diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -677,9 +677,26 @@ class dirstate(object):
         # step 3: report unseen items in the dmap hash
         if not skipstep3 and not exact:
             visit = sorted([f for f in dmap if f not in results and matchfn(f)])
-            nf = iter(visit).next
-            for st in util.statfiles([join(i) for i in visit]):
-                results[nf()] = st
+            if unknown:
+                # unknown == True means we walked the full directory tree above.
+                # So if a file is not seen it was either a) not matching matchfn
+                # b) ignored, c) missing, or d) under a symlink directory.
+                audit_path = scmutil.pathauditor(self._root)
+
+                for nf in iter(visit):
+                    # Report ignored items in the dmap as long as they are not
+                    # under a symlink directory.
+                    if ignore(nf) and audit_path.check(nf):
+                        results[nf] = util.statfiles([join(nf)])[0]
+                    else:
+                        # It's either missing or under a symlink directory
+                        results[nf] = None
+            else:
+                # We may not have walked the full directory tree above,
+                # so stat everything we missed.
+                nf = iter(visit).next
+                for st in util.statfiles([join(i) for i in visit]):
+                    results[nf()] = st
         for s in subrepos:
             del results[s]
         del results['.hg']
diff --git a/mercurial/extensions.py b/mercurial/extensions.py
--- a/mercurial/extensions.py
+++ b/mercurial/extensions.py
@@ -11,7 +11,7 @@ from i18n import _, gettext
 
 _extensions = {}
 _order = []
-_ignore = ['hbisect', 'bookmarks', 'parentrevspec']
+_ignore = ['hbisect', 'bookmarks', 'parentrevspec', 'interhg']
 
 def extensions():
     for name in _order:
diff --git a/mercurial/help/config.txt b/mercurial/help/config.txt
--- a/mercurial/help/config.txt
+++ b/mercurial/help/config.txt
@@ -1463,6 +1463,39 @@ The full set of options is:
 ``templates``
     Where to find the HTML templates. Default is install path.
 
+``websub``
+----------
+
+Web substitution filter definition. You can use this section to
+define a set of regular expression substitution patterns which
+let you automatically modify the hgweb server output.
+
+The default hgweb templates only apply these substitution patterns
+on the revision description fields. You can apply them anywhere
+you want when you create your own templates by adding calls to the
+"websub" filter (usually after calling the "escape" filter).
+
+This can be used, for example, to convert issue references to links
+to your issue tracker, or to convert "markdown-like" syntax into
+HTML (see the examples below).
+
+Each entry in this section names a substitution filter.
+The value of each entry defines the substitution expression itself.
+The websub expressions follow the old interhg extension syntax,
+which in turn imitates the Unix sed replacement syntax::
+
+    pattername = s/SEARCH_REGEX/REPLACE_EXPRESSION/[i]
+
+You can use any separator other than "/". The final "i" is optional
+and indicates that the search must be case insensitive.
+
+Examples::
+
+    [websub]
+    issues = s|issue(\d+)|<a href="http://bts.example.org/issue\1">issue\1</a>|i
+    italic = s/\b_(\S+)_\b/<i>\1<\/i>/
+    bold = s/\*\b(\S+)\b\*/<b>\1<\/b>/
+
 ``worker``
 ----------
 
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
@@ -8,11 +8,13 @@
 
 import os
 from mercurial import ui, hg, hook, error, encoding, templater, util, repoview
+from mercurial.templatefilters import websub
+from mercurial.i18n import _
 from common import get_stat, ErrorResponse, permhooks, caching
 from common import HTTP_OK, HTTP_NOT_MODIFIED, HTTP_BAD_REQUEST
 from common import HTTP_NOT_FOUND, HTTP_SERVER_ERROR
 from request import wsgirequest
-import webcommands, protocol, webutil
+import webcommands, protocol, webutil, re
 
 perms = {
     'changegroup': 'pull',
@@ -73,6 +75,7 @@ class hgweb(object):
         # a repo owner may set web.templates in .hg/hgrc to get any file
         # readable by the user running the CGI script
         self.templatepath = self.config('web', 'templates')
+        self.websubtable = self.loadwebsub()
 
