What's cooking in git.git (Feb 2021, #01; Wed, 3)

What's cooking in git.git (Feb 2021, #01; Wed, 3)

[Junio C Hamano]

Here are the topics that have been cooking.  Commits prefixed with '-' are
only in 'seen' (formerly 'pu'---proposed updates) while commits prefixed
with '+' are in 'next'.  The ones marked with '.' do not appear in any of
the integration branches, but I am still holding onto them.

A bit more topics are in 'master' now.  Also for those of us who are
on 'next', Derrick's fixes on top of the corrected commit date
series may help incremental commit-graph updates.  Testing is
appreciated.  I have been shooting for parking any non-trivial topic
that has been reviewed positively in 'next' for about 7 calendar
days, which may have been a bit too aggressive (on the other hand,
trivial topofixes, clean-ups and doc updates do not have to wait all
that long).

Copies of the source code to Git live in many repositories, and the
following is a list of the ones I push into or their mirrors.  Some
repositories have only a subset of branches.

With maint, master, next, seen, todo:

	git://git.kernel.org/pub/scm/git/git.git/
	git://repo.or.cz/alt-git.git/
	https://kernel.googlesource.com/pub/scm/git/git/
	https://github.com/git/git/
	https://gitlab.com/git-vcs/git/

With all the integration branches and topics broken out:

	https://github.com/gitster/git/

Even though the preformatted documentation in HTML and man format
are not sources, they are published in these repositories for
convenience (replace "htmldocs" with "manpages" for the manual
pages):

	git://git.kernel.org/pub/scm/git/git-htmldocs.git/
	https://github.com/gitster/git-htmldocs.git/

Release tarballs are available at:

	https://www.kernel.org/pub/software/scm/git/

--------------------------------------------------
[Graduated to 'master']

* ab/fsck-doc-fix (2021-01-20) 1 commit
  (merged to 'next' on 2021-01-25 at e3db0fe96f)
 + fsck doc: remove ancient out-of-date diagnostics

 Documentation for "git fsck" lost stale bits that has become
 incorrect.


* ds/maintenance-prefetch-cleanup (2021-01-20) 2 commits
  (merged to 'next' on 2021-01-26 at 23efa6ebc3)
 + t7900: clean up some broken refs
 + maintenance: set log.excludeDecoration durin prefetch

 Test clean-up plus UI improvement by hiding extra refs that
 the prefetch task uses from "log --decorate" output.


* jk/peel-iterated-oid (2021-01-21) 1 commit
  (merged to 'next' on 2021-01-26 at 023758f4ee)
 + refs: switch peel_ref() to peel_iterated_oid()

 The peel_ref() API has been replaced with peel_iterated_oid().


* jk/run-command-use-shell-doc (2021-01-22) 1 commit
  (merged to 'next' on 2021-01-26 at f9df80d861)
 + run-command: document use_shell option

 The .use_shell flag in struct child_process that is passed to
 run_command() API has been clarified with a bit more documentation.


* js/skip-dashed-built-ins-from-config-mak (2021-01-21) 1 commit
  (merged to 'next' on 2021-01-26 at 2d727a37f9)
 + SKIP_DASHED_BUILT_INS: respect `config.mak`

 Build fix.


* jt/packfile-as-uri-doc (2021-01-20) 1 commit
  (merged to 'next' on 2021-01-26 at 50500a8982)
 + Doc: clarify contents of packfile sent as URI

 Doc fix for packfile URI feature.

--------------------------------------------------
[New Topics]

* ab/make-cleanup (2021-02-01) 6 commits
 - Makefile: add {program,xdiff,test,git}-objs & objects targets
 - Makefile: split OBJECTS into OBJECTS and GIT_OBJS
 - Makefile: sort OBJECTS assignment for subsequent change
 - Makefile: split up long OBJECTS line
 - Makefile: guard against TEST_OBJS in the environment
 - Makefile: remove "all" on "$(FUZZ_OBJS)"

 Reorganize Makefile to allow building git.o and other essential
 objects without extra stuff needed only for testing.


