CRAN release v0.25.2

CHANGES

• Improved the build configuration script: if the system installation
  of libgit2 is to old, use the bundled libgit2 instead of raising an
  error.

BUG FIXES

• Fixed the broken build on Solaris.

CRAN release v0.25.1

CHANGES

• Updated the bundled libgit2 source code to version '0.28.1'.

• Added additional parameters to the 'diff' function to control the
  output, see the documentation.

• Added getPass option to the password argument in 'cred_user_pass'
  (Annie Wang in PR #383)

• Changed the 'print' functions to return its argument invisibly.

• Changed the 'git_config_files' function to return a 'data.frame'

• Changed the 'ahead_behind' function to accept a tag or a branch for
  the local and upstrean commit.

• Changed the 'descendent_of' function to accept a tag or a branch for
  the 'commit' and 'ancestor' commit.

BUG FIXES

• Fixed memory protection errors in the git2r C source code reported
  by the 'rchk' tool.

• Fixed listing of 'commits' from a shallow repository.

• Fixed the configuration script to include the missing macro
  'AM_ICONV'.

• Fixed a significant warning from 'R CMD check'

CRAN release v0.24.0

This is a bug-fix release.

BUG FIXES

• Fixed memory protection errors in the git2r C source code reported
  by the 'rchk' tool.

• Raise an error if the path argument to the 'hashfile' function is
  NA.

CRAN release v0.23.0

IMPROVEMENTS

• Updated the bundled libgit2 source code to v0.27.3 (504bd54).

BREAKING CHANGE

• On macOS, git2r no longer enables SSH transport by default. This is
  due to the complexity to build the dependencies for SSH transport in
  an R package when macOS no longer ships the OpenSSL headers.
  However, you can install git2r from source on macOS (see the 'R
  Installation and Administration' manual) with SSH transport enabled
  if you first install the libgit2 library, for example, using the
  Homebrew package manager. Another possibility is to let the build
  configuration automatically download the libgit2 library from the
  Homebrew package manager with:

  install.packages('git2r', type='source', configure.vars='autobrew=yes')

CRAN release v0.22.1

NEW FEATURES

• Added the 'git_config_files' method to locate configuration files.

• Added the 'stash_pop' method to apply a single stashed state from
  the stash list and remove it from the list if successful.

• Added the 'stash_apply' method to apply a single stashed state from
  the stash list.

IMPROVEMENTS

• Updated the bundled libgit2 source code to v0.27.2 (8d36dc6).

• git2r can now build against a system installation of libgit2
  (Elliott Sales de Andrade in PR #345, #344 and #336).

• Refactoring of the configuration scripts to use a prebuilt libgit2
  on macOS and Windows (Thanks Jeroen).

• Ensure that git2r writes the config file to the correct location on
  Windows (John Blischak in PR #320).

• Better default location to find ssh keys in 'cred_ssh_key()' (Ian
  Lyttle in PR #317).

BUG FIXES

• If a merge results in no change, the returned 'git_merge_result' now returns
  'FALSE' for 'fast_forward' and 'conflicts' and 'NA' for 'sha'. Previously it
  returned 'logical(0)' for 'fast_forward' and 'conflicts' and 'character(0)'
  for 'sha'.

BREAKING CHANGES

• Changed from S4 classes to S3 classes to simplify the design and
  facilitate future development.

• Removed the trailing slash from the directory name when reporting
  repository path or workdir.

• Removed the 'libgit2_sha' method. Use the 'libgit2_version' method
  instead.

• Changed the 'stash_drop' argument 'index' from zero-based to
  one-based i.e. use index = 1 to drop the first stash.

git2r v0.22.0 RC2

NEW FEATURES

• Added the 'git_config_files' method to locate configuration files.

IMPROVEMENTS

• Updated the bundled libgit2 source code to v0.27.2 (8d36dc6).

