Last modified: 2014-02-28 11:40:37 UTC

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Bug 42807 - Invisible Unicode characters allowed on pagetitle (\u200E | \uFEFF | \u200B)
Invisible Unicode characters allowed on pagetitle (\u200E | \uFEFF | \u200B)
Status: NEW
Product: MediaWiki
Classification: Unclassified
API (Other open bugs)
1.21.x
All All
: Normal normal (vote)
: ---
Assigned To: Nobody - You can work on this!
:
Depends on: 27446
Blocks:
  Show dependency treegraph
 
Reported: 2012-12-07 00:53 UTC by Marios Magioladitis
Modified: 2014-02-28 11:40 UTC (History)
7 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Marios Magioladitis 2012-12-07 00:53:35 UTC
The following two pages only different on an inivisible unicode character

https://bo.wikipedia.org/wiki/%E0%BD%94%E0%BD%BC%E0%BD%A3%E0%BC%8B%E0%BD%9D%E0%BC%8B%E0%BD%A3%E0%BD%BA%E0%BC%8B%E0%BD%A2%E0%BD%B2%E0%BC%8D

https://bo.wikipedia.org/wiki/%E0%BD%94%E0%BD%BC%E0%BD%A3%E2%80%8B%E0%BC%8B%E0%BD%9D%E0%BC%8B%E0%BD%A3%E0%BD%BA%E0%BC%8B%E0%BD%A2%E0%BD%B2%E0%BC%8D

the should point at the same page but they don't.

This causes a lot of interwiki bots to add invisible unicode characters (https://en.wikipedia.org/w/index.php?title=Paul_Val%C3%A9ry&diff=521762765&oldid=521723299)

The three characters that cause similar problems are \u200E|\uFEFF|\u200B
Comment 1 Marios Magioladitis 2012-12-07 14:33:56 UTC
I suspect that due to these characters the page can't be called directly by typing its title.
Comment 4 emaus 2012-12-10 20:53:30 UTC
Added some previous similar bugs.
Comment 5 Marios Magioladitis 2013-01-20 17:33:49 UTC
The bug may cause serious problems to interwiki bots
https://km.wikipedia.org/w/index.php?title=%E1%9E%91%E1%9F%92%E1%9E%9A%E1%9E%B9%E1%9E%9F%E1%9F%92%E1%9E%8F%E1%9E%B8%E1%9E%94%E1%9E%91%E1%9E%80%E1%9E%BC%E1%9E%9F%E1%9F%8A%E1%9E%B8%E1%9E%93%E1%9E%BB%E1%9E%9F&action=history

Some bypass the redirect, some note, splitting the interwiki links around
Comment 6 Andre Klapper 2013-01-21 07:15:04 UTC
.
Comment 7 Merlijn van Deen (test) 2013-10-25 17:06:56 UTC
See also b

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