diff --git a/src/backends/octave/octavesession.cpp b/src/backends/octave/octavesession.cpp
index 778e2fc7..1a76f999 100644
--- a/src/backends/octave/octavesession.cpp
+++ b/src/backends/octave/octavesession.cpp
@@ -1,397 +1,394 @@
 /*
     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 "octavehighlighter.h"
 #include "result.h"
 #include "textresult.h"
 
 #include "settings.h"
 #include "octave-backend-config.h"
 #include "octavehighlighter.h"
 
 #include <KProcess>
 #include <KDirWatch>
 #include <KLocalizedString>
 
 #include <QTimer>
 #include <QFile>
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 #include "octavevariablemodel.h"
 
 const QRegExp OctaveSession::PROMPT_UNCHANGEABLE_COMMAND = QRegExp(QLatin1String("(,|;)+"));
 
 OctaveSession::OctaveSession ( Cantor::Backend* backend ) : Session ( backend ),
 m_process(nullptr),
 m_prompt(QLatin1String("CANTOR_OCTAVE_BACKEND_PROMPT:([0-9]+)> ")),
 m_subprompt(QLatin1String("CANTOR_OCTAVE_BACKEND_SUBPROMPT:([0-9]+)> ")),
 m_previousPromptNumber(1),
 m_watch(nullptr),
 m_syntaxError(false),
 m_needUpdate(false),
 m_variableModel(new OctaveVariableModel(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");
 
     // Setting prompt and subprompt
     args << QLatin1String("--eval");
     args << QLatin1String("PS1('CANTOR_OCTAVE_BACKEND_PROMPT:\\#> ');");
     args << QLatin1String("--eval");
     args << QLatin1String("PS2('CANTOR_OCTAVE_BACKEND_SUBPROMPT:\\#> ');");
 
     // Add the cantor script directory to search path
     args << QLatin1String("--eval");
     args << QString::fromLatin1("addpath %1;").arg(octaveScriptInstallDir);
 
     // Print the temp dir, used for plot files
     args << QLatin1String("--eval");
     args << QLatin1String("printf('%s\\n', ['____TMP_DIR____ = ' tempdir]);");
 
     // Do not show extra text in help commands
     args << QLatin1String("--eval");
     args << QLatin1String("suppress_verbose_help_message(1);");
 
     if (OctaveSettings::integratePlots())
     {
         // Do not show the popup when plotting, rather only print to a file
         args << QLatin1String("--eval");
         args << QLatin1String("set (0, \"defaultfigurevisible\",\"off\");");
         args << QLatin1String("--eval");
         args << QLatin1String("graphics_toolkit gnuplot;");
     }
     else
     {
         args << QLatin1String("--eval");
         args << QLatin1String("set (0, \"defaultfigurevisible\",\"on\");");
     }
 
     if (OctaveSettings::integratePlots())
     {
         m_watch = new KDirWatch(this);
         m_watch->setObjectName(QLatin1String("OctaveDirWatch"));
         connect (m_watch, SIGNAL(dirty(QString)), SLOT(plotFileChanged(QString)) );
     }
 
     m_process->setProgram ( OctaveSettings::path().toLocalFile(), args );
     qDebug() << "starting " << m_process->program();
     m_process->setOutputChannelMode ( KProcess::SeparateChannels );
     m_process->start();
     m_process->waitForStarted();
 
     // Got tmp dir
     bool loginFinished = false;
     QString input;
     while (!loginFinished)
     {
         m_process->waitForReadyRead();
         input += QString::fromLatin1(m_process->readAllStandardOutput());
         qDebug() << "login input: " << input;
         if (input.contains(QLatin1String("____TMP_DIR____")))
             {
                 m_tempDir = input;
                 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);
                 }
                 loginFinished = true;
             }
     }
 
     connect ( m_process, SIGNAL (readyReadStandardOutput()), SLOT (readOutput()) );
     connect ( m_process, SIGNAL (readyReadStandardError()), SLOT (readError()) );
     connect ( m_process, SIGNAL (error(QProcess::ProcessError)), SLOT (processError()) );
 
     if(!OctaveSettings::self()->autorunScripts().isEmpty()){
         QString autorunScripts = OctaveSettings::self()->autorunScripts().join(QLatin1String("\n"));
 
         evaluateExpression(autorunScripts, OctaveExpression::DeleteOnFinish, true);
         m_needUpdate = 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_tempDir.clear();
     m_output.clear();
     m_previousPromptNumber = 1;
 
     m_variableModel->clearVariables();
 
     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();
 
         // Cleanup inner state and call octave prompt printing
         // If we move this code for interruption to Session, we need add function for
         // cleaning before setting Done status
         m_output.clear();
         m_process->write("\n");
 
