diff --git a/django/contrib/admin/media/css/changelists.css b/django/contrib/admin/media/css/changelists.css
index fbcbe56f06d..4834be46854 100644
--- a/django/contrib/admin/media/css/changelists.css
+++ b/django/contrib/admin/media/css/changelists.css
@@ -42,9 +42,9 @@
 
 /* PAGINATOR */
 .paginator { font-size:11px; padding-top:10px; padding-bottom:10px; line-height:22px; margin:0; border-top:1px solid #ddd; }
-.paginator a:link, .paginator a:visited	{ padding:2px 6px; border:solid 1px #ccc; background:white; text-decoration:none; }
+.paginator a:link, .paginator a:visited { padding:2px 6px; border:solid 1px #ccc; background:white; text-decoration:none; }
 .paginator a.showall { padding:0 !important; border:none !important; }
 .paginator a.showall:hover { color:#036 !important; background:transparent !important; }
-.paginator .end	{ border-width:2px !important; margin-right:6px; }
+.paginator .end { border-width:2px !important; margin-right:6px; }
 .paginator .this-page { padding:2px 6px; font-weight:bold; font-size:13px; vertical-align:top; }
 .paginator a:hover { color:white; background:#5b80b2; border-color:#036; }
diff --git a/django/contrib/admin/media/css/forms.css b/django/contrib/admin/media/css/forms.css
index b66f268feca..468e06a8a20 100644
--- a/django/contrib/admin/media/css/forms.css
+++ b/django/contrib/admin/media/css/forms.css
@@ -7,10 +7,10 @@
 form .form-row p { padding-left:0; font-size:11px; }
 
 /* FORM LABELS */
-form h4	{ margin:0 !important; padding:0 !important; border:none !important; }
+form h4 { margin:0 !important; padding:0 !important; border:none !important; }
 label { font-weight:normal !important; color:#666; font-size:12px; }
 label.inline { margin-left:20px; }
-.required label, label.required	{ font-weight:bold !important; color:#333 !important; }
+.required label, label.required { font-weight:bold !important; color:#333 !important; }
 
 /* RADIO BUTTONS */
 form ul.radiolist li { list-style-type:none; }
diff --git a/django/contrib/admin/media/css/global.css b/django/contrib/admin/media/css/global.css
index a87931681ce..16c582d5786 100644
--- a/django/contrib/admin/media/css/global.css
+++ b/django/contrib/admin/media/css/global.css
@@ -31,7 +31,7 @@ fieldset { margin:0; padding:0; }
 blockquote { font-size:11px; color:#777; margin-left:2px; padding-left:10px; border-left:5px solid #ddd; }
 code, pre { font-family:"Bitstream Vera Sans Mono", Monaco, "Courier New", Courier, monospace; background:inherit; color:#666; font-size:11px; }
 pre.literal-block { margin:10px; background:#eee; padding:6px 8px; }
-code strong	{ color:#930; }
+code strong { color:#930; }
 hr { clear:both; color:#eee; background-color:#eee; height:1px; border:none; margin:0; padding:0; font-size:1px; line-height:1px; }
 
 /* TEXT STYLES & MODIFIERS */
@@ -81,7 +81,7 @@ table.orderable tbody tr td:first-child { padding-left:14px; background-image:ur
 table.orderable-initalized .order-cell, body>tr>td.order-cell { display:none; }
 
 /* FORM DEFAULTS */
-input, textarea, select	{ margin:2px 0; padding:2px 3px; vertical-align:middle; font-family:"Lucida Grande", Verdana, Arial, sans-serif; font-weight:normal; font-size:11px; }
+input, textarea, select { margin:2px 0; padding:2px 3px; vertical-align:middle; font-family:"Lucida Grande", Verdana, Arial, sans-serif; font-weight:normal; font-size:11px; }
 textarea { vertical-align:top !important; }
 input[type=text], input[type=password], textarea, select, .vTextField { border:1px solid #ccc; }
 
@@ -92,7 +92,7 @@ input[type=submit].default, .submit-row input.default { border:2px solid #5b80b2
 input[type=submit].default:active { background-image:url(../img/admin/default-bg-reverse.gif); background-position:top; }
 
 /* MODULES */
-.module	{ border:1px solid #ccc; margin-bottom:5px; background:white; }
+.module { border:1px solid #ccc; margin-bottom:5px; background:white; }
 .module p, .module ul, .module h3, .module h4, .module dl, .module pre { padding-left:10px; padding-right:10px; }
 .module blockquote { margin-left:12px; }
 .module ul, .module ol { margin-left:1.5em; }
diff --git a/django/contrib/admin/media/css/layout.css b/django/contrib/admin/media/css/layout.css
index befe4fc1ca6..17c52861ee6 100644
--- a/django/contrib/admin/media/css/layout.css
+++ b/django/contrib/admin/media/css/layout.css
@@ -4,7 +4,7 @@
 #header { width:100%; }
 #content-main { float:left; width:100%; }
 #content-related { float:right; width:18em; position:relative; margin-right:-19em; }
-#footer	{ clear:both; padding:10px; }
+#footer { clear:both; padding:10px; }
 
 /*  COLUMN TYPES  */
 .colMS { margin-right:20em !important; }
@@ -16,14 +16,14 @@
 .dashboard #content { width:500px; }
 
 /*  HEADER  */
-#header	{ background:#417690; color:#ffc; overflow:hidden; }
+#header { background:#417690; color:#ffc; overflow:hidden; }
 #header a:link, #header a:visited { color:white; }
 #header a:hover { text-decoration:underline; }
 #branding h1 { padding:0 10px; font-size:18px; margin:8px 0; font-weight:normal; color:#f4f379; }
 #branding h2 { padding:0 10px; font-size:14px; margin:-8px 0 8px 0; font-weight:normal; color:#ffc; }
-#user-tools	{ position:absolute; top:0; right:0; padding:1.2em 10px; font-size:11px; text-align:right; }
+#user-tools { position:absolute; top:0; right:0; padding:1.2em 10px; font-size:11px; text-align:right; }
 
 /* SIDEBAR */
 #content-related h3 { font-size:12px; color:#666; margin-bottom:3px; }
 #content-related h4 { font-size:11px; }
-#content-related .module h2	{ background:#eee url(../img/admin/nav-bg.gif) bottom left repeat-x; color:#666; }
\ No newline at end of file
+#content-related .module h2 { background:#eee url(../img/admin/nav-bg.gif) bottom left repeat-x; color:#666; }
\ No newline at end of file
diff --git a/django/contrib/admin/media/css/rtl.css b/django/contrib/admin/media/css/rtl.css
index c29391cabf3..1974e7c2ecf 100644
--- a/django/contrib/admin/media/css/rtl.css
+++ b/django/contrib/admin/media/css/rtl.css
@@ -16,7 +16,7 @@ th { text-align: right; }
 
 
 /* layout styles */
-#user-tools	{ right:auto; left:0; text-align:left; }
+#user-tools { right:auto; left:0; text-align:left; }
 div.breadcrumbs { text-align:right; }
 #content-main { float:right;}
 #content-related { float:left; margin-left:-19em; margin-right:auto;}
diff --git a/django/contrib/admin/media/js/admin/CollapsedFieldsets.js b/django/contrib/admin/media/js/admin/CollapsedFieldsets.js
index 97f0a68d04d..c8426db2281 100644
--- a/django/contrib/admin/media/js/admin/CollapsedFieldsets.js
+++ b/django/contrib/admin/media/js/admin/CollapsedFieldsets.js
@@ -3,83 +3,83 @@
 // link when the fieldset is visible.
 
 function findForm(node) {
-	// returns the node of the form containing the given node
-	if (node.tagName.toLowerCase() != 'form') {
-		return findForm(node.parentNode);
-	}
-	return node;
+    // returns the node of the form containing the given node
+    if (node.tagName.toLowerCase() != 'form') {
+        return findForm(node.parentNode);
+    }
+    return node;
 }
 
