Print to log file without newline

i have logger print file:

logger = logger.new rails.root.join 'log/my.log'

how can print several dots in 1 line in different logger calls?

i.e., if do

some_array.each |el|   logger.info '.'   el.some_method end

these dots printed in different lines.

the << method lets write messages without formatting log file.

for example:

require 'logger'  log = logger.new "test.log" log.info "start" 5.times { log << "." } log << "\n" log.info "end"

produces:

i, [2014-03-10t15:11:04.320495 #3410]  info -- : start ..... i, [2014-03-10t15:11:42.157131 #3410]  info -- : end

unfortunately, doesn't let write same line previous calls log.info

And