diff --git a/codepot/etc/codepot.ini.in b/codepot/etc/codepot.ini.in
index a53fe69c..78599f7c 100644
--- a/codepot/etc/codepot.ini.in
+++ b/codepot/etc/codepot.ini.in
@@ -37,16 +37,24 @@ ldap_password_format = "${password}"
 ;------------------------------------------------------------------------------
 language = "auto"
 
-;------------------------------------------------------------------------------
-; When set to yes, viewing pages require a user to sign in.
-;------------------------------------------------------------------------------
-always_require_signin = "no"
-
 ;------------------------------------------------------------------------------
 ; Use websvn as a repository browser.
 ;------------------------------------------------------------------------------
 enable_websvn = "no"
 
+;------------------------------------------------------------------------------
+; When set to yes, viewing pages require a user to sign in.
+;------------------------------------------------------------------------------
+singin_compulsory = "no"
+
+;------------------------------------------------------------------------------
+; When set to yes, non-http access is diverted to https using 
+; the base URL specified in https_base_url. api calls are not affected.
+; change api_base_url to force https api calls instead.
+;------------------------------------------------------------------------------
+https_compulsory = "no"
+https_url = "https://${SERVER_NAME}${REQUEST_URI}"
+
 ;------------------------------------------------------------------------------
 ; API base URL
 ;------------------------------------------------------------------------------
diff --git a/codepot/src/codepot/controllers/file.php b/codepot/src/codepot/controllers/file.php
index 70395d2c..fa53121d 100644
--- a/codepot/src/codepot/controllers/file.php
+++ b/codepot/src/codepot/controllers/file.php
@@ -26,7 +26,7 @@ class File extends Controller
 		$this->load->model ('FileModel', 'files');
 	
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -64,7 +64,7 @@ class File extends Controller
 		$this->load->model ('FileModel', 'files');
 
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -109,7 +109,7 @@ class File extends Controller
 		$this->load->model ('FileModel', 'files');
 
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
diff --git a/codepot/src/codepot/controllers/project.php b/codepot/src/codepot/controllers/project.php
index 77a1b216..b28a5584 100644
--- a/codepot/src/codepot/controllers/project.php
+++ b/codepot/src/codepot/controllers/project.php
@@ -25,7 +25,7 @@ class Project extends Controller
 		$this->load->model ('ProjectModel', 'projects');
 
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '') 
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '') 
 			redirect ('main/signin');
 
 		$data['login'] = $login;
diff --git a/codepot/src/codepot/controllers/source.php b/codepot/src/codepot/controllers/source.php
index 9db21829..386095ca 100644
--- a/codepot/src/codepot/controllers/source.php
+++ b/codepot/src/codepot/controllers/source.php
@@ -33,7 +33,7 @@ class Source extends Controller
 		$this->load->model ('SubversionModel', 'subversion');
 	
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -105,7 +105,7 @@ class Source extends Controller
 		$this->load->model ('SubversionModel', 'subversion');
 	
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -164,7 +164,7 @@ class Source extends Controller
 		$this->load->model ('SubversionModel', 'subversion');
 	
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -213,7 +213,7 @@ class Source extends Controller
 		$this->load->model ('SubversionModel', 'subversion');
 	
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -262,7 +262,7 @@ class Source extends Controller
 		$this->load->model ('SubversionModel', 'subversion');
 
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
diff --git a/codepot/src/codepot/controllers/user.php b/codepot/src/codepot/controllers/user.php
index 07714886..898047b5 100644
--- a/codepot/src/codepot/controllers/user.php
+++ b/codepot/src/codepot/controllers/user.php
@@ -27,7 +27,7 @@ class User extends Controller
 	function home ()
 	{
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 
 		$this->load->model ('SiteModel', 'sites');
@@ -74,7 +74,7 @@ class User extends Controller
 	function projectlist ()
 	{
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 
 		$this->load->model ('ProjectModel', 'projects');
diff --git a/codepot/src/codepot/controllers/wiki.php b/codepot/src/codepot/controllers/wiki.php
index 0a9464ac..5672fe50 100644
--- a/codepot/src/codepot/controllers/wiki.php
+++ b/codepot/src/codepot/controllers/wiki.php
@@ -28,7 +28,7 @@ class Wiki extends Controller
 		$this->load->model ('WikiModel', 'wikis');
 	
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
@@ -66,7 +66,7 @@ class Wiki extends Controller
 		$this->load->model ('WikiModel', 'wikis');
 
 		$login = $this->login->getUser ();
-		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $login['id'] == '')
+		if (CODEPOT_SIGNIN_COMPULSORY && $login['id'] == '')
 			redirect ('main/signin');
 		$data['login'] = $login;
 
diff --git a/codepot/src/codepot/views/source_blame.php b/codepot/src/codepot/views/source_blame.php
index 2157f106..940d64a4 100644
--- a/codepot/src/codepot/views/source_blame.php
+++ b/codepot/src/codepot/views/source_blame.php
@@ -121,7 +121,7 @@ print anchor ("source/history/{$project->id}/{$xpar}", $this->lang->line('Histor
 	if ($fileext == "") $fileext = "html"
 ?>
 
