Last modified: 2011-03-13 18:06:07 UTC

Wikimedia Bugzilla is closed!

Wikimedia has migrated from Bugzilla to Phabricator. Bug reports should be created and updated in Wikimedia Phabricator instead. Please create an account in Phabricator and add your Bugzilla email address to it.
Wikimedia Bugzilla is read-only. If you try to edit or create any bug report in Bugzilla you will be shown an intentional error message.
In order to access the Phabricator task corresponding to a Bugzilla report, just remove "static-" from its URL.
You could still run searches in Bugzilla or access your list of votes but bug reports will obviously not be up-to-date in Bugzilla.
Bug 10279 - Supressed attribute output is broken
Supressed attribute output is broken
Product: MediaWiki extensions
Classification: Unclassified
Semantic MediaWiki (Other open bugs)
All All
: Lowest normal (vote)
: ---
Assigned To: Markus Krötzsch
Depends on:
  Show dependency treegraph
Reported: 2007-06-15 17:06 UTC by Sergey Chernyshev
Modified: 2011-03-13 18:06 UTC (History)
1 user (show)

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


Description Sergey Chernyshev 2007-06-15 17:06:30 UTC
When page has an attribute defined in the way that it's output is completely suppressed, e.g.

   [[Date of birth:=1976-03-31|]]

page breaks and when edited again, shows

   [[Date of birth:=1976-03-31|=1976-03-31]]

instead, replacing empty title  with '=' sign followed by attribute value.

Workaround is to put space after | symbol like this:

   [[Date of birth:=1976-03-31| ]]
Comment 1 Dan Collins 2007-06-15 17:16:42 UTC
This is a feature, not a bug, more information at
Comment 2 Sergey Chernyshev 2007-06-15 20:56:39 UTC
Apparently it's a bug in Semantic MediaWiki Extension, result appears as "=1976-03-31" and makes absolutely no sense.

Also it doesn't get formatted as date (according to user preferences) while [[1976-03-31]] does. This might be related to bug 9620.
Comment 3 Siebrand Mazeland 2008-08-11 11:05:23 UTC
Re-assign to extension developer for triage/comments.
Comment 4 Markus Krötzsch 2008-10-02 21:11:03 UTC
Sorry, Sergey, I am afraid I cannot fix this. SMW now prefers to use two colons, ::, instead of :=. So if you want the pipe trick to produce better output, then MediaWiki should seek the last colon instead of the first (but that would cause other problems, I guess, or at least change the current behaviour). This is not a thing that SMW can change, at least not without major additional efforts (such as pre-encoding the colons in some other way with some other parser hook).

So, yes, this is a bit annoying, but we will not change it. SMW might soon support other means for adding hidden annotations, and generally support non-link input syntax (the link syntax here is apparently the core of our problem). Also, the workaround with a space as mentioned in earlier comments works pretty well.
Comment 5 Sergey Chernyshev 2008-10-03 15:31:43 UTC
OK, no problem. For a year since this bug was discovered, I got used to use [[Property::Value| ]] to suppress the output or [[Property::Value|Value]] manually instead of using a pipe trick.

It might be worth adding this to SMW documentation somewhere around the description of '::' syntax that it breaks "pipe trick" so others don't get confused over this as I believe there were a few pipe-trick-related questions of SMW and SF lists as people want to hide the output.
Comment 6 Markus Krötzsch 2008-10-04 15:17:36 UTC
Good point. I added a remark to the documentation ( now.

Note You need to log in before you can comment on or make changes to this bug.