It works fine here:
regress=> WITH t_exp_types(exp_id, exp_type) AS (VALUES (3, 'храна'), (11, 'почивка'), (12, 'превод'), (15, 'изравнителен превод'))
regress-> select '>'||exp_type||'<', exp_id from t_exp_types where exp_id in (3,11,12,15);
?column? | exp_id
-----------------------+--------
>храна< | 3
>почивка< | 11
>превод< | 12
>изравнителен превод< | 15
(4 rows)
Fedora 19, Konsole 2.11.2 from KDE 4.11.2. My locale is:
$ locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
Odd symptoms, though; a simple client_encoding
mismatch would mangle the characters, not just the whitespace.