IO class in Ruby 1.9

Question

Dear experts, Is there anything new with IO class in Ruby 1.9? I was trying to use IO.readlines but somehow it did not parse correctly (truncate few characters prior to .)

INPUT:

abc.csv: [email protected]

f_profiles = "abc.csv"
emails = IO.readlines(f_profiles)

OUTPUT:

emails = ["[email protected]"]

Thanks,