User:Enterprisey/ipv6-subnet-link.js

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Documentation for this user script can be added at User:Enterprisey/ipv6-subnet-link.

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$(function() {
    if (mw.config.get('wgCanonicalSpecialPageName') === 'Contributions') {
        var a = mw.config.get('wgRelevantUserName');
        if (a && (a.split(':').length === 8) && (a.indexOf('/') < 0)) {
            mw.loader.using(['mediawiki.util'], function() {
                var b = 'Special:Contribs/' + a.split(':').slice(0, 4).join(':') + '::/64';
                $('.mw-contributions-user-tools').first().after('<p><a href="' + mw.util.getUrl(b) + '" title="' + b + '">' + b + '</a></p>');
            });
        }
    }
});