E21 / EFL 1.22.0 and Terminology 1.4.0 on VirtualBox 6.0.6 Metztli Reiser4 10GB Slice.

Giving a preliminary spin to Terminology 1.4.0 and its support and/or lack thereof copy/paste Cyrillic, etc. characters.

NOTE: As of Terminology version 1.4.99 (05-04-2019), it fully supports Cyrillic copy/pasting operations.

Install locales (you need root or super user privilege):

Shell

apt-get -t stretch-backports update
apt-get -t stretch-backports install locales

Check which locales you have:

Shell

locale -a

Install/reconfigure additional locales and/or set default locale:

Shell

dpkg-reconfigure locales

On a side note most of my virtual machines are built either in Reiser4/Zstd transparent compression and/or regular reiser4 formatted rootfs.

For a long time -- since VirtualBox 5.1.32 built under my hack of Debian Linux kernel 4.20 (GitHub) -- I struggled to understand why I was not able to reiser4 -format a 2TB slice in VirtualBox 6.x.y. any longer. Turns out that Debian packaging maintainers' default configuration setting for subsequent Linux kernels was modified:

from
# CONFIG_NUMA_BALANCING_DEFAULT_ENABLED is not set

to
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y

This setting prevents VirtualBox from fully supporting reiser4 --if at all-- because it corrupts even existing rootfs reiser4 -formatted virtual machines by sporadic, unpredictable hangs of the operating system.

Accordingly, the kernels that I build all have that setting reverted as:

CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=n

as it is a fact that I 'eat my own cooking' and the resulting reiser4 -patched kernels are used in turn to build VirtualBox releases for Metztli IT services.

References:
Enlightenment (E21) Window Manager
Eлена Ващенко : Elena Vashchenko
Russian Pattern Vector
Re: Reiser4 Linux 4.17.19-1 hangs in Google cloud VM, too.
How to install/change locale in Debian?