commitablectx: move walk from workingctx

mercurial/context.py

@@ -1034,6 +1034,10 b' class commitablectx(basectx):'
         """return the ancestor context of self and c2"""
         return self._parents[0].ancestor(c2) # punt on two parents for now
 
+    def walk(self, match):
+        return sorted(self._repo.dirstate.walk(match, sorted(self.substate),
+                                               True, False))
+
 class workingctx(commitablectx):
     """A workingctx object makes access to data related to
     the current working directory convenient.
@@ -1065,10 +1069,6 b' class workingctx(commitablectx):'
         return workingfilectx(self._repo, path, workingctx=self,
                               filelog=filelog)
 
-    def walk(self, match):
-        return sorted(self._repo.dirstate.walk(match, sorted(self.substate),
-                                               True, False))
-
     def dirty(self, missing=False, merge=True, branch=True):
         "check whether a working directory is modified"
         # check subrepos first