diff --git a/documentation/documentationview.cpp b/documentation/documentationview.cpp
index 2e073f23ae..1eba28bcef 100644
--- a/documentation/documentationview.cpp
+++ b/documentation/documentationview.cpp
@@ -1,373 +1,380 @@
 /*
    Copyright 2009 Aleix Pol Gonzalez <aleixpol@kde.org>
    Copyright 2010 Benjamin Port <port.benjamin@gmail.com>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License version 2 as published by the Free Software Foundation.
 
    This library 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 */
 
 #include "documentationview.h"
 
 #include <QAction>
 #include <QIcon>
 #include <QVBoxLayout>
 #include <QLabel>
 #include <QComboBox>
 #include <QTextEdit>
 #include <QCompleter>
 #include <QLayout>
 #include <QTextBrowser>
 #include <QAbstractItemView>
 
 #include <QLineEdit>
 #include <KLocalizedString>
 
 #include <interfaces/icore.h>
 #include <interfaces/idocumentationprovider.h>
 #include <interfaces/idocumentationproviderprovider.h>
 #include <interfaces/idocumentationcontroller.h>
 #include <interfaces/iplugincontroller.h>
 #include "documentationfindwidget.h"
 #include "debug.h"
 
 Q_LOGGING_CATEGORY(DOCUMENTATION, "kdevplatform.documentation")
 
 
 using namespace KDevelop;
 
 DocumentationView::DocumentationView(QWidget* parent, ProvidersModel* model)
     : QWidget(parent), mProvidersModel(model)
 {
     setWindowIcon(QIcon::fromTheme(QStringLiteral("documentation"), windowIcon()));
     setWindowTitle(i18n("Documentation"));
 
     setLayout(new QVBoxLayout(this));
     layout()->setMargin(0);
     layout()->setSpacing(0);
 
     //TODO: clean this up, simply use addAction as that will create a toolbar automatically
     //      use custom QAction's with createWidget for mProviders and mIdentifiers
     mActions = new KToolBar(this);
     // set window title so the QAction from QToolBar::toggleViewAction gets a proper name set
     mActions->setWindowTitle(i18n("Documentation Tool Bar"));
     mActions->setToolButtonStyle(Qt::ToolButtonIconOnly);
     int iconSize = style()->pixelMetric(QStyle::PM_SmallIconSize);
     mActions->setIconSize(QSize(iconSize, iconSize));
 
     mFindDoc = new DocumentationFindWidget;
     mFindDoc->hide();
 
     mBack = mActions->addAction(QIcon::fromTheme(QStringLiteral("go-previous")), i18n("Back"));
     mForward = mActions->addAction(QIcon::fromTheme(QStringLiteral("go-next")), i18n("Forward"));
     mFind = mActions->addAction(QIcon::fromTheme(QStringLiteral("edit-find")), i18n("Find"), mFindDoc, SLOT(startSearch()));
     mActions->addSeparator();
     mActions->addAction(QIcon::fromTheme(QStringLiteral("go-home")), i18n("Home"), this, SLOT(showHome()));
     mProviders = new QComboBox(mActions);
 
     mIdentifiers = new QLineEdit(mActions);
     mIdentifiers->setClearButtonEnabled(true);
     mIdentifiers->setPlaceholderText(i18n("Search..."));
     mIdentifiers->setCompleter(new QCompleter(mIdentifiers));
 //     mIdentifiers->completer()->setCompletionMode(QCompleter::UnfilteredPopupCompletion);
     mIdentifiers->completer()->setCaseSensitivity(Qt::CaseInsensitive);
 
     /* vertical size policy should be left to the style. */
     mIdentifiers->setSizePolicy(QSizePolicy::Expanding, mIdentifiers->sizePolicy().verticalPolicy());
     connect(mIdentifiers->completer(), static_cast<void(QCompleter::*)(const QModelIndex&)>(&QCompleter::activated),
             this, &DocumentationView::changedSelection);
     connect(mIdentifiers, &QLineEdit::returnPressed, this, &DocumentationView::returnPressed);
 
     QWidget::setTabOrder(mProviders, mIdentifiers);
     mActions->addWidget(mProviders);
     mActions->addWidget(mIdentifiers);
 
     mBack->setEnabled(false);
     mForward->setEnabled(false);
     connect(mBack, &QAction::triggered, this, &DocumentationView::browseBack);
     connect(mForward, &QAction::triggered, this, &DocumentationView::browseForward);
     mCurrent = mHistory.end();
 
     layout()->addWidget(mActions);
     layout()->addWidget(new QWidget(this));
     layout()->addWidget(mFindDoc);
 
     setFocusProxy(mIdentifiers);
 
