legal identifier check

[BCS]

Hello Saaa,

>> You have to write it yourself. Here's a good starting point:
>> http://www.digitalmars.com/d/1.0/lex.html#identifier
>> 
> Yes, that was my starting point and it seemed quite complex, thus my
> question :)
> I think I'll stay with my simple check for now as it isn't really
> necessary
> to be as strict as D's identifiers.
> Just thought that if there was an easy check I'd implement that.
> Thanks anyways everybody.

if you are only working with ASCII: use the regex `_A-Za-z[_A-Za-z0-9]*`