مدیاویکی:Gadget-decodesummary.js

// <nowiki>

(function ($, mw) {
	'use strict';
	
	var nonLinkChars = / \\^`#<>\[\]"\t\n{\|}/.source;
	var linkComponent = '[^' + nonLinkChars + ']*';
	var linkEnd = '(?=$|[' +  nonLinkChars + '])';
	var siteCode = mw.config.get('wgServer').match(/\w+\./)[0].slice(0,-1);
	var selfSiteIntLinkStart = '[[' + siteCode + ':';
	var mwLinkStart = /(?:https?:)?\/\/([a-z\-]+)\.(?:wikipedia|wikimedia)(?:\.beta\.wmflabs)?\.org\//.source;
	var simpleTitleLink = RegExp(
		mwLinkStart
		+  /(?:wiki\/|w\/index\.php\?title=)([^&]*)/.source
		+ linkEnd
	);
	var diffRegex = RegExp(
		'(?:' + mwLinkStart + linkComponent
		+ ')?&?diff=(\\d+|next|prev|cur)(?:&oldid=(\\d+|next|prev|cur)?)?(#'
		+ linkComponent + ')?' + linkEnd,
		'gi'
	);
	var oldidRegex = RegExp(
		'(?:' + mwLinkStart + linkComponent + ')?&?oldid=(\\d+|next|prev|cur)(#' 
		+ linkComponent + ')?' + linkEnd,
		'gi'
	);
	
	function decodeSummary(e) {
		var target, val, originalVal;
		target = $(e.currentTarget);
		val = originalVal = target.val();
		try {
			val = decodeURI(val.replace(/%20/g, '\uFFFF')).replace(/\uFFFF/g, '%20'); // uFFFF is a noncharacter
		    val = decodeSummarySpecial(val);
		    if (val !== originalVal) {
		  	  target.val(val);
		    }
		} catch (ignore) {}
	}
	
	function decodeSummarySpecial(val) {
		return val
			// Put diff before oldid.
			.replace(/(oldid=(?:\d+|next|prev|cur)?)&(diff=(?:\d+|next|prev|cur)?)/gi, '$2&$1')
			// Special:Diff
			.replace(diffRegex, '[[$1:Special:Diff/$3/$2$4]]')
			// Special:Permalink
			.replace(oldidRegex, '[[$1:Special:Permalink/$2$3]]')
			// [[Special:Diff/12345678/prev]] is equal to [[Special:Diff/12345678]]
			.replace(/\[\[([a-z\-]+:)Special:Diff\/(\d+|next|prev|cur)\/prev\]\]/gi, '[[$1Special:Diff/$2]]')
			// no oldid
			.replace('Special:Diff//', 'Special:Diff/')
			.replace(simpleTitleLink, '[[$1:$2]]')
			.replace(selfSiteIntLinkStart, '[[')
			.replace('[[:', '[[');
	}
	
	if(['Emailuser', 'UrlShortener'].indexOf(mw.config.get('wgCanonicalSpecialPageName')) === -1) {
		$(
			'#wpSummary, #wpReason, [name=wpReason], #mwProtect-reason,' + 
			'#mw-input-wpReason-other, #wpComment,' +
			' .mw-ui-input.summary, .oo-ui-inputWidget-input'
		).on('paste keyup change', decodeSummary);
	}

	window.decodeSummarySpecial = decodeSummarySpecial;

})(jQuery, mediaWiki);

// </nowiki>