narrow: filter files by narrowspec in ctx.matches() This has no effect yet because 1) for committed changes, ctx.matches() just calls ctx.walk(), which we updated in the previous patch, and 2) for the working copy, the filtering is also done in the overridden dirstate.walk() in narrowdirstate. Differential Revision: https://phab.mercurial-scm.org/D4899

--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -1173,6 +1173,7 @@
                                                unknown=True, ignored=False))
 
     def matches(self, match):
+        match = self._repo.narrowmatch(match)
         ds = self._repo.dirstate
         return sorted(f for f in ds.matches(match) if ds[f] != 'r')