* ds/commit-graph-genno-fix (2021-02-01) 6 commits
  (merged to 'next' on 2021-02-03 at b3a9e11efb)
 + commit-graph: prepare commit graph
 + commit-graph: be extra careful about mixed generations
 + commit-graph: compute generations separately
 + commit-graph: validate layers for generation data
 + commit-graph: always parse before commit_graph_data_at()
 + commit-graph: use repo_parse_commit
 (this branch uses ak/corrected-commit-date; is tangled with ds/chunked-file-api and ds/merge-base-independent.)

 Fix incremental update of commit-graph file around corrected commit
 date data.

 Will merge to 'master'.


* jh/simple-ipc (2021-02-01) 13 commits
 - simple-ipc: add Unix domain socket implementation
 - unix-socket: do not call die in unix_stream_connect()
 - unix-socket: add no-chdir option to unix_stream_listen()
 - unix-socket: add options to unix_stream_listen()
 - unix-socket: elimiate static unix_stream_socket() helper function
 - simple-ipc: add t/helper/test-simple-ipc and t0052
 - simple-ipc: add win32 implementation
 - simple-ipc: design documentation for new IPC mechanism
 - pkt-line: accept additional options in read_packetized_to_strbuf()
 - pkt-line: (optionally) libify the packet readers
 - pkt-line: optionally skip the flush packet in write_packetized_from_buf()
 - pkt-line: add write_packetized_from_buf2() that takes scratch buffer
 - pkt-line: promote static buffer in packet_write_gently() to callers

 A simple IPC interface gets introduced to build services like
 fsmonitor on top.


* ab/pager-exit-log (2021-02-01) 4 commits
 - pager: properly log pager exit code when signalled
 - run-command: add braces for "if" block in wait_or_whine()
 - pager: test for exit code with and without SIGPIPE
 - pager: refactor wait_for_pager() function

 When a pager spawned by us exited, the trace log did not record its
 exit status correctly, which has been corrected.


* jk/complete-branch-force-delete (2021-02-03) 3 commits
  (merged to 'next' on 2021-02-03 at 6454bb89b5)
 + doc/git-branch: fix awkward wording for "-c"
 + completion: handle other variants of "branch -m"
 + completion: treat "branch -D" the same way as "branch -d"

 The command line completion (in contrib/) completed "git branch -d"
 with branch names, but "git branch -D" offered tagnames in addition,
 which has been corrected.  "git branch -M" had the same problem.

 Will merge to 'master'.


* ta/hash-function-transition-doc (2021-02-02) 6 commits
 - doc: use https links
 - doc hash-function-transition: move rationale upwards
 - doc hash-function-transition: fix incomplete sentence
 - doc hash-function-transition: use upper case consistently
 - doc hash-function-transition: use SHA-1 and SHA-256 consistently
 - doc hash-function-transition: fix asciidoc output

 Update formatting and grammar of the hash transition plan
 documentation, plus some updates.

 Except for [5/6] these look good.

--------------------------------------------------
[Stalled]

* fc/bash-completion-post-2.29 (2020-12-23) 4 commits
 . completion: bash: add correct suffix in variables
 . completion: bash: fix for multiple dash commands
 . completion: bash: fix for suboptions with value
 . completion: bash: fix prefix detection in branch.*

 Seems to break tests on Windows


* ss/submodule-add-in-c (2020-12-15) 3 commits
 . t7400: add test to check 'submodule add' for tracked paths
 . submodule: port submodule subcommand 'add' from shell to C
 . dir: change the scope of function 'directory_exists_in_index()'

 "git submodule add" being rewritten in C.