     QMetaObject::invokeMethod(this, "initialize", Qt::QueuedConnection);
 }
 
 void DocumentationView::initialize()
 {
     mProviders->setModel(mProvidersModel);
     connect(mProviders, static_cast<void (QComboBox::*)(int)>(&QComboBox::activated), this, &DocumentationView::changedProvider);
     foreach (IDocumentationProvider* p, mProvidersModel->providers()) {
         // can't use new signal/slot syntax here, IDocumentation is not a QObject
         connect(dynamic_cast<QObject*>(p), SIGNAL(addHistory(KDevelop::IDocumentation::Ptr)),
                 this, SLOT(addHistory(KDevelop::IDocumentation::Ptr)));
     }
     connect(mProvidersModel, &ProvidersModel::providersChanged, this, &DocumentationView::emptyHistory);
 
     if (mProvidersModel->rowCount() > 0) {
         changedProvider(0);
     }
 }
 
 void DocumentationView::browseBack()
 {
     mCurrent--;
     mBack->setEnabled(mCurrent != mHistory.begin());
     mForward->setEnabled(true);
 
     updateView();
 }
 
 void DocumentationView::browseForward()
 {
     mCurrent++;
     mForward->setEnabled(mCurrent+1 != mHistory.end());
     mBack->setEnabled(true);
 
     updateView();
 }
 
 void DocumentationView::showHome()
 {
     auto prov = mProvidersModel->provider(mProviders->currentIndex());
 
     showDocumentation(prov->homePage());
 }
 
 void DocumentationView::returnPressed()
 {
     // Exit if search text is empty. It's necessary because of empty
     // line edit text not leads to "empty" completer indexes.
     if (mIdentifiers->text().isEmpty())
         return;
 
     // Exit if completer popup has selected item - in this case 'Return'
     // key press emits QCompleter::activated signal which is already connected.
     if (mIdentifiers->completer()->popup()->currentIndex().isValid())
         return;
 
     // If user doesn't select any item in popup we will try to use the first row.
     if (mIdentifiers->completer()->setCurrentRow(0))
         changedSelection(mIdentifiers->completer()->currentIndex());
 }
 
 void DocumentationView::changedSelection(const QModelIndex& idx)
 {
     if (idx.isValid()) {
+        // Skip view update if user try to show already opened documentation
+        mIdentifiers->setText(idx.data(Qt::DisplayRole).toString());
+        if (mIdentifiers->text() == (*mCurrent)->name()) {
+            return;
+        }
+
         IDocumentationProvider* prov = mProvidersModel->provider(mProviders->currentIndex());
         auto doc = prov->documentationForIndex(idx);
         if (doc) {
             showDocumentation(doc);
         }
     }
 }
 
 void DocumentationView::showDocumentation(const IDocumentation::Ptr& doc)
 {
     qCDebug(DOCUMENTATION) << "showing" << doc->name();
 
     addHistory(doc);
     updateView();
 }
 
 void DocumentationView::addHistory(const IDocumentation::Ptr& doc)
 {
     mBack->setEnabled(!mHistory.isEmpty());
     mForward->setEnabled(false);
 
     // clear all history following the current item, unless we're already
     // at the end (otherwise this code crashes when history is empty, which
     // happens when addHistory is first called on startup to add the
     // homepage)
     if (mCurrent+1 < mHistory.end()) {
         mHistory.erase(mCurrent+1, mHistory.end());
     }
 
     mHistory.append(doc);
     mCurrent = mHistory.end()-1;
 
     // NOTE: we assume an existing widget was used to navigate somewhere
     //       but this history entry actually contains the new info for the
     //       title... this is ugly and should be refactored somehow
     if (mIdentifiers->completer()->model() == (*mCurrent)->provider()->indexModel()) {
         mIdentifiers->setText((*mCurrent)->name());
     }
 }
 
 void DocumentationView::emptyHistory()
 {
     mHistory.clear();
     mCurrent = mHistory.end();
     mBack->setEnabled(false);
     mForward->setEnabled(false);
     if (mProviders->count() > 0) {
         mProviders->setCurrentIndex(0);
         changedProvider(0);
     }
 }
 
 void DocumentationView::updateView()
 {
     mProviders->setCurrentIndex(mProvidersModel->rowForProvider((*mCurrent)->provider()));
     mIdentifiers->completer()->setModel((*mCurrent)->provider()->indexModel());
     mIdentifiers->setText((*mCurrent)->name());
+    mIdentifiers->completer()->setCompletionPrefix((*mCurrent)->name());
 
