[wp-trac] [WordPress Trac] #28797: Shortcodes Run on Partial Match

[WordPress Trac]

#28797: Shortcodes Run on Partial Match
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 Reporter:  brianjohnsondesign  |      Owner:
     Type:  defect (bug)        |     Status:  new
 Priority:  normal              |  Milestone:  Awaiting Review
Component:  Shortcodes          |    Version:  3.5.2
 Severity:  normal              |   Keywords:
  Focuses:                      |
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 Note: This was on a slightly older version of WordPress, maybe it was
 fixed since then, but I haven't seen anything about it.

 I have a very simple custom plugin, which defines two shortcodes,
 [close_out_display] and [close_out].

 I was having some issues with it, and eventually realized that the
 shortcode [close_out_display] would run the function tied to [close_out],
 or at least parts of it. It would appear that nothing was being echoed,
 but the function included some changes to user meta that were occurring.
 To isolate the problem, I even removed, entirely, the function to create
 the [close_out_display] function, leaving only [close_out] defined.

 On a page with no other content, I added "[close_out_display]". Sure
 enough, the [close_out] function still ran.

 Then I tried changing the SHORTCODE definition for [close_out] to
 [close_out1]. It did NOT run.

 Then I changed the CONTENT of the page to be [close_14124] and it did NOT
 run.

 I tried various tests, and eventually came to the conclusion that as long
 as the name of the function's shortcode is matched, in its entirety, as
 the first characters of the shortcode in the content, it would run. For
 instance, if it is defined as [close_out], then anything from
 [close_out124521512] to [close_out_acasdcasfweiocen] would still run it.

 I understand that shortcodes utilize variables and what not, but isn't the
 first section of the shortcode, before any spaces, ALWAYS supposed to
 match, exactly, the name of the shortcode? Shouldn't extra characters
 cause it not to function?

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Ticket URL: <https://core.trac.wordpress.org/ticket/28797>
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