 var CollapsedFieldsets = {
-	collapse_re: /\bcollapse\b/,   // Class of fieldsets that should be dealt with.
-	collapsed_re: /\bcollapsed\b/, // Class that fieldsets get when they're hidden.
-	collapsed_class: 'collapsed',
-	init: function() {
-		var fieldsets = document.getElementsByTagName('fieldset');
-		var collapsed_seen = false;
-		for (var i = 0, fs; fs = fieldsets[i]; i++) {
-			// Collapse this fieldset if it has the correct class, and if it
-			// doesn't have any errors. (Collapsing shouldn't apply in the case
-			// of error messages.)
-			if (fs.className.match(CollapsedFieldsets.collapse_re) && !CollapsedFieldsets.fieldset_has_errors(fs)) {
-				collapsed_seen = true;
-				// Give it an additional class, used by CSS to hide it.
-				fs.className += ' ' + CollapsedFieldsets.collapsed_class;
-				// (<a id="fieldsetcollapser3" class="collapse-toggle" href="#">Show</a>)
-				var collapse_link = document.createElement('a');
-				collapse_link.className = 'collapse-toggle';
-				collapse_link.id = 'fieldsetcollapser' + i;
-				collapse_link.onclick = new Function('CollapsedFieldsets.show('+i+'); return false;');
-				collapse_link.href = '#';
-				collapse_link.innerHTML = gettext('Show');
-				var h2 = fs.getElementsByTagName('h2')[0];
-				h2.appendChild(document.createTextNode(' ('));
-				h2.appendChild(collapse_link);
-				h2.appendChild(document.createTextNode(')'));
-			}
-		}
-		if (collapsed_seen) {
-			// Expand all collapsed fieldsets when form is submitted.
-			addEvent(findForm(document.getElementsByTagName('fieldset')[0]), 'submit', function() { CollapsedFieldsets.uncollapse_all(); });
-		}
-	},
-	fieldset_has_errors: function(fs) {
-		// Returns true if any fields in the fieldset have validation errors.
-		var divs = fs.getElementsByTagName('div');
-		for (var i=0; i<divs.length; i++) {
-			if (divs[i].className.match(/\berror\b/)) {
-				return true;
-			}
-		}
-		return false;
-	},
-	show: function(fieldset_index) {
-		var fs = document.getElementsByTagName('fieldset')[fieldset_index];
-		// Remove the class name that causes the "display: none".
-		fs.className = fs.className.replace(CollapsedFieldsets.collapsed_re, '');
-		// Toggle the "Show" link to a "Hide" link
-		var collapse_link = document.getElementById('fieldsetcollapser' + fieldset_index);
-		collapse_link.onclick = new Function('CollapsedFieldsets.hide('+fieldset_index+'); return false;');
-		collapse_link.innerHTML = gettext('Hide');
-	},
-	hide: function(fieldset_index) {
-		var fs = document.getElementsByTagName('fieldset')[fieldset_index];
-		// Add the class name that causes the "display: none".
-		fs.className += ' ' + CollapsedFieldsets.collapsed_class;
-		// Toggle the "Hide" link to a "Show" link
-		var collapse_link = document.getElementById('fieldsetcollapser' + fieldset_index);
+    collapse_re: /\bcollapse\b/,   // Class of fieldsets that should be dealt with.
+    collapsed_re: /\bcollapsed\b/, // Class that fieldsets get when they're hidden.
+    collapsed_class: 'collapsed',
+    init: function() {
+        var fieldsets = document.getElementsByTagName('fieldset');
+        var collapsed_seen = false;
+        for (var i = 0, fs; fs = fieldsets[i]; i++) {
+            // Collapse this fieldset if it has the correct class, and if it
+            // doesn't have any errors. (Collapsing shouldn't apply in the case
+            // of error messages.)
+            if (fs.className.match(CollapsedFieldsets.collapse_re) && !CollapsedFieldsets.fieldset_has_errors(fs)) {
+                collapsed_seen = true;
+                // Give it an additional class, used by CSS to hide it.
+                fs.className += ' ' + CollapsedFieldsets.collapsed_class;
+                // (<a id="fieldsetcollapser3" class="collapse-toggle" href="#">Show</a>)
+                var collapse_link = document.createElement('a');
+                collapse_link.className = 'collapse-toggle';
+                collapse_link.id = 'fieldsetcollapser' + i;
+                collapse_link.onclick = new Function('CollapsedFieldsets.show('+i+'); return false;');
+                collapse_link.href = '#';
+                collapse_link.innerHTML = gettext('Show');
+                var h2 = fs.getElementsByTagName('h2')[0];
+                h2.appendChild(document.createTextNode(' ('));
+                h2.appendChild(collapse_link);
+                h2.appendChild(document.createTextNode(')'));
+            }
+        }
+        if (collapsed_seen) {
+            // Expand all collapsed fieldsets when form is submitted.
+            addEvent(findForm(document.getElementsByTagName('fieldset')[0]), 'submit', function() { CollapsedFieldsets.uncollapse_all(); });
+        }
+    },
+    fieldset_has_errors: function(fs) {
+        // Returns true if any fields in the fieldset have validation errors.
+        var divs = fs.getElementsByTagName('div');
+        for (var i=0; i<divs.length; i++) {
+            if (divs[i].className.match(/\berror\b/)) {
+                return true;
+            }
+        }
+        return false;
+    },
+    show: function(fieldset_index) {
+        var fs = document.getElementsByTagName('fieldset')[fieldset_index];
+        // Remove the class name that causes the "display: none".
+        fs.className = fs.className.replace(CollapsedFieldsets.collapsed_re, '');
+        // Toggle the "Show" link to a "Hide" link
+        var collapse_link = document.getElementById('fieldsetcollapser' + fieldset_index);
+        collapse_link.onclick = new Function('CollapsedFieldsets.hide('+fieldset_index+'); return false;');
+        collapse_link.innerHTML = gettext('Hide');
+    },
+    hide: function(fieldset_index) {
+        var fs = document.getElementsByTagName('fieldset')[fieldset_index];
+        // Add the class name that causes the "display: none".
+        fs.className += ' ' + CollapsedFieldsets.collapsed_class;
+        // Toggle the "Hide" link to a "Show" link
+        var collapse_link = document.getElementById('fieldsetcollapser' + fieldset_index);
         collapse_link.onclick = new Function('CollapsedFieldsets.show('+fieldset_index+'); return false;');
-		collapse_link.innerHTML = gettext('Show');
-	},
+        collapse_link.innerHTML = gettext('Show');
+    },
 
-	uncollapse_all: function() {
-		var fieldsets = document.getElementsByTagName('fieldset');
-		for (var i=0; i<fieldsets.length; i++) {
-			if (fieldsets[i].className.match(CollapsedFieldsets.collapsed_re)) {
-				CollapsedFieldsets.show(i);
-			}
-		}
-	}
+    uncollapse_all: function() {
+        var fieldsets = document.getElementsByTagName('fieldset');
+        for (var i=0; i<fieldsets.length; i++) {
+            if (fieldsets[i].className.match(CollapsedFieldsets.collapsed_re)) {
+                CollapsedFieldsets.show(i);
+            }
+        }
+    }
 }
 
 addEvent(window, 'load', CollapsedFieldsets.init);
diff --git a/django/contrib/admin/templates/admin/login.html b/django/contrib/admin/templates/admin/login.html
index 5f338f703e9..e5bda0f0e60 100644
--- a/django/contrib/admin/templates/admin/login.html
+++ b/django/contrib/admin/templates/admin/login.html
@@ -13,17 +13,17 @@
 {% endif %}
 <div id="content-main">
 <form action="{{ app_path }}" method="post" id="login-form">
-	<div class="form-row">
-		<label for="id_username">{% trans 'Username:' %}</label> <input type="text" name="username" id="id_username" />
-	</div>
-	<div class="form-row">
-		<label for="id_password">{% trans 'Password:' %}</label> <input type="password" name="password" id="id_password" />
-		<input type="hidden" name="this_is_the_login_form" value="1" />
-		<input type="hidden" name="post_data" value="{{ post_data }}" /> {% comment %}<span class="help">{% trans 'Have you <a href="/password_reset/">forgotten your password</a>?' %}</span>{% endcomment %}
-	</div>
-	<div class="submit-row">
-		<label>&nbsp;</label><input type="submit" value="{% trans 'Log in' %}" />
-	</div>
+  <div class="form-row">
+    <label for="id_username">{% trans 'Username:' %}</label> <input type="text" name="username" id="id_username" />
+  </div>
+  <div class="form-row">
+    <label for="id_password">{% trans 'Password:' %}</label> <input type="password" name="password" id="id_password" />
+    <input type="hidden" name="this_is_the_login_form" value="1" />
+    <input type="hidden" name="post_data" value="{{ post_data }}" /> {% comment %}<span class="help">{% trans 'Have you <a href="/password_reset/">forgotten your password</a>?' %}</span>{% endcomment %}
+  </div>
+  <div class="submit-row">
+    <label>&nbsp;</label><input type="submit" value="{% trans 'Log in' %}" />
+  </div>
 </form>
 
 <script type="text/javascript">
diff --git a/django/contrib/admin/templates/admin_doc/index.html b/django/contrib/admin/templates/admin_doc/index.html
index 331774d2b3d..74f9f20916a 100644
--- a/django/contrib/admin/templates/admin_doc/index.html
+++ b/django/contrib/admin/templates/admin_doc/index.html
@@ -9,17 +9,17 @@
 <h1>Documentation</h1>
 
 <div id="content-main">
-	<h3><a href="tags/">Tags</a></h3>
-	<p>List of all the template tags and their functions.</p>
+  <h3><a href="tags/">Tags</a></h3>
+  <p>List of all the template tags and their functions.</p>
 
-	<h3><a href="filters/">Filters</a></h3>
-	<p>Filters are actions which can be applied to variables in a template to alter the output.</p>
+  <h3><a href="filters/">Filters</a></h3>
+  <p>Filters are actions which can be applied to variables in a template to alter the output.</p>
 
