On Sep 21, 2011, at 03:10 , Gerriet M. Denkmann wrote:

> I got from reading the documentation that UTIs are the modern way to go.
> 
> NSAttributedString.h says "for reading, thNSFileTypeDocumentAttributes is 
> available along with NSDocumentTypeDocumentAttribute, but for writing the two 
> are mutually exclusive"
> 
> So I decided to replace NSDocumentTypeDocumentAttribute in my 
> documentAttributes with thNSFileTypeDocumentAttributes which contain a UTI 
> string.
> 
> Previously I had:
> 
> 2011-09-21 17:01:46.497 TextEditor[2950:2403] -[TestDocument 
> fileWrapperOfType:error:] will with documentAttributes {
>    CharacterEncoding = 4;
>    DocumentType = NSPlainText;
>    UTI = "public.plain-text";
> }
> - worked fine.
> 
> 
> But now, with using the UTI stuff I get:
> 
> 2011-09-21 16:55:25.551 TextEditor[2897:5203] -[TestDocument 
> fileWrapperOfType:error:] will with documentAttributes {
>    CharacterEncoding = 4;
>    UTI = "public.utf8-plain-text";
> }
> 2011-09-21 16:55:25.553 TextEditor[2897:5203] -[TestDocument 
> fileWrapperOfType:error:] Error Error Domain=NSCocoaErrorDomain Code=66062 
> "File could not be saved because the specified format is not supported."
> 
> 
> So - should I just ignore all the hype about UTIs, or what?

It looks like you're mixing up the NSAttributedString "document" type with the 
NSDocument document type. It doesn't look like they have anything to do with 
each other.

It also looks like you're doing something wrong  (or, rather, making some wrong 
assumptions) in an override of 'fileWrapperOfType:error:', but you haven't 
given us enough information to be sure.


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