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Changes between Initial Version and Version 1 of Ticket #36965, comment 6

initial	v1
17	17
18	18	FYI: I'm using PHP 5.4.45 under Windows 10 1511
	19
	20	Edit: Just to clarify, this happens because `$temp_filename()` attempts to strip the extension from files, and since the `.maintenance` is only extension it ends up empty, and then calls itself recursively passing in the result of a call to `dirname()`