[wp-meta] [Making WordPress.org] #1865: Add a comment preview in the front end

[Making WordPress.org]

#1865: Add a comment preview in the front end
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 Reporter:  keesiemeijer   |       Owner:
     Type:  enhancement    |      Status:  new
 Priority:  normal         |   Milestone:
Component:  Developer Hub  |  Resolution:
 Keywords:  has-patch      |
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Comment (by keesiemeijer):

 [attachment:1865.patch]  adds a live preview of the comment after the
 comment form with a AJAX. The preview is updated after you stop typing for
 1.5 seconds. A button `preview note` is added to the editor. By applying
 the comment text filters in the AJAX callback all syntax highlighting and
 other styling is applied as it is with a submitted comment.

 I've moved the `syntaxhighlighter_htmlresult` filter from
 `/inc/handbooks.php` to  `/functions.php` because source code could be in
 post content, comments and handbooks.

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Ticket URL: <https://meta.trac.wordpress.org/ticket/1865#comment:1>
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