 Expecting a reroll.
 The patches are split incorrectly; part of 1/3 belongs to 2/3
 cf. <nycvar.QRO.7.76.6.2012190104140.56@tvgsbejvaqbjf.bet>
 It seems to introduce a segfault on 'seen'.
 cf. <xmqqft3xflw7.fsf@gitster.c.googlers.com>


* mt/grep-sparse-checkout (2020-12-06) 10 commits
 - t7817: do not depend on any specific default branch name
 - config: add setting to ignore sparsity patterns in some cmds
 - grep: honor sparse checkout patterns
 - config: correctly read worktree configs in submodules
 - config: make do_git_config_sequence receive a 'struct repository'
 - t/helper/test-config: unify exit labels
 - t/helper/test-config: diagnose missing arguments
 - t/helper/test-config: be consistent with exit codes
 - t1308-config-set: avoid false positives when using test-config
 - doc: grep: unify info on configuration variables
 (this branch is used by mt/rm-sparse-checkout.)

 "git grep" has been tweaked to be limited to the sparse checkout
 paths.

 Break out and fast-track bugfix from the remainder of the topic.
 cf. <CABPp-BFkACtF6LHkFJNt9dTOmwfQbf8ZO=BTrPYwPSmbqc9+hg@mail.gmail.com>


* mt/rm-sparse-checkout (2020-12-08) 1 commit
 - rm: honor sparse checkout patterns
 (this branch uses mt/grep-sparse-checkout.)

 "git rm" follows suit to "git grep" to ignore paths outside the
 sparsity pattern when the sparse checkout feature is in use.

 Need to wait for how these fit in larger picture.
 cf. <CABPp-BGMX3wb7LiS1HkJpGveoW3J1oR0vVHbKTF5+qYLRF+59g@mail.gmail.com>
 cf. <CABPp-BFkACtF6LHkFJNt9dTOmwfQbf8ZO=BTrPYwPSmbqc9+hg@mail.gmail.com>


* jk/symlinked-dotgitx-files (2020-10-23) 9 commits
 - docs: document symlink restrictions for .git* files
 - fsck: complain when .gitattributes or .gitignore is a symlink
 - verify_path(): disallow symlinks in .gitattributes and .gitignore
 - t0060: test obscured .gitattributes and .gitignore matching
 - t7450: test .gitmodules symlink matching against obscured names
 - t7450: test verify_path() handling of gitmodules
 - t7415: rename to expand scope
 - fsck_tree(): wrap some long lines
 - fsck_tree(): fix shadowed variable

 "git fsck" and the corresponding check done during the transport
 learned to ensure that in-tree files like `.gitignore` and
 `.gitattributes` are not symbolic links.

 It seems that there are real projects with .gitignore recorded as
 symlinks, which may need to loosen the fsck setting.  Do we need to
 introduce a class that is separate from symlinked .gitmodules that
 has potential consequences that is more/less grave, so that these
 projects can opt out of the new checks?


* sm/curl-retry (2020-10-13) 3 commits
 - http: automatically retry some requests
 - replace CURLOPT_FILE With CURLOPT_WRITEDATA
 - remote-curl: add testing for intelligent retry for HTTP

 The http transport has been taught to retry a failed request that
 may reasonably be retried.

 Expecting a reroll.
 cf. <20201015000410.GB328643@google.com>
 cf. <CAM4o00eefXK2CJ_FxwwVPpBKL01JsJANf+SdjCtw_0NVV82L+Q@mail.gmail.com>


* sv/t7001-modernize (2020-09-25) 11 commits
 - t7001: move cleanup code from outside the tests into them
 - t7001: use `test` rather than `[`
 - t7001: use here-docs instead of echo
 - t7001: put each command on a separate line
 - t7001: use ': >' rather than 'touch'
 - t7001: change (cd <path> && git foo) to (git -C <path> foo)
 - t7001: remove whitespace after redirect operators
 - t7001: change the style for cd according to subshell
 - t7001: remove unnecessary blank lines
 - t7001: use TAB instead of spaces
 - t7001: convert tests from the old style to the current style

 Test script modernization.

 Expecting a reroll.
 cf. <20200925170256.11490-1-shubhunic@gmail.com>


* ar/fetch-transfer-ipversion (2020-09-16) 1 commit
 - config: option transfer.ipversion to set transport protocol version for network fetches

 Adds transfer.ipversion configuration variable.

