Non-ASCII identifiers (was: Re: [fpc-devel] Forwarded message about FPC status)

[Martin]

On 24/12/2012 12:17, Marco van de Voort wrote:
> In our previous episode, Mark Morgan Lloyd said:
>>> too. So if somebody implements non ASCII identifiers because he needs a
>>> second source Delphi compiler it will be merged because the addition does not
>>> break existing code. I assume utf-8 identifiers would not be very difficult
>>> to do in compiler.
>> But what will the rule be as to whether something's a valid identifier?
>> Will it have to start with something known to be a letter, or something
>> not known to be a digit or reserved character?
> Afaik the latter. You specify what is not allowed rather than which are
> allowed.
>

Hm that makes it easy to have an incomplete list, that could later 
become a problem

half-width spaces etc..., control chars (RTL/LTR...), currently unused 
codepoints (that could become anything in future...)