Regex incompatibility between MRI and JRuby
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Key: JRUBY-5108
URL: http://jira.codehaus.org/browse/JRUBY-5108
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.5.2
Environment: JRuby 1.5.2, Java 6
Reporter: Tobi Knaup
Assignee: Thomas E Enebo
Priority: Minor
The following simple regular expressions produce different results in MRI and
JRuby:
p ("1 " =~ /(\d\s?){2}/) # => nil in MRI, 0 in JRuby
p ("1 " =~ /([0-9]\s?){2}/) # => nil in MRI, 0 in JRuby
p ("1 " =~ /(\S\s?){2}/) # => nil in MRI, 0 in JRuby
p ("a " =~ /(\S\s?){2}/) # => nil in MRI, 0 in JRuby
p ("a " =~ /([a-z]\s?){2}/) # => nil in MRI, 0 in JRuby
Expected behavior is that of MRI.
These related ones produce same results:
p ("1 " =~ /(\w\s?){2}/) # => nil
p ("a " =~ /(\w\s?){2}/) # => nil
Tested versions:
1.9.2 p0 x86_64-darwin10.4.0
1.8.7 p174 universal-darwin10.0
1.8.6 p111 x86_64-linux
JRuby 1.5.2
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