Hi,

In message "Re: [ruby-core:22625] [Bug #1238] invalid multibyte char (US-ASCII)"
    on Tue, 3 Mar 2009 00:41:30 +0900, Ivan Petrov <redmine / ruby-lang.org> writes:

|script that working good earlier(1.8.7) breaks trying print "ۧܧ֧\n" (russian cyrillic simbols)
|my OS Ubuntu, Ruby version 1.9.1-p0

You have to disclose your script, but you need to put "magic comment"

# coding: utf-8

for example, to the top of your non-ASCII script.

							matz.