diff -r 3e896b51aa5d -r d269ddbf54f0 mercurial/utils/storageutil.py
--- a/mercurial/utils/storageutil.py	Mon Sep 24 14:31:31 2018 -0700
+++ b/mercurial/utils/storageutil.py	Mon Sep 24 14:33:45 2018 -0700
@@ -65,3 +65,7 @@
     keys = sorted(meta)
     metatext = b''.join(b'%s: %s\n' % (k, meta[k]) for k in keys)
     return b'\x01\n%s\x01\n%s' % (metatext, text)
+
+def iscensoredtext(text):
+    meta = parsemeta(text)[0]
+    return meta and b'censored' in meta