|  | # Create two directories for further comparison.
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							|  | # RUN: rm -rf %t/dir1 %t/dir2
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							|  | # RUN: mkdir -p %t/dir1 %t/dir2
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							|  | 
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							|  | # Empty file vs directory mismatch, diff -r should fail.
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							|  | # RUN: echo -n > %t/dir1/extra_file
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							|  | # RUN: mkdir -p %t/dir2/extra_file
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							|  | # RUN: diff -r %t/dir1 %t/dir2
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