Fixed duplication of the link destination preview

If showstatuslinks was set other than 0, there were two link destination
previews. Hence fixed so that the Firefox's link preview is shown only
when showstatuslinks is 3(new value).

Author: demokritos

common/content/buffer.js

@@ -281,8 +281,13 @@ const Buffer = Module("buffer", {
             asyncUpdateUI.superapply(this, arguments);
         },
         setOverLink: function setOverLink(link, b) {
-            setOverLink.superapply(this, arguments);
             let ssli = options["showstatuslinks"];
+
+            if (ssli == 3) {
+                setOverLink.superapply(this, arguments);
+                return;
+            }
+
             if (link && ssli) {
                 if (ssli == 1) {
                     statusline.updateField("location", "Link: " + link);
@@ -299,7 +304,7 @@ const Buffer = Module("buffer", {
                 }
                 else if (ssli == 2)
                     modes.show();
-                }
+            }
         },
     },
 
@@ -1792,8 +1797,9 @@ const Buffer = Module("buffer", {
             {
                 completer: function (context) [
                     ["0", "Don't show link destination"],
-                    ["1", "Show the link in the status line"],
-                    ["2", "Show the link in the command line"]
+                    ["1", "Show the link destination in the status line"],
+                    ["2", "Show the link destination in the command line"],
+                    ["3", "Show the link destination in the content area"]
                 ]
             });
 

common/locale/en-US/options.xml

@@ -1128,8 +1128,9 @@
 
         <dl>
             <dt>0</dt>      <dd>Don't show link destination</dd>
-            <dt>1</dt>      <dd>Show the link in the status line</dd>
-            <dt>2</dt>      <dd>Show the link in the command line</dd>
+            <dt>1</dt>      <dd>Show the link destination in the status line</dd>
+            <dt>2</dt>      <dd>Show the link destination in the command line</dd>
+            <dt>3</dt>      <dd>Show the link destination in the content area</dd>
         </dl>
     </description>
 </item>