add 'wildignore' option

content/completion.js

@@ -225,6 +225,7 @@ liberator.Completion = function () //{{{
         {
             var dir = "", compl = "";
             var matches = filter.match(/^(.*[\/\\])?(.*?)$/);
+
             if (matches)
             {
                 dir = matches[1] || ""; // "" is expanded inside readDirectory to the current dir
@@ -232,9 +233,20 @@ liberator.Completion = function () //{{{
             }
 
             var files = [], mapped = [];
+
             try
             {
                 files = liberator.io.readDirectory(dir);
+
+                if (liberator.options["wildignore"])
+                {
+                    var wimRegexp = new RegExp("(^" + liberator.options["wildignore"].replace(",", "|", "g") + ")$");
+
+                    files = files.filter(function (f) {
+                        return f.isDirectory() || !wimRegexp.test(f.leafName);
+                    });
+                }
+
                 mapped = files.map(function (file) {
                     return [tail ? file.leafName : (dir + file.leafName), file.isDirectory() ? "Directory" : "File"];
                 }).sort(function (a, b) {

content/ui.js

@@ -340,6 +340,25 @@ liberator.CommandLine = function () //{{{
             },
         });
 
+    liberator.options.add(["wildignore", "wig"],
+        "List of file patterns to ignore when completing files",
+        "stringlist", "",
+        {
+            validator: function (value)
+            {
+                // TODO: allow for escaping the ","
+                try
+                {
+                    new RegExp("^(" + value.replace(",", "|", "g") + ")$");
+                    return true;
+                }
+                catch (e)
+                {
+                    return false;
+                }
+            }
+        });
+
     liberator.options.add(["wildoptions", "wop"],
         "Change how command line completion is done",
         "stringlist", "",