From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-04-05T04:40:43+09:00
Subject: Ruby 1.9.1 - invalid multibyte escape: /[\xC0-\xDF]/ (RegexpError)

Hi, using TreeTop parser I had a grammar defined working in Ruby1.8 but it 
fails in 1.9.1:

  ~# ruby1.8 -e "Regexp.new('[\xC0-\xDF]')"
  OK

  ~# ruby1.9 -e "Regexp.new('[\xC0-\xDF]')"
  -e:1:in `initialize': invalid multibyte escape: /[\xC0-\xDF]/ (RegexpError)

I've found the following text about differences between 1.8 and 1.9:

"It is more rigorous that 1.8 when it comes to detecting invalid code. For 
example, 1.8 accepts /[^\x00-\xa0]/u, while 1.9 complains of invalid multibyte 
escape"

Ok, so how should I write the above Regexp to work on 1.9.1?

Thanks a lot.


-- 


Iñaki Baz Castillo <ibc@aliax.net>