     QLayoutItem* lastview = layout()->takeAt(1);
     Q_ASSERT(lastview);
 
     if (lastview->widget()->parent() == this) {
         lastview->widget()->deleteLater();
     }
 
     delete lastview;
 
     mFindDoc->setEnabled(false);
     QWidget* w = (*mCurrent)->documentationWidget(mFindDoc, this);
     Q_ASSERT(w);
     QWidget::setTabOrder(mIdentifiers, w);
 
     mFind->setEnabled(mFindDoc->isEnabled());
     if (!mFindDoc->isEnabled()) {
         mFindDoc->hide();
     }
 
     QLayoutItem* findWidget = layout()->takeAt(1);
     layout()->addWidget(w);
     layout()->addItem(findWidget);
 }
 
 void DocumentationView::changedProvider(int row)
 {
     mIdentifiers->completer()->setModel(mProvidersModel->provider(row)->indexModel());
     mIdentifiers->clear();
 
     showHome();
 }
 
 ////////////// ProvidersModel //////////////////
 
 ProvidersModel::ProvidersModel(QObject* parent)
     : QAbstractListModel(parent)
     , mProviders(ICore::self()->documentationController()->documentationProviders())
 {
     connect(ICore::self()->pluginController(), &IPluginController::unloadingPlugin, this, &ProvidersModel::unloaded);
     connect(ICore::self()->pluginController(), &IPluginController::pluginLoaded, this, &ProvidersModel::loaded);
     connect(ICore::self()->documentationController(), &IDocumentationController::providersChanged, this, &ProvidersModel::reloadProviders);
 }
 
 void ProvidersModel::reloadProviders()
 {
     beginResetModel();
     mProviders = ICore::self()->documentationController()->documentationProviders();
 
     std::sort(mProviders.begin(), mProviders.end(),
               [](const KDevelop::IDocumentationProvider* a, const KDevelop::IDocumentationProvider* b) {
         return a->name() < b->name();
     });
 
     endResetModel();
     emit providersChanged();
 }
 
 QVariant ProvidersModel::data(const QModelIndex& index, int role) const
 {
     if (index.row() >= mProviders.count() || index.row() < 0)
         return QVariant();
 
     QVariant ret;
     switch (role)
     {
     case Qt::DisplayRole:
         ret = provider(index.row())->name();
         break;
     case Qt::DecorationRole:
         ret = provider(index.row())->icon();
         break;
     }
     return ret;
 }
 
 void ProvidersModel::addProvider(IDocumentationProvider* provider)
 {
     if (!provider || mProviders.contains(provider))
         return;
 
     int pos = 0;
     while (pos < mProviders.size() && mProviders[pos]->name() < provider->name())
         ++pos;
 
     beginInsertRows(QModelIndex(), pos, pos);
     mProviders.insert(pos, provider);
     endInsertRows();
 
     emit providersChanged();
 }
 
 void ProvidersModel::removeProvider(IDocumentationProvider* provider)
 {
     int pos;
     if (!provider || (pos = mProviders.indexOf(provider)) < 0)
         return;
 
     beginRemoveRows(QModelIndex(), pos, pos);
     mProviders.removeAt(pos);
     endRemoveRows();
 
     emit providersChanged();
 }
 
 void ProvidersModel::unloaded(IPlugin* plugin)
 {
     removeProvider(plugin->extension<IDocumentationProvider>());
 
     IDocumentationProviderProvider* providerProvider = plugin->extension<IDocumentationProviderProvider>();
     if (providerProvider) {
         foreach(IDocumentationProvider* provider, providerProvider->providers())
             removeProvider(provider);
     }
 }
 
 void ProvidersModel::loaded(IPlugin* plugin)
 {
     addProvider(plugin->extension<IDocumentationProvider>());
 
     IDocumentationProviderProvider* providerProvider = plugin->extension<IDocumentationProviderProvider>();
     if (providerProvider) {
         foreach(IDocumentationProvider* provider, providerProvider->providers())
             addProvider(provider);
     }
 }
 
 int ProvidersModel::rowCount(const QModelIndex& parent) const
 {
     return parent.isValid() ? 0 : mProviders.count();
 }
 
 int ProvidersModel::rowForProvider(IDocumentationProvider* provider)
 {
     return mProviders.indexOf(provider);
 }
 
 IDocumentationProvider* ProvidersModel::provider(int pos) const
 {
     return mProviders[pos];
 }
 
 QList<IDocumentationProvider*> ProvidersModel::providers()
 {
     return mProviders;
 }