 Needs more work.


* jc/war-on-dashed-git (2020-12-21) 2 commits
 - fixup??? git: catch an attempt to run "git-foo"
 - git: catch an attempt to run "git-foo"

 The first step to remove on-disk binaries for built-in subcommands
 by soliciting objections.

 On hold for now.


* mk/use-size-t-in-zlib (2018-10-15) 1 commit
 - zlib.c: use size_t for size

 The wrapper to call into zlib followed our long tradition to use
 "unsigned long" for sizes of regions in memory, which have been
 updated to use "size_t".


* ag/merge-strategies-in-c (2020-11-24) 13 commits
 - sequencer: use the "octopus" merge strategy without forking
 - sequencer: use the "resolve" strategy without forking
 - merge: use the "octopus" strategy without forking
 - merge: use the "resolve" strategy without forking
 - merge-octopus: rewrite in C
 - merge-recursive: move better_branch_name() to merge.c
 - merge-resolve: rewrite in C
 - merge-index: don't fork if the requested program is `git-merge-one-file'
 - merge-index: libify merge_one_path() and merge_all()
 - merge-one-file: rewrite in C
 - update-index: move add_cacheinfo() to read-cache.c
 - t6060: modify multiple files to expose a possible issue with merge-index
 - t6407: modernise tests

 The resolve and octopus merge strategy backends have been rewritten
 in C.

 Got enough review comments to get updated.

--------------------------------------------------
[Cooking]

* sg/t7800-difftool-robustify (2021-01-09) 1 commit
  (merged to 'next' on 2021-01-31 at fb72af8200)
 + t7800-difftool: don't accidentally match tmp dirs

 Test fix.

 Will merge to 'master'.


* ab/lose-grep-debug (2021-01-26) 1 commit
  (merged to 'next' on 2021-01-31 at 9b7548efce)
 + grep/log: remove hidden --debug and --grep-debug options

 Lose the debugging aid that may have been useful in the past, but
 no longer is, in the "grep" codepaths.

 Will merge to 'master'.


* ds/chunked-file-api (2021-01-27) 17 commits
 - chunk-format: add technical docs
 - chunk-format: restore duplicate chunk checks
 - midx: use 64-bit multiplication for chunk sizes
 - midx: use chunk-format read API
 - commit-graph: use chunk-format read API
 - chunk-format: create read chunk API
 - midx: use chunk-format API in write_midx_internal()
 - midx: drop chunk progress during write
 - midx: return success/failure in chunk write methods
 - midx: add num_large_offsets to write_midx_context
 - midx: add pack_perm to write_midx_context
 - midx: add entries to write_midx_context
 - midx: use context in write_midx_pack_names()
 - midx: rename pack_info to write_midx_context
 - commit-graph: use chunk-format write API
 - chunk-format: create chunk format write API
 - commit-graph: anonymize data in chunk_write_fn
 (this branch uses ak/corrected-commit-date; is tangled with ds/commit-graph-genno-fix and ds/merge-base-independent.)


* ds/merge-base-independent (2021-02-01) 5 commits
 - commit-reach: stale commits may prune generation further
 - commit-reach: use heuristic in remove_redundant()
 - commit-reach: move compare_commits_by_gen
 - commit-reach: use one walk in remove_redundant()
 - commit-reach: reduce requirements for remove_redundant()
 (this branch uses ak/corrected-commit-date; is tangled with ds/chunked-file-api and ds/commit-graph-genno-fix.)

 The code to implement "git merge-base --independent" was poorly
 done and was kept from the very beginning of the feature.


* jk/pretty-lazy-load-commit (2021-01-28) 1 commit
  (merged to 'next' on 2021-02-01 at acf7353a32)
 + pretty: lazy-load commit data when expanding user-format

 Some pretty-format specifiers do not need the data in commit object
 (e.g. "%H"), but we were over-eager to load and parse it, which has
 been made even lazier.

 Will merge to 'master'.


