get_character waits for `Enter'

[stomar]

The following does not work as expected, it requires the 'Enter' key to be pressed. A couple of months ago it worked just fine.
Update: This regression was introduced with version 1.6.14.

require 'highline/system_extensions'
input = HighLine::SystemExtensions.get_character

ruby 1.9.3p194 (2012-04-20 revision 35410) [i686-linux]
highline (1.6.15)
stty 8.13

(termios library not installed)

[JEG2]

The behavior of this module has changed a little. You must now invoke "no echo" mode when desired:

$ ruby -e 'require "./lib/highline/system_extensions"; HighLine::SystemExtensions.raw_no_echo_mode; c = HighLine::SystemExtensions.get_character; HighLine::SystemExtensions.restore_mode; p c'

[alexch]

Can we make that little incantation be toggled by a parameter to get_character instead? And are we sure it works on all platforms?