diff --git a/hgext/highlight/__init__.py b/hgext/highlight/__init__.py
--- a/hgext/highlight/__init__.py
+++ b/hgext/highlight/__init__.py
@@ -58,7 +58,7 @@
         highlight.pygmentize(field, fctx, style, tmpl,
                 guessfilenameonly=filenameonly)
 
-def filerevision_highlight(orig, web, req, fctx):
+def filerevision_highlight(orig, web, fctx):
     mt = ''.join(web.tmpl('mimetype', encoding=encoding.encoding))
     # only pygmentize for mimetype containing 'html' so we both match
     # 'text/html' and possibly 'application/xhtml+xml' in the future
@@ -70,17 +70,17 @@
     if 'html' in mt:
         pygmentize(web, 'fileline', fctx, web.tmpl)
 
-    return orig(web, req, fctx)
+    return orig(web, fctx)
 
-def annotate_highlight(orig, web, req, tmpl):
+def annotate_highlight(orig, web):
     mt = ''.join(web.tmpl('mimetype', encoding=encoding.encoding))
     if 'html' in mt:
         fctx = webutil.filectx(web.repo, web.req)
         pygmentize(web, 'annotateline', fctx, web.tmpl)
 
-    return orig(web, req, web.tmpl)
+    return orig(web)
 
-def generate_css(web, req, tmpl):
+def generate_css(web):
     pg_style = web.config('web', 'pygments_style', 'colorful')
     fmter = highlight.HtmlFormatter(style=pg_style)
     web.res.headers['Content-Type'] = 'text/css'
diff --git a/hgext/keyword.py b/hgext/keyword.py
--- a/hgext/keyword.py
+++ b/hgext/keyword.py
@@ -614,14 +614,14 @@
         if kwt:
             kwt.restrict = restrict
 
-def kwweb_skip(orig, web, req, tmpl):
+def kwweb_skip(orig, web):
     '''Wraps webcommands.x turning off keyword expansion.'''
     kwt = getattr(web.repo, '_keywordkwt', None)
     if kwt:
         origmatch = kwt.match
         kwt.match = util.never
     try:
-        for chunk in orig(web, req, tmpl):
+        for chunk in orig(web):
             yield chunk
     finally:
         if kwt:
diff --git a/hgext/largefiles/overrides.py b/hgext/largefiles/overrides.py
--- a/hgext/largefiles/overrides.py
+++ b/hgext/largefiles/overrides.py
@@ -932,11 +932,11 @@
     finally:
         repo.unfiltered().lfstatus = False
 
-def hgwebarchive(orig, web, req, tmpl):
+def hgwebarchive(orig, web):
     web.repo.lfstatus = True
 
     try:
-        return orig(web, req, tmpl)
+        return orig(web)
     finally:
         web.repo.lfstatus = False
 
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
@@ -404,7 +404,7 @@
                 # override easily enough.
                 res.status = '200 Script output follows'
                 res.headers['Content-Type'] = ctype
-                return getattr(webcommands, cmd)(rctx, wsgireq, rctx.tmpl)
+                return getattr(webcommands, cmd)(rctx)
 
         except (error.LookupError, error.RepoLookupError) as err:
             msg = pycompat.bytestr(err)
diff --git a/mercurial/hgweb/webcommands.py b/mercurial/hgweb/webcommands.py
--- a/mercurial/hgweb/webcommands.py
+++ b/mercurial/hgweb/webcommands.py
@@ -65,7 +65,7 @@
     Usage:
 
     @webcommand('mycommand')
-    def mycommand(web, req, tmpl):
+    def mycommand(web):
         pass
     """
 
@@ -78,7 +78,7 @@
         return func
 
 @webcommand('log')
-def log(web, req, tmpl):
+def log(web):
     """
     /log[/{revision}[/{path}]]
     --------------------------
@@ -95,23 +95,23 @@
     """
 
     if web.req.qsparams.get('file'):
-        return filelog(web, req, None)
+        return filelog(web)
     else:
-        return changelog(web, req, None)
+        return changelog(web)
 
 @webcommand('rawfile')
-def rawfile(web, req, tmpl):
+def rawfile(web):
     guessmime = web.configbool('web', 'guessmime')
 
     path = webutil.cleanpath(web.repo, web.req.qsparams.get('file', ''))
     if not path:
-        return manifest(web, req, None)
+        return manifest(web)
 
     try:
         fctx = webutil.filectx(web.repo, web.req)
     except error.LookupError as inst:
         try:
-            return manifest(web, req, None)
+            return manifest(web)
         except ErrorResponse:
             raise inst
 
@@ -135,7 +135,7 @@
     web.res.setbodybytes(text)
     return web.res.sendresponse()
 
-def _filerevision(web, req, fctx):
+def _filerevision(web, fctx):
     f = fctx.path()
     text = fctx.data()
     parity = paritygen(web.stripecount)
@@ -164,7 +164,7 @@
         **pycompat.strkwargs(webutil.commonentry(web.repo, fctx)))
 
