[wp-trac] [WordPress Trac] #34814: Presence of "Less than sign" < adds additional closing shortcode tag.

[WordPress Trac]

#34814: Presence of "Less than sign" < adds additional closing shortcode tag.
-------------------------------+-----------------------------
 Reporter:  alexander.rohmann  |      Owner:
     Type:  defect (bug)       |     Status:  new
 Priority:  normal             |  Milestone:  Awaiting Review
Component:  Shortcodes         |    Version:  4.2.3
 Severity:  normal             |   Keywords:
  Focuses:                     |
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 If a `<` is used in shortcode content without a reciprocating `>` the
 shortcode closing tag will be duplicated. This was introduced in 4.2.3 as
 part of [https://core.trac.wordpress.org/changeset/33360/]

 For example, assuming `[my_shortcode]` simply returns it's content.
 This...
 `[my_shortcode]One < Two[/my_shortcode]`

 Should output this:
 `One < Two`

 But instead, we get this:

 `One < Two[/my_shortcode]`

 Consequently, a unit test somewhat like this won't pass:

 {{{
 array(
     '[caption]Hello < World[/caption]',
     'Hello < World'
 )
 }}}


 I'm not 100% sure, but I suspect it's due to this regex:
 https://core.trac.wordpress.org/browser/branches/4.2/src/wp-
 includes/shortcodes.php?rev=33360#L346

 By continuing to match all input, perhaps that also grabs the shortcode's
 closing tag, causing it to be duplicated.

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Ticket URL: <https://core.trac.wordpress.org/ticket/34814>
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