=== modified file 'Mailman/Archiver/HyperArch.py'
--- Mailman/Archiver/HyperArch.py	2015-01-23 00:09:03 +0000
+++ Mailman/Archiver/HyperArch.py	2018-05-03 14:59:23 +0000
@@ -56,6 +56,7 @@
 
 # Set up i18n.  Assume the current language has already been set in the caller.
 _ = i18n._
+C_ = i18n.C_
 
 gzip = None
 if mm_cfg.GZIP_ARCHIVE_TXT_FILES:
@@ -912,7 +913,7 @@
         A string can be returned if the list only contains one entry,
         and the empty list is legal."""
         res = self.dateToVolName(float(article.date))
-        self.message(_("figuring article archives\n"))
+        self.message(C_("figuring article archives\n"))
         self.message(res + "\n")
         return res
 
@@ -1050,7 +1051,7 @@
         self.depth=0
         print self.html_head()
         if not self.THREADLAZY and self.type=='Thread':
-            self.message(_("Computing threaded index\n"))
+            self.message(C_("Computing threaded index\n"))
             self.updateThreadedIndex()
 
     def write_index_footer(self):
@@ -1315,14 +1316,14 @@
     def update_article(self, arcdir, article, prev, next):
         seq = article.sequence
         filename = os.path.join(arcdir, article.filename)
-        self.message(_('Updating HTML for article %(seq)s'))
+        self.message(C_('Updating HTML for article %(seq)s'))
         try:
             f = open(filename)
             article.loadbody_fromHTML(f)
             f.close()
         except IOError, e:
             if e.errno <> errno.ENOENT: raise
-            self.message(_('article file %(filename)s is missing!'))
+            self.message(C_('article file %(filename)s is missing!'))
         article.prev = prev
         article.next = next
         omask = os.umask(002)

=== modified file 'Mailman/Archiver/pipermail.py'
--- Mailman/Archiver/pipermail.py	2018-01-12 12:44:15 +0000
+++ Mailman/Archiver/pipermail.py	2018-05-03 14:59:23 +0000
@@ -20,7 +20,7 @@
 from Mailman import Errors
 from Mailman.Mailbox import ArchiverMailbox
 from Mailman.Logging.Syslog import syslog
-from Mailman.i18n import _
+from Mailman.i18n import _, C_
 
 # True/False
 try:
@@ -295,7 +295,7 @@
             if errno != 2:
                 raise os.error, errdata
             else:
-                self.message(_('Creating archive directory ') + self.basedir)
+                self.message(C_('Creating archive directory ') + self.basedir)
                 omask = os.umask(0)
                 try:
                     os.mkdir(self.basedir, self.DIRMODE)
@@ -307,7 +307,7 @@
             if not reload:
                 raise IOError
             f = open(os.path.join(self.basedir, 'pipermail.pck'), 'r')
-            self.message(_('Reloading pickled archive state'))
+            self.message(C_('Reloading pickled archive state'))
             d = pickle.load(f)
             f.close()
             for key, value in d.items():
@@ -334,7 +334,7 @@
         self.update_TOC = 0
         self.write_TOC()
         # Save the collective state
-        self.message(_('Pickling archive state into ')
+        self.message(C_('Pickling archive state into ')
                      + os.path.join(self.basedir, 'pipermail.pck'))
         self.database.close()
         del self.database
@@ -446,7 +446,7 @@
     # dirtied or not.
     def update_archive(self, archive):
         self.archive = archive
-        self.message(_("Updating index files for archive [%(archive)s]"))
+        self.message(C_("Updating index files for archive [%(archive)s]"))
         arcdir = os.path.join(self.basedir, archive)
         self.__set_parameters(archive)
 
@@ -479,7 +479,7 @@
         self._restore_stdout()
 
     def _update_thread_index(self, archive, arcdir):
-        self.message(_("  Thread"))
+        self.message(C_("  Thread"))
         self._open_index_file_as_stdout(arcdir, "thread")
         self.type = 'Thread'
         self.write_index_header()
@@ -590,7 +590,7 @@
                 # It was an unparseable message
                 continue
             msgid = m.get('message-id', 'n/a')
-            self.message(_('#%(counter)05d %(msgid)s'))
+            self.message(C_('#%(counter)05d %(msgid)s'))
             a = self._makeArticle(m, self.sequence)
             self.sequence += 1
             self.add_article(a)