largefiles: mark lfile as added in lfdirstate when the standin is added This is an alternative solution to the problem addressed by f72d73937853. This implementation has the advantage that it doesn't mark clean largefiles as normallookup. We can thus avoid repeated rehashing of all largefiles when f72d73937853 is backed out. This implementation use the existing 'lfmr' actions that 23fe278bde43 introduced for handling another part of the same cases.

tests: add test coverage for lfdirstate invalidation of linear update f72d73937853 introduced a significant performance regression: All largefiles are marked 'normallookup' in lfdirstate by linear (or noop) updates and has to be rehashed by the next command. To avoid such regressions, keep an eye on the dirstate content after a plain 'hg up'.

test-subrepo-git: ignore global git config This was causing a test failure for people with company-wide settings. Still need a way to ignore local config.

tests/autodiff.py: explicitly only honor feature diffopts This test extension manages the opts it cares about on its own anyway.

cmdutil.changeset_printer: explicitly honor all diffopts This is used in hg log -p so the output is expected to be the same as that of hg diff.

export: explicitly honor all diffopts This is slightly more controversial than diff, but we hope that HGPLAIN=1 covers all the format-breaking ones. A possible alternative here that breaks BC is to honor all opts except the whitespace ones.

webcommands.annotate: explicitly only honor whitespace diffopts The whitespace ones are the only ones the annotate logic cares about anyway, so there's no visible impact.

filectx.parents: filter nullrev parent sooner We are going to introduce a linkrev-correction phases when computing parents. It will be more convenient to have the nullid parent filtered out earlier. I had to make a minimal adjustment to the rename handling logic to keep it functional. That logic have been documented in the process since it took me some time to check all the cases out.

context: catch FilteredRepoLookupError instead of RepoLookupError Now that we have a more specialised exception, lets use it when we meant to catch the more specialised case.

narrowmatcher: propagate the rel() method The full path is propagated to the original match object since this is often used directly for printing a file name to the user. This is cleaner than requiring each caller to join the prefix with the file name prior to calling it, and will lead to not having to pass the prefix around separately. It is also consistent with the bad() and abs() methods in terms of the required input. The uipath() method now inherits this path building property. There is no visible change in path style for rel() because it ultimately calls util.pathto(), which returns an os.sep based path. (The previous os.path.join() was violating the documented usage of util.pathto(), that its third parameter be '/' separated.) The doctest needed to be normalized to '/' separators to avoid test differences on Windows, now that a full path is returned for a short filename. The test changes are to drop globs that are no longer necessary when printing an absolute file in a subrepo, as returned from match.uipath(). Previously when os.path.join() was used to add the prefix, the absolute path to a file in a subrepo was printed with a mix of '/' and '\'. The absolute path for a file not in a subrepo, as returned from match.uipath(), is still purely '/' based.