-	<h3><a href="models/">Models</a></h3>
-	<p>Models are descriptions of all the objects in the system and their associated fields. Each model has a list of fields which can be accessed as template variables.</p>
+  <h3><a href="models/">Models</a></h3>
+  <p>Models are descriptions of all the objects in the system and their associated fields. Each model has a list of fields which can be accessed as template variables.</p>
 
-	<h3><a href="views/">Views</a></h3>
-	<p>Each page on the public site is generated by a view. The view defines which template is used to generate the page and which objects are available to that template.</p>
+  <h3><a href="views/">Views</a></h3>
+  <p>Each page on the public site is generated by a view. The view defines which template is used to generate the page and which objects are available to that template.</p>
 
     <h3><a href="bookmarklets/">Bookmarklets</a></h3>
     <p>Tools for your browser to quickly access admin functionality.</p>
diff --git a/django/contrib/admin/templates/admin_doc/missing_docutils.html b/django/contrib/admin/templates/admin_doc/missing_docutils.html
index d0b571f9579..cdeab0cdd8f 100644
--- a/django/contrib/admin/templates/admin_doc/missing_docutils.html
+++ b/django/contrib/admin/templates/admin_doc/missing_docutils.html
@@ -9,9 +9,9 @@
 <h1>Documentation</h1>
 
 <div id="content-main">
-	<h3>The admin documentation system requires Python's <a href="http://docutils.sf.net/">docutils</a> library.</h3>
+  <h3>The admin documentation system requires Python's <a href="http://docutils.sf.net/">docutils</a> library.</h3>
 
-	<p>Please ask your administrators to install <a href="http://docutils.sf.net/">docutils</a>.</p>
+  <p>Please ask your administrators to install <a href="http://docutils.sf.net/">docutils</a>.</p>
 </div>
 
 {% endblock %}
diff --git a/django/contrib/comments/models.py b/django/contrib/comments/models.py
index 23b0dfbde6b..a8aff1cfb3b 100644
--- a/django/contrib/comments/models.py
+++ b/django/contrib/comments/models.py
@@ -51,7 +51,7 @@ class CommentManager(models.Manager):
         extra_kwargs.setdefault('select', {})
         extra_kwargs['select']['_karma_total_good'] = 'SELECT COUNT(*) FROM comments_karmascore, comments_comment WHERE comments_karmascore.comment_id=comments_comment.id AND score=1'
         extra_kwargs['select']['_karma_total_bad'] = 'SELECT COUNT(*) FROM comments_karmascore, comments_comment WHERE comments_karmascore.comment_id=comments_comment.id AND score=-1'
-	return self.filter(**kwargs).extra(**extra_kwargs)
+        return self.filter(**kwargs).extra(**extra_kwargs)
 
     def user_is_moderator(self, user):
         if user.is_superuser:
diff --git a/django/dispatch/dispatcher.py b/django/dispatch/dispatcher.py
index d93f696685b..1a617b59460 100644
--- a/django/dispatch/dispatcher.py
+++ b/django/dispatch/dispatcher.py
@@ -6,24 +6,24 @@ system.
 
 Module attributes of note:
 
-	Any -- Singleton used to signal either "Any Sender" or
-		"Any Signal".  See documentation of the _Any class.
-	Anonymous -- Singleton used to signal "Anonymous Sender"
-		See documentation of the _Anonymous class.
+    Any -- Singleton used to signal either "Any Sender" or
+        "Any Signal".  See documentation of the _Any class.
+    Anonymous -- Singleton used to signal "Anonymous Sender"
+        See documentation of the _Anonymous class.
 
 Internal attributes:
-	WEAKREF_TYPES -- tuple of types/classes which represent
-		weak references to receivers, and thus must be de-
-		referenced on retrieval to retrieve the callable
-		object
-	connections -- { senderkey (id) : { signal : [receivers...]}}
-	senders -- { senderkey (id) : weakref(sender) }
-		used for cleaning up sender references on sender
-		deletion
-	sendersBack -- { receiverkey (id) : [senderkey (id)...] }
-		used for cleaning up receiver references on receiver
-		deletion, (considerably speeds up the cleanup process
-		vs. the original code.)
+    WEAKREF_TYPES -- tuple of types/classes which represent
+        weak references to receivers, and thus must be de-
+        referenced on retrieval to retrieve the callable
+        object
+    connections -- { senderkey (id) : { signal : [receivers...]}}
+    senders -- { senderkey (id) : weakref(sender) }
+        used for cleaning up sender references on sender
+        deletion
+    sendersBack -- { receiverkey (id) : [senderkey (id)...] }
+        used for cleaning up receiver references on receiver
+        deletion, (considerably speeds up the cleanup process
+        vs. the original code.)
 """
 from __future__ import generators
 import types, weakref
@@ -34,44 +34,44 @@ __cvsid__ = "$Id: dispatcher.py,v 1.9 2005/09/17 04:55:57 mcfletch Exp $"
 __version__ = "$Revision: 1.9 $"[11:-2]
 
 try:
-	True
+    True
 except NameError:
-	True = 1==1
-	False = 1==0
+    True = 1==1
+    False = 1==0
 
 class _Parameter:
-	"""Used to represent default parameter values."""
-	def __repr__(self):
-		return self.__class__.__name__
+    """Used to represent default parameter values."""
+    def __repr__(self):
+        return self.__class__.__name__
 
 class _Any(_Parameter):
-	"""Singleton used to signal either "Any Sender" or "Any Signal"
+    """Singleton used to signal either "Any Sender" or "Any Signal"
 
-	The Any object can be used with connect, disconnect,
-	send, or sendExact to signal that the parameter given
-	Any should react to all senders/signals, not just
-	a particular sender/signal.
-	"""
+    The Any object can be used with connect, disconnect,
+    send, or sendExact to signal that the parameter given
+    Any should react to all senders/signals, not just
+    a particular sender/signal.
+    """
 Any = _Any()
 
 class _Anonymous(_Parameter):
-	"""Singleton used to signal "Anonymous Sender"
+    """Singleton used to signal "Anonymous Sender"
 
-	The Anonymous object is used to signal that the sender
-	of a message is not specified (as distinct from being
-	"any sender").  Registering callbacks for Anonymous
-	will only receive messages sent without senders.  Sending
-	with anonymous will only send messages to those receivers
-	registered for Any or Anonymous.
+    The Anonymous object is used to signal that the sender
+    of a message is not specified (as distinct from being
+    "any sender").  Registering callbacks for Anonymous
+    will only receive messages sent without senders.  Sending
+    with anonymous will only send messages to those receivers
+    registered for Any or Anonymous.
 
-	Note:
-		The default sender for connect is Any, while the
-		default sender for send is Anonymous.  This has
-		the effect that if you do not specify any senders
-		in either function then all messages are routed
-		as though there was a single sender (Anonymous)
-		being used everywhere.
-	"""
+    Note:
+        The default sender for connect is Any, while the
+        default sender for send is Anonymous.  This has
+        the effect that if you do not specify any senders
+        in either function then all messages are routed
+        as though there was a single sender (Anonymous)
+        being used everywhere.
+    """
 Anonymous = _Anonymous()
 
 WEAKREF_TYPES = (weakref.ReferenceType, saferef.BoundMethodWeakref)
@@ -82,416 +82,416 @@ sendersBack = {}
 
 
 def connect(receiver, signal=Any, sender=Any, weak=True):
-	"""Connect receiver to sender for signal
+    """Connect receiver to sender for signal
 
-	receiver -- a callable Python object which is to receive
-		messages/signals/events.  Receivers must be hashable
-		objects.
+    receiver -- a callable Python object which is to receive
+        messages/signals/events.  Receivers must be hashable
+        objects.
 
-		if weak is True, then receiver must be weak-referencable
-		(more precisely saferef.safeRef() must be able to create
-		a reference to the receiver).
-	
-		Receivers are fairly flexible in their specification,
-		as the machinery in the robustApply module takes care
-		of most of the details regarding figuring out appropriate
-		subsets of the sent arguments to apply to a given
-		receiver.
+        if weak is True, then receiver must be weak-referencable
+        (more precisely saferef.safeRef() must be able to create
+        a reference to the receiver).
+    
+        Receivers are fairly flexible in their specification,
+        as the machinery in the robustApply module takes care
+        of most of the details regarding figuring out appropriate
+        subsets of the sent arguments to apply to a given
+        receiver.
 
-		Note:
-			if receiver is itself a weak reference (a callable),
-			it will be de-referenced by the system's machinery,
-			so *generally* weak references are not suitable as
-			receivers, though some use might be found for the
-			facility whereby a higher-level library passes in
-			pre-weakrefed receiver references.
+        Note:
+            if receiver is itself a weak reference (a callable),
+            it will be de-referenced by the system's machinery,
+            so *generally* weak references are not suitable as
+            receivers, though some use might be found for the
+            facility whereby a higher-level library passes in
+            pre-weakrefed receiver references.
 
