/usr/share/language-selector/data/im-switch.blacklist is in language-selector-common 0.79.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | none
default
default-xim
th-xim
scim-chewing
scim-pinyin
|