[wp-trac] [WordPress Trac] #31811: Update error: not able to create directory

[WordPress Trac]

#31811: Update error: not able to create directory
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 Reporter:  afragen          |       Owner:
     Type:  defect (bug)     |      Status:  new
 Priority:  normal           |   Milestone:  4.2
Component:  Upgrade/Install  |     Version:  trunk
 Severity:  normal           |  Resolution:
 Keywords:                   |     Focuses:
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Comment (by dd32):

 As I somewhat suspected, it's because it tries to create a folder called
 `0`, whereas previously it tried to create one called `0.tmp`, as the
 basename of the URL it's downloading is `0` (ie. the file is `0.7.3`).

 That changed in #30945.

 What I suspect is happening, is something is calling `empty()` on the
 directory name (`0`), but i'm not sure where yet.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31811#comment:3>
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