-	signal -- the signal to which the receiver should respond
-	
-		if Any, receiver will receive any signal from the
-		indicated sender (which might also be Any, but is not
-		necessarily Any).
-		
-		Otherwise must be a hashable Python object other than
-		None (DispatcherError raised on None).
-		
-	sender -- the sender to which the receiver should respond
-	
-		if Any, receiver will receive the indicated signals
-		from any sender.
-		
-		if Anonymous, receiver will only receive indicated
-		signals from send/sendExact which do not specify a
-		sender, or specify Anonymous explicitly as the sender.
+    signal -- the signal to which the receiver should respond
+    
+        if Any, receiver will receive any signal from the
+        indicated sender (which might also be Any, but is not
+        necessarily Any).
+        
+        Otherwise must be a hashable Python object other than
+        None (DispatcherError raised on None).
+        
+    sender -- the sender to which the receiver should respond
+    
+        if Any, receiver will receive the indicated signals
+        from any sender.
+        
+        if Anonymous, receiver will only receive indicated
+        signals from send/sendExact which do not specify a
+        sender, or specify Anonymous explicitly as the sender.
 
-		Otherwise can be any python object.
-		
-	weak -- whether to use weak references to the receiver
-		By default, the module will attempt to use weak
-		references to the receiver objects.  If this parameter
-		is false, then strong references will be used.
+        Otherwise can be any python object.
+        
+    weak -- whether to use weak references to the receiver
+        By default, the module will attempt to use weak
+        references to the receiver objects.  If this parameter
+        is false, then strong references will be used.
 
-	returns None, may raise DispatcherTypeError
-	"""
-	if signal is None:
-		raise errors.DispatcherTypeError(
-			'Signal cannot be None (receiver=%r sender=%r)'%( receiver,sender)
-		)
-	if weak:
-		receiver = saferef.safeRef(receiver, onDelete=_removeReceiver)
-	senderkey = id(sender)
-	if connections.has_key(senderkey):
-		signals = connections[senderkey]
-	else:
-		connections[senderkey] = signals = {}
-	# Keep track of senders for cleanup.
-	# Is Anonymous something we want to clean up?
-	if sender not in (None, Anonymous, Any):
-		def remove(object, senderkey=senderkey):
-			_removeSender(senderkey=senderkey)
-		# Skip objects that can not be weakly referenced, which means
-		# they won't be automatically cleaned up, but that's too bad.
-		try:
-			weakSender = weakref.ref(sender, remove)
-			senders[senderkey] = weakSender
-		except:
-			pass
-		
-	receiverID = id(receiver)
-	# get current set, remove any current references to
-	# this receiver in the set, including back-references
-	if signals.has_key(signal):
-		receivers = signals[signal]
-		_removeOldBackRefs(senderkey, signal, receiver, receivers)
-	else:
-		receivers = signals[signal] = []
-	try:
-		current = sendersBack.get( receiverID )
-		if current is None:
-			sendersBack[ receiverID ] = current = []
-		if senderkey not in current:
-			current.append(senderkey)
-	except:
-		pass
+    returns None, may raise DispatcherTypeError
+    """
+    if signal is None:
+        raise errors.DispatcherTypeError(
+            'Signal cannot be None (receiver=%r sender=%r)'%( receiver,sender)
+        )
+    if weak:
+        receiver = saferef.safeRef(receiver, onDelete=_removeReceiver)
+    senderkey = id(sender)
+    if connections.has_key(senderkey):
+        signals = connections[senderkey]
+    else:
+        connections[senderkey] = signals = {}
+    # Keep track of senders for cleanup.
+    # Is Anonymous something we want to clean up?
+    if sender not in (None, Anonymous, Any):
+        def remove(object, senderkey=senderkey):
+            _removeSender(senderkey=senderkey)
+        # Skip objects that can not be weakly referenced, which means
+        # they won't be automatically cleaned up, but that's too bad.
+        try:
+            weakSender = weakref.ref(sender, remove)
+            senders[senderkey] = weakSender
+        except:
+            pass
+        
+    receiverID = id(receiver)
+    # get current set, remove any current references to
+    # this receiver in the set, including back-references
+    if signals.has_key(signal):
+        receivers = signals[signal]
+        _removeOldBackRefs(senderkey, signal, receiver, receivers)
+    else:
+        receivers = signals[signal] = []
+    try:
+        current = sendersBack.get( receiverID )
+        if current is None:
+            sendersBack[ receiverID ] = current = []
+        if senderkey not in current:
+            current.append(senderkey)
+    except:
+        pass
 
-	receivers.append(receiver)
+    receivers.append(receiver)
 
 
 
 def disconnect(receiver, signal=Any, sender=Any, weak=True):
-	"""Disconnect receiver from sender for signal
+    """Disconnect receiver from sender for signal
 
-	receiver -- the registered receiver to disconnect
-	signal -- the registered signal to disconnect
-	sender -- the registered sender to disconnect
-	weak -- the weakref state to disconnect
+    receiver -- the registered receiver to disconnect
+    signal -- the registered signal to disconnect
+    sender -- the registered sender to disconnect
+    weak -- the weakref state to disconnect
 
-	disconnect reverses the process of connect,
-	the semantics for the individual elements are
-	logically equivalent to a tuple of
-	(receiver, signal, sender, weak) used as a key
-	to be deleted from the internal routing tables.
-	(The actual process is slightly more complex
-	but the semantics are basically the same).
+    disconnect reverses the process of connect,
+    the semantics for the individual elements are
+    logically equivalent to a tuple of
+    (receiver, signal, sender, weak) used as a key
+    to be deleted from the internal routing tables.
+    (The actual process is slightly more complex
+    but the semantics are basically the same).
 
-	Note:
-		Using disconnect is not required to cleanup
-		routing when an object is deleted, the framework
-		will remove routes for deleted objects
-		automatically.  It's only necessary to disconnect
-		if you want to stop routing to a live object.
-		
-	returns None, may raise DispatcherTypeError or
-		DispatcherKeyError
-	"""
-	if signal is None:
-		raise errors.DispatcherTypeError(
-			'Signal cannot be None (receiver=%r sender=%r)'%( receiver,sender)
-		)
-	if weak: receiver = saferef.safeRef(receiver)
-	senderkey = id(sender)
-	try:
-		signals = connections[senderkey]
-		receivers = signals[signal]
-	except KeyError:
-		raise errors.DispatcherKeyError(
-			"""No receivers found for signal %r from sender %r""" %(
-				signal,
-				sender
-			)
-		)
-	try:
-		# also removes from receivers
-		_removeOldBackRefs(senderkey, signal, receiver, receivers)
-	except ValueError:
-		raise errors.DispatcherKeyError(
-			"""No connection to receiver %s for signal %s from sender %s""" %(
-				receiver,
-				signal,
-				sender
-			)
-		)
-	_cleanupConnections(senderkey, signal)
+    Note:
+        Using disconnect is not required to cleanup
+        routing when an object is deleted, the framework
+        will remove routes for deleted objects
+        automatically.  It's only necessary to disconnect
+        if you want to stop routing to a live object.
+        
+    returns None, may raise DispatcherTypeError or
+        DispatcherKeyError
+    """
+    if signal is None:
+        raise errors.DispatcherTypeError(
+            'Signal cannot be None (receiver=%r sender=%r)'%( receiver,sender)
+        )
+    if weak: receiver = saferef.safeRef(receiver)
+    senderkey = id(sender)
+    try:
+        signals = connections[senderkey]
+        receivers = signals[signal]
+    except KeyError:
+        raise errors.DispatcherKeyError(
+            """No receivers found for signal %r from sender %r""" %(
+                signal,
+                sender
+            )
+        )
+    try:
+        # also removes from receivers
+        _removeOldBackRefs(senderkey, signal, receiver, receivers)
+    except ValueError:
+        raise errors.DispatcherKeyError(
+            """No connection to receiver %s for signal %s from sender %s""" %(
+                receiver,
+                signal,
+                sender
+            )
+        )
+    _cleanupConnections(senderkey, signal)
 
 def getReceivers( sender = Any, signal = Any ):
-	"""Get list of receivers from global tables
+    """Get list of receivers from global tables
 
-	This utility function allows you to retrieve the
-	raw list of receivers from the connections table
-	for the given sender and signal pair.
+    This utility function allows you to retrieve the
+    raw list of receivers from the connections table
+    for the given sender and signal pair.
 
-	Note:
-		there is no guarantee that this is the actual list
-		stored in the connections table, so the value
-		should be treated as a simple iterable/truth value
-		rather than, for instance a list to which you
-		might append new records.
+    Note:
+        there is no guarantee that this is the actual list
+        stored in the connections table, so the value
+        should be treated as a simple iterable/truth value
+        rather than, for instance a list to which you
+        might append new records.
 
