Add rudimentary paren/brace/quote matching for JS

content/completion.js

@@ -225,6 +225,8 @@ liberator.Completion = function () //{{{
             {
                 if (top[CHAR] != arg)
                     throw new Error("Invalid JS");
+                if (i == str.length - 1)
+                    liberator.completion.parenMatch = top[OFFSET];
                 // The closing character of this stack frame will have pushed a new
                 // statement, leaving us with an empty statement. This doesn't matter,
                 // now, as we simply throw away the frame when we pop it, but it may later.
@@ -798,6 +800,8 @@ liberator.Completion = function () //{{{
         // provides completions for ex commands, including their arguments
         ex: function (str)
         {
+            this.filterString = "";
+            this.parenMatch = null;
             substrings = [];
             if (str.indexOf(cacheFilter["ex"]) != 0)
             {
@@ -935,7 +939,7 @@ liberator.Completion = function () //{{{
                         if (h[0].indexOf(begin) == 0 && (!end.length || h[0].substr(-end.length) == end))
                         {
                             let query = h[0].substring(begin.length, h[0].length - end.length);
-                            searches.push([decodeURIComponent(query),
+                            searches.push([decodeURIComponent(query.replace("+", "%20")),
                                            <>{begin}<span class="hl-Filter">{query}</span>{end}</>,
                                            k[2]]);
                         }

content/ui.js

@@ -1150,13 +1150,33 @@ liberator.CommandLine = function () //{{{
             }
         },
 
-        // to allow asynchronous adding of completions, broken
-        // since the completion -> ItemList rewrite
+        // to allow asynchronous adding of completions
         setCompletions: function (compl, start)
         {
             if (liberator.mode != liberator.modes.COMMAND_LINE)
                 return;
 
+            // FIXME: Kludge.
+            try // Firefox <3.1 doesn't have repaintSelection
+            {
+                const SEL_TYPE = Components.interfaces.nsISelectionController.SELECTION_FIND;
+                let editor = document.getElementById("liberator-commandline-command")
+                                            .inputField.QueryInterface(Components.interfaces.nsIDOMNSEditableElement).editor;
+                let sel = editor.selectionController.getSelection(SEL_TYPE);
+                sel.removeAllRanges();
+                if (liberator.completion.parenMatch != null)
+                {
+                    let range = editor.selection.getRangeAt(0).cloneRange();
+                    let paren = liberator.completion.parenMatch + this.getCommand().indexOf(" ") + 1;
+                    let node = range.startContainer;
+                    range.setStart(node, paren);
+                    range.setEnd(node, paren + 1);
+                    sel.addRange(range);
+                    editor.selectionController.repaintSelection(SEL_TYPE);
+                }
+            }
+            catch (e) {}
+
             /* Only hide if not pending.
             if (compl.length == 0)
                 return completionList.hide();

content/util.js

@@ -256,6 +256,7 @@ liberator.util = { //{{{
             obj = <span class="hl-Title hl-Object">{obj}</span>.toXMLString();
         string += obj + "::\n";
 
+        let keys = [];
         try // window.content often does not want to be queried with "var i in object"
         {
             for (let i in object)
@@ -273,12 +274,12 @@ liberator.util = { //{{{
                     value = value.toXMLString();
                     i = <span style="font-weight: bold;">{i}</span>.toXMLString();
                 }
-                string += i + ": " + value + "\n";
+                keys.push(i + ": " + value);
             }
         }
         catch (e) {}
 
-        return string;
+        return string + keys.sort().join("\n") + "\n";
     },
 
     range: function (start, end)