https://bugzilla.wikimedia.org/show_bug.cgi?id=31517

       Web browser: ---
             Bug #: 31517
           Summary: Cannot use templates in <gallery> caption
           Product: MediaWiki
           Version: 1.18
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: Unprioritized
         Component: Templates
        AssignedTo: [email protected]
        ReportedBy: [email protected]
    Classification: Unclassified


If I do:

<gallery caption="foo {{some template}} bar">
Image_PlaceHolder.png|Caption of the picture
</gallery>

... the caption isn't expanded at all and displays as "foo {{some template}}
bar"


If I do:

{{#tag:gallery|
Image_PlaceHolder.png{{!}}Caption of the picture
|caption=foo {{some template}} bar
}}

... The caption is expanded but HTML code is escaped so it displays as "foo
<span><div><sup>[etc.] bar"


An example is provided here: http://fr.wikipedia.org/w/index.php?oldid=70852029


Expected result: The caption should be expanded, ideally in both cases; sadly I
presume it would require to add a new syntax, because of the first case.



In order to prove the usefulness of the asked fix:
- there is no problem in putting HTML elements into a <caption> element[1][2],
in case <gallery> would use this element in the future
- on the French Wikipedia we are working on making accessible abbreviation
templates, using <abbr>[3], so that their result is readable by speech
synthesizers.


[1] http://www.w3.org/TR/html4/struct/tables.html#h-11.2.2
[2] http://www.w3.org/TR/html5/tabular-data.html#the-caption-element
[3] http://www.w3.org/TR/html5/text-level-semantics.html#the-abbr-element

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