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I think will be good idea to try to use Semantic MediaWiki for identical messages collection.
Instead of referencing to template in message documentation we should only declare identical properties there: identical name and variation (plural, with comma, etc).
Queuing on all message namespaces for messages with same identical name property (if defined) should be done on every documentation page.
To make server workload lower, actual queuing of data may be deferred until somebody press expand identical messages button.
This is just and idea, further talks with folks with deeper knowledge of Semantic MediaWiki is a must :-)
I thought the whole "identical messages" template had already been obsoleted by the translation memory feature.
Translation memory has own issues:
- It can't suggest similar messages to translate (by definition)
- It's current usage doesn't allow to check translation for consistency or possible error (missing colons, parameters, etc.)
- It simple can't suggest translation in quite trivial situations (see Toolserver:Toolserverstatus-toolserver-status-short-erro/en as example).