'antispoof-conflict-top' => 'The name "$1" is too similar to {{PLURAL:$2|the existing account|the following $2 accounts}}:',

$message = wfMessage( 'antispoof-conflict-top', $name )->numParams( $numConflicts )->escaped();

I'm guessing the message functions are called wrongly..

Siebrands fault from https://gerrit.wikimedia.org/r/#/c/22363/

Errr, I retract that, slightly.

'antispoof-conflict-item' => '$1', # do not translate or duplicate this message to other languages

$message .= '<ul>';
foreach ( $conflicts as $simUser ) {
$message .= '<li>' . wfMessage( 'antispoof-conflict-item', $simUser )->escaped() . '</li>';
}

Mix of Siebrands change, and the enwiki customisation of said message

https://en.wikipedia.org/w/index.php?title=MediaWiki:Antispoof-conflict-item&action=edit

$1 (<a href="/w/index.php?title=Special:Contributions&target=$1">contribs</a>)

'antispoof-conflict-item' => '$1', # do not translate or duplicate this message to other languages

Probably makes most sense to fix this message upstream, and change the code to support the desired output. Maybe.

$message .= '<li>' . wfMsg( 'antispoof-conflict-item
', $simUser ) . '</li>';
$message .= '<li>' . wfMessage( 'antispoof-conflict-
item', $simUser )->escaped() . '</li>';

Technically, this isn't actually a bug... And should probably be swapped to a feature request to have the contribution links...

swalling wrote:

(In reply to comment #3)

$message .= '<li>' . wfMsg( 'antispoof-conflict-item
', $simUser ) . '</li>';
$message .= '<li>' . wfMessage( 'antispoof-conflict-
item', $simUser )->escaped() . '</li>';

Technically, this isn't actually a bug... And should probably be swapped to a
feature request to have the contribution links...

IMO, I don't think the contribution links provide clear value. The message just needs to tell the user that a similar name already exists, not tell them what the person has done.