(MODULES-1976) Revise rule name validation for ruby 1.9

[karmix]

Note: This test will only fail for ruby 1.9 and above. I was unable to find a way to reproduce the character encoding functionality introduced in 1.9 on previous versions of ruby in order to construct a test that is useful in those environments.

[bmjen]

Thanks for the contribution @karmix! The parser in this module isn't something we like to modify too frequently. Do you have a specific reason for wanting special characters in the rule name?

[jonnytdevops]

Hi There

Is this related to #513 at all?

Thanks

[karmix]

No. These are different issues. I encountered them separately.

Thanks

[jonnytdevops]

Hi Karmix

I'm a bit confused about your statement "This test will only fail for ruby 1.9 and above". Are you saying that your changes wont work on Ruby >=1.9, or that your changes have fixed an issue that would have occured on Ruby >=1.9 otherwise?

Thanks

[karmix]

This patch addresses a difference in the way unicode and non-unicode strings match regular expressions in Ruby >= 1.9. What I was trying to say was that the test I added to spec/fixtures/iptables/conversion_hash.rb will never fail on Ruby < 1.9, where unicode support is not present.