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investigating UTI issues we found for some users of https://pdfviewer.io/ in support...
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| // iOS 11 (my iPad + iPhone) | |
| (lldb) po UTTypeCopyDeclaration(kUTTypePDF) | |
| { | |
| UTTypeConformsTo = ( | |
| "public.data", | |
| "public.composite-\U200bcontent" | |
| ); | |
| UTTypeDescription = PDF; | |
| UTTypeIdentifier = "com.adobe.pdf"; | |
| UTTypeTagSpecification = { | |
| "public.filename-extension" = ( | |
| ); | |
| "public.mime-type" = ( | |
| "application/pdf" | |
| ); | |
| }; | |
| } | |
| (lldb) p (BOOL)UTTypeConformsTo(kUTTypePDF, kUTTypeCompositeContent) | |
| (BOOL) $15 = NO | |
| (lldb) po kUTTypeCompositeContent | |
| public.composite-content | |
| (lldb) p (BOOL)UTTypeConformsTo(kUTTypePDF, kUTTypeData) | |
| (BOOL) $17 = YES | |
| (lldb) | |
| // iOS 11 (Simulator) | |
| (lldb) po UTTypeCopyDeclaration(kUTTypePDF) | |
| { | |
| UTTypeConformsTo = ( | |
| "public.data", | |
| "public.composite-content" | |
| ); | |
| UTTypeDescription = "PDF document"; | |
| UTTypeIconFiles = ( | |
| "pdf_20x20.png", | |
| "pdf_20x20@2x.png", | |
| "pdf_145x145.png", | |
| "pdf_145x145@2x.png" | |
| ); | |
| UTTypeIdentifier = "com.adobe.pdf"; | |
| UTTypeTagSpecification = { | |
| "public.filename-extension" = ( | |
| ); | |
| "public.mime-type" = ( | |
| "application/pdf" | |
| ); | |
| }; | |
| } | |
| (lldb) p (BOOL)UTTypeConformsTo(kUTTypePDF, kUTTypeCompositeContent) | |
| (BOOL) $1 = YES |
\U200b is a zero-width space. Damn you, unicode.
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The above is iOS 11b3 on both my iPad and my iPhone. Not sure what app corrupted the UTT but it seems there is a bug.