-	Normally you would use liveReceivers( getReceivers( ...))
-	to retrieve the actual receiver objects as an iterable
-	object.
-	"""
-	try:
-		return connections[id(sender)][signal]
-	except KeyError:
-		return []
+    Normally you would use liveReceivers( getReceivers( ...))
+    to retrieve the actual receiver objects as an iterable
+    object.
+    """
+    try:
+        return connections[id(sender)][signal]
+    except KeyError:
+        return []
 
 def liveReceivers(receivers):
-	"""Filter sequence of receivers to get resolved, live receivers
+    """Filter sequence of receivers to get resolved, live receivers
 
-	This is a generator which will iterate over
-	the passed sequence, checking for weak references
-	and resolving them, then returning all live
-	receivers.
-	"""
-	for receiver in receivers:
-		if isinstance( receiver, WEAKREF_TYPES):
-			# Dereference the weak reference.
-			receiver = receiver()
-			if receiver is not None:
-				yield receiver
-		else:
-			yield receiver
+    This is a generator which will iterate over
+    the passed sequence, checking for weak references
+    and resolving them, then returning all live
+    receivers.
+    """
+    for receiver in receivers:
+        if isinstance( receiver, WEAKREF_TYPES):
+            # Dereference the weak reference.
+            receiver = receiver()
+            if receiver is not None:
+                yield receiver
+        else:
+            yield receiver
 
 
 
 def getAllReceivers( sender = Any, signal = Any ):
-	"""Get list of all receivers from global tables
+    """Get list of all receivers from global tables
 
-	This gets all receivers which should receive
-	the given signal from sender, each receiver should
-	be produced only once by the resulting generator
-	"""
-	receivers = {}
-	for set in (
-		# Get receivers that receive *this* signal from *this* sender.
-		getReceivers( sender, signal ),
-		# Add receivers that receive *any* signal from *this* sender.
-		getReceivers( sender, Any ),
-		# Add receivers that receive *this* signal from *any* sender.
-		getReceivers( Any, signal ),
-		# Add receivers that receive *any* signal from *any* sender.
-		getReceivers( Any, Any ),
-	):
-		for receiver in set:
-			if receiver: # filter out dead instance-method weakrefs
-				try:
-					if not receivers.has_key( receiver ):
-						receivers[receiver] = 1
-						yield receiver
-				except TypeError:
-					# dead weakrefs raise TypeError on hash...
-					pass
+    This gets all receivers which should receive
+    the given signal from sender, each receiver should
+    be produced only once by the resulting generator
+    """
+    receivers = {}
+    for set in (
+        # Get receivers that receive *this* signal from *this* sender.
+        getReceivers( sender, signal ),
+        # Add receivers that receive *any* signal from *this* sender.
+        getReceivers( sender, Any ),
+        # Add receivers that receive *this* signal from *any* sender.
+        getReceivers( Any, signal ),
+        # Add receivers that receive *any* signal from *any* sender.
+        getReceivers( Any, Any ),
+    ):
+        for receiver in set:
+            if receiver: # filter out dead instance-method weakrefs
+                try:
+                    if not receivers.has_key( receiver ):
+                        receivers[receiver] = 1
+                        yield receiver
+                except TypeError:
+                    # dead weakrefs raise TypeError on hash...
+                    pass
 
 def send(signal=Any, sender=Anonymous, *arguments, **named):
-	"""Send signal from sender to all connected receivers.
-	
-	signal -- (hashable) signal value, see connect for details
+    """Send signal from sender to all connected receivers.
+    
+    signal -- (hashable) signal value, see connect for details
 
-	sender -- the sender of the signal
-	
-		if Any, only receivers registered for Any will receive
-		the message.
+    sender -- the sender of the signal
+    
+        if Any, only receivers registered for Any will receive
+        the message.
 
-		if Anonymous, only receivers registered to receive
-		messages from Anonymous or Any will receive the message
+        if Anonymous, only receivers registered to receive
+        messages from Anonymous or Any will receive the message
 
-		Otherwise can be any python object (normally one
-		registered with a connect if you actually want
-		something to occur).
+        Otherwise can be any python object (normally one
+        registered with a connect if you actually want
+        something to occur).
 
-	arguments -- positional arguments which will be passed to
-		*all* receivers. Note that this may raise TypeErrors
-		if the receivers do not allow the particular arguments.
-		Note also that arguments are applied before named
-		arguments, so they should be used with care.
+    arguments -- positional arguments which will be passed to
+        *all* receivers. Note that this may raise TypeErrors
+        if the receivers do not allow the particular arguments.
+        Note also that arguments are applied before named
+        arguments, so they should be used with care.
 
-	named -- named arguments which will be filtered according
-		to the parameters of the receivers to only provide those
-		acceptable to the receiver.
+    named -- named arguments which will be filtered according
+        to the parameters of the receivers to only provide those
+        acceptable to the receiver.
 
-	Return a list of tuple pairs [(receiver, response), ... ]
+    Return a list of tuple pairs [(receiver, response), ... ]
 
-	if any receiver raises an error, the error propagates back
-	through send, terminating the dispatch loop, so it is quite
-	possible to not have all receivers called if a raises an
-	error.
-	"""
-	# Call each receiver with whatever arguments it can accept.
-	# Return a list of tuple pairs [(receiver, response), ... ].
-	responses = []
-	for receiver in liveReceivers(getAllReceivers(sender, signal)):
-		response = robustapply.robustApply(
-			receiver,
-			signal=signal,
-			sender=sender,
-			*arguments,
-			**named
-		)
-		responses.append((receiver, response))
-	return responses
+    if any receiver raises an error, the error propagates back
+    through send, terminating the dispatch loop, so it is quite
+    possible to not have all receivers called if a raises an
+    error.
+    """
+    # Call each receiver with whatever arguments it can accept.
+    # Return a list of tuple pairs [(receiver, response), ... ].
+    responses = []
+    for receiver in liveReceivers(getAllReceivers(sender, signal)):
+        response = robustapply.robustApply(
+            receiver,
+            signal=signal,
+            sender=sender,
+            *arguments,
+            **named
+        )
+        responses.append((receiver, response))
+    return responses
 def sendExact( signal=Any, sender=Anonymous, *arguments, **named ):
-	"""Send signal only to those receivers registered for exact message
+    """Send signal only to those receivers registered for exact message
 
-	sendExact allows for avoiding Any/Anonymous registered
-	handlers, sending only to those receivers explicitly
-	registered for a particular signal on a particular
-	sender.
-	"""
-	responses = []
-	for receiver in liveReceivers(getReceivers(sender, signal)):
-		response = robustapply.robustApply(
-			receiver,
-			signal=signal,
-			sender=sender,
-			*arguments,
-			**named
-		)
-		responses.append((receiver, response))
-	return responses
-	
+    sendExact allows for avoiding Any/Anonymous registered
+    handlers, sending only to those receivers explicitly
+    registered for a particular signal on a particular
+    sender.
+    """
+    responses = []
+    for receiver in liveReceivers(getReceivers(sender, signal)):
+        response = robustapply.robustApply(
+            receiver,
+            signal=signal,
+            sender=sender,
+            *arguments,
+            **named
+        )
+        responses.append((receiver, response))
+    return responses
+    
 
 def _removeReceiver(receiver):
-	"""Remove receiver from connections."""
-	if not sendersBack:
-		# During module cleanup the mapping will be replaced with None
-		return False
-	backKey = id(receiver)
-	for senderkey in sendersBack.get(backKey,()):
-		try:
-			signals = connections[senderkey].keys()
-		except KeyError,err:
-			pass
-		else:
-			for signal in signals:
-				try:
-					receivers = connections[senderkey][signal]
-				except KeyError:
-					pass
-				else:
-					try:
-						receivers.remove( receiver )
-					except Exception, err:
-						pass
-				_cleanupConnections(senderkey, signal)
-	try:
-		del sendersBack[ backKey ]
-	except KeyError:
-		pass
-			
+    """Remove receiver from connections."""
+    if not sendersBack:
+        # During module cleanup the mapping will be replaced with None
+        return False
+    backKey = id(receiver)
+    for senderkey in sendersBack.get(backKey,()):
+        try:
+            signals = connections[senderkey].keys()
+        except KeyError,err:
+            pass
+        else:
+            for signal in signals:
+                try:
+                    receivers = connections[senderkey][signal]
+                except KeyError:
+                    pass
+                else:
+                    try:
+                        receivers.remove( receiver )
+                    except Exception, err:
+                        pass
+                _cleanupConnections(senderkey, signal)
+    try:
+        del sendersBack[ backKey ]
+    except KeyError:
+        pass
+            
 def _cleanupConnections(senderkey, signal):
-	"""Delete any empty signals for senderkey. Delete senderkey if empty."""
-	try:
-		receivers = connections[senderkey][signal]
-	except:
-		pass
-	else:
-		if not receivers:
-			# No more connected receivers. Therefore, remove the signal.
-			try:
-				signals = connections[senderkey]
-			except KeyError:
-				pass
-			else:
-				del signals[signal]
-				if not signals:
-					# No more signal connections. Therefore, remove the sender.
-					_removeSender(senderkey)
+    """Delete any empty signals for senderkey. Delete senderkey if empty."""
+    try:
+        receivers = connections[senderkey][signal]
+    except:
+        pass
+    else:
+        if not receivers:
+            # No more connected receivers. Therefore, remove the signal.
+            try:
+                signals = connections[senderkey]
+            except KeyError:
+                pass
+            else:
+                del signals[signal]
+                if not signals:
+                    # No more signal connections. Therefore, remove the sender.
+                    _removeSender(senderkey)
 
