Meinrad Recheis wrote:
> On 5/27/07, Austin Ziegler <halostatue / gmail.com> wrote:
>> Can we get a --warn19 flag added to the Ruby 1.8 branch that will
>> print warnings on things that are changing about the language?
> 
> What a great idea. I'd very appreciate such a feature too, but who has
> the time to precisely record all those differences and extend the 1.8
> interpreter? Seems to be quite a lot of work to me. I mean precisely
> recording all the changes is enough work. It would be much easier to
> summarize all those changes on the official ruby homepage or something
> like that. If it were done in a wiki, all the readers of the newsgroup
> could do it together!

For what it's worth, we'd appreciate such a list as well. We plan to 
start implementing JRuby 1.9/2.0 semantics in JRuby very soon, with a 
flag to turn them on (for those wanting to start using the new 
features). A flag for 1.8-mode that warns about 1.9 features would be 
useful too.

- Charlie