The ruby team intends to file a stable request for ruby 1.9 in a week or
so. Most packages using ruby use the ruby-ng and ruby-fakegem eclasses
where the RUBY_TARGETS mechanism selectively handles ruby 1.9
compatibility. However, there are also packages depending directly on
dev-lang/ruby, and some of these may have compatibility issues. If you
are maintaining such a package, then please have a look at
compatibility, preferably before we file the stable request.
Please not that testing requires temporarily selecting ruby19 using
eselect. When in doubt and out of time for testing you might want to
change your dependency to refer to dev-lang/ruby:1.8 instead.
If you have questions or concerns, please let us know.