[Pkg-ime-devel] Bug#664201: ibus: wrong environment variable

[Osamu Aoki]

Hi Awashiro-san,

I did some check on QT4 source code. (qt4-x11-4.7.4)

$ grep -r QT.*_IM_MODULE *
inputmethods/imsw-multi/qmultiinputcontext.cpp:    QString def = QLatin1String(getenv("QT4_IM_MODULE"));
inputmethods/imsw-multi/qmultiinputcontext.cpp:        def = QLatin1String(getenv("QT_IM_MODULE"));

OK so there is no other place in this source mentioning QT_IM_MODULE or
QT4_IM_MODULE in the source.

src/plugins/inputmethods/imsw-multi/qmultiinputcontext.cpp has:

QMultiInputContext::QMultiInputContext()
    : QInputContext(), current(-1)
{
    keys = QInputContextFactory::keys();
    for (int i = keys.size()-1; i >= 0; --i)
        if (keys.at(i).contains(QLatin1String("imsw")))
            keys.removeAt(i);

    QString def = QLatin1String(getenv("QT4_IM_MODULE"));
    if (def.isEmpty())
        def = QLatin1String(getenv("QT_IM_MODULE"));
    if (def.isEmpty()) {
        QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
        settings.beginGroup(QLatin1String("Qt"));
        def = settings.value(QLatin1String("DefaultInputMethod"), QLatin1String("xim")).toString();
    }
...

So only when QT4_IM_MODULE is not defined, QT_IM_MODULE value is used.
If both are undefined, "xim" used as its default value.

So there is no need to set both values.  Use of QT4_IM_MODULE seems good
choice for me.  Am I wrong?

Osamu