ledger and currency format in entry command

[Alexandre Rademaker]

OK. My problem is not with ledger mode, but with ledger entry command. If I 
omit the commodity in the entry command the dot is recognized as thousands 
separator rather than decimal separator:

$ ledger -f BR01.dat entry 05/13 Salsa Resta 12.00 Cash

2011/05/13 Salsalito
    Expenses:Restaurante                       1.200
    Assets:Cash        

$ ledger -f BR01.dat entry 05/13 Salsa Resta 12,00 Cash

2011/05/13 Salsalito
    Expenses:Restaurante                       12,00
    Assets:Cash        


But the question is why is ledger using comma as default decimal separator 
if I have in my ledger file BR01.dat the line:

D $1,000.00

Any idea?