 def _removeSender(senderkey):
-	"""Remove senderkey from connections."""
-	_removeBackrefs(senderkey)
-	try:
-		del connections[senderkey]
-	except KeyError:
-		pass
-	# Senderkey will only be in senders dictionary if sender 
-	# could be weakly referenced.
-	try: 
-		del senders[senderkey]
-	except: 
-		pass
+    """Remove senderkey from connections."""
+    _removeBackrefs(senderkey)
+    try:
+        del connections[senderkey]
+    except KeyError:
+        pass
+    # Senderkey will only be in senders dictionary if sender 
+    # could be weakly referenced.
+    try: 
+        del senders[senderkey]
+    except: 
+        pass
 
 
 def _removeBackrefs( senderkey):
-	"""Remove all back-references to this senderkey"""
-	try:
-		signals = connections[senderkey]
-	except KeyError:
-		signals = None
-	else:
-		items = signals.items()
-		def allReceivers( ):
-			for signal,set in items:
-				for item in set:
-					yield item
-		for receiver in allReceivers():
-			_killBackref( receiver, senderkey )
+    """Remove all back-references to this senderkey"""
+    try:
+        signals = connections[senderkey]
+    except KeyError:
+        signals = None
+    else:
+        items = signals.items()
+        def allReceivers( ):
+            for signal,set in items:
+                for item in set:
+                    yield item
+        for receiver in allReceivers():
+            _killBackref( receiver, senderkey )
 
 def _removeOldBackRefs(senderkey, signal, receiver, receivers):
-	"""Kill old sendersBack references from receiver
+    """Kill old sendersBack references from receiver
 
-	This guards against multiple registration of the same
-	receiver for a given signal and sender leaking memory
-	as old back reference records build up.
+    This guards against multiple registration of the same
+    receiver for a given signal and sender leaking memory
+    as old back reference records build up.
 
-	Also removes old receiver instance from receivers
-	"""
-	try:
-		index = receivers.index(receiver)
-		# need to scan back references here and remove senderkey
-	except ValueError:
-		return False
-	else:
-		oldReceiver = receivers[index]
-		del receivers[index]
-		found = 0
-		signals = connections.get(signal)
-		if signals is not None:
-			for sig,recs in connections.get(signal,{}).iteritems():
-				if sig != signal:
-					for rec in recs:
-						if rec is oldReceiver:
-							found = 1
-							break
-		if not found:
-			_killBackref( oldReceiver, senderkey )
-			return True
-		return False
-		
-		
+    Also removes old receiver instance from receivers
+    """
+    try:
+        index = receivers.index(receiver)
+        # need to scan back references here and remove senderkey
+    except ValueError:
+        return False
+    else:
+        oldReceiver = receivers[index]
+        del receivers[index]
+        found = 0
+        signals = connections.get(signal)
+        if signals is not None:
+            for sig,recs in connections.get(signal,{}).iteritems():
+                if sig != signal:
+                    for rec in recs:
+                        if rec is oldReceiver:
+                            found = 1
+                            break
+        if not found:
+            _killBackref( oldReceiver, senderkey )
+            return True
+        return False
+        
+        
 def _killBackref( receiver, senderkey ):
-	"""Do the actual removal of back reference from receiver to senderkey"""
-	receiverkey = id(receiver)
-	set = sendersBack.get( receiverkey, () )
-	while senderkey in set:
-		try:
-			set.remove( senderkey )
-		except:
-			break
-	if not set:
-		try:
-			del sendersBack[ receiverkey ]
-		except KeyError:
-			pass
-	return True
+    """Do the actual removal of back reference from receiver to senderkey"""
+    receiverkey = id(receiver)
+    set = sendersBack.get( receiverkey, () )
+    while senderkey in set:
+        try:
+            set.remove( senderkey )
+        except:
+            break
+    if not set:
+        try:
+            del sendersBack[ receiverkey ]
+        except KeyError:
+            pass
+    return True
diff --git a/django/dispatch/errors.py b/django/dispatch/errors.py
index a2eb32ed75b..a4c924dbe91 100644
--- a/django/dispatch/errors.py
+++ b/django/dispatch/errors.py
@@ -2,9 +2,9 @@
 """
 
 class DispatcherError(Exception):
-	"""Base class for all Dispatcher errors"""
+    """Base class for all Dispatcher errors"""
 class DispatcherKeyError(KeyError, DispatcherError):
-	"""Error raised when unknown (sender,signal) set specified"""
+    """Error raised when unknown (sender,signal) set specified"""
 class DispatcherTypeError(TypeError, DispatcherError):
-	"""Error raised when inappropriate signal-type specified (None)"""
+    """Error raised when inappropriate signal-type specified (None)"""
 
diff --git a/django/dispatch/license.txt b/django/dispatch/license.txt
index 2f0b6b5ef21..8ff5d286139 100644
--- a/django/dispatch/license.txt
+++ b/django/dispatch/license.txt
@@ -1,34 +1,34 @@
 PyDispatcher License
 
-	Copyright (c) 2001-2003, Patrick K. O'Brien and Contributors
-	All rights reserved.
-	
-	Redistribution and use in source and binary forms, with or without
-	modification, are permitted provided that the following conditions
-	are met:
-	
-		Redistributions of source code must retain the above copyright
-		notice, this list of conditions and the following disclaimer.
-	
-		Redistributions in binary form must reproduce the above
-		copyright notice, this list of conditions and the following
-		disclaimer in the documentation and/or other materials
-		provided with the distribution.
-	
-		The name of Patrick K. O'Brien, or the name of any Contributor,
-		may not be used to endorse or promote products derived from this 
-		software without specific prior written permission.
-	
-	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-	``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-	FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-	COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
-	INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-	SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-	HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-	STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
-	OF THE POSSIBILITY OF SUCH DAMAGE. 
+    Copyright (c) 2001-2003, Patrick K. O'Brien and Contributors
+    All rights reserved.
+    
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    
+        Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+    
+        Redistributions in binary form must reproduce the above
+        copyright notice, this list of conditions and the following
+        disclaimer in the documentation and/or other materials
+        provided with the distribution.
+    
+        The name of Patrick K. O'Brien, or the name of any Contributor,
+        may not be used to endorse or promote products derived from this 
+        software without specific prior written permission.
+    
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+    COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+    OF THE POSSIBILITY OF SUCH DAMAGE. 
 
diff --git a/django/dispatch/robust.py b/django/dispatch/robust.py
index ba19934d43e..8b1590de353 100644
--- a/django/dispatch/robust.py
+++ b/django/dispatch/robust.py
@@ -3,55 +3,55 @@ from django.dispatch.dispatcher import Any, Anonymous, liveReceivers, getAllRece
 from django.dispatch.robustapply import robustApply
 
 def sendRobust(
-	signal=Any, 
-	sender=Anonymous, 
-	*arguments, **named
+    signal=Any, 
+    sender=Anonymous, 
+    *arguments, **named
 ):
-	"""Send signal from sender to all connected receivers catching errors
-	
-	signal -- (hashable) signal value, see connect for details
+    """Send signal from sender to all connected receivers catching errors
+    
+    signal -- (hashable) signal value, see connect for details
 
-	sender -- the sender of the signal
-	
-		if Any, only receivers registered for Any will receive
-		the message.
+    sender -- the sender of the signal
+    
+        if Any, only receivers registered for Any will receive
+        the message.
 
-		if Anonymous, only receivers registered to receive
-		messages from Anonymous or Any will receive the message
+        if Anonymous, only receivers registered to receive
+        messages from Anonymous or Any will receive the message
 
-		Otherwise can be any python object (normally one
-		registered with a connect if you actually want
-		something to occur).
+        Otherwise can be any python object (normally one
+        registered with a connect if you actually want
+        something to occur).
 
-	arguments -- positional arguments which will be passed to
-		*all* receivers. Note that this may raise TypeErrors
-		if the receivers do not allow the particular arguments.
-		Note also that arguments are applied before named
-		arguments, so they should be used with care.
+    arguments -- positional arguments which will be passed to
+        *all* receivers. Note that this may raise TypeErrors
+        if the receivers do not allow the particular arguments.
+        Note also that arguments are applied before named
+        arguments, so they should be used with care.
 
