repoview: wrap changelog class when filtering The class doesn't yet do anything. I'll move the filter-aware overrides from the changelog class over one by one to this class in coming patches. That will leave the changelog class simpler and will centralize more of the filtering logic to repoview. I could not measure any performance difference. Differential Revision: https://phab.mercurial-scm.org/D7236

--- a/mercurial/repoview.py	Tue Nov 05 14:00:46 2019 -0800
+++ b/mercurial/repoview.py	Tue Nov 05 14:06:11 2019 -0800
@@ -221,6 +221,12 @@
 def wrapchangelog(unfichangelog, filteredrevs):
     cl = copy.copy(unfichangelog)
     cl.filteredrevs = filteredrevs
+
+    class filteredchangelog(cl.__class__):
+        pass
+
+    cl.__class__ = filteredchangelog
+
     return cl