     # The CGI scripts are often run by a user different from the repo owner.
     # Trust the settings from the .hg/hgrc files by default.
@@ -258,6 +261,47 @@ class hgweb(object):
                 return ['']
             return tmpl('error', error=inst.message)
 
+    def loadwebsub(self):
+        websubtable = []
+        websubdefs = self.repo.ui.configitems('websub')
+        # we must maintain interhg backwards compatibility
+        websubdefs += self.repo.ui.configitems('interhg')
+        for key, pattern in websubdefs:
+            # grab the delimiter from the character after the "s"
+            unesc = pattern[1]
+            delim = re.escape(unesc)
+
+            # identify portions of the pattern, taking care to avoid escaped
+            # delimiters. the replace format and flags are optional, but
+            # delimiters are required.
+            match = re.match(
+                r'^s%s(.+)(?:(?<=\\\\)|(?<!\\))%s(.*)%s([ilmsux])*$'
+                % (delim, delim, delim), pattern)
+            if not match:
+                self.repo.ui.warn(_("websub: invalid pattern for %s: %s\n")
+                                  % (key, pattern))
+                continue
+
+            # we need to unescape the delimiter for regexp and format
+            delim_re = re.compile(r'(?<!\\)\\%s' % delim)
+            regexp = delim_re.sub(unesc, match.group(1))
+            format = delim_re.sub(unesc, match.group(2))
+
+            # the pattern allows for 6 regexp flags, so set them if necessary
+            flagin = match.group(3)
+            flags = 0
+            if flagin:
+                for flag in flagin.upper():
+                    flags |= re.__dict__[flag]
+
+            try:
+                regexp = re.compile(regexp, flags)
+                websubtable.append((regexp, format))
+            except re.error:
+                self.repo.ui.warn(_("websub: invalid regexp for %s: %s\n")
+                                  % (key, regexp))
+        return websubtable
+
     def templater(self, req):
 
         # determine scheme, port and server name
@@ -311,9 +355,13 @@ class hgweb(object):
                              or req.env.get('REPO_NAME')
                              or req.url.strip('/') or self.repo.root)
 
+        def websubfilter(text):
+            return websub(text, self.websubtable)
+
         # create the templater
 
         tmpl = templater.templater(mapfile,
+                                   filters={"websub": websubfilter},
                                    defaults={"url": req.url,
                                              "logourl": logourl,
                                              "logoimg": logoimg,
diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -184,6 +184,13 @@ class pathauditor(object):
         # want to add "foo/bar/baz" before checking if there's a "foo/.hg"
         self.auditeddir.update(prefixes)
 
+    def check(self, path):
+        try:
+            self(path)
+            return True
+        except (OSError, util.Abort):
+            return False
+
 class abstractvfs(object):
     """Abstract base class; cannot be instantiated"""
 
@@ -745,21 +752,14 @@ def addremove(repo, pats=[], opts={}, dr
     ctx = repo[None]
     walkresults = repo.dirstate.walk(m, sorted(ctx.substate), True, False)
     for abs in sorted(walkresults):
-        good = True
-        try:
-            audit_path(abs)
-        except (OSError, util.Abort):
-            good = False
-
         st = walkresults[abs]
         dstate = repo.dirstate[abs]
-        if good and dstate == '?':
+        if dstate == '?' and audit_path.check(abs):
             unknown.append(abs)
             if repo.ui.verbose or not m.exact(abs):
                 rel = m.rel(abs)
                 repo.ui.status(_('adding %s\n') % ((pats and rel) or abs))
-        elif (dstate != 'r' and
-              (not good or not st or
+        elif (dstate != 'r' and (not st or
                (stat.S_ISDIR(st.st_mode) and not stat.S_ISLNK(st.st_mode)))):
             deleted.append(abs)
             if repo.ui.verbose or not m.exact(abs):
diff --git a/mercurial/templatefilters.py b/mercurial/templatefilters.py
--- a/mercurial/templatefilters.py
+++ b/mercurial/templatefilters.py
@@ -391,6 +391,15 @@ filters = {
     "xmlescape": xmlescape,
 }
 
