# Code Review: Ruby 1.8.7 and 1.9 compat improvements

**URL:** <https://www.ruby-forum.com/t/code-review-ruby-1-8-7-and-1-9-compat-improvements/183641>\
**Category:** IronRuby\
**Created:** [February 18, 2010, 12:37am UTC](https://www.ruby-forum.com/t/code-review-ruby-1-8-7-and-1-9-compat-improvements/183641 "2010-02-18T00:37:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Shri\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/898d66/32.png) [@Shri\_B](https://www.ruby-forum.com/u/Shri_B)\
**Post date:** [February 18, 2010, 12:37am UTC](https://www.ruby-forum.com/t/code-review-ruby-1-8-7-and-1-9-compat-improvements/183641/1 "2010-02-18T00:37:21Z")

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tfpt review “/shelveset:r187;REDMOND\sborde”

Comment :

I wanted to get a feel for where were with Rails 3 compat. For V1 RTM,  
we can have a crisper message like “IronRuby 1.0 supports Rails 2.3.5.  
Rails 3 tests pass at 98%, and full support will follow after the 1.0  
RTM”. I started off looking at the -19 mode but gave up on that after I  
could not get MRI 1.9 to install 1.9 gems (1.9 must include a different  
version of RubyGems, and I could not use the existing 1.8 gems)

1.8.7 related changes

- Adds -187 command line option
- Enables ActionPack 3.0.pre tests in irtests
- Adds Object#tag
- avoids an ArgumentException(“Illegal characters in path”) that was  
happenning when a bad file name string was passed in to eval
- Adds String#start\_with? and String#end\_with?
- RUBY\_VERSION is tied to the command-line argument specified

1.9 related changes

- Adds Integer#fdiv
- Allows calling convention argument to Win32API.new