Wikipedia's on 5.2.5 so would be fine with double-colon, but mediawiki.org is only on 5.2.1 and would fail.
Thomas Dalton wrote:
Double-colons only work since 5.2.3, which means they may work during development, but they will fail on some Wikimedia servers and on many external installations.
Does that mean the Wikimedia servers are not all running identical configurations? That must be a nightmare...
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