libgit2 v1.9.0 #6991
ethomson
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libgit2 v1.9.0
#6991
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I think also the layout of |
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Oops, thank you. I will update this. |
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This is release v1.9.0, "Schwibbogen". As usual, it contains numerous bug fixes, compatibility improvements, and new features.
This is expected to be the final release in the libgit2 v1.x lineage. libgit2 v2.0 is expected to be the next version, with support for SHA256 moving to "supported" status (out of "experimental" status). This means that v2.0 will have API and ABI changes to support SHA256, as well as other breaking changes.
Major changes
Documentation improvements
We've launched a new website for our API reference docs at https://libgit2.org/docs/reference/main. To support this, we've updated the documentation to ensure that all APIs are well-documented, and added docurium-style specifiers to indicate more depth about the API surface.
We now also publish a JSON blob with the API structure and the documentation that may be helpful for binding authors.
TLS cipher updates
libgit2 has updated our TLS cipher selection to match the "compatibility" cipher suite settings as documented by Mozilla.
Blame improvements
The blame API now contains committer information and commit summaries for blame hunks, and the ability to get information about the line of text that was modified. In addition, a CLI blame command has been added so that the blame functionality can be benchmarked by our benchmark suite.
More CLI commands
libgit2 has added
blameandinitcommands, which have allowed for further benchmarking and several API improvements and git compatibility updates.Warning when configuring without SHA1DC
Users are encouraged to use SHA1DC, which is git's hash; users should not use SHA1 in the general case. Users will now be warned if they try to configure cmake with a SHA1 backend (
-DUSE_SHA1=...).Breaking changes
There are several ABI-breaking changes that integrators, particularly maintainers of bindings or FFI users, may want to be aware of.
Blame hunk structure updates (ABI breaking change)
There are numerous additions to the
git_blame_hunkstructure to accommodate more information about the blame process.Checkout strategy updates (ABI breaking change)
The values for
GIT_CHECKOUT_SAFEandGIT_CHECKOUT_NONEhave been updated.GIT_CHECKOUT_SAFEis now0; this was implicitly the default value (with the options constructors setting that as the checkout strategy). It is now the default if the checkout strategy is set to0. This allows for an overall code simplification in the library.Configuration entry member removal (ABI breaking change)
The
git_config_entrystructure no longer contains afreemember; this was an oversight as end-users should not try to free that structure.Configuration backend function changes (ABI breaking change)
git_config_backends should now returngit_config_backend_entryobjects instead ofgit_config_entryobjects. This allows backends to provide a mechanism to nicely free the configuration entries that they provide.update_refscallback for remotes (ABI breaking change)The
update_refscallback was added to thegit_remote_callbacksstructure to provide additional information about updated refs; in particular, thegit_refspecis included for more information about the remote ref. Theupdate_refscallback will be preferred over the now deprecatedupdate_tipscallback.What's Changed
New features
The
git_signature_default_from_envAPI will now produce a pair ofgit_signatures representing the author, and the committer, taking theGIT_AUTHOR_NAMEandGIT_COMMITTER_NAMEenvironment variables into account. Added by @u-quark in Use environment variables when creating signatures #6706packbuilder can now be interrupted from a callback. Added @roberth in Make packbuilder interruptible using progress callback #6874
libgit2 now claims to honor the
preciousObjectrepository extension. This extension indicates that the client will never delete objects (in other words, will not garbage collect). libgit2 has no functionality to remove objects, so it implicitly obeys this in all cases. Added by @ethomson in repo: support the preciousObjects extension #6886Push status will be reported even when a push fails. This is useful to give information from the server about possible updates, even when the overall status failed. Added by @yerseg in push: report a push status even the push has failed #6876
You can now generate a thin pack from a mempack instance using
git_mempack_write_thin_pack. Added by @roberth in Addgit_mempack_write_thin_pack#6875The new
LIBGIT2_VERSION_CHECKmacro will indicate whether the version of libgit2 being compiled against is at least the version specified. For example:#if LIBGIT2_VERSION_CHECK(1, 6, 3)is true for libgit2 version 1.6.3 or newer. In addition, the newLIBGIT2_VERSION_NUMBERmacro will return an integer version representing the libgit2 version number. For example, for version 1.6.3,LIBGIT2_VERSION_NUMBERwill evaluate to010603. Added by @HamedMasafi in Add LIBGIT2_VER_CHECK Macro for Version Comparison #6882Custom X509 certificates can be added to OpenSSL's certificate store using the
GIT_OPT_ADD_SSL_X509_CERToption. Added by @yerseg in ssl: ability to add raw X509 certs to the cert store #6877The libgit2 compatibility CLI now has a
git blamecommand. Added by @ethomson in Introduce a blame command #6907Remote callbacks now provide an
update_refscallback so that users can now get therefspecof the updated reference during push. This gives more complete information about the remote reference that was updated. Added by @ethomson in remote: add update_refs with git_refspec #6559An optional FIPS-compliant mode for hashing is now available; you can set
-DUSE_SHA256=OpenSSL-FIPSto enable it. Added by @marcind-dot in Add OpenSSL-FIPS option to USE_SHA256 CMake flag #6906The git-compatible CLI now supports the
git initcommand, which has been useful in identifying API improvements and incompatibilities with git. Added by @ethomson in CLI: introduceinitcommand #6984Consumers can now query more information about how libgit2 was compiled, and query the "backends" that libgit2 uses. Added by @ethomson in Allow consumers to query the "backends" that libgit2 was built with #6971
Bug fixes
git_hash_ctx_cleanupingit_odb_streamby @gensmusic in odb: conditional git_hash_ctx_cleanup in git_odb_stream #6836on_statuswhen using the http-parser backend by @civodul in http: Initialize ‘on_status’ when using the http-parser backend. #6870truncate_racily_cleanin index.c by @lstoppa in Leak in truncate_racily_clean in index.c #6884GIT_DIFF_FORMAT_PATCH_HEADERby @carlosmn in diff: print the file header on GIT_DIFF_FORMAT_PATCH_HEADER #6888git_object_short_idfails with core.abbrev string values by @lrm29 in object: git_object_short_id fails with core.abbrev string values #6944Security fixes
Code cleanups
freeptr fromgit_config_entryby @ethomson in config: removefreeptr fromgit_config_entry#6804GIT_WIN32an internal declaration by @ethomson in MakeGIT_WIN32an internal declaration #6940template_pathis specified by @ethomson in repo: don't require option whentemplate_pathis specified #6983Benchmarks
Build and CI improvements
Documentation improvements
git_odb_stream_readreturn value. by @ehuss in Fix docs for git_odb_stream_read return value. #6837merge_base_manyby @Caleb-T-Owens in Update documentation ofmerge_base_many#6927refdb_backenddocs by @ethomson in Documentation: update refdb_backend docs #6955git_libgit2_initby @ethomson in docs: remind people aboutgit_libgit2_init#6958Git compatibility fixes
.gitattributesand.gitignorefiles to 100 MiB by @csware in Limit .gitattributes and .gitignore files to 100 MiB #6834Dependency updates
Other changes
New Contributors
merge_base_many#6927Full Changelog: v1.8.4...v1.9.0
This discussion was created from the release libgit2 v1.9.0.
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