Re: BUG #19539: psql 17.6 on Windows 11 prints random garbage characters in Russian localized output of \d

On Tue, Jun 30, 2026 at 3:12 AM PG Bug reporting form
<noreply(at)postgresql(dot)org> wrote:
> When running \d <table> in Russian localization, the output sometimes
> contains random garbage Unicode characters immediately after the localized
> header "По умолчанию".
>
> Example:
>
> Таблица "public.articles"
> Столбец | Тип | Правило сортировки | Допустимость NULL | По умолчанию
> ⫐鄢ʧ
>
> The garbage characters change every execution.

Do any other languages show clues? Could you please try Ukrainian,
Greek, Japanese?

#: describe.c:2070 describe.c:4572
msgid "Default"
msgstr "По умолчанию"

headers[cols++] = gettext_noop("Default");

That is then fed through pg_wcsformat(). I wonder if that could be
confused about encodings and NUL terminators or something, but I don't
have a specific theory. Could you please locate the relevant psql.mo
file and share it, so we can check it contains the expected byte
sequence?