Re: Overlapping Extensions and UTIs in NSDocument

FROM : Markus Müller
DATE : Thu May 29 19:57:21 2008

Thank you for your answer. I filled a radar describing this issue.

Best regards,
Markus Müller

On Thu, May 29, 2008 at 4:55 PM, Sean McBride <<email_removed>>
wrote:

> On 5/29/08 3:20 PM, Markus Müller said:
>
> >Could it be that it's not allowed to have UTIs with overlapping
> extensions?
>
> Bingo.  LaunchServices does a 1-to-1 mapping between a file and a UTI.
> That is, a file can have only 1 UTI.  So if two UTI declarations claim
> the same extension you are screwed.  See the quicklook-dev archives for
> more info.  A workaround I tried was to use an HFS file type, but alas
> the system gives priority to extensions even in the case of conflict.
> So if you have 2 UTIs:
>
> 1)  UTI: com.UTI1
>  type: 'TEXT'
>    ext: .mm
>
> 2)  UTI: com.UTI2
>  type: 'FOO '
>    ext: .mm
>
> and ask LS for the UTI of a file that has extension .mm and type 'FOO '
> LS might return 'com.UTI1'.
>
> And please file a bug.  Mine come back 'behaves as expected' so I think
> Apple needs convincing.
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng                <email_removed>
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montréal, Québec, Canada
>
>