List of all system messages of translatewiki.net cannot be displayed

Ah. Yes, search by key prefix is an unsupported use case for Translate/translatewiki.net, see Siebrand on bugzilla:32060. You have to use Special:AllMessages on a wiki with those extensions, for instance [1].

Nemo (talk)19:07, 1 December 2013

So I found the message in the Thanks extension by German Wikipedia system messages. And only because I found the message name on the help page for the Echo extension in German WP which I found by a link in an information banner. For the time stamp message I have the text only - the only text that could be true is this for MediaWiki:Centralauth-days-ago/de. But Centralauth is another extension.

Michawiki (talk)19:33, 1 December 2013