cleanup: run pyupgrade on our source tree to clean up varying things Built with: hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**" - hgext/fsmonitor/pywatchman/**' | xargs pyupgrade --keep-percent-format --keep-extraneous-parens and then blackened. pyupgrade comes from https://github.com/asottile/pyupgrade with a patch to let me preserve extraneous parens (which we use for marking strings that shouldn't be translated), and lets us clean up a bunch of idioms that have cruftily accumulated over the years. # skip-blame no-op automated code cleanups Differential Revision: https://phab.mercurial-scm.org/D8255

--- a/hgext/largefiles/overrides.py	Fri Mar 06 10:52:44 2020 +0100
+++ b/hgext/largefiles/overrides.py	Fri Mar 06 13:27:41 2020 -0500
@@ -1564,11 +1564,11 @@
 def overriderollback(orig, ui, repo, **opts):
     with repo.wlock():
         before = repo.dirstate.parents()
-        orphans = set(
+        orphans = {
             f
             for f in repo.dirstate
             if lfutil.isstandin(f) and repo.dirstate[f] != b'r'
-        )
+        }
         result = orig(ui, repo, **opts)
         after = repo.dirstate.parents()
         if before == after: