https://bugzilla.wikimedia.org/show_bug.cgi?id=18609
Summary: Search index text is empty if page contains unmatched
"<"
Product: MediaWiki
Version: 1.15-svn
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: Normal
Component: Search
AssignedTo: wikibugs-l@lists.wikimedia.org
ReportedBy: neph...@skyhighway.com
Created an attachment (id=6067)
--> (https://bugzilla.wikimedia.org/attachment.cgi?id=6067)
Fix broken regexp in SearchUpdate.php (patch to r49794)
If an article contains a "<" symbol and there is no subsequent ">" symbol
anywhere in the article, the si_text field for that article in the searchindex
table ends up completely empty -- even the text in the article before the "<"
symbol is wiped out. It is therefore impossible to search on any of the
article's contents.
For example, http://www.uesp.net/wiki/UESPWiki:Mirror_Plan is currently
triggering this bug; si_text is being set to ''. Although UESP is currently
running MW1.10, the same bug occurs if the article is added to a test wiki
running r49794.
The basic problem is an incorrect pair of parentheses in a preg_replace
expression in SearchUpdate.php::doUpdate(). The attached patch file removes
those parentheses; I also did some secondary cleanup of the expression by
deleting some redundant chunks ("[A-Za-z0-9]*\\s*" is all covered equally well
by "[^>]*?", and the simpler expression doesn't mislead editors). The revised
regexp successfully processes UESPWiki:Mirror_Plan, and also successfully
processes some test pages containing html tags.
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