Toggles transfers in binary mode and yields to a block. This preserves your
current binary send mode, but allows a temporary transaction with binary
sendmode of newmode.
newmode is either true or false
# File lib/net/ftp.rb, line 304
def with_binary(newmode) # :nodoc:
oldmode = binary
self.binary = newmode
begin
yield
ensure
self.binary = oldmode
end
end