diff --git a/hgext/convert/__init__.py b/hgext/convert/__init__.py
--- a/hgext/convert/__init__.py
+++ b/hgext/convert/__init__.py
@@ -12,7 +12,7 @@ from git import convert_git
 from hg import mercurial_source, mercurial_sink
 from subversion import convert_svn, debugsvnlog
 
-import os, shlex, shutil
+import os, shutil
 from mercurial import hg, ui, util, commands
 from mercurial.i18n import _
 
@@ -285,92 +285,6 @@ class converter(object):
         if self.revmapfilefd:
             self.revmapfilefd.close()
 
-def rpairs(name):
-    e = len(name)
-    while e != -1:
-        yield name[:e], name[e+1:]
-        e = name.rfind('/', 0, e)
-
-class filemapper(object):
-    '''Map and filter filenames when importing.
-    A name can be mapped to itself, a new name, or None (omit from new
-    repository).'''
-
-    def __init__(self, ui, path=None):
-        self.ui = ui
-        self.include = {}
-        self.exclude = {}
-        self.rename = {}
-        if path:
-            if self.parse(path):
-                raise util.Abort(_('errors in filemap'))
-
-    def parse(self, path):
-        errs = 0
-        def check(name, mapping, listname):
-            if name in mapping:
-                self.ui.warn(_('%s:%d: %r already in %s list\n') %
-                             (lex.infile, lex.lineno, name, listname))
-                return 1
-            return 0
-        lex = shlex.shlex(open(path), path, True)
-        lex.wordchars += '!@#$%^&*()-=+[]{}|;:,./<>?'
-        cmd = lex.get_token()
-        while cmd:
-            if cmd == 'include':
-                name = lex.get_token()
-                errs += check(name, self.exclude, 'exclude')
-                self.include[name] = name
-            elif cmd == 'exclude':
-                name = lex.get_token()
-                errs += check(name, self.include, 'include')
-                errs += check(name, self.rename, 'rename')
-                self.exclude[name] = name
-            elif cmd == 'rename':
-                src = lex.get_token()
-                dest = lex.get_token()
-                errs += check(src, self.exclude, 'exclude')
-                self.rename[src] = dest
-            elif cmd == 'source':
-                errs += self.parse(lex.get_token())
-            else:
-                self.ui.warn(_('%s:%d: unknown directive %r\n') %
-                             (lex.infile, lex.lineno, cmd))
-                errs += 1
-            cmd = lex.get_token()
-        return errs
-
-    def lookup(self, name, mapping):
-        for pre, suf in rpairs(name):
-            try:
-                return mapping[pre], pre, suf
-            except KeyError, err:
-                pass
-        return '', name, ''
-
-    def __call__(self, name):
-        if self.include:
-            inc = self.lookup(name, self.include)[0]
-        else:
-            inc = name
-        if self.exclude:
-            exc = self.lookup(name, self.exclude)[0]
-        else:
-            exc = ''
-        if not inc or exc:
-            return None
-        newpre, pre, suf = self.lookup(name, self.rename)
-        if newpre:
-            if newpre == '.':
-                return suf
-            if suf:
-                return newpre + '/' + suf
-            return newpre
-        return name
-
-    def active(self):
-        return bool(self.include or self.exclude or self.rename)
-
 def convert(ui, src, dest=None, revmapfile=None, **opts):
     """Convert a foreign SCM repository to a Mercurial one.