Ruby Regex Error: incompatible encoding regexp match (ASCII-8BIT regexp with UTF-8 string)

Question

I'm getting two errors, both revolving around encoding and both related.

The first error (technically, a warning) I get when starting up WEBrick:

/Users/USERNAME/example/config/initializers/bb-ruby.rb:54: warning: invalid Unicode Property \P: /\:\-?\P/

The line it's referring to is: /\:\-?\P/,

It's just a bit of regex, ultimately part of this block:

@@tags['Razzing'] = [
  /\:\-?\P/,
  '<img src="/assets/emoticons/razzing.png">',
  'Razzing',
  ':P',
  :razzing]

Then, I also get the following error when parsing some strings (presumably due to this same line)...

Encoding::CompatibilityError
incompatible encoding regexp match (ASCII-8BIT regexp with UTF-8 string)

I'm running Ruby 1.9.2 and Rails 3.2.1.

Fábio Batista · Accepted Answer · 2013-09-23 04:01:36Z

27

Your Regex is being "compiled" as ASCII-8BIT.

Just add the encoding declaration at the top of the file where the Regex is declared:

# encoding: utf-8

And you're done. Now, when Ruby is parsing your code, it will assume every literal you use (Regex, String, etc) is specified in UTF-8 encoding.

UPDATE: UTF-8 is now the default encoding for Ruby 2.0 and beyond.

edited Sep 23, 2013 at 4:01

answered Mar 25, 2012 at 2:37

Fábio Batista

25.3k3 gold badges58 silver badges70 bronze badges

Sign up to request clarification or add additional context in comments.

7 Comments

Shpigford Over a year ago

That stopped the Encoding::CompatibilityError error, but I'm still getting the invalid Unicode Property warning when starting up Webrick.

Fábio Batista Over a year ago

The Regex engine changed on Ruby 1.9… I don't know what you meant by \P originally, but now it is used to match Unicode code points, and it requires a parameter (like \P{L}, to match any non-letter character). See: regular-expressions.info/unicode.html

Shpigford Over a year ago

I'm trying to match this: :-P or :P (as in emoticon sticking tongue out)...how would I do that now?

Patrick Oscity Over a year ago

omit the backslash before the P

Fábio Batista Over a year ago

@knagode I'd recommend you open a new, well-written question for your case. It's very hard to help in the comments section.

|

Nil Liu · Accepted Answer · 2015-03-10 11:50:00Z

5

Ruby 2.0 Document

/Pattern/u - stand for UTF-8

answered Mar 10, 2015 at 11:50

Nil Liu

511 silver badge4 bronze badges

Collectives™ on Stack Overflow

Ruby Regex Error: incompatible encoding regexp match (ASCII-8BIT regexp with UTF-8 string)

2 Answers 2

7 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

7 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related