* jk/t0000-cleanups (2021-01-28) 4 commits
  (merged to 'next' on 2021-01-31 at 357f8fe097)
 + t0000: consistently use single quotes for outer tests
 + t0000: run cleaning test inside sub-test
 + t0000: run prereq tests inside sub-test
 + t0000: keep clean-up tests together

 Code clean-up.

 Will merge to 'master'.


* jk/use-oid-pos (2021-01-28) 6 commits
  (merged to 'next' on 2021-01-31 at 10ccafb739)
 + oid_pos(): access table through const pointers
 + hash_pos(): convert to oid_pos()
 + rerere: use strmap to store rerere directories
 + rerere: tighten rr-cache dirname check
 + rerere: check dirname format while iterating rr_cache directory
 + commit_graft_pos(): take an oid instead of a bare hash

 Code clean-up to ensure our use of hashtables using object names as
 keys use the "struct object_id" objects, not the raw hash values.

 Will merge to 'master'.


* jk/weather-balloon-require-variadic-macro (2021-01-27) 1 commit
  (merged to 'next' on 2021-01-31 at 8d5207bd85)
 + git-compat-util: always enable variadic macros

 We've carried compatibility codepaths for compilers without
 variadic macros for quite some time, but the world may be ready for
 them to be removed.  Force compilation failure on exotic platforms
 where variadic macros are not available to find out who screams in
 such a way that we can easily revert if it turns out that the world
 is not yet ready.

 Will merge to 'master'.


* pb/ci-matrix-wo-shortcut (2021-01-27) 1 commit
  (merged to 'next' on 2021-01-31 at 2384693758)
 + ci: do not cancel all jobs of a matrix if one fails

 Our setting of GitHub CI test jobs were a bit too eager to give up
 once there is even one failure found.  Tweak the knob to allow
 other jobs keep running even when we see a failure, so that we can
 find more failures in a single run.

 Will merge to 'master'.


* sg/test-stress-jobs (2021-01-26) 1 commit
  (merged to 'next' on 2021-02-01 at 0b7aae84e3)
 + test-lib: prevent '--stress-jobs=X' from being ignored

 Test framework fix.

 Will merge to 'master'.


* hv/trailer-formatting (2021-01-30) 5 commits
 - SQUASH???
 - SQUASH: fix sparse error
 - ref-filter: use pretty.c logic for trailers
 - pretty.c: capture invalid trailer argument
 - pretty.c: refactor trailer logic to `format_set_trailers_options()`

 The logic to handle "trailer" related placeholders in the
 "--format=" mechanisms in the "log" family and "for-each-ref"
 family is getting unified.

 Expecting further work.


* jk/p5303-sed-portability-fix (2021-01-29) 1 commit
  (merged to 'next' on 2021-01-31 at 5f2957e738)
 + p5303: avoid sed GNU-ism

 A perf script was made more portable.

 Will merge to 'master'.


* pb/blame-funcname-range-userdiff (2021-01-30) 1 commit
  (merged to 'next' on 2021-01-31 at 107d10fe4f)
 + annotate-tests: quote variable expansions containing path names

 Test fix.

 Will merge to 'master'.


* sh/mergetool-hideresolved (2021-01-29) 3 commits
 - mergetool: add per-tool support and overrides for the hideResolved flag
 - mergetool: break setup_tool out into separate initialization function
 - mergetool: add hideResolved configuration

 "git mergetool" feeds three versions (base, local and remote) of
 a conflicted path unmodified.  The command learned to optionally
 prepare these files with unconflicted parts already resolved.

 Getting there.

 The interaction between configuration variables look somewhat iffy.


* tb/precompose-prefix-too (2021-02-03) 1 commit
 - MacOS: precompose_argv_prefix()

 When commands are started from a subdirectory, they may have to
 compare the path to the subdirectory (called prefix and found out
 from $(pwd)) with the tracked paths.  On macOS, $(pwd) and
 readdir() yield decomposed path, while the tracked paths are
 usually normalized to the precomposed form, causing mismatch.  This
 has been fixed by taking the same approach used to normalize the
 command line arguments.

