[wp-trac] [WordPress Trac] #47863: Fix odd, unexpected output from shortcode_parse_attts

[WordPress Trac]

#47863: Fix odd, unexpected output from shortcode_parse_attts
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 Reporter:  mauteri                   |       Owner:  SergeyBiryukov
     Type:  defect (bug)              |      Status:  reviewing
 Priority:  normal                    |   Milestone:  5.3
Component:  Shortcodes                |     Version:
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Comment (by mauteri):

 Thanks @birgire, good points there. I've adjusted the trimming a bit.
 Mostly just pulling off any hanging `/` at the end of the string with a
 preg_replace before trimming whitespace. I also added a few more tests you
 mentioned above with what I think the expected output would be given the
 circumstance. Let me know of you agree or if you have any comments on the
 additional tests.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47863#comment:14>
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