[wp-trac] [WordPress Trac] #19666: Switching from HTML to Visual editor removes some line breaks inside PRE

[WordPress Trac]

#19666: Switching from HTML to Visual editor removes some line breaks inside PRE
--------------------------+-----------------------------
 Reporter:  mrclay        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Editor        |    Version:
 Severity:  normal        |   Keywords:
--------------------------+-----------------------------
 All line breaks inside PRE elements used to transmit correctly when
 switching editor mode from HTML to Visual. Around WP3.1 or so, line breaks
 started to be removed if they happened to be inside an inline element. The
 common use case is a single CODE element in a PRE element:
 {{{
 <pre><code>Line 1
 Line 2
 Line 3</code></pre>
 }}}
 The above markup used to be handled correctly when switching between
 editor modes in either direction, but now the line breaks are converted to
 spaces when switching from HTML to Visual mode.

 Many users have posts with a single CODE inside PRE, as it's semantically
 correct for source code, and is the convention required to support some
 syntax highlighters like Chili.

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Ticket URL: <http://core.trac.wordpress.org/ticket/19666>
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