         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->internalCommand();
     expression->setStatus(Cantor::Expression::Computing);
     if (isDoNothingCommand(command))
         expression->setStatus(Cantor::Expression::Done);
     else
     {
         m_process->write ( command.toLocal8Bit() );
     }
 }
 
 void OctaveSession::readError()
 {
     qDebug() << "readError";
     QString error = QString::fromLocal8Bit(m_process->readAllStandardError());
     if (!expressionQueue().isEmpty() && !error.isEmpty())
     {
         OctaveExpression* const exp = static_cast<OctaveExpression*>(expressionQueue().first());
         if (m_syntaxError)
         {
             m_syntaxError = false;
             exp->parseError(i18n("Syntax Error"));
         }
         else
             exp->parseError(error);
 
         m_output.clear();
     }
 }
 
 void OctaveSession::readOutput()
 {
     qDebug() << "readOutput";
     while (m_process->bytesAvailable() > 0)
     {
         QString line = QString::fromLocal8Bit(m_process->readLine());
         qDebug()<<"start parsing " << "  " << line;
         if (line.contains(m_prompt))
         {
             const int promptNumber = m_prompt.cap(1).toInt();
-            qDebug() << "--- promptNumber" << promptNumber;
-            qDebug() << "--- m_previousPromptNumber" << m_previousPromptNumber;
             if (!expressionQueue().isEmpty())
             {
                 const QString& command = expressionQueue().first()->command();
                 if (m_previousPromptNumber + 1 == promptNumber || isSpecialOctaveCommand(command))
                 {
                     if (!expressionQueue().isEmpty())
                         static_cast<OctaveExpression*>(expressionQueue().first())->parseOutput(m_output);
                 }
                 else
                 {
                     // Error command don't increase octave prompt number (usually, but not always)
                     readError();
                 }
             }
             m_previousPromptNumber = promptNumber;
             m_output.clear();
         }
         else if (line.contains(m_subprompt) && m_subprompt.cap(1).toInt() == m_previousPromptNumber)
         {
             // User don't write finished octave statement (for example, write 'a = [1,2, ' only), so
             // octave print subprompt and waits input finish.
             m_syntaxError = true;
             qDebug() << "subprompt catch";
             m_process->write(")]'\"\n"); // forse exit from subprompt
             m_output.clear();
         }
         else
             m_output += line;
     }
 }
 
 void OctaveSession::currentExpressionStatusChanged(Cantor::Expression::Status status)
 {
     qDebug() << "currentExpressionStatusChanged";
     switch (status)
     {
     case Cantor::Expression::Done:
     case Cantor::Expression::Error:
         m_needUpdate |= !expressionQueue().first()->isInternal();
         expressionQueue().removeFirst();
         if (expressionQueue().isEmpty())
             if (m_needUpdate)
             {
-                qDebug() << "--- update";
                 m_variableModel->update();
                 m_needUpdate = false;
             }
             else
                 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 ( m_variableModel, &Cantor::DefaultVariableModel::variablesAdded, highlighter, &OctaveHighlighter::addUserVariable);
     connect ( m_variableModel, &Cantor::DefaultVariableModel::variablesRemoved, highlighter, &OctaveHighlighter::removeUserVariable);
 
     return highlighter;
 }
 
 QAbstractItemModel* OctaveSession::variableModel()
 {
     return m_variableModel;
 }
 
 
 void OctaveSession::runSpecificCommands()
 {
     m_process->write("figure(1,'visible','off')");
 }
 
 bool OctaveSession::isDoNothingCommand(const QString& command)
 {
     return PROMPT_UNCHANGEABLE_COMMAND.exactMatch(command) || command.isEmpty();
 }
 
 bool OctaveSession::isSpecialOctaveCommand(const QString& command)
 {
     return command.contains(QLatin1String("completion_matches"));
 }
diff --git a/src/backends/octave/octavevariablemodel.cpp b/src/backends/octave/octavevariablemodel.cpp
index 02308416..fcfa8819 100644
--- a/src/backends/octave/octavevariablemodel.cpp
+++ b/src/backends/octave/octavevariablemodel.cpp
@@ -1,94 +1,88 @@
 /*
     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) 2018 Nikita Sirgienko <warquark@gmail.com>
 */
 
 #include "octavevariablemodel.h"
 #include "octavesession.h"
 #include "textresult.h"
 
 #include <QDebug>
 
 using namespace Cantor;
 
