Some may find the following Apple Insider article on the the topic
useful:
Inside Snow Leopard's UTI: Apple fixes the Creator Code
http://www.appleinsider.com/articles/09/09/22/inside_snow_leopards_uti_apple_fixes_the_creator_code.html
On Sep 23, 2009, at 9:11 AM, Jens Alfke wrote:
On Sep 23, 2009, at 9:06 AM, Gerriet M. Denkmann wrote:
So I looked at Launch Services Reference, but could not figure out,
how to inform Lauch Services which app to use for some document.
But if Finder can tell Lauch Services, then my app should be also
able to do this, shouldn't it?
Where should I look?
My guess is there's some new extended file attribute being used to
store this. You could use command-line tools ('xattr', I think) to
inspect the attributes of a file before and after changing its
default app.
Todd
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