 @webcommand('file')
-def file(web, req, tmpl):
+def file(web):
     """
     /file/{revision}[/{path}]
     -------------------------
@@ -184,16 +184,16 @@
     be rendered.
     """
     if web.req.qsparams.get('style') == 'raw':
-        return rawfile(web, req, None)
+        return rawfile(web)
 
     path = webutil.cleanpath(web.repo, web.req.qsparams.get('file', ''))
     if not path:
-        return manifest(web, req, None)
+        return manifest(web)
     try:
-        return _filerevision(web, req, webutil.filectx(web.repo, web.req))
+        return _filerevision(web, webutil.filectx(web.repo, web.req))
     except error.LookupError as inst:
         try:
-            return manifest(web, req, None)
+            return manifest(web)
         except ErrorResponse:
             raise inst
 
@@ -354,7 +354,7 @@
         showunforcekw=showunforcekw)
 
 @webcommand('changelog')
-def changelog(web, req, tmpl, shortlog=False):
+def changelog(web, shortlog=False):
     """
     /changelog[/{revision}]
     -----------------------
@@ -452,7 +452,7 @@
         query=query)
 
 @webcommand('shortlog')
-def shortlog(web, req, tmpl):
+def shortlog(web):
     """
     /shortlog
     ---------
@@ -463,10 +463,10 @@
     difference is the ``shortlog`` template will be rendered instead of the
     ``changelog`` template.
     """
-    return changelog(web, req, None, shortlog=True)
+    return changelog(web, shortlog=True)
 
 @webcommand('changeset')
-def changeset(web, req, tmpl):
+def changeset(web):
     """
     /changeset[/{revision}]
     -----------------------
@@ -498,7 +498,7 @@
     return path
 
 @webcommand('manifest')
-def manifest(web, req, tmpl):
+def manifest(web):
     """
     /manifest[/{revision}[/{path}]]
     -------------------------------
@@ -598,7 +598,7 @@
         **pycompat.strkwargs(webutil.commonentry(web.repo, ctx)))
 
 @webcommand('tags')
-def tags(web, req, tmpl):
+def tags(web):
     """
     /tags
     -----
@@ -632,7 +632,7 @@
         latestentry=lambda **x: entries(True, True, **x))
 
 @webcommand('bookmarks')
-def bookmarks(web, req, tmpl):
+def bookmarks(web):
     """
     /bookmarks
     ----------
@@ -671,7 +671,7 @@
         latestentry=lambda **x: entries(latestonly=True, **x))
 
 @webcommand('branches')
-def branches(web, req, tmpl):
+def branches(web):
     """
     /branches
     ---------
@@ -694,7 +694,7 @@
         latestentry=latestentry)
 
 @webcommand('summary')
-def summary(web, req, tmpl):
+def summary(web):
     """
     /summary
     --------
@@ -778,7 +778,7 @@
         labels=web.configlist('web', 'labels'))
 
 @webcommand('filediff')
-def filediff(web, req, tmpl):
+def filediff(web):
     """
     /diff/{revision}/{path}
     -----------------------
@@ -827,7 +827,7 @@
 diff = webcommand('diff')(filediff)
 
 @webcommand('comparison')
-def comparison(web, req, tmpl):
+def comparison(web):
     """
     /comparison/{revision}/{path}
     -----------------------------
@@ -902,7 +902,7 @@
         **pycompat.strkwargs(webutil.commonentry(web.repo, ctx)))
 
 @webcommand('annotate')
-def annotate(web, req, tmpl):
+def annotate(web):
     """
     /annotate/{revision}/{path}
     ---------------------------
@@ -994,7 +994,7 @@
         **pycompat.strkwargs(webutil.commonentry(web.repo, fctx)))
 
 @webcommand('filelog')
-def filelog(web, req, tmpl):
+def filelog(web):
     """
     /filelog/{revision}/{path}
     --------------------------
@@ -1132,7 +1132,7 @@
         **pycompat.strkwargs(webutil.commonentry(web.repo, fctx)))
 
 @webcommand('archive')
-def archive(web, req, tmpl):
+def archive(web):
     """
     /archive/{revision}.{format}[/{path}]
     -------------------------------------
@@ -1206,7 +1206,7 @@
     return []
 
 @webcommand('static')
-def static(web, req, tmpl):
+def static(web):
     fname = web.req.qsparams['file']
     # a repo owner may set web.static in .hg/hgrc to get any file
     # readable by the user running the CGI script
@@ -1221,7 +1221,7 @@
     return web.res.sendresponse()
 
 @webcommand('graph')
-def graph(web, req, tmpl):
+def graph(web):
     """
     /graph[/{revision}]
     -------------------
@@ -1388,7 +1388,7 @@
     return doc
 
 @webcommand('help')
-def help(web, req, tmpl):
+def help(web):
     """
     /help[/{topic}]
     ---------------
diff --git a/tests/hgweberror.py b/tests/hgweberror.py
--- a/tests/hgweberror.py
+++ b/tests/hgweberror.py
@@ -6,7 +6,7 @@
     webcommands,
 )
 
-def raiseerror(web, req, tmpl):
+def raiseerror(web):
     '''Dummy web command that raises an uncaught Exception.'''
 
     # Simulate an error after partial response.