diff --git a/hgext/narrow/narrowbundle2.py b/hgext/narrow/narrowbundle2.py
--- a/hgext/narrow/narrowbundle2.py
+++ b/hgext/narrow/narrowbundle2.py
@@ -54,11 +54,11 @@
         cgversions = [v for v in cgversions
                       if v in changegroup.supportedoutgoingversions(repo)]
         if not cgversions:
-            raise ValueError(_('no common changegroup version'))
+            raise ValueError(_(r'no common changegroup version'))
         version = max(cgversions)
     else:
-        raise ValueError(_("server does not advertise changegroup version,"
-                           " can't negotiate support for ellipsis nodes"))
+        raise ValueError(_(r"server does not advertise changegroup version,"
+                           r" can't negotiate support for ellipsis nodes"))
 
     include = sorted(filter(bool, kwargs.get(r'includepats', [])))
     exclude = sorted(filter(bool, kwargs.get(r'excludepats', [])))
diff --git a/mercurial/exchange.py b/mercurial/exchange.py
--- a/mercurial/exchange.py
+++ b/mercurial/exchange.py
@@ -920,7 +920,7 @@
                       if v in changegroup.supportedoutgoingversions(
                           pushop.repo)]
         if not cgversions:
-            raise ValueError(_('no common changegroup version'))
+            raise ValueError(_(r'no common changegroup version'))
         version = max(cgversions)
     cgstream = changegroup.makestream(pushop.repo, pushop.outgoing, version,
                                       'push')
@@ -2130,22 +2130,22 @@
     Returns a 2-tuple of a dict with metadata about the generated bundle
     and an iterator over raw chunks (of varying sizes).
     """
-    kwargs = pycompat.byteskwargs(kwargs)
     info = {}
     usebundle2 = bundle2requested(bundlecaps)
     # bundle10 case
     if not usebundle2:
-        if bundlecaps and not kwargs.get('cg', True):
-            raise ValueError(_('request for bundle10 must include changegroup'))
+        if bundlecaps and not kwargs.get(r'cg', True):
+            raise ValueError(_(r'request for bundle10 must include changegroup'))
 
         if kwargs:
-            raise ValueError(_('unsupported getbundle arguments: %s')
-                             % ', '.join(sorted(kwargs.keys())))
+            raise ValueError(_(r'unsupported getbundle arguments: %s')
+                             % r', '.join(sorted(kwargs.keys())))
         outgoing = _computeoutgoing(repo, heads, common)
         info['bundleversion'] = 1
         return info, changegroup.makestream(repo, outgoing, '01', source,
                                             bundlecaps=bundlecaps)
 
+    kwargs = pycompat.byteskwargs(kwargs)
     # bundle20 case
     info['bundleversion'] = 2
     b2caps = {}
@@ -2184,7 +2184,7 @@
         cgversions = [v for v in cgversions
                       if v in changegroup.supportedoutgoingversions(repo)]
         if not cgversions:
-            raise ValueError(_('no common changegroup version'))
+            raise ValueError(_(r'no common changegroup version'))
         version = max(cgversions)
 
     outgoing = _computeoutgoing(repo, heads, common)
@@ -2228,7 +2228,7 @@
     if not kwargs.get(r'bookmarks', False):
         return
     if 'bookmarks' not in b2caps:
-        raise ValueError(_('no common bookmarks exchange method'))
+        raise ValueError(_(r'no common bookmarks exchange method'))
     books  = bookmod.listbinbookmarks(repo)
     data = bookmod.binaryencode(books)
     if data:
@@ -2263,7 +2263,7 @@
     """add phase heads part to the requested bundle"""
     if kwargs.get(r'phases', False):
         if not 'heads' in b2caps.get('phases'):
-            raise ValueError(_('no common phases exchange method'))
+            raise ValueError(_(r'no common phases exchange method'))
         if heads is None:
             heads = repo.heads()