• git2r can now build against a system installation of libgit2
  (Elliott Sales de Andrade in PR #345, #344 and #336).

• Refactoring of the configuration scripts to use a prebuilt libgit2
  on macOS and Windows (Thanks Jeroen).

• Ensure that git2r writes the config file to the correct location on
  Windows (John Blischak in PR #320).

• Better default location to find ssh keys in 'cred_ssh_key()' (Ian
  Lyttle in PR #317).

BUG FIXES

• If a merge results in no change, the returned 'git_merge_result' now returns
  'FALSE' for 'fast_forward' and 'conflicts' and 'NA' for 'sha'. Previously it
  returned 'logical(0)' for 'fast_forward' and 'conflicts' and 'character(0)'
  for 'sha'.

BREAKING CHANGES

• Changed from S4 classes to S3 classes to simplify the design and
  facilitate future development.

• Removed the trailing slash from the directory name when reporting
  repository path or workdir.

• Removed the 'libgit2_sha' method. Use the 'libgit2_version' method
  instead.

git2r v0.22.0 RC1

NEW FEATURES

• Added the 'git_config_files' method to locate configuration files.

IMPROVEMENTS

• Updated the bundled libgit2 source code to v0.27.2 (8d36dc6).

• git2r can now build against a system installation of libgit2
  (Elliott Sales de Andrade in PR #345, #344 and #336).

• Refactoring of the configuration scripts to use a prebuilt libgit2
  on macOS and Windows (Thanks Jeroen).

• Ensure that git2r writes the config file to the correct location on
  Windows (John Blischak in PR #320).

• Better default location to find ssh keys in 'cred_ssh_key()' (Ian
  Lyttle in PR #317).

BUG FIXES

• If a merge results in no change, the returned 'git_merge_result' now returns
  'FALSE' for 'fast_forward' and 'conflicts' and 'NA' for 'sha'. Previously it
  returned 'logical(0)' for 'fast_forward' and 'conflicts' and 'character(0)'
  for 'sha'.

BREAKING CHANGES

• Changed from S4 classes to S3 classes to simplify the design and
  facilitate future development.

• Removed the trailing slash from the directory name when reporting
  repository path or workdir.

• Removed the 'libgit2_sha' method. Use the 'libgit2_version' method
  instead.

CRAN release v0.21.0

• Added methods 'odb_blobs' and 'odb_objects' with missing repository
  signature. Internally, they use 'getwd' and 'discover_repository' to
  open a repository.

BUG FIXES

• The bundled libgit2 source code has been reverted to libgit2 v0.26.0
  (15e1193) from 14 June 2017 (same as in git2r v0.19.0) to fix memory
  alignment errors.

CRAN release v0.20.0

IMPROVEMENTS

• Updated the bundled libgit2 source code to commit (fa8cf14) from 16
  December 2017.

• Improvements to the build configuration script.

BUG FIXES

• Fixed the internal callback for remote host authentication from
  hanging indefinitely when querying an ssh-agent for
  credentials. Now, the callback signals an error instead of trying
  again if the authentication failed the first time.

CRAN release v0.19.0

IMPROVEMENTS

• Updated the bundled libgit2 source code to commit (15e1193)
  (v0.26.0) from 14 June 2017.

• Added 'checkout' argument to 'clone()'. Allows to control whether
  checkout of HEAD is performed after the clone is complete. Setting
  'checkout=FALSE' has similar effect as the git command line option
  '--no-checkout'. Andrzej K. Oles in #282.

BUG FIXES

• Fixed memory protection errors in the git2r C source code reported
  by the 'rchk' tool.

• Added missing calls to 'R_forceSymbols' and 'R_useDynamicSymbols' in
  the C init function.

• Enable argument 'all' to commit multiple modified (or deleted)
  files. John Blischak in #283

• Changed the configure script to determine the architecture of the
  machine earlier in order to fix an unsupported architecture error
  encountered on CentOS (#268, #288).