libgit2/libgit2 v0.27.0

libgit2 v0.27.0

on GitHub

This is the first release of the v0.27 series, "Stadtrandsiedlung". The changelog follows.

Changes or improvements

• Improved p_unlink in posix_w32.c to try and make a file writable
  before sleeping in the retry loop to prevent unnecessary calls to sleep.

• The CMake build infrastructure has been improved to speed up building time.

• A new CMake option "-DUSE_HTTPS=" makes it possible to explicitly
  choose an HTTP backend.

• A new CMake option "-DSHA1_BACKEND=" makes it possible to explicitly
  choose an SHA1 backend. The collision-detecting backend is now the default.

• A new CMake option "-DUSE_BUNDLED_ZLIB" makes it possible to explicitly use
  the bundled zlib library.

• A new CMake option "-DENABLE_REPRODUCIBLE_BUILDS" makes it possible to
  generate a reproducible static archive. This requires support from your
  toolchain.

• The minimum required CMake version has been bumped to 2.8.11.

• Writing to a configuration file now preserves the case of the key given by the
  caller for the case-insensitive portions of the key (existing sections are
  used even if they don't match).

• We now support conditional includes in configuration files.

• Fix for handling re-reading of configuration files with includes.

• Fix for reading patches which contain exact renames only.

• Fix for reading patches with whitespace in the compared files' paths.

• We will now fill FETCH_HEAD from all passed refspecs instead of overwriting
  with the last one.

• There is a new diff option, GIT_DIFF_INDENT_HEURISTIC which activates a
  heuristic which takes into account whitespace and indentation in order to
  produce better diffs when dealing with ambiguous diff hunks.

• Fix for pattern-based ignore rules where files ignored by a rule cannot be
  un-ignored by another rule.

• Sockets opened by libgit2 are now being closed on exec(3) if the platform
  supports it.

• Fix for peeling annotated tags from packed-refs files.

• Fix reading huge loose objects from the object database.

• Fix files not being treated as modified when only the file mode has changed.

• We now explicitly reject adding submodules to the index via
  git_index_add_frombuffer.

• Fix handling of GIT_DIFF_FIND_RENAMES_FROM_REWRITES raising SIGABRT when
  one file has been deleted and another file has been rewritten.

• Fix for WinHTTP not properly handling NTLM and Negotiate challenges.

• When using SSH-based transports, we now repeatedly ask for the passphrase to
  decrypt the private key in case a wrong passphrase is being provided.

• When generating conflict markers, they will now use the same line endings as
  the rest of the file.

API additions

• The git_merge_file_options structure now contains a new setting,
  marker_size. This allows users to set the size of markers that
  delineate the sides of merged files in the output conflict file.
  By default this is 7 (GIT_MERGE_CONFLICT_MARKER_SIZE), which
  produces output markers like <<<<<<< and >>>>>>>.

• git_remote_create_detached() creates a remote that is not associated
  to any repository (and does not apply configuration like 'insteadof' rules).
  This is mostly useful for e.g. emulating git ls-remote behavior.

• git_diff_patchid() lets you generate patch IDs for diffs.

• git_status_options now has an additional field baseline to allow creating
  status lists against different trees.

• New family of functions to allow creating notes for a specific notes commit
  instead of for a notes reference.

• New family of functions to allow parsing message trailers. This API is still
  experimental and may change in future releases.

Breaking API changes

• Signatures now distinguish between +0000 and -0000 UTC offsets.

• The certificate check callback in the WinHTTP transport will now receive the
  message_cb_payload instead of the cred_acquire_payload.

• We are now reading symlinked directories under .git/refs.

• We now refuse creating branches named "HEAD".

• We now refuse reading and writing all-zero object IDs into the
  object database.

• We now read the effective user's configuration file instead of the real user's
  configuration in case libgit2 runs as part of a setuid binary.

• The git_odb_open_rstream function and its readstream callback in the
  git_odb_backend interface have changed their signatures to allow providing
  the object's size and type to the caller.