 OctaveVariableModel::OctaveVariableModel(OctaveSession* session):
     DefaultVariableModel(session),
     m_expr(nullptr)
 {
 }
 
 void OctaveVariableModel::update()
 {
     static const QString& cmd = QLatin1String(
         "printf('__cantor_delimiter_line__\\n');"
         "__cantor_list__ = who();"
         "for __cantor_index__ = 1:length(__cantor_list__)"
         "  __cantor_varname__ = char(__cantor_list__{__cantor_index__});"
         "  printf([__cantor_varname__ '\\n']);"
         "  eval(['disp(' __cantor_varname__ ')']);"
         "  printf('__cantor_delimiter_line__\\n')"
         "endfor;"
         "clear __cantor_list__;"
         "clear __cantor_index__;"
         "clear __cantor_varname__;"
     );
 
     if (m_expr)
         return;
 
     m_expr = session()->evaluateExpression(cmd, Expression::FinishingBehavior::DoNotDelete, true);
     connect(m_expr, &Expression::statusChanged, this, &OctaveVariableModel::parseNewVariables);
 }
 
 void OctaveVariableModel::parseNewVariables(Expression::Status status)
 {
     switch(status)
     {
         case Expression::Status::Done:
         {
             static const QLatin1String delimiter("__cantor_delimiter_line__");
 
             // Result always must be, if we done, so don't check it
             QString text = static_cast<Cantor::TextResult*>(m_expr->result())->plain();
-
-            qDebug() << "---- text" << text;
             const QStringList& lines = text.split(delimiter, QString::SkipEmptyParts);
-            qDebug() << "---- lines" << lines;
 
             QList<Variable> vars;
             for (QString line : lines)
             {
                 line = line.trimmed();
                 const QString& name = line.section(QLatin1String("\n"), 0, 0);
                 const QString& value = line.section(QLatin1String("\n"), 1);
-                qDebug() << "--- name" << name;
-                qDebug() << "--- value" << value;
                 vars << Variable{name, value};
             }
 
-            qDebug() << "--- vars size" << vars.size();
             setVariables(vars);
             break;
         }
         default:
             return;
     }
 
     m_expr->deleteLater();
     m_expr = nullptr;
 }
diff --git a/src/lib/defaultvariablemodel.cpp b/src/lib/defaultvariablemodel.cpp
index baf93794..1c8a5ac5 100644
--- a/src/lib/defaultvariablemodel.cpp
+++ b/src/lib/defaultvariablemodel.cpp
@@ -1,282 +1,282 @@
 /*
     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) 2010 Miha Čančula <miha.cancula@gmail.com>
  */
 
 #include "defaultvariablemodel.h"
 #include <QDebug>
 #include <KLocalizedString>
 #include "extension.h"
 #include "backend.h"
 
 namespace Cantor
 {
 
 class DefaultVariableModelPrivate
 {
 public:
     QList<DefaultVariableModel::Variable> variables;
 
     Session* session;
     VariableManagementExtension* extension;
 };
 
 DefaultVariableModel::DefaultVariableModel(Session* session): QAbstractTableModel(session),
 d_ptr(new DefaultVariableModelPrivate)
 {
     Q_D(DefaultVariableModel);
     d->session = session;
     if (session)
     {
         d->extension = dynamic_cast<Cantor::VariableManagementExtension*>(session->backend()->extension(QLatin1String("VariableManagementExtension")));
     }
     qDebug() << d->session << d->extension;
 }
 
 int DefaultVariableModel::columnCount(const QModelIndex& parent) const
 {
     Q_UNUSED(parent);
     return ColumnCount;
 }
 
 int DefaultVariableModel::rowCount(const QModelIndex& parent) const
 {
     if (parent.isValid())
     {
         return 0;
     }
     else
     {
         Q_D(const DefaultVariableModel);
         return d->variables.size();
     }
 }
 
 QVariant DefaultVariableModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
     if(role==Qt::DisplayRole && orientation==Qt::Horizontal) {
         switch(section) {
             case NameColumn:
                 return i18nc("@title:column", "Name");
 
             case ValueColumn:
                 return i18nc("@title:column", "Value");
                 break;
         }
     }
     return QVariant();
 }
 
 Qt::ItemFlags DefaultVariableModel::flags(const QModelIndex& index) const
 {
     return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
 }
 
 QVariant DefaultVariableModel::data(const QModelIndex& index, int role) const
 {
     if (role != Qt::DisplayRole || !index.isValid())
     {
         return QVariant();
     }
 
     Q_D(const DefaultVariableModel);
     switch (index.column())
     {
         case NameColumn:
             return QVariant(d->variables[index.row()].name);
         case ValueColumn:
             return QVariant(d->variables[index.row()].value);
         default:
             return QVariant();
     }
 }
 
 bool DefaultVariableModel::setData(const QModelIndex& index, const QVariant& value, int role)
 {
     if(role!=Qt::EditRole || !value.isValid() || !index.isValid())
     {
         return false;
     }
 
