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I have fixed the help to include only ascii characters ( represented in hex) so that conversion to bytes is represented in the help and also the terminal whose LANG is C is able to display them too.
On Ubuntu, when I had LANG=C, locale gave the following o/p and the previous help, (which broke for the Tuukka Tolvanen) was working fine too.
LANG=C
LANGUAGE=en_US:en
LC_CTYPE=en_US.UTF-8
LC_NUMERIC="C"
LC_TIME="C"
LC_COLLATE=en_US.UTF-8
LC_MONETARY="C"
LC_MESSAGES=en_US.UTF-8
LC_PAPER="C"
LC_NAME="C"
LC_ADDRESS="C"
LC_TELEPHONE="C"
LC_MEASUREMENT="C"
LC_IDENTIFICATION="C"
LC_ALL=
I guess, the original bug could be related to settings differing on gentoo. Anyways, the help docstring is changed now.