This file is indexed.

/usr/share/GNUstep/Libraries/gnustep-base/Versions/1.25/Resources/Languages/Locale.encodings is in gnustep-base-common 1.25.1-2ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

1
2
3
{
    th_TH = NSISOThaiStringEncoding;
}