On 18 Apr 2011, at 21:42, Christian Galinski wrote:

> Dear Colleagues,
>  
> I agree with François: ISO 639-1
> - should not be increased without very stringent reasons,

I understood that there was no rationale for any addition at all.

> - may have to be modified, if necessary by a modification of a corresponding 3-letter symbol,

Can you suggest an example of such a modification?

> - very unlikely, but may have to be modified for other reasons,

Can you suggest an example of such a modification?

> and in that sense it is stabilized.

That is not ISO formal stabilization (which we have for instance for ISO/IEC 8859-1)

Michael Everson * http://www.evertype.com/