 Will merge to 'next'.


* cm/rebase-i (2021-01-29) 9 commits
  (merged to 'next' on 2021-02-01 at 4f9aa6cec3)
 + doc/git-rebase: add documentation for fixup [-C|-c] options
 + rebase -i: teach --autosquash to work with amend!
 + t3437: test script for fixup [-C|-c] options in interactive rebase
 + rebase -i: add fixup [-C | -c] command
 + sequencer: use const variable for commit message comments
 + sequencer: pass todo_item to do_pick_commit()
 + rebase -i: comment out squash!/fixup! subjects from squash message
 + sequencer: factor out code to append squash message
 + rebase -i: only write fixup-message when it's needed

 "rebase -i" is getting cleaned up and also enhanced.

 Will merge to 'master'.


* ds/more-index-cleanups (2021-01-23) 9 commits
  (merged to 'next' on 2021-02-01 at bcdfa11e73)
 + t1092: test interesting sparse-checkout scenarios
 + test-lib: test_region looks for trace2 regions
 + sparse-checkout: load sparse-checkout patterns
 + name-hash: use trace2 regions for init
 + repository: add repo reference to index_state
 + fsmonitor: de-duplicate BUG()s around dirty bits
 + cache-tree: extract subtree_pos()
 + cache-tree: simplify verify_cache() prototype
 + cache-tree: clean up cache_tree_update()
 (this branch uses ds/cache-tree-basics.)

 Cleaning various codepaths up.

 Will merge to 'master'.


* rs/worktree-list-verbose (2021-01-30) 7 commits
  (merged to 'next' on 2021-02-01 at b57a6ce4c6)
 + worktree: teach `list` verbose mode
 + worktree: teach `list` to annotate prunable worktree
 + worktree: teach `list --porcelain` to annotate locked worktree
 + t2402: ensure locked worktree is properly cleaned up
 + worktree: teach worktree_lock_reason() to gently handle main worktree
 + worktree: teach worktree to lazy-load "prunable" reason
 + worktree: libify should_prune_worktree()

 `git worktree list` now annotates worktrees as prunable, shows
 locked and prunable attributes in --porcelain mode, and gained
 a --verbose option.

 Will merge to 'master'.
 cf. <CAPig+cTt-TyOR8kc6YvBVLpf-bgFdJ+FVYA2NvG_Vvn7tMbBkQ@mail.gmail.com>


* tb/geometric-repack (2021-01-20) 10 commits
 . builtin/repack.c: add '--geometric' option
 . builtin/repack.c: extract loose object handling
 . builtin/pack-objects.c: teach '--keep-pack-stdin'
 . packfile: add kept-pack cache for find_kept_pack_entry()
 . pack-objects: rewrite honor-pack-keep logic
 . p5303: measure time to repack with keep
 . p5303: add missing &&-chains
 . builtin/pack-objects.c: learn '--assume-kept-packs-closed'
 . revision: learn '--no-kept-objects'
 . packfile: introduce 'find_kept_pack_entry()'

 "git repack" so far has been only capable of repacking everything
 under the sun into a single pack (or split by size).  A cleverer
 strategy to reduce the cost of repacking a repository has been
 introduced.

 Expecting further work.


* zh/ls-files-deduplicate (2021-01-23) 3 commits
  (merged to 'next' on 2021-01-26 at af7522d2cf)
 + ls-files.c: add --deduplicate option
 + ls_files.c: consolidate two for loops into one
 + ls_files.c: bugfix for --deleted and --modified

 "git ls-files" can and does show multiple entries when the index is
 unmerged, which is a source for confusion unless -s/-u option is in
 use.  A new option --deduplicate has been introduced.

 Will merge to 'master'.


* ah/rebase-no-fork-point-config (2021-01-21) 1 commit
 - rebase: add a config option for --no-fork-point

 "git rebase --[no-]fork-point" gained a configuration variable
 rebase.forkPoint so that users do not have to keep specifying a
 non-default setting.

