// Created by Ilmari Karonen
// Credits: Porchcrop for some minor improvements. Information shown at [[User:Porchcrop/Rollback Summary]]
$(function () {
var serverRe = mw.config.get('wgServer').replace(/([^A-Za-z0-9_])/g, "\\$1");
var scriptRe = mw.config.get('wgScript').replace(/([^A-Za-z0-9_])/g, "\\$1");
var rollbackRe = new RegExp ("^(" + serverRe + ")?" + scriptRe + "\\?([^#]*&)?action=rollback(&|$)");
var promptSummary = function () {
var summary = prompt("Enter summary for rollback (or leave as current to use default summary):", "[[Help:Reverting|Reverted]] edits by [[Special:Contributions/$2|$2]] ([[User talk:$2|talk]]) to last version by $1");
if (summary == null || summary == "") return false;
if (summary == "[[Help:Reverting|Reverted]] edits by [[Special:Contributions/$2|$2]] ([[User talk:$2|talk]]) to last version by $1") return true;
this.href = this.href.replace("?", "?summary=" + encodeURIComponent(summary) + "&");
};
var links = document.getElementsByTagName("a");
for (var i = 0; i < links.length; i++) {
if (rollbackRe.test(links[i].href)) links[i].onclick = promptSummary;
}
});