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Re: Plain Text UTI Madness

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Re: Plain Text UTI Madness

Subject: Re: Plain Text UTI Madness
From: Gregory Weston <email@hidden>
Date: Thu, 29 Jan 2009 16:48:00 -0500

Sean McBride wrote:

I have a file without an extension, which in Finder is shown as "Plain text", has kMDItemKind = "Plain text", and yet kMDItemContentType is "public.data" -- what gives? Why is it a plain text "kind" of file, but not public.plain-text?
Does this extension-less file have an HFS type?
Nope. It has no extension or HFS type. Which makes me totally
understand why the UTI says it's plain.data
Note also that the system always prioritizes extension over HFS type.

Except when it doesn't. Assuming the documentation for Launch Services is correct, things are bit more complex than that.

Consider the explanation here for determining the preferred app for a document.

<http://developer.apple.com/documentation/Carbon/Conceptual/LaunchServicesConcepts/LSCConcepts/chapter_2_section_8.html >

If extension is given priority over type code in this process, it's an implementation detail that's explicitly not guaranteed. _______________________________________________

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