#include <QSettings>
#include <QDebug>
#include <QStringList>

bool readTest(QIODevice&, QSettings::SettingsMap &map)
{
    map.insert("Test/Test1", "test1");
    map.insert("/Test/Test2", "test2"); // <- this makes trouble...
    return true;
}

bool writeTest(QIODevice&, const QSettings::SettingsMap&)
{
    return true;
}

int main()
{
    /* Note, the file ~/.config/test/test.settings must exist. */

    QSettings::Format testFormat = QSettings::registerFormat( "settings", readTest, writeTest );
    QSettings settings(testFormat, QSettings::UserScope, "test", "test");

    qDebug() << settings.allKeys().size();

    foreach(QString key, settings.allKeys())
        qDebug() << key << settings.value(key);

    /* Note, this works even though we haven't inserted a setting with this
     * name. We have inserted "Test/Test1"(no preceding slash). */
    qDebug() << "value() with leading /" << settings.value("/Test/Test1");

    /* This doesn't work.
     */
    qDebug() << "value() with leading /" << settings.value("/Test/Test2");

    // Conclusion: somewhere slashes are being stripped. */
    //
    return 0;
}