diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -820,19 +820,6 @@ class changeset_templater(changeset_prin
         def showcopies(repo, ctx, templ, **args):
             c = [{'name': x[0], 'source': x[1]} for x in copies]
             return showlist(templ, 'file_copy', c, plural='file_copies', **args)
-
-        files = []
-        def getfiles():
-            if not files:
-                files[:] = self.repo.status(ctx.parents()[0].node(),
-                                            ctx.node())[:3]
-            return files
-        def showmods(repo, ctx, templ, **args):
-            return showlist(templ, 'file_mod', getfiles()[0], **args)
-        def showadds(repo, ctx, templ, **args):
-            return showlist(templ, 'file_add', getfiles()[1], **args)
-        def showdels(repo, ctx, templ, **args):
-            return showlist(templ, 'file_del', getfiles()[2], **args)
         
         def showlatesttag(repo, ctx, templ, **args):
             return self._latesttaginfo(ctx.rev())[2]
@@ -840,9 +827,6 @@ class changeset_templater(changeset_prin
             return self._latesttaginfo(ctx.rev())[1]
 
         defprops = {
-            'file_adds': showadds,
-            'file_dels': showdels,
-            'file_mods': showmods,
             'file_copies': showcopies,            
             'parents': showparents,            
             'latesttag': showlatesttag,
@@ -854,6 +838,7 @@ class changeset_templater(changeset_prin
         props['templ'] = self.t
         props['ctx'] = ctx
         props['repo'] = self.repo
+        props['revcache'] = {}
 
         # find correct templates for current mode
 
diff --git a/mercurial/templatekw.py b/mercurial/templatekw.py
--- a/mercurial/templatekw.py
+++ b/mercurial/templatekw.py
@@ -69,6 +69,12 @@ def showlist(templ, name, values, plural
     if endname in templ:
         yield templ(endname, **args)
 
+def getfiles(repo, ctx, revcache):
+    if 'files' not in revcache:
+        revcache['files'] = repo.status(ctx.parents()[0].node(),
+                                        ctx.node())[:3]
+    return revcache['files']
+
 def showauthor(repo, ctx, templ, **args):
     return ctx.user()
 
@@ -99,6 +105,15 @@ def showextras(repo, ctx, templ, **args)
         args.update(dict(key=key, value=value))
         yield templ('extra', **args)
 
+def showfileadds(repo, ctx, templ, revcache, **args):
+    return showlist(templ, 'file_add', getfiles(repo, ctx, revcache)[1], **args)
+
+def showfiledels(repo, ctx, templ, revcache, **args):
+    return showlist(templ, 'file_del', getfiles(repo, ctx, revcache)[2], **args)
+
+def showfilemods(repo, ctx, templ, revcache, **args):
+    return showlist(templ, 'file_mod', getfiles(repo, ctx, revcache)[0], **args)
+
 def showfiles(repo, ctx, templ, **args):
     return showlist(templ, 'file', ctx.files(), **args)
 
@@ -124,6 +139,9 @@ keywords = {
     'desc': showdescription,
     'diffstat': showdiffstat,
     'extras': showextras,
+    'file_adds': showfileadds,
+    'file_dels': showfiledels,
+    'file_mods': showfilemods,
     'files': showfiles,
     'manifest': showmanifest,
     'node': shownode,
diff --git a/tests/test-template-engine b/tests/test-template-engine
--- a/tests/test-template-engine
+++ b/tests/test-template-engine
@@ -11,7 +11,7 @@ class mytemplater(object):
     def process(self, t, map):
         tmpl = self.loader(t)
         for k, v in map.iteritems():
-            if k in ('templ', 'ctx', 'repo'):
+            if k in ('templ', 'ctx', 'repo', 'revcache'):
                 continue
             if hasattr(v, '__call__'):
                 v = v(**map)