diff --git a/mercurial/hgweb/hgweb_mod.py b/mercurial/hgweb/hgweb_mod.py
--- a/mercurial/hgweb/hgweb_mod.py
+++ b/mercurial/hgweb/hgweb_mod.py
@@ -726,37 +726,21 @@ class hgweb(object):
         def rewrite_request(req):
             '''translate new web interface to traditional format'''
 
-            def spliturl(req):
-                def firstitem(query):
-                    return query.split('&', 1)[0].split(';', 1)[0]
-
-                def normurl(url):
-                    inner = '/'.join([x for x in url.split('/') if x])
-                    tl = len(url) > 1 and url.endswith('/') and '/' or ''
-
-                    return '%s%s%s' % (url.startswith('/') and '/' or '',
-                                       inner, tl)
-
-                root = normurl(urllib.unquote(req.env.get('REQUEST_URI', '').split('?', 1)[0]))
-                pi = normurl(req.env.get('PATH_INFO', ''))
-                if pi:
-                    # strip leading /
-                    pi = pi[1:]
-                    if pi:
-                        root = root[:root.rfind(pi)]
-                    if req.env.has_key('REPO_NAME'):
-                        rn = req.env['REPO_NAME'] + '/'
-                        root += rn
-                        query = pi[len(rn):]
-                    else:
-                        query = pi
-                else:
-                    root += '?'
-                    query = firstitem(req.env['QUERY_STRING'])
-
-                return (root, query)
-
-            req.url, query = spliturl(req)
+            req.url = req.env['SCRIPT_NAME']
+            if not req.url.endswith('/'):
+                req.url += '/'
+            if req.env.has_key('REPO_NAME'):
+                req.url += req.env['REPO_NAME'] + '/'
+            
+            if req.env.get('PATH_INFO'):
+                parts = req.env.get('PATH_INFO').strip('/').split('/')
+                repo_parts = req.env.get('REPO_NAME', '').split('/')
+                if parts[:len(repo_parts)] == repo_parts:
+                    parts = parts[len(repo_parts):]
+                query = '/'.join(parts)
+            else:
+                query = req.env['QUERY_STRING'].split('&', 1)[0]
+                query = query.split(';', 1)[0]
 
             if req.form.has_key('cmd'):
                 # old style
diff --git a/mercurial/hgweb/hgwebdir_mod.py b/mercurial/hgweb/hgwebdir_mod.py
--- a/mercurial/hgweb/hgwebdir_mod.py
+++ b/mercurial/hgweb/hgwebdir_mod.py
@@ -91,15 +91,11 @@ class hgwebdir(object):
         def config(section, name, default=None, untrusted=True):
             return parentui.config(section, name, default, untrusted)
 
-        url = req.env['REQUEST_URI'].split('?')[0]
+        url = req.env.get('SCRIPT_NAME', '')
         if not url.endswith('/'):
             url += '/'
-        pathinfo = req.env.get('PATH_INFO', '').strip('/') + '/'
-        base = url[:len(url) - len(pathinfo)]
-        if not base.endswith('/'):
-            base += '/'
 
-        staticurl = config('web', 'staticurl') or base + 'static/'
+        staticurl = config('web', 'staticurl') or url + 'static/'
         if not staticurl.endswith('/'):
             staticurl += '/'
 
@@ -158,8 +154,10 @@ class hgwebdir(object):
                 if u.configbool("web", "hidden", untrusted=True):
                     continue
 
-                url = ('/'.join([req.env["REQUEST_URI"].split('?')[0], name])
-                       .replace("//", "/")) + '/'
+                parts = [req.env['PATH_INFO'], name]
+                if req.env['SCRIPT_NAME']:
+                	parts.insert(0, req.env['SCRIPT_NAME'])
+                url = ('/'.join(parts).replace("//", "/")) + '/'
 
                 # update time with local timezone
                 try:
diff --git a/mercurial/hgweb/server.py b/mercurial/hgweb/server.py
--- a/mercurial/hgweb/server.py
+++ b/mercurial/hgweb/server.py
@@ -84,6 +84,7 @@ class _hgwebhandler(object, BaseHTTPServ
         env['SERVER_NAME'] = self.server.server_name
         env['SERVER_PORT'] = str(self.server.server_port)
         env['REQUEST_URI'] = self.path
+        env['SCRIPT_NAME'] = ''
         env['PATH_INFO'] = path_info
         env['REMOTE_HOST'] = self.client_address[0]
         env['REMOTE_ADDR'] = self.client_address[0]
diff --git a/mercurial/hgweb/wsgicgi.py b/mercurial/hgweb/wsgicgi.py
--- a/mercurial/hgweb/wsgicgi.py
+++ b/mercurial/hgweb/wsgicgi.py
@@ -16,6 +16,9 @@ def launch(application):
     util.set_binary(sys.stdout)
 
