disable repeat unless mid is a resolvable uri since this will do radically different things on different network stacks (e.g. Diaspora) and it turns out there is no possible way to make Diaspora reshares compatible with ActivityPub or Zot6 repeat/announce/boost/whatever.

Zotlabs/Module/Share.php

@@ -51,11 +51,6 @@ class Share extends \Zotlabs\Web\Controller {
 	
 		if($r[0]['mimetype'] !== 'text/bbcode')
 			killme();
-
-		if(strpos($r[0]['mid'],'http') === false) {
-			notice( t('Source message cannot be repeated. Sharing instead.') . EOL);
-			goaway(z_root() . '/embed/' . argv(1));
-		}
 		
 		xchan_query($r);