--- a/mercurial/mdiff.py	Wed Apr 26 21:56:47 2017 +0900
+++ b/mercurial/mdiff.py	Wed Apr 26 22:03:37 2017 +0900
@@ -20,6 +20,8 @@
     util,
 )
 
+blocks = bdiff.blocks
+fixws = bdiff.fixws
 patches = mpatch.patches
 patchedsize = mpatch.patchedsize
 textdiff = bdiff.bdiff