add prefix count support to :tabprevious, :bprevious, :tabnext, :bnext etc

NEWS

@@ -15,6 +15,7 @@
       generous donation which made this behavior possible)
     * IMPORTANT: ctrl-x/a never take possible negative URLs into account, it was just
       too unpredictable
+    * :tabprevious, :bprevious, :tabnext, :bnext and friends now accept a prefix count
     * add :comclear and :delcommand
     * add a special version to :hardcopy to skip the Print dialog
     * add :bl[ast], :bf[irst], :br[ewind] to go to first/last tab

content/tabs.js

@@ -304,31 +304,56 @@ liberator.Tabs = function () //{{{
         "Switch to the last tab",
         function () { liberator.tabs.select("$", false); });
 
-    // TODO: count support
+    // TODO: "Zero count" if 0 specified as arg
     liberator.commands.add(["tabp[revious]", "tp[revious]", "tabN[ext]", "tN[ext]", "bp[revious]", "bN[ext]"],
         "Switch to the previous tab or go [count] tabs back",
-        function (args)
+        function (args, special, count)
         {
-            if (!args)
-                liberator.tabs.select("-1", true);
-            else if (/^\d+$/.test(args))
+            // count is ignored if an arg is specified, as per Vim
+            if (args)
+            {
+                if (/^\d+$/.test(args))
                     liberator.tabs.select("-" + args, true); // FIXME: urgh!
                 else
                     liberator.echoerr("E488: Trailing characters");
+            }
+            else if (count > 0)
+            {
+                liberator.tabs.select("-" + count, true);
+            }
+            else
+            {
+                liberator.tabs.select("-1", true);
+            }
         });
 
-    // TODO: count support
+    // TODO: "Zero count" if 0 specified as arg
     liberator.commands.add(["tabn[ext]", "tn[ext]", "bn[ext]"],
         "Switch to the next or [count]th tab",
-        function (args)
+        function (args, special, count)
         {
-            if (!args)
+            if (args || count > 0)
             {
-                liberator.tabs.select("+1", true);
+                var index;
+
+                // count is ignored if an arg is specified, as per Vim
+                if (args)
+                {
+                    if (/^\d+$/.test(args))
+                    {
+                        index = args - 1;
                     }
-            else if (/^\d+$/.test(args))
+                    else
                     {
-                var index = parseInt(args, 10) - 1;
+                        liberator.echoerr("E488: Trailing characters");
+                        return;
+                    }
+                }
+                else
+                {
+                    index = count - 1;
+                }
+
                 if (index < liberator.tabs.count)
                     liberator.tabs.select(index, true);
                 else
@@ -336,7 +361,7 @@ liberator.Tabs = function () //{{{
             }
             else
             {
-                liberator.echoerr("E488: Trailing characters");
+                liberator.tabs.select("+1", true);
             }
         });
 
@@ -347,6 +372,7 @@ liberator.Tabs = function () //{{{
 
     if (liberator.config.name == "Vimperator")
     {
+        // TODO: add count support
         liberator.commands.add(["b[uffer]"],
             "Switch to a buffer",
             function (args, special) { liberator.tabs.switchTo(args, special); },
@@ -373,6 +399,7 @@ liberator.Tabs = function () //{{{
             "Reload all tab pages",
             function (args, special) { liberator.tabs.reloadAll(special); });
 
+        // TODO: add count support
         liberator.commands.add(["tabm[ove]"],
             "Move the current tab after tab N",
             function (args, special)

locale/en-US/tabs.txt

@@ -120,9 +120,9 @@ ________________________________________________________________________________
 
 
 |:bn| |:bnext| |:tn| |:tnext| |:tabn| |:tabnext|
-||:tabn[ext] [count]|| +
-||:tn[ext] [count]|| +
-||:bn[ext] [count]||
+||:[count]tabn[ext] [count]|| +
+||:[count]tn[ext] [count]|| +
+||:[count]bn[ext] [count]||
 ________________________________________________________________________________
 Switch to the next or [count]th tab. Cycles to the first tab when the last is
 selected and {count} is not specified.
@@ -137,11 +137,11 @@ ________________________________________________________________________________
 
 
 |:bN| |:bNext| |:bp| |:bprevious| |:tN| |:tNext| |:tabN| |:tabNext| |:tp| |:tprevious| |:tabp| |:tabprevious|
-||:tabp[revious] [count]|| +
-||:tp[revious] [count]|| +
-||:tabN[ext] [count]|| +
-||:bp[revious] [count]|| +
-||:bN[ext] [count]||
+||:[count]tabp[revious] [count]|| +
+||:[count]tp[revious] [count]|| +
+||:[count]tabN[ext] [count]|| +
+||:[count]bp[revious] [count]|| +
+||:[count]bN[ext] [count]||
 ________________________________________________________________________________
 Switch to the previous tab or go [count] tabs back. Wraps around from the
 first tab to the last tab.