_tempDir.chop(1); // isolate the tempDir's location
                 qDebug() << "Got temporary file dir:" << m_tempDir;
                 if (m_watch)
                 {
                     m_watch->addDir(m_tempDir, KDirWatch::WatchFiles);
                 }
             }
         }
         else if (line.contains(m_prompt))
         {
             // Check for errors before finalizing the expression
             // this makes sure that all errors are caught
             readError();
             if (!expressionQueue().isEmpty())
             {
                 // Get command before finalize, because after finalizing the expression will be dequeued
                 const QString& command = expressionQueue().first()->command();
                 static_cast<OctaveExpression*>(expressionQueue().first())->finalize();
-                if (command.contains(QLatin1String(" = ")))
+                if (command.contains(QLatin1String(" = ")) || command.contains(QLatin1String("clear")))
                 {
                     emit variablesChanged();
                 }
             }
         }
         else
         {
             // Avoid many calls to setResult if a lot of output came at the same time
             while (m_process->canReadLine())
             {
                 line += QString::fromLocal8Bit(m_process->readLine());
             }
             if (!expressionQueue().isEmpty())
                 static_cast<OctaveExpression*>(expressionQueue().first())->parseOutput(line);
 
         }
     }
 }
 
 void OctaveSession::currentExpressionStatusChanged(Cantor::Expression::Status status)
 {
     qDebug() << "currentExpressionStatusChanged";
     switch (status)
     {
     case Cantor::Expression::Done:
     case Cantor::Expression::Error:
         expressionQueue().removeFirst();
         if (expressionQueue().isEmpty())
             changeStatus(Done);
         else
             runFirstExpression();
         break;
     default:
         break;
     }
 }
 
 void OctaveSession::plotFileChanged(const QString& filename)
 {
     if (!QFile::exists(filename) || !filename.split(QLatin1Char('/')).last().contains(QLatin1String("c-ob-")))
     {
         return;
     }
     if (!expressionQueue().isEmpty())
     {
         static_cast<OctaveExpression*>(expressionQueue().first())->parsePlotFile(filename);
     }
 }
 
 Cantor::CompletionObject* OctaveSession::completionFor ( const QString& cmd, int index )
 {
     return new OctaveCompletionObject ( cmd, index, this );
 }
 
 Cantor::SyntaxHelpObject* OctaveSession::syntaxHelpFor ( const QString& cmd )
 {
     return new OctaveSyntaxHelpObject ( cmd, this );
 }
 
 QSyntaxHighlighter* OctaveSession::syntaxHighlighter ( QObject* parent )
 {
     OctaveHighlighter* highlighter = new OctaveHighlighter ( parent, this );
 
     connect ( this, SIGNAL(variablesChanged()), highlighter, SLOT(updateVariables()) );
 
     return highlighter;
 }
 
 QAbstractItemModel* OctaveSession::variableModel()
 {
     return m_variableModel;
 }
 
 
 void OctaveSession::runSpecificCommands()
 {
     m_process->write("figure(1,'visible','off')");
 }