-	named -- named arguments which will be filtered according
-		to the parameters of the receivers to only provide those
-		acceptable to the receiver.
+    named -- named arguments which will be filtered according
+        to the parameters of the receivers to only provide those
+        acceptable to the receiver.
 
-	Return a list of tuple pairs [(receiver, response), ... ]
+    Return a list of tuple pairs [(receiver, response), ... ]
 
-	if any receiver raises an error (specifically any subclass of Exception),
-	the error instance is returned as the result for that receiver.
-	"""
-	# Call each receiver with whatever arguments it can accept.
-	# Return a list of tuple pairs [(receiver, response), ... ].
-	responses = []
-	for receiver in liveReceivers(getAllReceivers(sender, signal)):
-		try:
-			response = robustApply(
-				receiver,
-				signal=signal,
-				sender=sender,
-				*arguments,
-				**named
-			)
-		except Exception, err:
-			responses.append((receiver, err))
-		else:
-			responses.append((receiver, response))
-	return responses
+    if any receiver raises an error (specifically any subclass of Exception),
+    the error instance is returned as the result for that receiver.
+    """
+    # Call each receiver with whatever arguments it can accept.
+    # Return a list of tuple pairs [(receiver, response), ... ].
+    responses = []
+    for receiver in liveReceivers(getAllReceivers(sender, signal)):
+        try:
+            response = robustApply(
+                receiver,
+                signal=signal,
+                sender=sender,
+                *arguments,
+                **named
+            )
+        except Exception, err:
+            responses.append((receiver, err))
+        else:
+            responses.append((receiver, response))
+    return responses
diff --git a/django/dispatch/robustapply.py b/django/dispatch/robustapply.py
index 0350e60cfc3..14ba2b51acc 100644
--- a/django/dispatch/robustapply.py
+++ b/django/dispatch/robustapply.py
@@ -7,43 +7,41 @@ those which are acceptable.
 """
 
 def function( receiver ):
-	"""Get function-like callable object for given receiver
+    """Get function-like callable object for given receiver
 
-	returns (function_or_method, codeObject, fromMethod)
+    returns (function_or_method, codeObject, fromMethod)
 
-	If fromMethod is true, then the callable already
-	has its first argument bound
-	"""
-	if hasattr(receiver, '__call__'):
-		# receiver is a class instance; assume it is callable.
-		# Reassign receiver to the actual method that will be called.
-		if hasattr( receiver.__call__, 'im_func') or hasattr( receiver.__call__, 'im_code'):
-			receiver = receiver.__call__
-	if hasattr( receiver, 'im_func' ):
-		# an instance-method...
-		return receiver, receiver.im_func.func_code, 1
-	elif not hasattr( receiver, 'func_code'):
-		raise ValueError('unknown reciever type %s %s'%(receiver, type(receiver)))
-	return receiver, receiver.func_code, 0
+    If fromMethod is true, then the callable already
+    has its first argument bound
+    """
+    if hasattr(receiver, '__call__'):
+        # receiver is a class instance; assume it is callable.
+        # Reassign receiver to the actual method that will be called.
+        if hasattr( receiver.__call__, 'im_func') or hasattr( receiver.__call__, 'im_code'):
+            receiver = receiver.__call__
+    if hasattr( receiver, 'im_func' ):
+        # an instance-method...
+        return receiver, receiver.im_func.func_code, 1
+    elif not hasattr( receiver, 'func_code'):
+        raise ValueError('unknown reciever type %s %s'%(receiver, type(receiver)))
+    return receiver, receiver.func_code, 0
 
 def robustApply(receiver, *arguments, **named):
-	"""Call receiver with arguments and an appropriate subset of named
-	"""
-	receiver, codeObject, startIndex = function( receiver )
-	acceptable = codeObject.co_varnames[startIndex+len(arguments):codeObject.co_argcount]
-	for name in codeObject.co_varnames[startIndex:startIndex+len(arguments)]:
-		if named.has_key( name ):
-			raise TypeError(
-				"""Argument %r specified both positionally and as a keyword for calling %r"""% (
-					name, receiver,
-				)
-			)
-	if not (codeObject.co_flags & 8):
-		# fc does not have a **kwds type parameter, therefore 
-		# remove unacceptable arguments.
-		for arg in named.keys():
-			if arg not in acceptable:
-				del named[arg]
-	return receiver(*arguments, **named)
-
-			
\ No newline at end of file
+    """Call receiver with arguments and an appropriate subset of named
+    """
+    receiver, codeObject, startIndex = function( receiver )
+    acceptable = codeObject.co_varnames[startIndex+len(arguments):codeObject.co_argcount]
+    for name in codeObject.co_varnames[startIndex:startIndex+len(arguments)]:
+        if named.has_key( name ):
+            raise TypeError(
+                """Argument %r specified both positionally and as a keyword for calling %r"""% (
+                    name, receiver,
+                )
+            )
+    if not (codeObject.co_flags & 8):
+        # fc does not have a **kwds type parameter, therefore 
+        # remove unacceptable arguments.
+        for arg in named.keys():
+            if arg not in acceptable:
+                del named[arg]
+    return receiver(*arguments, **named)
diff --git a/django/dispatch/saferef.py b/django/dispatch/saferef.py
index 6b3eda1d383..74b7a419425 100644
--- a/django/dispatch/saferef.py
+++ b/django/dispatch/saferef.py
@@ -2,164 +2,164 @@
 import weakref, traceback
 
 def safeRef(target, onDelete = None):
-	"""Return a *safe* weak reference to a callable target
+    """Return a *safe* weak reference to a callable target
 
-	target -- the object to be weakly referenced, if it's a
-		bound method reference, will create a BoundMethodWeakref,
-		otherwise creates a simple weakref.
-	onDelete -- if provided, will have a hard reference stored
-		to the callable to be called after the safe reference
-		goes out of scope with the reference object, (either a
-		weakref or a BoundMethodWeakref) as argument.
-	"""
-	if hasattr(target, 'im_self'):
-		if target.im_self is not None:
-			# Turn a bound method into a BoundMethodWeakref instance.
-			# Keep track of these instances for lookup by disconnect().
-			assert hasattr(target, 'im_func'), """safeRef target %r has im_self, but no im_func, don't know how to create reference"""%( target,)
-			reference = BoundMethodWeakref(
-				target=target,
-				onDelete=onDelete
-			)
-			return reference
-	if callable(onDelete):
-		return weakref.ref(target, onDelete)
-	else:
-		return weakref.ref( target )
+    target -- the object to be weakly referenced, if it's a
+        bound method reference, will create a BoundMethodWeakref,
+        otherwise creates a simple weakref.
+    onDelete -- if provided, will have a hard reference stored
+        to the callable to be called after the safe reference
+        goes out of scope with the reference object, (either a
+        weakref or a BoundMethodWeakref) as argument.
+    """
+    if hasattr(target, 'im_self'):
+        if target.im_self is not None:
+            # Turn a bound method into a BoundMethodWeakref instance.
+            # Keep track of these instances for lookup by disconnect().
+            assert hasattr(target, 'im_func'), """safeRef target %r has im_self, but no im_func, don't know how to create reference"""%( target,)
+            reference = BoundMethodWeakref(
+                target=target,
+                onDelete=onDelete
+            )
+            return reference
+    if callable(onDelete):
+        return weakref.ref(target, onDelete)
+    else:
+        return weakref.ref( target )
 
 class BoundMethodWeakref(object):
-	"""'Safe' and reusable weak references to instance methods
+    """'Safe' and reusable weak references to instance methods
 
-	BoundMethodWeakref objects provide a mechanism for
-	referencing a bound method without requiring that the
-	method object itself (which is normally a transient
-	object) is kept alive.  Instead, the BoundMethodWeakref
-	object keeps weak references to both the object and the
-	function which together define the instance method.
+    BoundMethodWeakref objects provide a mechanism for
+    referencing a bound method without requiring that the
+    method object itself (which is normally a transient
+    object) is kept alive.  Instead, the BoundMethodWeakref
+    object keeps weak references to both the object and the
+    function which together define the instance method.
 
-	Attributes:
-		key -- the identity key for the reference, calculated
-			by the class's calculateKey method applied to the
-			target instance method
-		deletionMethods -- sequence of callable objects taking
-			single argument, a reference to this object which
-			will be called when *either* the target object or
-			target function is garbage collected (i.e. when
-			this object becomes invalid).  These are specified
-			as the onDelete parameters of safeRef calls.
-		weakSelf -- weak reference to the target object
-		weakFunc -- weak reference to the target function
+    Attributes:
+        key -- the identity key for the reference, calculated
+            by the class's calculateKey method applied to the
+            target instance method
+        deletionMethods -- sequence of callable objects taking
+            single argument, a reference to this object which
+            will be called when *either* the target object or
+            target function is garbage collected (i.e. when
+            this object becomes invalid).  These are specified
+            as the onDelete parameters of safeRef calls.
+        weakSelf -- weak reference to the target object
+        weakFunc -- weak reference to the target function
 
-	Class Attributes:
-		_allInstances -- class attribute pointing to all live
-			BoundMethodWeakref objects indexed by the class's
-			calculateKey(target) method applied to the target
-			objects.  This weak value dictionary is used to
-			short-circuit creation so that multiple references
-			to the same (object, function) pair produce the
-			same BoundMethodWeakref instance.
+    Class Attributes:
+        _allInstances -- class attribute pointing to all live
+            BoundMethodWeakref objects indexed by the class's
+            calculateKey(target) method applied to the target
+            objects.  This weak value dictionary is used to
+            short-circuit creation so that multiple references
+            to the same (object, function) pair produce the
+            same BoundMethodWeakref instance.
 
