v0.22 + 1
Changes or improvements
Patience and minimal diff drivers can now be used for merges.
Merges can now ignore whitespace changes.
Updated binary identification in CRLF filtering to avoid false positives in UTF-8 files.
Rename and copy detection is enabled for small files.
Checkout can now handle an initial checkout of a repository, making
GIT_CHECKOUT_SAFE_CREATEunnecessary for users of clone.
The signature parameter in the ref-modifying functions has been removed. Use
git_repository_ident()to override the signature to be used.
The local transport now auto-scales the number of threads to use when creating the packfile instead of sticking to one.
Reference renaming now uses the right id for the old value.
The annotated version of branch creation, HEAD detaching and reset allow for specifying the expression from the user to be put into the reflog.
GIT_EUNMERGEDwhen you attempt to commit with unstaged changes.
Parsing and retrieving a configuration value as a path is exposed via
git_repository_ident()serve to set and query which identity will be used when writing to the reflog.
git_config_entry_free()frees a config entry.
git_config_get_string_buf()provides a way to safely retrieve a string from a non-snapshot configuration.
git_annotated_commit_from_revspec()allows to get an annotated commit from an extended sha synatx string.
git_reset_from_annotated()allow for the caller to provide an annotated commit through which they can control what expression is put into the reflog as the source/target.
git_index_add_frombuffer()can now create a blob from memory buffer and add it to the index which is attached to a repository.
Breaking API changes
flagshas been renamed to
flagsis now an unsigned int. It was previously a
GIT_CHECKOUT_SAFE_CREATEhas been removed. Most users will generally be able to switch to
GIT_CHECKOUT_SAFE, but if you require missing file handling during checkout, you may now use
GIT_CHECKOUT_SAFE | GIT_CHECKOUT_RECREATE_MISSING.
git_submodule_update_optionsstructures no longer have a
The following functions have removed the signature and/or log message parameters in favour of git-emulating ones.
git_config_get_entry()now gives back a ref-counted
git_config_entry. You must free it when you no longer need it.
git_config_get_string()will return an error if used on a non-snapshot configuration, as there can be no guarantee that the returned pointer is valid.
git_note_default_ref()now uses a
git_bufto return the string, as the string is otherwise not guaranteed to stay allocated.
GIT_REBASE_NO_OPERATIONif it is called immediately after creating a rebase session but before you have applied the first patch.
git_rebase_optionsnow contains an optional pointer to
git_checkout_optionsthat will be used for functions that modify the working directory, namely
git_checkout_abort. As a result,
git_rebase_opennow also takes a
git_rebase_optionsand only the
git_rebase_openfunctions take a
git_rebase_options, where they will persist the options to subsequent
Changes or improvements
git_signature_new()now requires a non-empty email address.
Use CommonCrypto libraries for SHA-1 calculation on Mac OS X.
Disable SSL compression and SSLv2 and SSLv3 ciphers in favor of TLSv1 in OpenSSL.
The fetch behavior of remotes with autotag set to
GIT_REMOTE_DOWNLOAD_TAGS_ALLhas been changed to match git 1.9.0 and later. In this mode, libgit2 now fetches all tags in addition to whatever else needs to be fetched.
git_checkout()now handles case-changing renames correctly on case-insensitive filesystems; for example renaming "readme" to "README".
The search for libssh2 is now done via pkg-config instead of a custom search of a few directories.
Add support for core.protectHFS and core.protectNTFS. Add more validation for filenames which we write such as references.
The local transport now generates textual progress output like git-upload-pack does ("counting objects").
git_checkout_index()can now check out an in-memory index that is not necessarily the repository's index, so you may check out an index that was produced by git_merge and friends while retaining the cached information.
Remove the default timeout for receiving / sending data over HTTP using the WinHTTP transport layer.
Add SPNEGO (Kerberos) authentication using GSSAPI on Unix systems.
Provide built-in objects for the empty blob (e69de29) and empty tree (4b825dc) objects.
The index' tree cache is now filled upon read-tree and write-tree and the cache is written to disk.
LF -> CRLF filter refuses to handle mixed-EOL files
LF -> CRLF filter now runs when * text = auto (with Git for Windows 1.9.4)
File unlocks are atomic again via rename. Read-only files on Windows are made read-write if necessary.
Share open packfiles across repositories to share descriptors and mmaps.
Use a map for the treebuilder, making insertion O(1)
The build system now accepts an option EMBED_SSH_PATH which when set tells it to include a copy of libssh2 at the given location. This is enabled for MSVC.
Add support for refspecs with the asterisk in the middle of a pattern.
Fetching now performs opportunistic updates. To achieve this, we introduce a difference between active and passive refspecs, which make
git_remote_fetch()to take a list of resfpecs to be the active list, similarly to how git fetch accepts a list on the command-line.
