It would be useful if you gave the exact name of the
message.
That brings up another problem, how is the user to figure that out?!
Here we see in an uselang=en dump, which doesn't have the bug, that
the page we are looking has all the trappings of the real
Current_events page, and unless one looks closely, one thinks it is
the Current_events page.
$ w3m -dump
'http://localhost/mediawiki/index.php?title=Current_events&oldid=9999999999999&uselang=en'
Current events
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The database did not find the text of a page that it should have found, named
"Current events,oldid=2147483647".
This is usually caused by following an outdated diff or history link to a page
that has been deleted.
If this is not the case, you may have found a bug in the software. Please
report this to an administrator, making note of the URL.
Retrieved from "http://localhost/mediawiki/index.php?title=Current_events"
And not even in the HTML source can one find the message name you
want. Any additional bugs I mention please report, if worthy.
OK, looking through Allmessages I dug it up:
$ w3m -dump
http://localhost/mediawiki/index.php?title=媒體維基:Missingarticle\&action=…
數據庫找不到文字"$1"。
<p>通常這是由於修訂歷史頁上過時的鏈接到已經被刪除的頁面所導致的。
<p>如果情況不是這樣，您可能找到了軟件內的一個臭蟲。
請記錄下URL地址，並向管理員報告。
The problem must be they forgot to close the <p>'s, so the 2nd one
ends up rendered. Ah ha! So do validate all your HTML before making
releases. You could probably cat(1) together all the items on
Allmessages, and send it all to the validate(1) program.
By the way, in
http://localhost/mediawiki/index.php?title=特殊:Allmessages&uselang=en
one can click on a link offered,
http://localhost/mediawiki/index.php?title=媒體維基:Missingarticle/en&actio…
but that won't get us anywhere, nor will
http://localhost/mediawiki/index.php?title=媒體維基:Missingarticle/en&actio…
Indeed, the /en is not working.