[wp-trac] [WordPress Trac] #49903: Can't post comment with content "0" (string with zero)

[WordPress Trac]

#49903: Can't post comment with content "0" (string with zero)
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 Reporter:  Cawa-93       |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  REST API      |     Version:  5.4
 Severity:  major         |  Resolution:
 Keywords:  needs-patch   |     Focuses:  rest-api
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Changes (by TimothyBlynJacobs):

 * milestone:  Awaiting Review => Future Release


Comment:

 Thanks for the ticket @Cawa-93!

 It looks like `wp_handle_comment_submission` strictly rejects an empty
 string which would allow a comment of `0`.

 Originally, the REST API comments controller did the same check, but in
 #38720 this was loosened to an `empty` check. Looking at the ticket, I'm
 not entirely sure why that part of the change was necessary.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49903#comment:3>
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