The THREADSAFE option to build libgit2 with threading support has been flipped to be on by default.
The remote object has learnt to prune remote-tracking branches. If the remote is configured to do so, this will happen via
git_remote_fetch(). You can also call
git_remote_prune()after connecting or fetching to perform the prune.
git_buf_text_contains_nul()for consumers to perform binary detection on a git_buf.
git_branch_upstream_remote()has been introduced to provide the branch..remote configuration value.
git_describe_workdir()to provide a description of the current commit (and working tree, respectively) based on the nearest tag or reference
git_oidarraytype to expose all merge bases between two commits.
git_merge_bases_many()to expose all merge bases between multiple commits.
Introduce rebase functionality (using the merge algorithm only). Introduce
git_rebase_init()to begin a new rebase session,
git_rebase_open()to open an in-progress rebase session,
git_rebase_commit()to commit the current rebase operation,
git_rebase_next()to apply the next rebase operation,
git_rebase_abort()to abort an in-progress rebase and
git_rebase_finish()to complete a rebase operation.
git_note_committer()to get the author and committer information on a
A factory function for ssh has been added which allows to change the path of the programs to execute for receive-pack and upload-pack on the server,
The ssh transport supports asking the remote host for accepted credential types as well as multiple challeges using a single connection. This requires to know which username you want to connect as, so this introduces the USERNAME credential type which the ssh transport will use to ask for the username.
GIT_EPEELerror code has been introduced when we cannot peel a tag to the requested object type; if the given object otherwise cannot be peeled,
GIT_REPOSITORY_INIT_RELATIVE_GITLINKto use relative paths when writing gitlinks, as is used by git core for submodules.
git_remote_prune()has been added. See above for description.
Introduce reference transactions, which allow multiple references to be locked at the same time and updates be queued. This also allows us to safely update a reflog with arbitrary contents, as we need to do for stash.
git_remote_is_valid_url()have been removed as they have become essentially useless with rsync-style ssh paths.
git_clone_local_into()have been removed from the public API in favour of
The option to ignore certificate errors via
git_remote_cert_check()is no longer present. Instead,
git_remote_callbackshas gained a new entry which lets the user perform their own certificate checks.
Breaking API changes
git_submodule_update()function was renamed to
git_submodule_update()is now used to provide functionalty similar to "git submodule update".
git_treebuilder_create()was renamed to
git_treebuilder_new()to better reflect it being a constructor rather than something which writes to disk.
git_treebuilder_create()) now takes a repository so that it can query repository configuration. Subsequently,
git_treebuilder_write()no longer takes a repository.
git_threads_shutdown()have been renamed to
git_libgit2_shutdown()to better explain what their purpose is, as it's grown to be more than just about threads.
git_libgit2_shutdown()now return the number of initializations of the library, so consumers may schedule work on the first initialization.
git_transport_register()function no longer takes a priority and takes a URL scheme name (eg "http") instead of a prefix like "http://"
git_index_reuc_entrycount()now return size_t instead of unsigned int.
git_diff_options are now
uint16_t. This allows to set them to
UINT_MAX, in effect asking for "infinite" context e.g. to iterate over all the unmodified lines of a diff.
git_status_file()now takes an exact path. Use
git_status_list_new()if pathspec searching is needed.
git_note_create()has changed the position of the notes reference name to match
git_remote_lookup()to bring it in line with the rest of the lookup functions.
git_remote_rename()now takes the repository and the remote's current name. Accepting a remote indicates we want to change it, which we only did partially. It is much clearer if we accept a name and no loaded objects are changed.
git_remote_delete()now accepts the repository and the remote's name instead of a loaded remote.
git_annotated_commit, to better reflect its usage for multiple functions (including rebase)
git_clone_optionsstruct no longer provides the
remote_namemembers for remote customization.
git_clone_optionsstruct has two new members,
remote_cb_payload, which allow the caller to completely override the remote creation process. If needed, the caller can use this callback to give their remote a name other than the default (origin) or disable cert checking.
remote_callbacksmember has been preserved for convenience, although it is not used when a remote creation callback is supplied.
git_clone_options struct now provides
repository_cb_payloadto allow the user to create a repository with custom options.
git_pushstruct to perform a push has been replaced with
git_remote_upload(). The refspecs and options are passed as a function argument.
git_push_update_tips()is now also
git_remote_update_tips()and the callbacks are in the same struct as the rest.
git_remote_set_transport()function now sets a transport factory function, rather than a pre-existing transport instance.
git_transportstructure definition has moved into the sys/transport.h file.
libgit2 no longer automatically sets the OpenSSL locking functions. This is not something which we can know to do. A last-resort convenience function is provided in sys/openssl.h,
git_openssl_set_locking()which can be used to set the locking.