     environ = dict(os.environ.items())
+    if 'PATH_INFO' not in environ:
+    	environ['PATH_INFO'] = ''
+
     environ['wsgi.input'] = sys.stdin
     environ['wsgi.errors'] = sys.stderr
     environ['wsgi.version'] = (1, 0)
diff --git a/tests/test-hgweb-no-request-uri b/tests/test-hgweb-no-request-uri
new file mode 100755
--- /dev/null
+++ b/tests/test-hgweb-no-request-uri
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+mkdir repo
+cd repo
+hg init
+echo foo > bar
+hg add bar
+hg commit -m "test" -d "0 0" -u "Testing"
+hg tip
+
+cat > request.py <<EOF
+from mercurial.hgweb import hgweb, hgwebdir
+from StringIO import StringIO
+import os, sys
+
+errors = StringIO()
+input = StringIO()
+
+def startrsp(headers, data):
+	print '---- HEADERS'
+	print headers
+	print '---- DATA'
+	print data
+	return output.write
+
+env = {
+	'wsgi.version': (1, 0),
+	'wsgi.url_scheme': 'http',
+	'wsgi.errors': errors,
+	'wsgi.input': input,
+	'wsgi.multithread': False,
+	'wsgi.multiprocess': False,
+	'wsgi.run_once': False,
+	'REQUEST_METHOD': 'GET',
+	'SCRIPT_NAME': '',
+	'SERVER_NAME': '127.0.0.1',
+	'SERVER_PORT': os.environ['HGPORT'],
+	'SERVER_PROTOCOL': 'HTTP/1.0'
+}
+
+output = StringIO()
+env['PATH_INFO'] = '/'
+env['QUERY_STRING'] = 'style=atom'
+hgweb('.', name = 'repo')(env, startrsp)
+print output.getvalue()
+print '---- ERRORS'
+print errors.getvalue()
+
+output = StringIO()
+env['PATH_INFO'] = '/file/tip/'
+env['QUERY_STRING'] = 'style=raw'
+hgweb('.', name = 'repo')(env, startrsp)
+print output.getvalue()
+print '---- ERRORS'
+print errors.getvalue()
+
+output = StringIO()
+env['PATH_INFO'] = '/'
+env['QUERY_STRING'] = 'style=raw'
+hgwebdir({'repo': '.'})(env, startrsp)
+print output.getvalue()
+print '---- ERRORS'
+print errors.getvalue()
+
+output = StringIO()
+env['PATH_INFO'] = '/repo/file/tip/'
+env['QUERY_STRING'] = 'style=raw'
+hgwebdir({'repo': '.'})(env, startrsp)
+print output.getvalue()
+print '---- ERRORS'
+print errors.getvalue()
+EOF
+
+python request.py | sed "s/http:\/\/127\.0\.0\.1:[0-9]*\//http:\/\/127.0.0.1\//"
diff --git a/tests/test-hgweb-no-request-uri.out b/tests/test-hgweb-no-request-uri.out
new file mode 100644
--- /dev/null
+++ b/tests/test-hgweb-no-request-uri.out
@@ -0,0 +1,72 @@
+changeset:   0:4cbec7e6f8c4
+tag:         tip
+user:        Testing
+date:        Thu Jan 01 00:00:00 1970 +0000
+summary:     test
+
+---- HEADERS
+200 Script output follows
+---- DATA
+[('content-type', 'application/atom+xml; charset=ascii')]
+<?xml version="1.0" encoding="ascii"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+ <!-- Changelog -->
+ <id>http://127.0.0.1/</id>
+ <link rel="self" href="http://127.0.0.1/atom-log"/>
+ <link rel="alternate" href="http://127.0.0.1/"/>
+ <title>repo Changelog</title>
+ <updated>1970-01-01T00:00:00+00:00</updated>
+
+ <entry>
+  <title>test</title>
+  <id>http://www.selenic.com/mercurial/#changeset-4cbec7e6f8c42eb52b6b52670e1f7560ae9a101e</id>
+  <link href="http://127.0.0.1/rev/4cbec7e6f8c42eb52b6b52670e1f7560ae9a101e"/>
+  <author>
+   <name>Testing</name>
+   <email>&#84;&#101;&#115;&#116;&#105;&#110;&#103;</email>
+  </author>
+  <updated>1970-01-01T00:00:00+00:00</updated>
+  <published>1970-01-01T00:00:00+00:00</published>
+  <content type="xhtml">
+   <div xmlns="http://www.w3.org/1999/xhtml">
+    <pre xml:space="preserve">test</pre>
+   </div>
+  </content>
+ </entry>
+
+</feed>
+
+---- ERRORS
+
+---- HEADERS
+200 Script output follows
+---- DATA
+[('content-type', 'text/plain; charset=ascii')]
+
+-rw-r--r-- 4 bar
+
+
+
+---- ERRORS
+
+---- HEADERS
+200 Script output follows
+---- DATA
+[('content-type', 'text/plain; charset=ascii')]
+
+/repo/
+
+
+---- ERRORS
+
+---- HEADERS
+200 Script output follows
+---- DATA
+[('content-type', 'text/plain; charset=ascii')]
+
+-rw-r--r-- 4 bar
+
+
+
+---- ERRORS
+