IBus im-switch file is broken

[PCMan]

After I use im-switch to set ibus as default input method, environment variables are not correctly set for it.
in /etc/X11/xinit/xinput.d/ibus, this command doesn't seem to work.
if [ -e /usr/lib/gtk-*.0/*/immodules/im-ibus.so ]; then
    GTK_IM_MODULE=ibus
fi

$GTK_IM_MODULE is always set to XIM and using XIM crashes several applications, one of which is Google Chrome.
I have both gtk2 and gtk3 ibus modules installed and the files are all in the right places.
Please check if the script really works. For me, it failed to set correct GTK_IM_MODULE.

This script has a potential problem. When only one of gtk2 or gtk3 module was installed, both gtk2 and gtk3 programs will try to load im module of ibus. However, only one of gtk2 and gtk3 has im module installed. This is a rare case, though.

[Ikuya Awashiro (ikuya-fruitsbasket)]

Maybe this issue is same as https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/823202 .