Last modified: 2010-07-24 18:23:52 UTC

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Bug 22905 - Parser.php doMagicLinks() mishandle abbr tag
Parser.php doMagicLinks() mishandle abbr tag
Product: MediaWiki
Classification: Unclassified
Parser (Other open bugs)
All All
: Normal normal (vote)
: ---
Assigned To: Nobody - You can work on this!
: patch, patch-need-review
Depends on:
  Show dependency treegraph
Reported: 2010-03-20 05:08 UTC by Solitarius
Modified: 2010-07-24 18:23 UTC (History)
3 users (show)

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

regular expression modification (815 bytes, patch)
2010-03-20 05:13 UTC, Solitarius

Description Solitarius 2010-03-20 05:08:56 UTC
With the white listing of the <abbr>, the function doMagicLinks() of Parser.php mix <a> and <abbr> together.
Comment 1 Solitarius 2010-03-20 05:13:01 UTC
Created attachment 7235 [details]
regular expression modification
Comment 2 Aryeh Gregor (not reading bugmail, please e-mail directly) 2010-03-23 16:41:01 UTC
1) Do you have a test case that demonstrates the problem?  I.e., what's some markup that parses incorrectly because of this bug?

2) Your change doesn't seem quite right -- whitespace other than a simple space would be valid HTML here (although I haven't looked closely enough to see if it would actually be possible at this stage in the parsing).  I would suggest (<a[^a-z0-9].*?</a>).
Comment 3 Solitarius 2010-03-24 04:17:26 UTC
1) The wiki markup bellow get incorrectly parsed. You can also check [[User:GuillaumeBeaudoin]] for more example.

<abbr>(fr)</abbr> ISBN 2753300917 [ La méthode Google]

The <abbr> tag is extensively used on the French wikipedia and the issue have been first found on [[fr:Wikipedia]] by [[fr:User:Manu1400]].

2) You're right, a tab or any whitespace other than a simple space would not make good on my regular expression. We could use \s for any whitespaces (option A). The one likes what you've proposed (option B).

Option A - <a[\w>].*?</a>
Option B - <a[^a-zA-Z0-9].*?</a>
Option C - <a[^[:alnum:]].*?</a>

Altough, I'm not sure what capital letters would do.
Comment 4 Aryeh Gregor (not reading bugmail, please e-mail directly) 2010-03-24 13:44:13 UTC
Committed a modified version in r64113.  I went with (<a[ \t\r\n>].*?</a>) in the end, matching the HTML5 spec as far as I'm reading it: <>  Thanks for the patch!
Comment 5 Solitarius 2010-03-25 05:27:38 UTC
Thanks you Aryeh. Merci!
Comment 6 S. McCandlish 2010-07-24 18:22:41 UTC
Since this is fixed, removing Bug #617 as a "blocks" dependency.
Comment 7 S. McCandlish 2010-07-24 18:23:52 UTC
Woops, typo. Corrected: Since this is fixed, removing Bug #671 as a "blocks" dependency.

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