mrlequoctuan/ibus-unikey — comment on commit 5742df98f30bae797c6d334dd9e1d1f5bb1fde97
File:  line 0
By myguidingstar:

The problem is that Vietnamese is the only language that don't want pre-edit. To solve this, there must be some modifications in ibus so that the option using pre-edit or not will be moved to engine level instead of global settings.