new :set and :prefs commands, tweaked :set output to use colors

content/commands.js

@@ -1042,11 +1042,35 @@ function Commands() //{{{
         }
     ));
     addDefaultCommand(new Command(["pref[erences]", "prefs"],
-        openPreferences,
+        function(args, special, count, modifiers)
         {
+            if (!args)
+            {
+                // TODO: copy these snippets to more function which should work with :tab xxx
+                if (modifiers && modifiers.inTab)
+                {
+                    vimperator.open(special ? "about:config" :
+                        "chrome://browser/content/preferences/preferences.xul", vimperator.NEW_TAB);
+                }
+                else
+                {
+                    if (special) // open firefox settings gui dialog
+                        vimperator.open("about:config", vimperator.CURRENT_TAB);
+                    else
+                        openPreferences();
+                }
+            }
+            else
+            {
+                vimperator.echoerr("E488: Trailing characters");
+            }
+        },
+        {
+            usage: [":pref[erences][!]"],
             short_help: "Show Browser Preferences",
-            help: "You can change the browser preferences from this dialog.<br/>Be aware that not all Firefox preferences work, because Vimperator overrides some keybindings and changes Firefox's GUI.<br/>" +
-                  "Works like <code class=\"command\">:set!</code>, but opens the dialog in a new window instead of a new tab. Use this, if you experience problems/crashes when using <code class=\"command\">:set!</code>"
+            help: "You can change the browser preferences from this dialog. " +
+                  "Be aware that not all Firefox preferences work, because Vimperator overrides some keybindings and changes Firefox's GUI.<br/>" +
+                  "<code class=\"command\">:prefs!</code> opens about:config in the current tab where you can change advanced Firefox preferences."
         }
     ));
     addDefaultCommand(new Command(["qma[rk]"],
@@ -1154,22 +1178,21 @@ function Commands() //{{{
     addDefaultCommand(new Command(["se[t]"],
         function(args, special, count, modifiers)
         {
+            if (special)
+            {
+                vimperator.echo("This WILL show all non-default about:config options");
+                return;
+            }
+
+            var only_non_default = false; //used for :set to print non-default options
             if (!args)
             {
-                // TODO: copy these snippets to more function which should work with :tab xxx
-                var where = vimperator.CURRENT_TAB;
-                if (arguments[3] && arguments[3].inTab)
-                    where = vimperator.NEW_TAB;
-
-                if (special) // open firefox settings gui dialog
-                    vimperator.open("chrome://browser/content/preferences/preferences.xul", where);
-                else
-                    vimperator.open("about:config", where);
+                args = "all?"
+                only_non_default = true;
             }
-            else
-            {
+
             //                               1        2       3    4  5      6
-                var matches = args.match(/^\s*(no|inv)?([a-z_]+)([?&!])?(([+-])?=(.*))?/);
+            var matches = args.match(/^\s*(no|inv)?([a-z]+)([?&!])?(([+-])?=(.*))?/);
             if (!matches)
             {
                 vimperator.echoerr("E518: Unknown option: " + args);
@@ -1230,7 +1253,7 @@ function Commands() //{{{
             {
                 if (all)
                 {
-                        vimperator.options.list();
+                    vimperator.options.list(only_non_default);
                 }
                 else
                 {
@@ -1298,14 +1321,13 @@ function Commands() //{{{
                 else
                     vimperator.echoerr("E685: Internal error: option format `" + type + "' not supported");
             }
-            }
         },
         {
             usage: ["se[t][!]", "se[t] {option}?", "se[t] [no]{option}", "se[t] {option}[+-]={value}", "se[t] {option}! | inv{option}", "se[t] {option}&"],
             short_help: "Set an option",
-            help: "Permanently change an option. In contrast to Vim options are stored throughout sessions.<br/>" +
-                  "<code class=\"command\">:set</code> without an argument opens <code>about:config</code> in a new tab to change advanced Firefox options.<br/>" +
-                  "<code class=\"command\">:set!</code> opens the GUI preference panel from Firefox in a new tab.<br/>" +
+            help: "Permanently change an option. In contrast to Vim options are currently stored throughout sessions.<br/>" +
+                  "<code class=\"command\">:set</code> without an argument shows all Vimperator options which differ from their default values.<br/>" +
+                  "<code class=\"command\">:set!</code> without an argument shows all about:config preferences which differ from their default values.<br/>" +
                   "There are three types of options: boolean, number and string. " +
                   "Boolean options must be set with <code class=\"command\">:set option</code> and <code class=\"command\">:set nooption</code>. " +
                   "Number and string option types must be set with <code class=\"command\">:set option={value}</code>.<br/>" +
@@ -1407,8 +1429,9 @@ function Commands() //{{{
         {
             usage: ["tab {cmd}"],
             short_help: "Execute {cmd} and tell it to output in a new tab",
-            help: "Works only for commands that support it.<br/>" +
-                  "Example: <code class=\"command\">:tab help tab</code> opens the help in a new tab.",
+            help: "Works only for commands that support it, currently:" +
+                  "<ul><li>:tab help</li>" +
+                  "<li>:tab prefs[!]</li></ul>",
             completer: function(filter) { return vimperator.completion.get_command_completions(filter); }
         }
     ));

content/options.js

@@ -301,25 +301,39 @@ function Options() //{{{
             storePreference('dom.popup_allowed_events', popup_allowed_events);
     }
 
