[Lazarus] substr return wrong string with some utf8 char

[Hans-Peter Diettrich]

Michael Schnell schrieb:

> With a future "NewStrings" implementation I mean a dynamically coded 
> string typed that can hold e.g. "ASCII code page xxxx", "UTF8", "UTF16", 
> or "UTF32" content and knows about what is stored and how.

How would you determine the byte count for reading and writing text?

> So "Length" 
> with this type can be defined as "character count" and copy can work on 
> character length and position, and automatically convert strings if they 
> are coded differently.

I don't like automatic string conversion, because:
> Of course certain operations might be really slow if the encoding of the 
> data is not appropriate.

Consider what will happen when every procedure or component has its 
*own* idea of the "appropriate" encoding...

DoDi