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v0.21 + 1
------
* 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)
* 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.
* 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)
* The git_transport structure definition has moved into the sys/transport.h
file.
* 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.
* 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.
* The git_transport_register function no longer takes a priority and takes
a URL scheme name (eg "http") instead of a prefix like "http://"
* The git_remote_set_transport function now sets a transport factory function,
rather than a pre-existing transport instance.
* 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, git_transport_ssh_with_paths.
* 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_remote_supported_url() has been removed as it has become
essentially useless with rsync-style ssh paths.
* The git_clone_options struct no longer provides the ignore_cert_errors or
remote_name members for remote customization.
Instead, the git_clone_options struct has two new members, remote_cb and
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.
The remote_callbacks member has been preserved for convenience, although it
is not used when a remote creation callback is supplied.
* The git_clone_options struct now provides repository_cb and
repository_cb_payload to allow the user to create a repository with
custom options.
* The option to ignore certificate errors via git_remote_cert_check()
is no longer present. Instead, git_remote_callbacks has gained a new
entry which lets the user perform their own certificate checks.
* git_clone_into and git_clone_local_into have been removed from the
public API in favour of git_clone callbacks
* 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_download and 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.
* Introduce git_merge_bases() and the git_oidarray type to expose all
merge bases between two commits.
* Introduce git_merge_bases_many() to expose all merge bases between
multiple commits.
* git_merge_head is now git_annotated_commit, to better reflect its usage
for multiple functions (including rebase)
* 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.
* Introduce git_note_author() and git_note_committer() to get the author
and committer information on a git_note, respectively.
* The THREADSAFE option to build libgit2 with threading support has
been flipped to be on by default.
* The context_lines and interhunk_lines fields in git_diff_options are
now uint32_t instead of 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.
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