This is the final part required for the stage 4 implementation of SHA-256. The beginning part of this series is mostly final test fixes, and should be straightforward. Next are two patches that are required to fix the remaining SHA-256 incompatibilities in our codebase, both of which were necessitated by recent changes. After that, the meat of the series: support for reading extensions.objectFormat, removal of the compile-time option, and some tests. We introduce a knob to control the testsuite and a wire-in for CI so we don't regress things in the future, and at the end, some docs. The final patch here is the promised cleanup for test_oid_init in various places in our codebase. Note that SHA-256 repositories don't currently interoperate with SHA-1 repositories. I'm working on additional patches for the pieces required to implement that and full stage 1, 2, and 3 support, which will be in future series. However, it is possible to have a full SHA-256 repository that is fully functional after this series. I refer the reader to Documentation/technical/hash-function-transition.txt for the details of the different stages. I do plan to provide a shell-based tool for easier conversion of repositories with submodules at some point in the future, but all the pieces required are already built into fast-import and fast-export. I would like to thank everyone who's contributed to the SHA-256 work over the years with patches, review, documentation, suggestions, and other contributions. I could not possibly name all of the contributors here, so I won't try. None of this work could have been done without all your help. I plan to take a brief hiatus from more SHA-256 work after this and work on some other Git- and non-Git-related projects, but I'll probably resume at some point before year's end. I'm happy to provide the in-progress work for next steps if people are interested. I fully expect this series won't be picked up until after the release, so please feel free to focus on release-related activities for the moment. Johannes Schindelin (1): t3404: prepare 'short SHA-1 collision' tests for SHA-256 brian m. carlson (37): t: make test-bloom initialize repository t1001: use $ZERO_OID t3305: make hash agnostic t6100: make hash size independent t6101: make hash size independent t6301: make hash size independent t6500: specify test values for SHA-256 t6501: avoid hard-coded objects t7003: compute appropriate length constant t7063: make hash size independent t7201: abstract away SHA-1-specific constants t7102: abstract away SHA-1-specific constants t7400: make hash size independent t7405: make hash size independent t7506: avoid checking for SHA-1-specific constants t7508: use $ZERO_OID instead of hard-coded constant t8002: make hash size independent t8003: make hash size independent t8011: make hash size independent t9300: abstract away SHA-1-specific constants t9300: use $ZERO_OID instead of hard-coded object ID t9301: make hash size independent t9350: make hash size independent t9500: ensure that algorithm info is preserved in config t9700: make hash size independent t5308: make test work with SHA-256 t0410: mark test with SHA1 prerequisite http-fetch: set up git directory before parsing pack hashes builtin/verify-pack: implement an --object-format option setup: add support for reading extensions.objectformat Enable SHA-256 support by default t: add test_oid option to select hash algorithm t: allow testing different hash algorithms via environment t: make SHA1 prerequisite depend on default hash ci: run tests with SHA-256 docs: add documentation for extensions.objectFormat t: remove test_oid_init in tests Documentation/config.txt | 2 + Documentation/config/extensions.txt | 7 ++ builtin/init-db.c | 5 - builtin/verify-pack.c | 25 ++-- ci/run-build-and-tests.sh | 1 + config.mak.dev | 2 - http-fetch.c | 4 +- repository.c | 4 - setup.c | 12 +- t/helper/test-bloom.c | 2 + t/lib-pack.sh | 11 +- t/lib-submodule-update.sh | 1 - t/t0000-basic.sh | 15 ++- t/t0001-init.sh | 31 +++++ t/t0410-partial-clone.sh | 2 +- t/t1006-cat-file.sh | 2 - t/t1050-large.sh | 1 - t/t1091-sparse-checkout-builtin.sh | 4 +- t/t1410-reflog.sh | 1 - t/t1450-fsck.sh | 1 - t/t1500-rev-parse.sh | 1 - t/t3305-notes-fanout.sh | 2 +- t/t3308-notes-merge.sh | 1 - t/t3404-rebase-interactive.sh | 49 ++++++-- t/t3600-rm.sh | 1 - t/t3800-mktag.sh | 1 - t/t4002-diff-basic.sh | 2 - t/t4027-diff-submodule.sh | 1 - t/t4134-apply-submodule.sh | 1 - t/t4200-rerere.sh | 1 - t/t4211-line-log.sh | 1 - t/t5300-pack-object.sh | 3 +- t/t5302-pack-index.sh | 1 - t/t5308-pack-detect-duplicates.sh | 20 ++-- t/t5313-pack-bounds-checks.sh | 1 - t/t5318-commit-graph.sh | 3 +- t/t5319-multi-pack-index.sh | 1 - t/t5324-split-commit-graph.sh | 1 - t/t5504-fetch-receive-strict.sh | 1 - t/t5530-upload-pack-error.sh | 1 - t/t5562-http-backend-content-length.sh | 1 - t/t5702-protocol-v2.sh | 3 +- t/t5703-upload-pack-ref-in-want.sh | 1 - t/t6006-rev-list-format.sh | 1 - t/t6100-rev-list-in-order.sh | 4 +- t/t6101-rev-parse-parents.sh | 2 +- t/t6301-for-each-ref-errors.sh | 2 +- t/t6500-gc.sh | 27 ++++- t/t6501-freshen-objects.sh | 14 +-- t/t7003-filter-branch.sh | 3 +- t/t7063-status-untracked-cache.sh | 155 +++++++++++++------------ t/t7102-reset.sh | 93 ++++++++------- t/t7201-co.sh | 5 +- t/t7400-submodule-basic.sh | 26 ++--- t/t7405-submodule-merge.sh | 4 +- t/t7506-status-submodule.sh | 12 +- t/t7508-status.sh | 2 +- t/t8002-blame.sh | 15 +-- t/t8003-blame-corner-cases.sh | 3 +- t/t8011-blame-split-file.sh | 2 +- t/t9300-fast-import.sh | 117 ++++++++++--------- t/t9301-fast-import-notes.sh | 13 +-- t/t9350-fast-export.sh | 15 ++- t/t9500-gitweb-standalone-no-errors.sh | 22 +++- t/t9700/test.pl | 6 +- t/test-lib-functions.sh | 16 ++- t/test-lib.sh | 6 +- 67 files changed, 472 insertions(+), 324 deletions(-) create mode 100644 Documentation/config/extensions.txt