-<pre class="prettyprint lang-<?=$fileext?>">
+<pre class="prettyprint lang-<?=$fileext?>" id="project_source_blame_mainarea_result_pre">
 <?php
 
 	$content = $file['content'];
diff --git a/codepot/src/codepot/views/source_diff.php b/codepot/src/codepot/views/source_diff.php
index 86c79aa2..51d8b0b8 100644
--- a/codepot/src/codepot/views/source_diff.php
+++ b/codepot/src/codepot/views/source_diff.php
@@ -184,7 +184,8 @@ $this->load->view (
 				$diffclass = array_key_exists('rev1diffclass', $x)? $x['rev1diffclass']: 'diff';
 				print "<td class='{$diffclass}'>";
 				print "<pre class='prettyprint lang-{$fileext}'>";
-				print htmlspecialchars($x['rev1line']);
+				if ($x['rev1line'] == '') print '&nbsp;';
+				else print htmlspecialchars($x['rev1line']);
 				print '</pre>';
 				print '</td>';
 			}
@@ -200,7 +201,8 @@ $this->load->view (
 				$diffclass = array_key_exists('rev2diffclass', $x)? $x['rev2diffclass']: 'diff';
 				print "<td class='{$diffclass}'>";
 				print "<pre class='prettyprint lang-{$fileext}'>";
-				print htmlspecialchars($x['rev2line']);
+				if ($x['rev2line'] == '') print '&nbsp;';
+				else print htmlspecialchars($x['rev2line']);
 				print '</pre>';
 				print '</td>';
 			}
diff --git a/codepot/src/config.php.in b/codepot/src/config.php.in
index df5b628d..9d991b30 100644
--- a/codepot/src/config.php.in
+++ b/codepot/src/config.php.in
@@ -13,12 +13,15 @@ function load_ini ($file)
 	if (/*$cfg === FALSE*/ $cfg == FALSE) die ("ERROR: cannot parse $file");
 
 	$xcfgs = array (
-		array ('default_banner',               'string',     '@PACKAGE@'),
 		array ('default_siteid',               'string',     'default'),
+		array ('default_banner',               'string',     '@PACKAGE@'),
+
 		array ('language',                     'string',     'auto'),
-		array ('always_require_signin',        'boolean',    FALSE),
 		array ('enable_websvn',                'boolean',    FALSE),
 
+		array ('signin_compulsory',            'boolean',    FALSE),
+		array ('https_compulsory',             'boolean',    FALSE),
+		array ('https_url',                    'string',     'https://${SERVER_NAME}${REQUEST_URI}'),
 		array ('api_base_url',                 'string',     'http://127.0.0.1'),
 		array ('svn_base_url',                 'string',     'http://${SERVER_NAME}:${SERVER_PORT}/svn'),
 
diff --git a/codepot/src/css/common.css b/codepot/src/css/common.css
index d690baf7..f07202da 100644
--- a/codepot/src/css/common.css
+++ b/codepot/src/css/common.css
@@ -121,6 +121,7 @@ body {
 	margin-top: 0.2em;
 	margin-bottom: 0.2em;
         font-weight: bold;
+	overflow: auto;
 }
 
 .content .mainarea .title a {
diff --git a/codepot/src/css/project.css b/codepot/src/css/project.css
index 273d2c79..ae28e1d1 100644
--- a/codepot/src/css/project.css
+++ b/codepot/src/css/project.css
@@ -54,6 +54,11 @@
 	position: relative;
 }
 
+#project_source_file_mainarea_result_pre {
+	/* make it the same as font-size of info .title below */
+	padding-top: 0.8em;
+}
+
 #project_source_file_mainarea_result_info {
 	position: absolute;
 	top: 0;
@@ -93,6 +98,11 @@
 	position: relative;
 }
 
+#project_source_blame_mainarea_result_pre {
+	/* make it the same as font-size of info .title below */
+	padding-top: 0.8em;
+}
+
 #project_source_blame_mainarea_result_info {
 	position: absolute;
 	top: 0;
diff --git a/codepot/src/index.php b/codepot/src/index.php
index f9cfa523..1216c843 100644
--- a/codepot/src/index.php
+++ b/codepot/src/index.php
@@ -39,6 +39,30 @@ define('FCPATH', str_replace(SELF, '', __FILE__));
 define('BASEPATH', $system_folder.'/');
 define('APPPATH', $application_folder.'/');
 
+/*
+|---------------------------------------------------------------
+| COMPULSORY HTTPS 
+|---------------------------------------------------------------
+*/
+if (CODEPOT_HTTPS_COMPULSORY)
+{
+	if (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on') 
+	{
+		/* force https except api calls */
+
+		$tail = substr ($_SERVER['REQUEST_URI'], strlen($_SERVER['SCRIPT_NAME']));
+		//$tail = $_SERVER['PATH_INFO'];
+		if (strncmp ($tail, "/api/", 5) != 0)
+		{
+			require_once dirname(__FILE__) . '/codepot/libraries/converter.php';
+			$converter = new Converter ();
+			$url = $converter->expand (CODEPOT_HTTPS_URL, $_SERVER);
+			header("Location: $url");
+			exit;
+		}
+	}
+}
+
 /*
 |---------------------------------------------------------------
 | LOAD THE FRONT CONTROLLER