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<?php printf("%’%x", "foo", PHP_INT_MAX);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ValueError: Unknown format specifier "�" in /in/uK1pp:2 Stack trace: #0 /in/uK1pp(2): printf('%\xE2\x80\x99%x', 'foo', 9223372036854775807) #1 {main} thrown in /in/uK1pp on line 2
Process exited with code 255.

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