Add 'yankshort' option.

common/content/dactyl.js

@@ -1431,7 +1431,10 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
                 setter: function (value) {
                     let win = document.documentElement;
                     function updateTitle(old, current) {
-                        document.title = document.title.replace(RegExp("(.*)" + util.regexp.escape(old)), "$1" + current);
+                        if (config.browser.updateTitlebar)
+                            config.browser.updateTitlebar();
+                        else
+                            document.title = document.title.replace(RegExp("(.*)" + util.regexp.escape(old)), "$1" + current);
                     }
 
                     if (services.has("privateBrowsing")) {

common/locale/en-US/options.xml

@@ -1811,6 +1811,17 @@
     </description>
 </item>
 
+<item>
+    <tags>'ys' 'yankshort'</tags>
+    <spec>'yankshort' 'ys'</spec>
+    <type>&option.yankshort.type;</type>
+    <default>&option.yankshort.default;</default>
+    <description>
+        <p>Yank the canonical short URL of a web page where provided.</p>
+    </description>
+</item>
+
+
 </document>
 
 <!-- vim:se sts=4 sw=4 et: -->

common/modules/buffer.jsm

@@ -1835,8 +1835,9 @@ var Buffer = Module("Buffer", {
         mappings.add([modes.NORMAL],
             ["y", "<yank-location>"], "Yank current location to the clipboard",
             function () {
-                let link = DOM("link[href][rev=canonical], link[href][rel=shortlink]", buffer.doc);
-                let url = link.length ? link.attr("href") : buffer.uri.spec;
+                let { doc, uri } = buffer;
+                let link = DOM("link[href][rev=canonical], link[href][rel=shortlink]", doc);
+                let url = link.length && options.get("yankshort").getKey(uri) ? link.attr("href") : uri.spec;
                 dactyl.clipboardWrite(url, true);
             });
 
@@ -2329,6 +2330,10 @@ var Buffer = Module("Buffer", {
                 setter: function (value) buffer.contentViewer.authorStyleDisabled = value,
                 getter: function () buffer.contentViewer.authorStyleDisabled
             });
+
+        options.add(["yankshort", "ys"],
+            "Yank the canonical short URL of a web page where provided",
+            "sitelist", ["youtube.com", "bugzilla.mozilla.org"]);
     }
 });
 

common/modules/options.jsm

@@ -336,7 +336,9 @@ var Option = Class("Option", {
         if (this.type === "string")
             defaultValue = Commands.quote(defaultValue);
 
-        if (isObject(defaultValue))
+        if (isArray(defaultValue))
+            defaultValue = defaultValue.map(Option.quote).join(",");
+        else if (isObject(defaultValue))
             defaultValue = iter(defaultValue).map(function (val) val.map(Option.quote).join(":")).join(",");
 
         if (isArray(defaultValue))