Give me a break

[Walter Bright]

Jason House wrote:
> Walter Bright Wrote:
> 
>> If there's more I can do to make this work, I would like to know
>> what that is.
> 
> I know D does not burden itself with backwards compatibility,

That's not quite correct. I have strongly resisted any changes to D2 
that would *silently* break programs. The breaking changes elicit clear 
messages from the compiler.

> but the
> lack of compatibility has to affect many D projects. There are many
> D1-only projects that can't be used within D2. When D3 is  started,
> will we have even more incompatible choices? I have no solution to
> this issue, but it deserves some thought.
> 
> In the past, I proposed the idea of forward compatibility which would
> allow a D1 compiler to ignore D2-specific keywords and other minor
> semantic differences such as invariant()... The idea wasn't 100%
> compatibility, but rather to allow writing a reasonable subset of D2
> that could compile in D1. Maybe a 3rd party tool to do the
> translation is enough?

The problem is that creates a third language.