-	"""
-	_allInstances = weakref.WeakValueDictionary()
-	def __new__( cls, target, onDelete=None, *arguments,**named ):
-		"""Create new instance or return current instance
+    """
+    _allInstances = weakref.WeakValueDictionary()
+    def __new__( cls, target, onDelete=None, *arguments,**named ):
+        """Create new instance or return current instance
 
-		Basically this method of construction allows us to
-		short-circuit creation of references to already-
-		referenced instance methods.  The key corresponding
-		to the target is calculated, and if there is already
-		an existing reference, that is returned, with its
-		deletionMethods attribute updated.  Otherwise the
-		new instance is created and registered in the table
-		of already-referenced methods.
-		"""
-		key = cls.calculateKey(target)
-		current =cls._allInstances.get(key)
-		if current is not None:
-			current.deletionMethods.append( onDelete)
-			return current
-		else:
-			base = super( BoundMethodWeakref, cls).__new__( cls )
-			cls._allInstances[key] = base
-			base.__init__( target, onDelete, *arguments,**named)
-			return base
-	def __init__(self, target, onDelete=None):
-		"""Return a weak-reference-like instance for a bound method
+        Basically this method of construction allows us to
+        short-circuit creation of references to already-
+        referenced instance methods.  The key corresponding
+        to the target is calculated, and if there is already
+        an existing reference, that is returned, with its
+        deletionMethods attribute updated.  Otherwise the
+        new instance is created and registered in the table
+        of already-referenced methods.
+        """
+        key = cls.calculateKey(target)
+        current =cls._allInstances.get(key)
+        if current is not None:
+            current.deletionMethods.append( onDelete)
+            return current
+        else:
+            base = super( BoundMethodWeakref, cls).__new__( cls )
+            cls._allInstances[key] = base
+            base.__init__( target, onDelete, *arguments,**named)
+            return base
+    def __init__(self, target, onDelete=None):
+        """Return a weak-reference-like instance for a bound method
 
-		target -- the instance-method target for the weak
-			reference, must have im_self and im_func attributes
-			and be reconstructable via:
-				target.im_func.__get__( target.im_self )
-			which is true of built-in instance methods.
-		onDelete -- optional callback which will be called
-			when this weak reference ceases to be valid
-			(i.e. either the object or the function is garbage
-			collected).  Should take a single argument,
-			which will be passed a pointer to this object.
-		"""
-		def remove(weak, self=self):
-			"""Set self.isDead to true when method or instance is destroyed"""
-			methods = self.deletionMethods[:]
-			del self.deletionMethods[:]
-			try:
-				del self.__class__._allInstances[ self.key ]
-			except KeyError:
-				pass
-			for function in methods:
-				try:
-					if callable( function ):
-						function( self )
-				except Exception, e:
-					try:
-						traceback.print_exc()
-					except AttributeError, err:
-						print '''Exception during saferef %s cleanup function %s: %s'''%(
-							self, function, e
-						)
-		self.deletionMethods = [onDelete]
-		self.key = self.calculateKey( target )
-		self.weakSelf = weakref.ref(target.im_self, remove)
-		self.weakFunc = weakref.ref(target.im_func, remove)
-		self.selfName = str(target.im_self)
-		self.funcName = str(target.im_func.__name__)
-	def calculateKey( cls, target ):
-		"""Calculate the reference key for this reference
+        target -- the instance-method target for the weak
+            reference, must have im_self and im_func attributes
+            and be reconstructable via:
+                target.im_func.__get__( target.im_self )
+            which is true of built-in instance methods.
+        onDelete -- optional callback which will be called
+            when this weak reference ceases to be valid
+            (i.e. either the object or the function is garbage
+            collected).  Should take a single argument,
+            which will be passed a pointer to this object.
+        """
+        def remove(weak, self=self):
+            """Set self.isDead to true when method or instance is destroyed"""
+            methods = self.deletionMethods[:]
+            del self.deletionMethods[:]
+            try:
+                del self.__class__._allInstances[ self.key ]
+            except KeyError:
+                pass
+            for function in methods:
+                try:
+                    if callable( function ):
+                        function( self )
+                except Exception, e:
+                    try:
+                        traceback.print_exc()
+                    except AttributeError, err:
+                        print '''Exception during saferef %s cleanup function %s: %s'''%(
+                            self, function, e
+                        )
+        self.deletionMethods = [onDelete]
+        self.key = self.calculateKey( target )
+        self.weakSelf = weakref.ref(target.im_self, remove)
+        self.weakFunc = weakref.ref(target.im_func, remove)
+        self.selfName = str(target.im_self)
+        self.funcName = str(target.im_func.__name__)
+    def calculateKey( cls, target ):
+        """Calculate the reference key for this reference
 
-		Currently this is a two-tuple of the id()'s of the
-		target object and the target function respectively.
-		"""
-		return (id(target.im_self),id(target.im_func))
-	calculateKey = classmethod( calculateKey )
-	def __str__(self):
-		"""Give a friendly representation of the object"""
-		return """%s( %s.%s )"""%(
-			self.__class__.__name__,
-			self.selfName,
-			self.funcName,
-		)
-	__repr__ = __str__
-	def __nonzero__( self ):
-		"""Whether we are still a valid reference"""
-		return self() is not None
-	def __cmp__( self, other ):
-		"""Compare with another reference"""
-		if not isinstance (other,self.__class__):
-			return cmp( self.__class__, type(other) )
-		return cmp( self.key, other.key)
-	def __call__(self):
-		"""Return a strong reference to the bound method
+        Currently this is a two-tuple of the id()'s of the
+        target object and the target function respectively.
+        """
+        return (id(target.im_self),id(target.im_func))
+    calculateKey = classmethod( calculateKey )
+    def __str__(self):
+        """Give a friendly representation of the object"""
+        return """%s( %s.%s )"""%(
+            self.__class__.__name__,
+            self.selfName,
+            self.funcName,
+        )
+    __repr__ = __str__
+    def __nonzero__( self ):
+        """Whether we are still a valid reference"""
+        return self() is not None
+    def __cmp__( self, other ):
+        """Compare with another reference"""
+        if not isinstance (other,self.__class__):
+            return cmp( self.__class__, type(other) )
+        return cmp( self.key, other.key)
+    def __call__(self):
+        """Return a strong reference to the bound method
 
-		If the target cannot be retrieved, then will
-		return None, otherwise returns a bound instance
-		method for our object and function.
+        If the target cannot be retrieved, then will
+        return None, otherwise returns a bound instance
+        method for our object and function.
 
-		Note:
-			You may call this method any number of times,
-			as it does not invalidate the reference.
-		"""
-		target = self.weakSelf()
-		if target is not None:
-			function = self.weakFunc()
-			if function is not None:
-				return function.__get__(target)
-		return None
+        Note:
+            You may call this method any number of times,
+            as it does not invalidate the reference.
+        """
+        target = self.weakSelf()
+        if target is not None:
+            function = self.weakFunc()
+            if function is not None:
+                return function.__get__(target)
+        return None
diff --git a/django/template/defaultfilters.py b/django/template/defaultfilters.py
index bd9f55b1e90..c75f371ec81 100644
--- a/django/template/defaultfilters.py
+++ b/django/template/defaultfilters.py
@@ -438,7 +438,7 @@ def pluralize(value, arg='s'):
     the comma is used for the singular case.
     """
     if not ',' in arg: 
-	    arg = ',' + arg
+        arg = ',' + arg
     bits = arg.split(',')
     if len(bits) > 2:
         return ''
diff --git a/docs/admin_css.txt b/docs/admin_css.txt
index 069012a84ba..ec402f71427 100644
--- a/docs/admin_css.txt
+++ b/docs/admin_css.txt
@@ -118,8 +118,8 @@ additional class on the ``a`` for that tool. These are ``.addlink`` and
 Example from a changelist page::
 
     <ul class="object-tools">
-	  <li><a href="/stories/add/" class="addlink">Add redirect</a></li>
-	 </ul>
+      <li><a href="/stories/add/" class="addlink">Add redirect</a></li>
+    </ul>
 
 .. image:: http://media.djangoproject.com/img/doc/admincss/objecttools_01.gif
    :alt: Object tools on a changelist page