commitablectx: move user from workingctx

mercurial/context.py

@@ -957,6 +957,9 b' class commitablectx(basectx):'
         self._status = stat[:4]
         return stat
 
+    def user(self):
+        return self._user or self._repo.ui.username()
+
 class workingctx(commitablectx):
     """A workingctx object makes access to data related to
     the current working directory convenient.
@@ -987,8 +990,6 b' class workingctx(commitablectx):'
             p = p[:-1]
         return [changectx(self._repo, x) for x in p]
 
-    def user(self):
-        return self._user or self._repo.ui.username()
     def date(self):
         return self._date
     def description(self):