Main docs are at
https://www.mediawiki.org/wiki/Manual:$wgRightsUrl
I assume you're talking of
https://help.libreoffice.org/Main_Page and
friends, a tricky situation indeed. :) Given
https://help.libreoffice.org/api.php?action=query&siprop=rightsinfo&…
and
https://help.libreoffice.org/MediaWiki:Copyright it seems you are
successfully passing your custom copyright text to the message, but you
are lacking a copyright URL and a copyright icon (unless it was an
intentional skin modification?). So you have a couple things to do.
1) You should complete the machine-readable setup of your licensing,
otherwise your content is not really usable. Something like this:
$wgRightsUrl = 'https://www.gnu.org/licenses/lgpl-3.0.html';
$wgRightsIcon = 'https://licensebuttons.net/l/LGPL/2.1/88x62.png';
# Or FSF or local: $wgRightsIcon =
'https://www.gnu.org/graphics/lgplv3-88x31.png';
2) Do something about the lego mixup which also generates mixed-language
messages such as «Il contenuto è disponibile in base alla licenza the
GNU Lesser General Public License (LGPLv3), unless otherwise specified,
[...], se non diversamente specificato». (Which is expected per
https://www.mediawiki.org/wiki/Manual:$wgRightsText .)
2a) Just circumvent the "copyright" message entirely and use your own,
maybe even with an English hardcoded text (and the same for the message
in action=edit), with a mechanism similar to
$wgHooks['MessageCache::get'][] = 'onMessageCacheGet';
# blabla
(
https://git.wikimedia.org/blob/mediawiki%2Fextensions%2FWikimediaMessages/1…
)
2b) Or, leave $wgRightsText as is but don't really use it beyond the
API. Edit
https://help.libreoffice.org/MediaWiki:Copyright and friends
to contain only the text you want in the footer, without "$1", and do so
for all desired languages. MediaWiki:Copyright is one of the few
messages which still allows raw HTML
(
https://phabricator.wikimedia.org/T45646 ) so watch what your sysops
put there. :)
Nemo