-    this.list = function()
+    this.list = function(only_non_default)
     {
         // TODO: columns like Vim?
         var list = ":" + vimperator.util.escapeHTML(vimperator.commandline.getCommand()) + "<br/>" +
                    "<table><tr align=\"left\" class=\"hl-Title\"><th>--- Options ---</th></tr>";
-        var name, value;
+        var name, value, def;
 
         for (var i = 0; i < options.length; i++)
         {
             name  = options[i].name;
             value = options[i].value;
+            def   = options[i].default_value;
+
+            if (only_non_default && value == def)
+                continue;
 
             if (options[i].type == "boolean")
             {
                 name = value ? "  " + name : "no" + name;
+                if (value != def)
+                    name = "<span style=\"font-weight: bold\">" + name + "</span><span style=\"color: gray\">  (default: " + (def ? "" : "no") + options[i].name + ")</span>";
                 list += "<tr><td>" + name + "</td></tr>";
             }
             else
             {
+                if (value != def)
+                {
+                    name  = "<span style=\"font-weight: bold\">" + name + "</span>";
+                    value = vimperator.util.colorize(value, false) + "<span style=\"color: gray\">  (default: " + def + ")</span>";
+                }
+                else
+                    value = vimperator.util.colorize(value, false);
+
                 list += "<tr><td>" + "  " + name + "=" + value + "</td></tr>";
             }
         }

content/util.js

@@ -32,6 +32,49 @@ vimperator.util = {
         var e = window.content.document.createElement("div");
         e.appendChild(window.content.document.createTextNode(str));
         return e.innerHTML;
+    },
+
+    // TODO: use :highlight color groups
+    // if "process_strings" is true, any passed strings will be surrounded by " and
+    // any line breaks are displayed as \n
+    colorize: function(arg, process_strings)
+    {
+        var type = typeof(arg);
+
+        if (type == "number")
+        {
+            return "<span style=\"color: red;\">" + arg + "</span>";
+        }
+        else if (type == "string")
+        {
+            if (process_strings)
+                arg = '"' + vimperator.util.escapeHTML(arg.replace(/\n/, "\\n")) + '"';
+
+            return "<span style=\"color: green;\">" + arg + "</span>";
+        }           
+        else if (type == "boolean")
+        {
+            return "<span style=\"color: blue;\">" + arg + "</span>";
+        }
+        else if (arg == null || arg == "undefined")
+        {
+            return "<span style=\"color: blue;\">" + arg + "</span>";
+        }
+        else if (type == "object" || type == "function")
+        {
+            // for java packages value.toString() would crash so badly 
+            // that we cannot even try/catch it
+            if (/^\[JavaPackage.*\]$/.test(arg)) 
+                return "[JavaPackage]";
+
+            var str = arg.toString();
+            if (typeof str == "string")  // can be "undefined"
+                return vimperator.util.escapeHTML(str);
+            else
+                return "undefined";
+        }
+
+        return arg;
     }
 }
 

content/vimperator.js

@@ -434,11 +434,13 @@ const vimperator = (function() //{{{
             }
         },
 
+        // TODO: move to vimp.util.? --mst
         // if color = true it uses HTML markup to color certain items
         objectToString: function(object, color)
         {
             if (object === null)
                 return "null";
+
             if (typeof object != "object")
                 return false;
 
@@ -472,32 +474,7 @@ const vimperator = (function() //{{{
 
                 if (color)
                 {
-                    // syntax highlighting for special items
-                    if (typeof value === "number")
-                        value = "<span style=\"color: red;\">" + value + "</span>";
-                    else if (typeof value === "string")
-                    {
-                        value = value.replace(/\n/, "\\n").replace(/</, "&lt;");
-                        value = "<span style=\"color: green;\">\"" + value + "\"</span>";
-                    }
-                    else if (typeof value === "boolean")
-                        value = "<span style=\"color: blue;\">" + value + "</span>";
-                    else if (value == null || value == "undefined")
-                        value = "<span style=\"color: blue;\">" + value + "</span>";
-                    else if (typeof value === "object" || typeof value === "function")
-                    {
-                        // for java packages value.toString() would crash so badly 
-                        // that we cannot even try/catch it
-                        if (/^\[JavaPackage.*\]$/.test(value)) 
-                            value = "[JavaPackage]";
-                        else
-                        {
-                            var str = value.toString();
-                            if (typeof str == "string")  // can be "undefined"
-                                value = vimperator.util.escapeHTML(str);
-                        }
-                    }
-                    
+                    value = vimperator.util.colorize(value, true);
                     string += "<span style=\"font-weight: bold;\">" + i + "</span>: " + value + "\n";
                 }
                 else