$ LC_ALL=es_NI locale -k LC_MONETARY | grep currency_symbol currency_symbol="$C" duo_currency_symbol="$C"
Happens in both glibc-2.11.2-1 (f12) and glibc-2.12-2 (f13).
$ LC_ALL=es_NI locale -k LC_MONETARY | grep currency_symbol symbol= "$C" symbol= "$C"
currency_
duo_currency_
Happens in both glibc-2.11.2-1 (f12) and glibc-2.12-2 (f13).