keyword: no expansion in web diffs

Expansion in hgweb view of changesets and diffs is not needed and
only distracting.

Expansion stays enable in file and archive requests where it
makes sense.

hgext/keyword.py

@@ -80,6 +80,7 b" like CVS' $Log$, are not supported. A ke"
 
 from mercurial import commands, cmdutil, context, dispatch, filelog, revlog
 from mercurial import patch, localrepo, templater, templatefilters, util
+from mercurial.hgweb import webcommands
 from mercurial.node import *
 from mercurial.i18n import _
 import re, shutil, tempfile, time
@@ -121,7 +122,23 b' def _kwdispatch_parse(ui, args):'
     _cmd, func, args, options, _cmdoptions = _dispatch_parse(ui, args)
     return _cmd, func, args, options, _cmdoptions
 
+def kwweb_changeset(web, req, tmpl):
+    try:
+        _kwtemplater.matcher = util.never
+    except AttributeError:
+        pass
+    return web.changeset(tmpl, web.changectx(req))
+
+def kwweb_filediff(web, req, tmpl):
+    try:
+        _kwtemplater.matcher = util.never
+    except AttributeError:
+        pass
+    return web.filediff(tmpl, web.filectx(req))
+
 dispatch._parse = _kwdispatch_parse
+webcommands.changeset = webcommands.rev = kwweb_changeset
+webcommands.filediff = webcommands.diff = kwweb_filediff
 
 
 class kwtemplater(object):