+def websub(text, websubtable):
+    """:websub: Any text. Only applies to hgweb. Applies the regular
+    expression replacements defined in the websub section.
+    """
+    if websubtable:
+        for regexp, format in websubtable:
+            text = regexp.sub(format, text)
+    return text
+
 def fillfunc(context, mapping, args):
     if not (1 <= len(args) <= 2):
         raise error.ParseError(_("fill expects one or two arguments"))
diff --git a/mercurial/templates/gitweb/changelogentry.tmpl b/mercurial/templates/gitweb/changelogentry.tmpl
--- a/mercurial/templates/gitweb/changelogentry.tmpl
+++ b/mercurial/templates/gitweb/changelogentry.tmpl
@@ -8,7 +8,7 @@
 <i>{author|obfuscate} [{date|rfc822date}] rev {rev}</i><br/>
 </div>
 <div class="log_body">
-{desc|strip|escape|addbreaks|nonempty}
+{desc|strip|escape|websub|addbreaks|nonempty}
 <br/>
 <br/>
 </div>
diff --git a/mercurial/templates/gitweb/changeset.tmpl b/mercurial/templates/gitweb/changeset.tmpl
--- a/mercurial/templates/gitweb/changeset.tmpl
+++ b/mercurial/templates/gitweb/changeset.tmpl
@@ -41,7 +41,7 @@ changeset |
 </table></div>
 
 <div class="page_body">
-{desc|strip|escape|addbreaks|nonempty}
+{desc|strip|escape|websub|addbreaks|nonempty}
 </div>
 <div class="list_head"></div>
 <div class="title_text">
diff --git a/mercurial/templates/gitweb/fileannotate.tmpl b/mercurial/templates/gitweb/fileannotate.tmpl
--- a/mercurial/templates/gitweb/fileannotate.tmpl
+++ b/mercurial/templates/gitweb/fileannotate.tmpl
@@ -56,7 +56,7 @@ annotate |
 </div>
 
 <div class="page_path">
-{desc|strip|escape|addbreaks|nonempty}
+{desc|strip|escape|websub|addbreaks|nonempty}
 </div>
 <div class="page_body">
 <table>
diff --git a/mercurial/templates/gitweb/filerevision.tmpl b/mercurial/templates/gitweb/filerevision.tmpl
--- a/mercurial/templates/gitweb/filerevision.tmpl
+++ b/mercurial/templates/gitweb/filerevision.tmpl
@@ -56,7 +56,7 @@ file |
 </div>
 
 <div class="page_path">
-{desc|strip|escape|addbreaks|nonempty}
+{desc|strip|escape|websub|addbreaks|nonempty}
 </div>
 
 <div class="page_body">
diff --git a/mercurial/templates/monoblue/changelogentry.tmpl b/mercurial/templates/monoblue/changelogentry.tmpl
--- a/mercurial/templates/monoblue/changelogentry.tmpl
+++ b/mercurial/templates/monoblue/changelogentry.tmpl
@@ -2,5 +2,5 @@
 <ul class="changelog-entry">
     <li class="age">{date|rfc822date}</li>
     <li>by <span class="name">{author|obfuscate}</span> <span class="revdate">[{date|rfc822date}] rev {rev}</span></li>
-    <li class="description">{desc|strip|escape|addbreaks|nonempty}</li>
+    <li class="description">{desc|strip|escape|websub|addbreaks|nonempty}</li>
 </ul>
diff --git a/mercurial/templates/monoblue/changeset.tmpl b/mercurial/templates/monoblue/changeset.tmpl
--- a/mercurial/templates/monoblue/changeset.tmpl
+++ b/mercurial/templates/monoblue/changeset.tmpl
@@ -52,7 +52,7 @@
         {child%changesetchild}
     </dl>
 
