diff --git a/content/buffer.js b/content/buffer.js
index 9f60ab24..66a0880e 100644
--- a/content/buffer.js
+++ b/content/buffer.js
@@ -189,7 +189,6 @@ liberator.Buffer = function () //{{{
         "Show the destination of the link under the cursor in the status bar",
         "number", 1,
         {
-            validator: function (value) value >= 0 && value <= 2,
             completer: function (filter)
             {
                 return [
@@ -197,7 +196,8 @@ liberator.Buffer = function () //{{{
                   ["1", "Show the link in the status line"],
                   ["2", "Show the link in the command line"]
                 ];
-            }
+            },
+            validator: function (value) value >= 0 && value <= 2
         });
 
     liberator.options.add(["usermode", "um"],
diff --git a/content/events.js b/content/events.js
index 192d736a..0d2bf059 100644
--- a/content/events.js
+++ b/content/events.js
@@ -47,7 +47,19 @@ liberator.AutoCommands = function () //{{{
 
     liberator.options.add(["eventignore", "ei"],
         "List of autocommand event names which should be ignored",
-        "stringlist", "");
+        "stringlist", "",
+        {
+            completer: function (value) Array(liberator.config.autocommands).push(["all", "All events"]),
+            validator: function (value)
+            {
+                let values = value.split(",");
+                let events = liberator.config.autocommands.map(function (e) e[0]);
+                
+                events.push("all");
+
+                return values.every(function (event) events.indexOf(event) >= 0);
+            }
+        });
 
     liberator.options.add(["focuscontent", "fc"],
         "Try to stay in normal mode after loading a web page",
diff --git a/content/hints.js b/content/hints.js
index e281fc7f..205d52c0 100644
--- a/content/hints.js
+++ b/content/hints.js
@@ -591,11 +591,11 @@ liberator.Hints = function () //{{{
         "How links are matched",
         "string", "contains",
         {
-            validator: function (value) /^(?:contains|wordstartswith|firstletters|custom)$/.test(value),
             completer: function (filter)
             {
                 return ["contains", "wordstartswith", "firstletters", "custom"].map(function (m) [m, ""]);
-            }
+            },
+            validator: function (value) /^(contains|wordstartswith|firstletters|custom)$/.test(value)
         });
 
     liberator.options.add(["wordseparators", "wsp"],
diff --git a/content/mail.js b/content/mail.js
index 38bbc8d8..54e2a665 100644
--- a/content/mail.js
+++ b/content/mail.js
@@ -207,8 +207,7 @@ liberator.Mail = function () //{{{
         "Set the layout of the mail window",
         "string", "inherit",
         {
-            validator: function (value) /^(classic|wide|vertical|inherit)$/.test(value),
-            setter:    function (value)
+            setter: function (value)
             {
                 switch (value)
                 {
@@ -219,7 +218,8 @@ liberator.Mail = function () //{{{
                 }
 
                 return value;
-            }
+            },
+            validator: function (value) /^(classic|wide|vertical|inherit)$/.test(value)
         });
 
     /*liberator.options.add(["threads"],
diff --git a/content/tabs.js b/content/tabs.js
index 247721cc..ed80cd88 100644
--- a/content/tabs.js
+++ b/content/tabs.js
@@ -142,7 +142,6 @@ liberator.Tabs = function () //{{{
 
                 return value;
             },
-            validator: function (value) (value >= 0 && value <= 2),
             completer: function (filter)
             {
                 return [
@@ -151,6 +150,7 @@ liberator.Tabs = function () //{{{
                   ["2", "Always show tab bar"],
                 ];
             },
+            validator: function (value) value >= 0 && value <= 2
         });
 
     if (liberator.config.name == "Vimperator")
diff --git a/content/ui.js b/content/ui.js
index 92f0f0a7..dd92bca4 100644
--- a/content/ui.js
+++ b/content/ui.js
@@ -281,8 +281,7 @@ liberator.CommandLine = function () //{{{
         "number", 500,
         {
             validator: function (value) value >= 0
-        }
-    );
+        });
 
     liberator.options.add(["more"],
         "Pause the message list window when more than one screen of listings is displayed",
@@ -311,15 +310,25 @@ liberator.CommandLine = function () //{{{
          "Engine Alias which has a feature of suggest",
          "stringlist", "google",
          {
-            validator: function (value)
-            {
-                var ss = Components.classes["@mozilla.org/browser/search-service;1"]
-                                   .getService(Components.interfaces.nsIBrowserSearchService);
-                return value.split(",").every(function (item) {
-                    var e = ss.getEngineByAlias(item);
-                    return (e && e.supportsResponseType("application/x-suggestions+json")) ? true : false;
-                });
-            }
+             completer: function (value)
+             {
+                 let ss = Components.classes["@mozilla.org/browser/search-service;1"]
+                                    .getService(Components.interfaces.nsIBrowserSearchService);
+                 let engines = ss.getEngines({})
+                                 .filter(function (engine) engine.supportsResponseType("application/x-suggestions+json"));
+                 
+                 return engines.map(function (engine) [engine.alias, engine.description]);
+             },
+             validator: function (value)
+             {
+                 let ss = Components.classes["@mozilla.org/browser/search-service;1"]
+                                    .getService(Components.interfaces.nsIBrowserSearchService);
+
+                 return value.split(",").every(function (alias) {
+                     let engine = ss.getEngineByAlias(alias);
+                     return engine && engine.supportsResponseType("application/x-suggestions+json");
+                 });
+             }
          });
 
     liberator.options.add(["showmode", "smd"],
@@ -330,12 +339,6 @@ liberator.CommandLine = function () //{{{
         "Define how command line completion works",
         "stringlist", "list:full",
         {
-            validator: function (value)
-            {
-                return value.split(",").every(
-                    function (item) /^(full|longest|list|list:full|list:longest|)$/.test(item)
-                );
-            },
             completer: function (filter)
             {
                 return [
@@ -347,6 +350,12 @@ liberator.CommandLine = function () //{{{
                     ["list:longest",  "List all and complete common string"],
                 ];
             },
+            validator: function (value)
+            {
+                return value.split(",").every(
+                    function (item) /^(full|longest|list|list:full|list:longest|)$/.test(item)
+                );
+            }
         });
 
     liberator.options.add(["wildignore", "wig"],
@@ -1406,7 +1415,6 @@ liberator.StatusLine = function () //{{{
 
                 return value;
             },
-            validator: function (value) value >= 0 && value <= 2,
             completer: function (filter)
             {
                 return [
@@ -1414,7 +1422,8 @@ liberator.StatusLine = function () //{{{
                   ["1", "Display status line only if there are multiple windows"],
                   ["2", "Always display status line"],
                 ];
-            }
+            },
+            validator: function (value) value >= 0 && value <= 2
         });
 
     /////////////////////////////////////////////////////////////////////////////}}}
diff --git a/content/vimperator.js b/content/vimperator.js
index 01f11cfd..068a8738 100644
--- a/content/vimperator.js
+++ b/content/vimperator.js
@@ -380,7 +380,6 @@ liberator.config = { //{{{
 
                     return value;
                 },
-
                 getter: function ()
                 {
                     return Components.classes['@mozilla.org/network/io-service;1']