Search by kMDItemKind produces incorrect results

Originator:pierre.bernard
Number:rdar://19511082 Date Originated:
Status:Open Resolved:
Product:OS X SDK Product Version:10.10
Classification: Reproducible:
 
Summary:
Searches for files where kMDItemKind is different from a specified value produce incorrect results.

Steps to Reproduce:
On an English language system, the following queries should not produce any results:

mdfind "(kMDItemKind == 'Property List'c) && (kMDItemKind != 'Property List'c)"

mdfind "(kMDItemKind == 'Property List'c) && (!  (kMDItemKind == 'Property List'c))"

mdfind -onlyin . "(kMDItemKind == 'Portable Document Format (PDF)'c)  && ( ! ((kMDItemKind == 'Portable Document Format (PDF)'c)  ))"


Expected Results:
Searching for files where kMDItemKind both is equal to and different from a same value should not produce results.

Actual Results:
The queries produce results. They however behave as if the second clause was omitted:

~ (pierre)> mdfind "(kMDItemKind == 'Property List'c) && (kMDItemKind != 'Property List'c)" | wc -l
   28382
~ (pierre)> mdfind "(kMDItemKind == 'Property List'c) && (!  (kMDItemKind == 'Property List'c))" | wc -l
   28382
~ (pierre)> mdfind "(kMDItemKind == 'Property List'c)" | wc -l
   28382

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