obsolete: explicitly track folds inside the markers
We now record information to be able to recognize "fold" event from
obsolescence markers. To do so, we track the following pieces of information:
a) a fold ID. Unique to that fold (per successor),
b) the number of predecessors,
c) the index of the predecessor in that fold.
We will now be able to create an algorithm able to find "predecessorssets".
We now store this data in the generic "metadata" field of the markers.
Updating the format to have a more compact storage for this would be useful.
This way of tracking a fold through multiple markers could be applied to split
too. This would have two advantages:
1) We get a simpler format, since number of successors is limited to [0-1].
2) We can better deal with situations where only some of the split successors
are pushed to a remote repository.
We should look into the relevance of such a change before updating the on-disk
format.
note: unlike splits, folds do not have to deal with cases where only some of
the markers have been synchronized. As they all share the same successor
changesets, they are all relevant to the same nodes.
#require test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ import_checker="$TESTDIR"/../contrib/import-checker.py
$ cd "$TESTDIR"/..
There are a handful of cases here that require renaming a module so it
doesn't overlap with a stdlib module name. There are also some cycles
here that we should still endeavor to fix, and some cycles will be
hidden by deduplication algorithm in the cycle detector, so fixing
these may expose other cycles.
Known-bad files are excluded by -X as some of them would produce unstable
outputs, which should be fixed later.
$ testrepohg locate 'set:**.py or grep(r"^#!.*?python")' \
> 'tests/**.t' \
> -X hgweb.cgi \
> -X setup.py \
> -X contrib/debugshell.py \
> -X contrib/hgweb.fcgi \
> -X contrib/packaging/hg-docker \
> -X contrib/python-zstandard/ \
> -X contrib/win32/hgwebdir_wsgi.py \
> -X doc/gendoc.py \
> -X doc/hgmanpage.py \
> -X i18n/posplit \
> -X mercurial/thirdparty \
> -X tests/hypothesishelpers.py \
> -X tests/test-check-interfaces.py \
> -X tests/test-commit-interactive.t \
> -X tests/test-contrib-check-code.t \
> -X tests/test-demandimport.py \
> -X tests/test-extension.t \
> -X tests/test-hghave.t \
> -X tests/test-hgweb-auth.py \
> -X tests/test-hgweb-no-path-info.t \
> -X tests/test-hgweb-no-request-uri.t \
> -X tests/test-hgweb-non-interactive.t \
> -X tests/test-hook.t \
> -X tests/test-import.t \
> -X tests/test-imports-checker.t \
> -X tests/test-lock.py \
> -X tests/test-verify-repo-operations.py \
> | sed 's-\\-/-g' | "$PYTHON" "$import_checker" -