[wp-trac] [WordPress Trac] #47912: Non-visible chars in title creates some encoded values in permalink

[WordPress Trac]

#47912: Non-visible chars in title creates some encoded values in permalink
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 Reporter:  dhanendran               |      Owner:  (none)
     Type:  defect (bug)             |     Status:  new
 Priority:  normal                   |  Milestone:  Awaiting Review
Component:  Permalinks               |    Version:  5.2.2
 Severity:  major                    |   Keywords:
  Focuses:  ui, rtl, administration  |
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 When someone copy past some values from word documents, some other editor
 or some site on the web, we end-up copying some non visible chars and
 pasting it in the WordPress post title. This creates some encoded values
 in the permalink.
 [[Image(https://dhanendranrajagopal.me/wp-content/uploads/2019/08/non-
 visible-chars-in-title.png)]]

 [In this link|https://www.utf8-chartable.de/unicode-
 utf8-table.pl?start=8192&number=128] there are so many non visible
 characters which can be easily added in to the post title. There are other
 examples as well for this issue one of them is [Byte Order
 Mark|https://en.wikipedia.org/wiki/Byte_order_mark].

 sanitize_title() function only removes the accents from the title not
 these kind of characters.

 I have searched all the open tickets in trac and couldn't find anything
 related to this issue, so opening one.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47912>
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