narrow: extract repo property for store narrowmatcher

When a repo lock is released, we try to persist the manifest
cache. That involves getting the narrowmatcher for the
manifestlog. That should not fail if the store and working copy
narrowspecs are out of sync. Without this patch, the later patches in
this series will fail because of that.

Differential Revision: https://phab.mercurial-scm.org/D5508

hgext/lfs/__init__.py

@@ -243,7 +243,7 b' def _reposetup(ui, repo):'
                 s = repo.set('%n:%n', _bin(kwargs[r'node']), _bin(last))
             else:
                 s = repo.set('%n', _bin(kwargs[r'node']))
-            match = repo.narrowmatch()
+            match = repo._storenarrowmatch
             for ctx in s:
                 # TODO: is there a way to just walk the files in the commit?
                 if any(ctx[f].islfs() for f in ctx.files()

mercurial/localrepo.py

@@ -815,7 +815,7 b' class revlognarrowfilestorage(object):'
         if path[0] == b'/':
             path = path[1:]
 
-        return filelog.narrowfilelog(self.svfs, path, self.narrowmatch())
+        return filelog.narrowfilelog(self.svfs, path, self._storenarrowmatch)
 
 def makefilestorage(requirements, features, **kwargs):
     """Produce a type conforming to ``ilocalrepositoryfilestorage``."""
@@ -1191,7 +1191,7 b' class localrepository(object):'
     def manifestlog(self):
         rootstore = manifest.manifestrevlog(self.svfs)
         return manifest.manifestlog(self.svfs, self, rootstore,
-                                    self.narrowmatch())
+                                    self._storenarrowmatch)
 
     @repofilecache('dirstate')
     def dirstate(self):
@@ -1224,6 +1224,13 b' class localrepository(object):'
         return narrowspec.load(self)
 
     @storecache(narrowspec.FILENAME)
+    def _storenarrowmatch(self):
+        if repository.NARROW_REQUIREMENT not in self.requirements:
+            return matchmod.always(self.root, '')
+        include, exclude = self.narrowpats
+        return narrowspec.match(self.root, include=include, exclude=exclude)
+
+    @storecache(narrowspec.FILENAME)
     def _narrowmatch(self):
         if repository.NARROW_REQUIREMENT not in self.requirements:
             return matchmod.always(self.root, '')