[wp-trac] [WordPress Trac] #42340: Spurious Insertion of <p>aragraph Tags

[WordPress Trac]

#42340: Spurious Insertion of <p>aragraph Tags
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 Reporter:  oeconomist    |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Formatting    |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by oeconomist):

 When a user copies-and-pastes, the presumption should be that the source
 was marked-up as intended by whomever or whatever created it. Otherwise,
 if the source has inline elements, then the copy-and-paste may fail after
 conversion, in a way that is perfectly mysterious to users who aren't used
 to doing their own mark-up.

 I've not dived into the code (nor do I intend to do so), but I would guess
 that at some point WordPress converts two consecutive newlines into two
 break elements, and that wpautop effectively assumes that all back-to-back
 instances of two break elements arose from such a conversion.  Assuming
 both that my guess is correct and that there is a good reason for that
 first conversion, I suggest that it be replaced by a substitution such as
 “<br /><!-- convertible --><br />” and that wpautop act when it encounters
 this new substring, leaving alone two back-to-back break elements.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42340#comment:4>
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