-    <p class="description">{desc|strip|escape|addbreaks|nonempty}</p>
+    <p class="description">{desc|strip|escape|websub|addbreaks|nonempty}</p>
 
     <table>
     {files}
diff --git a/mercurial/templates/monoblue/fileannotate.tmpl b/mercurial/templates/monoblue/fileannotate.tmpl
--- a/mercurial/templates/monoblue/fileannotate.tmpl
+++ b/mercurial/templates/monoblue/fileannotate.tmpl
@@ -57,7 +57,7 @@
         <dd>{permissions|permissions}</dd>
     </dl>
 
-    <p class="description">{desc|strip|escape|addbreaks|nonempty}</p>
+    <p class="description">{desc|strip|escape|websub|addbreaks|nonempty}</p>
 
     <table class="annotated">
     {annotate%annotateline}
diff --git a/mercurial/templates/monoblue/filerevision.tmpl b/mercurial/templates/monoblue/filerevision.tmpl
--- a/mercurial/templates/monoblue/filerevision.tmpl
+++ b/mercurial/templates/monoblue/filerevision.tmpl
@@ -57,7 +57,7 @@
         <dd>{permissions|permissions}</dd>
     </dl>
 
-    <p class="description">{desc|strip|escape|addbreaks|nonempty}</p>
+    <p class="description">{desc|strip|escape|websub|addbreaks|nonempty}</p>
 
     <div class="source">
     {text%fileline}
diff --git a/mercurial/templates/paper/changeset.tmpl b/mercurial/templates/paper/changeset.tmpl
--- a/mercurial/templates/paper/changeset.tmpl
+++ b/mercurial/templates/paper/changeset.tmpl
@@ -40,7 +40,7 @@
 files, or words in the commit message</div>
 </form>
 
-<div class="description">{desc|strip|escape|nonempty}</div>
+<div class="description">{desc|strip|escape|websub|nonempty}</div>
 
 <table id="changesetEntry">
 <tr>
diff --git a/mercurial/templates/paper/fileannotate.tmpl b/mercurial/templates/paper/fileannotate.tmpl
--- a/mercurial/templates/paper/fileannotate.tmpl
+++ b/mercurial/templates/paper/fileannotate.tmpl
@@ -46,7 +46,7 @@
 files, or words in the commit message</div>
 </form>
 
-<div class="description">{desc|strip|escape|nonempty}</div>
+<div class="description">{desc|strip|escape|websub|nonempty}</div>
 
 <table id="changesetEntry">
 <tr>
diff --git a/mercurial/templates/paper/filecomparison.tmpl b/mercurial/templates/paper/filecomparison.tmpl
--- a/mercurial/templates/paper/filecomparison.tmpl
+++ b/mercurial/templates/paper/filecomparison.tmpl
@@ -45,7 +45,7 @@
 files, or words in the commit message</div>
 </form>
 
-<div class="description">{desc|strip|escape|nonempty}</div>
+<div class="description">{desc|strip|escape|websub|nonempty}</div>
 
 <table id="changesetEntry">
 <tr>
diff --git a/mercurial/templates/paper/filediff.tmpl b/mercurial/templates/paper/filediff.tmpl
--- a/mercurial/templates/paper/filediff.tmpl
+++ b/mercurial/templates/paper/filediff.tmpl
@@ -45,7 +45,7 @@
 files, or words in the commit message</div>
 </form>
 
-<div class="description">{desc|strip|escape|nonempty}</div>
+<div class="description">{desc|strip|escape|websub|nonempty}</div>
 
 <table id="changesetEntry">
 <tr>
diff --git a/mercurial/templates/paper/filerevision.tmpl b/mercurial/templates/paper/filerevision.tmpl
--- a/mercurial/templates/paper/filerevision.tmpl
+++ b/mercurial/templates/paper/filerevision.tmpl
@@ -44,7 +44,7 @@
 files, or words in the commit message</div>
 </form>
 
