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Too long file paths. Should I really care?

Whilst testing my app's ability to cope with documents that cause CFURLCreateFromFSRef to fail due to path length restrictions I thought I'd see how other stuff in the system copes with such files.

In short, the answer is appallingly, so I am thinking that maybe I really shouldn't care. From my own testing it seems that no-one would actually be able to work with such a document anyway. (FYI - my app doesn't create or edit any documents, it just works with them in other ways.)

E.g.

Finder
Once you drag something into a folder that makes its path too long, you can no longer drag it out again.

You can't use Open With as that calls down to LSCopyApplicationURLsForURL and the URL is duff. (Why no LSCopyApplicationURLsForRef ?)


Cocoa apps
You cannot open any such document or save a document to such a place. No user feedback apart from dimmed Open/Save buttons in Open/Save dialogs. Double-clicking them in the Finder does nothing.


Carbon apps
You can double-click them to open them, but attempting to use Nav Services to open or save them will crash the app whilst trying to update the Recent Documents:

0   com.apple.CoreFoundation           0x90737b9c CFURLGetString + 52
1   com.apple.NavigationServices       0x930770a0 TBrowseDialog::SaveDialogPrefs() + 876
2   com.apple.NavigationServices       0x93076b28 TBrowseDialog::TerminateDialog() + 88
3   com.apple.NavigationServices       0x93076a90 _NavDialog::TerminateWithUserAction(unsigned long) + 72


Spotlight
Never finds such a file.


Classic apps
No problems at all :)


So given that I haven't heard of hoards of users storming Infinite Loop with pitch forks and burning sticks complaining about these problems I really do think that it is a moot point.

Any comments?

Matt Gough
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