     Q_D(const DefaultVariableModel);
     if(index.column() == ValueColumn)
     {
         // Changing values
         QString name = data(index.sibling(index.row(), NameColumn)).toString();
         d->session->evaluateExpression(d->extension->setValue(name, value.toString()), Expression::DeleteOnFinish);
         return true;
     }
     else if(index.column() == NameColumn)
     {
         // Renaming => copy it, then delete the old one
         QString oldName = data(index).toString();
         QString variableValue = data(index.sibling(index.row(), ValueColumn)).toString();
         d->session->evaluateExpression(d->extension->addVariable(value.toString(), variableValue), Expression::DeleteOnFinish);
         d->session->evaluateExpression(d->extension->removeVariable(oldName), Expression::DeleteOnFinish);
         return true;
     }
     return false;
 }
 
 void DefaultVariableModel::addVariable(const QString& name, const QString& value)
 {
     Variable v;
     v.name = name;
     v.value = value;
     addVariable(v);
 }
 
 void DefaultVariableModel::addVariable(const Cantor::DefaultVariableModel::Variable& variable)
 {
     Q_D(DefaultVariableModel);
     if ( d->variables.contains(variable) )
     {
         // TODO: Why we remove variable here? Set value properly
         removeVariable(variable);
     }
     beginInsertRows(QModelIndex(), d->variables.size(), d->variables.size());
     d->variables.append(variable);
     emit variablesAdded(QStringList(variable.name));
     endInsertRows();
 }
 
 void DefaultVariableModel::removeVariable(const QString& name)
 {
     Variable v;
     v.name = name;
     removeVariable(v);
 }
 
 void DefaultVariableModel::removeVariable(const Cantor::DefaultVariableModel::Variable& variable)
 {
     Q_D(DefaultVariableModel);
     int row = d->variables.indexOf(variable);
     if(row==-1)
         return;
     const QString& name = variable.name;
     beginRemoveRows(QModelIndex(), row, row);
     d->variables.removeAt(row);
     endRemoveRows();
     emit variablesRemoved(QStringList(name));
 }
 
 void DefaultVariableModel::clearVariables()
 {
     Q_D(DefaultVariableModel);
     beginResetModel();
 
     QStringList names;
     for (const Variable var: d->variables)
         names.append(var.name);
 
     d->variables.clear();
     endResetModel();
 
     emit variablesRemoved(names);
 }
 
 void DefaultVariableModel::setVariables(const QList<DefaultVariableModel::Variable>& newVars)
 {
     Q_D(DefaultVariableModel);
 
     QStringList addedVars;
     QStringList removedVars;
 
     // Handle deleted vars
-    for (const Variable var : variables())
+    int i = 0;
+    while (i < d->variables.size())
     {
+        Variable var = d->variables[i];
         bool found = false;
         for (const Variable& newvar : newVars)
             if(var.name == newvar.name)
             {
                 found=true;
                 break;
             }
 
         if (!found)
+        {
             removedVars << var.name;
+            beginRemoveRows(QModelIndex(), i, i);
+            d->variables.removeAt(i);
+            endRemoveRows();
+        }
+        else
+            i++;
     }
 
     // Handle added vars
     const int size = d->variables.size();
     for (const Variable newvar : newVars)
     {
         bool found = false;
         for (int i = 0; i < size; i++)
             if(d->variables[i].name == newvar.name)
             {
                 found=true;
                 if (d->variables[i].value != newvar.value)
                 {
-                    qDebug() << "--- update value for variable" << newvar.name << "to" << newvar.value;
                     QModelIndex index = createIndex(i, ValueColumn);
                     QAbstractItemModel::setData(index, newvar.value);
                     d->variables[i].value = newvar.value;
                     emit dataChanged(index, index);
                 }
                 break;
             }
 
         if (!found)
         {
             addedVars << newvar.name;
             beginInsertRows(QModelIndex(), d->variables.size(), d->variables.size());
             d->variables.append(newvar);
             endInsertRows();
         }
     }
 
-    for (const QString& var: removedVars)
-    {
-        int row = d->variables.indexOf(Variable{var,QString()});
-        beginRemoveRows(QModelIndex(), row, row);
-        d->variables.removeAt(row);
-        endRemoveRows();
-    }
-
     emit variablesAdded(addedVars);
     emit variablesRemoved(removedVars);
 }
 
 Session* DefaultVariableModel::session() const
 {
     Q_D(const DefaultVariableModel);
     return d->session;
 }
 
 QList<DefaultVariableModel::Variable> DefaultVariableModel::variables() const
 {
     Q_D(const DefaultVariableModel);
     return d->variables;
 }
 
 QStringList DefaultVariableModel::variableNames() const
 {
     Q_D(const DefaultVariableModel);
     QStringList names;
     for (const Variable var: d->variables)
         names << var.name;
     return names;
 }
 
 bool operator==(const Cantor::DefaultVariableModel::Variable& one, const Cantor::DefaultVariableModel::Variable& other)
 {
     return one.name == other.name;
 }
 
 }