[9fans] binary sprint format

[Adriano Verardo]

Hi, all

I'm trying to convert integers in text binary format by sprint(..., 
"%b", i),
but 8c issue a "format mismatch b INT" warning message.
Can anyone kindly explain  to me my mistake ?
Doesn't   "%b"  behave like the other integer  format specifications  ?

Thanks in advance

adriano