hmm, forgot what I changed :)

chrome/content/vimperator/commands.js

@@ -1160,7 +1160,7 @@ function bmshow(filter, fullmode)
     {
         var items = get_bookmark_completions(filter);
         preview_window_fill(items);
-        preview_window.hidden = false;
+        preview_window_show();
     }
 }
 function hsshow(filter, fullmode)
@@ -1171,7 +1171,7 @@ function hsshow(filter, fullmode)
     {
         var items = get_history_completions(filter);
         preview_window_fill(items);
-        preview_window.hidden = false;
+        preview_window_show();
     }
 }
 function bushow(filter, in_comp_window)
@@ -1186,7 +1186,7 @@ function bushow(filter, in_comp_window)
     {
         var items = get_buffer_completions(filter);
         preview_window_fill(items);
-        preview_window.hidden = false;
+        preview_window_show();
     }
 }
 
@@ -1418,10 +1418,10 @@ function beep()
 // quit vimperator, no matter how many tabs/windows are open
 function quit(save_session)
 {
-    if (save_history)
-        set_firefox_pref("browser.sessionstore.resume_session_once", true);
+    if (save_session)
+        set_firefox_pref("browser.startup.page", 3); // start with saved session
     else
-        set_firefox_pref("browser.sessionstore.resume_session_once", false);
+        set_firefox_pref("browser.startup.page", 1); // start with default homepage session
 
     goQuitApplication();
 }

chrome/content/vimperator/completion.js

@@ -71,11 +71,8 @@ function completion_show_list()/*{{{*/
         items = COMPLETION_MAXITEMS;
     if (items > 1) // FIXME
     {
-        //alert(completion_list.getRowCount().toString());
         completion_list.setAttribute("rows", items.toString());
-        //completion_list.rowCountChanged(0, items);
         completion_list.hidden = false;
-        //completion_list.selectedIndex = selected_index;
     }
     else
         completion_list.hidden = true;
@@ -514,4 +511,16 @@ function preview_window_select(event)
         return false;
 }
 
+function preview_window_show()/*{{{*/
+{
+    var items = preview_window.getElementsByTagName("listitem").length;
+    var height = get_pref("previewheight");
+    if (items > height)
+        items = height;
+    if (items < 3)
+        items = 3;
+
+    preview_window.setAttribute("rows", items.toString());
+    preview_window.hidden = false;
+}/*}}}*/
 // vim: set fdm=marker sw=4 ts=4 et:

chrome/content/vimperator/settings.js

@@ -173,6 +173,17 @@ var g_settings = [/*{{{*/
         true,
         null,
         null
+    ],
+    [
+        ["previewheight", "pvh"],
+        "Default height for preview window",
+        "Value must be between 1 and 50. If the value is too high, completions may cover the command-line. Close the preview window with <code class=command>:pclose</close>.",
+        function(value) { set_pref("previewheight", value); },
+        function() { return get_pref("previewheight"); },
+        "number",
+        10,
+        function (value) { if (value>=1 && value <=50) return true; else return false; },
+        null
     ],
 	[
 		["showmode", "smd"],

chrome/content/vimperator/vimperator.js

@@ -272,7 +272,7 @@ function init()
         setTimeout(function() { get_url_completions(""); } , 100);
 
     // firefox preferences which we need to be changed to work well with vimperator
-    set_firefox_pref("browser.sessionstore.resume_session_once", true);
+    set_firefox_pref("browser.startup.page", 3); // start with saved session
 
     logMessage("Initialized");
 }