Last modified: 2011-01-25 01:33:03 UTC

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Bug 16925 - Diffs silently fail when $wgExternalDiffEngine is set to 'wikidiff2' but extension is not installed
Diffs silently fail when $wgExternalDiffEngine is set to 'wikidiff2' but exte...
Product: MediaWiki
Classification: Unclassified
History/Diffs (Other open bugs)
All All
: Normal enhancement (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
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Reported: 2009-01-07 20:27 UTC by Brion Vibber
Modified: 2011-01-25 01:33 UTC (History)
1 user (show)

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


Description Brion Vibber 2009-01-07 20:27:40 UTC
Discovered this when wikitech was moved to new server; wikidiff2 had been set up as $wgExternalDiffEngine but the PHP extension hadn't been installed on the new machine.

Diffs failed silently, and were even saved blank into the diff cache. All edits appeared as thought here were no changes, more or less.

Should either show an error message, fall back to regular diff code, or some combination thereof; and should definitely not be saving bogus diffs into the cache!
Comment 1 Chad H. 2009-01-08 00:14:56 UTC
That seems really odd. DifferenceEngine *should* be failing back to native PHP diff implementation if it can't load/use wikidiff2.
Comment 2 Chad H. 2009-05-07 16:00:38 UTC
Fixed in r50310

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