diff -r a77a75a428f7 -r 0d6b3572ad92 mercurial/match.py
--- a/mercurial/match.py	Tue May 16 21:17:40 2017 -0700
+++ b/mercurial/match.py	Wed May 17 09:43:50 2017 -0700
@@ -281,14 +281,6 @@
         - optimization might be possible and necessary.'''
         return self._always
 
-    def ispartial(self):
-        '''True if the matcher won't always match.
-
-        Although it's just the inverse of _always in this implementation,
-        an extension such as narrowhg might make it return something
-        slightly different.'''
-        return not self._always
-
     def isexact(self):
         return self.matchfn == self.exact