Improve tab title for file history diffs

addons/project/filehistorywidget.cpp

@@ -287,6 +287,6 @@ void FileHistoryWidget::itemClicked(const QModelIndex &idx)
         QByteArray contents(git.readAllStandardOutput());
         // we send this signal to the parent, which will pass it on to
         // the GitWidget from where a temporary file is opened
-        Q_EMIT commitClicked(contents);
+        Q_EMIT commitClicked(contents, QString::fromUtf8(commit.hash.mid(0, 7)));
     }
 }

addons/project/filehistorywidget.h

@@ -31,7 +31,7 @@ private:
 
 Q_SIGNALS:
     void backClicked();
-    void commitClicked(const QByteArray &contents);
+    void commitClicked(const QByteArray &contents, const QString &commit);
     void errorMessage(const QString &msg, bool warn);
 };
 

addons/project/kateprojectview.cpp

@@ -156,9 +156,10 @@ void KateProjectView::showFileGitHistory(const QString &file)
 
     auto fhs = new FileHistoryWidget(dotGitPath.value(), file);
     connect(fhs, &FileHistoryWidget::backClicked, this, &KateProjectView::setTreeViewAsCurrent);
-    connect(fhs, &FileHistoryWidget::commitClicked, this, [this, file](const QByteArray &diff) {
+    connect(fhs, &FileHistoryWidget::commitClicked, this, [this, file](const QByteArray &diff, const QString &commit) {
         auto mw = m_pluginView->mainWindow()->window();
-        QMetaObject::invokeMethod(mw, "showDiff", Q_ARG(QByteArray, diff), Q_ARG(QString, file), Q_ARG(QString, {}));
+        const QString name = QStringLiteral("%1[%2]").arg(file, commit);
+        QMetaObject::invokeMethod(mw, "showDiff", Q_ARG(QByteArray, diff), Q_ARG(QString, name), Q_ARG(QString, {}));
     });
     connect(fhs, &FileHistoryWidget::errorMessage, m_pluginView, [this](const QString &s, bool warn) {
         QVariantMap genericMessage;