who is not wide-character aware

[petr . pisar]

Hello,

I'm working on Czech translation for coreutils. I've found out that if I use
UTF-8 locale and I translate the headers using wide characters, then the
heading of who command (who -H) will be badly aligned. And even some headers
can disappear.

I noticed this bug in coreutils-6.9 in locale cs_CZ.UTF-8 and messeages in
Czech PO catalogue like:

#: src/who.c:551
msgid "TIME"
msgstr "ČAS"

Headers following header _("TIME") are shifted to left. More wide characters
in traslatation shift the headers more left and after excedening a number of
them some headers are not visible.

It seems that print_line() in src/who.c counts bytes instead of characters.

-- Petr Pisar

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