Nobuyoshi Nakada wrote:
> Hi,
> 
> At Fri, 20 Feb 2009 19:17:10 +0900,
> Akinori MUSHA wrote in [ruby-core:22286]:
>> However, there needs some more work to retain the use of
>> colon in place of then/do, in order to keep backward
>> compatibility, although it has been deprecated and dropped in
>> 1.9.
> 
> No such syntax has been defined officially.
> No backward compatibility issue.

What do you mean here in "official"? because AFAIK there has been no single
line of official syntax definitions so far.