[wp-trac] [WordPress Trac] #57074: Remove extra slashes when concatenating ABSPATH with a path

[WordPress Trac]

#57074: Remove extra slashes when concatenating ABSPATH with a path
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 Reporter:  TobiasBg          |      Owner:  (none)
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  6.2
Component:  General           |    Version:
 Severity:  normal            |   Keywords:  has-patch
  Focuses:  coding-standards  |
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 Follow-up to @emanuelx's findings in #57071:

 `ABSPATH` is defined and documented to end with a forward slash `/`.
 In some Core files, a string that begins with a `/` is appended, leading
 to `//` in the resulting path.
 While this usually doesn't lead to issues, it at least brings confusion.

 Searching for `ABSPATH . '/` and `ABSPATH . "/` revealed 13 files where
 this happens.
 The attached patch removes the extra `/`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57074>
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