libgit2 v1.4.0

This is release v1.4.0, "Fisematenten". This release includes several new features and bugfixes, improves compatibility with git, and begins preparation for SHA256 support in a future release.

What's Changed

New features

• diff: update rename limit to 1000 to match git's behavior by @ethomson in #6092
• odb: support checking for object existence without refresh by @joshtriplett in #6107
• object: provide a low-level mechanism to validate whether a raw object is valid (git_object_rawcontent_is_valid) by @ethomson in #6128
• blob: provide a function to identify binary content by @ethomson in #6142
• status: add rename_threshold to git_status_options. by @arroz in #6158
• remote: support http.followRedirects (false and initial) and follow initial redirects by default by @ethomson in #6175
• remote: support scp style paths with ports ([git@github.com:22]:libgit2/libgit2) by @ethomson in #6167
• win32: update git for windows configuration file location compatibility by @csware in #6151 and @ethomson in #6180
• refs: speed up packed reference lookups when packed refs are sorted by @ccstolley in #6138
• merge: support zdiff3 conflict styles by @ethomson in #6195
• remote: support fetching by object id (using "+oid:ref" refspec syntax) by @ethomson in #6203
• merge: callers can specify virtual-base building behavior and to optionally accept conflict markers as a resolution by @boretrk in #6204

Deprecated APIs

• git_index_checksum is deprecated; this information is now internal to the library and there is no replacement
• git_indexer_hash is deprecated; callers should use git_indexer_name to retrieve the filename
• git_packbuilder_hash is deprecated; callers should use git_packbuilder_name to retrieve the filename

ABI changes

• git_fetch_options now includes the follow_redirects value
• git_push_options now includes the follow_redirects value
• git_status_options now includes the rename_threshold value
• git_transport contains several changed function pointer signatures

Bug fixes

• Fix a gcc 11 warning in src/threadstate.c by @lhchavez in #6115
• Fix a gcc 11 warning in src/thread.h by @lhchavez in #6116
• cmake: re-enable WinHTTP by @ethomson in #6120
• Fix repo init when template dir is non-existent by @ammgws in #6106
• cmake: use project-specific root variable instead of CMAKE_SOURCE_DIR by @Qix- in #6146
• Better revparse compatibility for at time notation by @yoichi in #6095
• remotes: fix insteadOf/pushInsteadOf handling by @mkhl in #6101
• git_commit_summary: ignore lines with spaces by @stforek in #6125
• Config parsing by @csware in #6124
• config: handle empty conditional in includeIf by @ethomson in #6165
• #6154 git_status_list_new case insensitive fix by @arroz in #6159
• futils_mktmp: don't use umask by @boretrk in #6178
• revparse: support bare '@' by @ethomson in #6196
• odb: check for write failures by @ethomson in #6206
• push: Prepare pack before sending pack header. by @ccstolley in #6205
• mktmp: improve our temp file creation by @ethomson in #6207
• diff_file: fix crash if size of diffed file changes in workdir by @jorio in #6208
• merge: comment conflicts lines in MERGE_MSG by @ethomson in #6197
• Fix crashes in example programs on Windows (sprintf_s not compatible with snprintf) by @apnadkarni in #6212

Code cleanups

• Introduce git_remote_connect_options by @ethomson in #6161
• hash: separate hashes and git_oid by @ethomson in #6082
• git_buf: now a public-only API (git_str is our internal API) by @ethomson in #6078
• cmake: cleanups and consistency by @ethomson in #6084
• path: refactor utility path functions by @ethomson in #6104
• str: git_str_free is never a function by @ethomson in #6111
• cmake refactorings by @ethomson in #6112
• Add missing-declarations warning globally by @ethomson in #6113
• cmake: further refactorings by @ethomson in #6114
• tag: set validity to 0 by default by @ethomson in #6119
• util: minor cleanup and refactoring to the date class by @ethomson in #6121
• Minor code cleanups by @ethomson in #6122
• Fix a long long that crept past by @NattyNarwhal in #6094
• remote: refactor insteadof application by @ethomson in #6147
• ntmlclient: fix linking with libressl by @boretrk in #6157
• c99: change single bit flags to unsigned by @boretrk in #6179
• Fix typos by @rex4539 in #6164
• diff_driver: split global_drivers array into separate elements by @boretrk in #6184
• cmake: disable some gnu extensions by @boretrk in #6185
• Disabling setting CMAKE_FIND_LIBRARY_SUFFIXES on Apple platforms. by @arroz in #6153
• C90: add inline macro to xdiff and mbedtls by @boretrk in #6200
• SHA256: early preparation by @ethomson in #6192

CI improvements

• tests: rename test runner to libgit2_tests, build option to BUILD_TESTS. by @ethomson in #6083
• ci: only update docs on push by @ethomson in #6108
• Pedantic header test by @boretrk in #6086
• ci: build with ssh on nightly by @ethomson in #6148
• ci: improve the name in CI runs by @ethomson in #6198

Documentation improvements

• Document that git_odb is thread-safe by @joshtriplett in #6109
• Improve documentation by @punkymaniac in #6168

Other changes

• libgit2_clar is now libgit2_tests by @mkhl in #6100
• Remove PSGit from Language Bindings section of README by @cestrand in #6150
• COPYING: remove regex copyright, add PCRE copyright by @ethomson in #6187
• meta: add a release configuration file by @ethomson in #6211

New Contributors

• @mkhl made their first contribution in #6100
• @ammgws made their first contribution in #6106
• @yoichi made their first contribution in #6095
• @stforek made their first contribution in #6125
• @cestrand made their first contribution in #6150
• @rex4539 made their first contribution in #6164
• @jorio made their first contribution in #6208

Full Changelog: v1.3.0...v1.4.0