NSSavePanel Crashes on Big Sur
By now, I expected
NSSavePanel.allowedContentTypesto work, and then to have Xcode suggest to wrap access to that property in an if-@availableblock. But that doesn’t work at all. With macOS 10.15 Catalina being my main dev machine, I cannot use the new API at all at the moment, it seems, no matter what I set the deployment target to.[…]
It actually turns out that
public.csvis not a built-in file type recognized by macOS. The archived docs for UTIs list many UTIs, but not CSV.So make sure to check your assumptions when you write apps that export data without actually registering the exported file type UTIs!
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It's "public.comma-separated-values-text", a.k.a. the constant kUTTypeCommaSeparatedText.
Isn't the point of public.* that only Apple should maintain that? But, yeah, surely the process shouldn't outright crash upon encountering an unexpected type.