-<div class="description">{desc|strip|escape|nonempty}</div>
+<div class="description">{desc|strip|escape|websub|nonempty}</div>
 
 <table id="changesetEntry">
 <tr>
diff --git a/mercurial/templates/spartan/changeset.tmpl b/mercurial/templates/spartan/changeset.tmpl
--- a/mercurial/templates/spartan/changeset.tmpl
+++ b/mercurial/templates/spartan/changeset.tmpl
@@ -39,7 +39,7 @@
 </tr>
 <tr>
  <th class="description">description:</th>
- <td class="description">{desc|strip|escape|addbreaks|nonempty}</td>
+ <td class="description">{desc|strip|escape|websub|addbreaks|nonempty}</td>
 </tr>
 </table>
 
diff --git a/mercurial/templates/spartan/fileannotate.tmpl b/mercurial/templates/spartan/fileannotate.tmpl
--- a/mercurial/templates/spartan/fileannotate.tmpl
+++ b/mercurial/templates/spartan/fileannotate.tmpl
@@ -38,7 +38,7 @@
 </tr>
 <tr>
   <td class="metatag">description:</td>
-  <td>{desc|strip|escape|addbreaks|nonempty}</td>
+  <td>{desc|strip|escape|websub|addbreaks|nonempty}</td>
 </tr>
 </table>
 
diff --git a/mercurial/templates/spartan/filerevision.tmpl b/mercurial/templates/spartan/filerevision.tmpl
--- a/mercurial/templates/spartan/filerevision.tmpl
+++ b/mercurial/templates/spartan/filerevision.tmpl
@@ -36,7 +36,7 @@
  <td>{permissions|permissions}</td></tr>
 <tr>
   <td class="metatag">description:</td>
-  <td>{desc|strip|escape|addbreaks|nonempty}</td>
+  <td>{desc|strip|escape|websub|addbreaks|nonempty}</td>
 </tr>
 </table>
 
diff --git a/tests/test-symlinks.t b/tests/test-symlinks.t
--- a/tests/test-symlinks.t
+++ b/tests/test-symlinks.t
@@ -149,6 +149,10 @@ directory moved and symlinked
   adding foo/a
   $ mv foo bar
   $ ln -s bar foo
+  $ hg status
+  ! foo/a
+  ? bar/a
+  ? foo
 
 now addremove should remove old files
 
diff --git a/tests/test-interhg.t b/tests/test-websub.t
rename from tests/test-interhg.t
rename to tests/test-websub.t
--- a/tests/test-interhg.t
+++ b/tests/test-websub.t
@@ -5,11 +5,15 @@
 
   $ cat > .hg/hgrc <<EOF
   > [extensions]
+  > # this is only necessary to check that the mapping from
+  > # interhg to websub works
   > interhg =
   > 
+  > [websub]
+  > issues = s|Issue(\d+)|<a href="http://bts.example.org/issue\1">Issue\1</a>|
+  > 
   > [interhg]
-  > issues = s|Issue(\d+)|<a href="http://bts.example.org/issue\1">Issue\1</a>|
-  > 
+  > # check that we maintain some interhg backwards compatibility...
   > # yes, 'x' is a weird delimiter...
   > markbugs = sxbugx<i class="\x">bug</i>x
   > EOF
@@ -23,9 +27,8 @@
 
 log
 
-  $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT '' | grep bts
-    <td class="description"><a href="/rev/1b0e7ece6bd6"><a href="http://bts.example.org/issue123">Issue123</a>: fixed the <i class="x">bug</i>!</a><span class="branchhead">default</span> <span class="tag">tip</span> </td>
-
+  $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT "rev/tip" | grep bts
+  <div class="description"><a href="http://bts.example.org/issue123">Issue123</a>: fixed the <i class="x">bug</i>!</div>
 errors
 
   $ cat errors.log