Can't save a document with ".dat" as an extension about hexfiend HOT 12 CLOSED

@percontation looks like this from 78acc50 - why are specific file types listed in the plist? Why leave it as it was and allow all file types?

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Without specific UTIs, HexFiend doesn't appear in Finder's "Open With..." menu. (For a given file, Finder only shows an app in the "Open With..." menu if it matches an explicit UTI). I added the most common UTI superclasses so HexFiend would be an option many files' "Open With..." options.

I bet this bug came up due to a combination of new OS X 10.10 saving behavior, and the fact that on my system VLC has assigned some weird UTI to .dat files.

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Works for me with a build from Xcode 8.1 on 10.12.1.

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@kainjow: What about if you try saving with a name like test.bundle? The problem is with extensions that are bound to a UTI that does not inherit from one listed in the CFBundleDocumentTypes. I still see this issue on 10.11.

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I get that dialog if I choose "Data". If I select "All Types" .dat and .bundle work.

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Ah, yeah. I guess we should find a way to kill that section of the dialog (and always do whatever All Types is doing).

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Apparently NSSavePanel has allowsOtherFileTypes. in BaseDataDocument's prepareSavePanel: I set that to YES, and it allowed saving as .jpg when Data was selected.

So then do we need the Other and Data document types in Info.plist?

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Yes, to support Open With > Hex Fiend from the Finder context menu.

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allowsOtherFileTypes still requires using allowedFileTypes to set which other file types are allowed, so even with that set it still warns about .bundle when Data is selected, but if I set allowedFileTypes to kUTTypeBundle then it works. So technically if we got all known UTIs we could manually list them, but that seems clunky.

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Hmm, does adding

    savePanel.allowedFileTypes = nil;
    savePanel.allowsOtherFileTypes = YES;

to that prepareSavePanel method at least partially fix this for you? I can still manage pop the "(null)" dialog though some combination of first saving as "Other" and then trying to Save As "Data"... but at least the case of wanting to save a new document with a weird extension seems to work with those properties set.

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Actually I'm not sure allowsOtherFileTypes actually made any difference, now that I'm trying to test again without it and can still save with .jpg. I cannot either way save with .bundle unless I use AllTypes.

Since this is an OS X bug and using AllTypes solves the problem, maybe we shouldn't worry too much about workarounds?

The use of CFBundleTypeOSTypes is deprecated as of 10.5 anyways, so it's bound to stop working at some point.

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8c44e6e removed the file type option altogether. Saving with .dat or .bundle works. I'm closing this again.

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