 Expecting a reroll to update its tests.
 cf. <CAMMLpeTDNLUz9UVnL3aVK=J7X50Sq8L-OVGaoEsT5AY6EQON-g@mail.gmail.com>


* js/range-diff-wo-dotdot (2021-01-27) 3 commits
 - range-diff(docs): explain how to specify commit ranges
 - range-diff/format-patch: handle commit ranges other than A..B
 - range-diff/format-patch: refactor check for commit range

 There are other ways than ".." for a single token to denote a
 "commit range", namely "<rev>^!" and "<rev>^-<n>", but "git
 range-diff" did not understand them.

 Getting there.
 cf. <pull.841.v3.git.1611765444.gitgitgadget@gmail.com>


* jx/t5411-unique-filenames (2021-01-22) 2 commits
 - t5411: refactor check of refs using test_cmp_refs
 - t5411: use different out file to prevent overwriting

 Avoid individual tests in t5411 from getting affected by each other
 by forcing them to use separate output files during the test.


* ph/use-delete-refs (2021-01-21) 1 commit
  (merged to 'next' on 2021-01-26 at e03486152e)
 + use delete_refs when deleting tags or branches

 When removing many branches and tags, the code used to do so one
 ref at a time.  There is another API it can use to delete multiple
 refs, and it makes quite a lot of performance difference when the
 refs are packed.

 Will merge to 'master'.


* tb/ls-refs-optim (2021-01-22) 3 commits
  (merged to 'next' on 2021-01-26 at 09edbf7d9a)
 + ls-refs.c: traverse prefixes of disjoint "ref-prefix" sets
 + ls-refs.c: initialize 'prefixes' before using it
 + refs: expose 'for_each_fullref_in_prefixes'

 The ls-refs protocol operation has been optimized to narrow the
 sub-hierarchy of refs/ it walks to produce response.

 Will merge to 'master'.


* ab/grep-pcre-invalid-utf8 (2021-01-24) 2 commits
  (merged to 'next' on 2021-02-01 at 60be521876)
 + grep/pcre2: better support invalid UTF-8 haystacks
 + grep/pcre2 tests: don't rely on invalid UTF-8 data test

 Update support for invalid UTF-8 in PCRE2.

 Will merge to 'master'.


* ab/retire-pcre1 (2021-01-23) 2 commits
  (merged to 'next' on 2021-02-01 at 532a0a8228)
 + Remove support for v1 of the PCRE library
 + config.mak.uname: remove redundant NO_LIBPCRE1_JIT flag

 The support for deprecated PCRE1 library has been dropped.

 Will merge to 'master'.


* jt/transfer-fsck-across-packs (2021-01-25) 5 commits
 - SQUASH??? test fix
 - fetch-pack: print and use dangling .gitmodules
 - fetch-pack: with packfile URIs, use index-pack arg
 - http-fetch: allow custom index-pack args
 - http: allow custom index-pack args

 The approach to "fsck" the incoming objects in "index-pack" is
 attractive for performance reasons (we have them already in core,
 inflated and ready to be inspected), but fundamentally cannot be
 applied fully when we receive more than one pack stream, as a tree
 object in one pack may refer to a blob object in another pack as
 ".gitmodules", when we want to inspect blobs that are used as
 ".gitmodules" file, for example.  Teach "index-pack" to emit
 objects that must be inspected later and check them in the calling
 "fetch-pack" process.


* jv/pack-objects-narrower-ref-iteration (2021-01-22) 1 commit
  (merged to 'next' on 2021-01-26 at 8a0d178c01)
 + builtin/pack-objects.c: avoid iterating all refs

 The "pack-objects" command needs to iterate over all the tags when
 automatic tag following is enabled, but it actually iterated over
 all refs and then discarded everything outside "refs/tags/"
 hierarchy, which was quite wasteful.

 Will merge to 'master'.


* jv/upload-pack-filter-spec-quotefix (2021-02-02) 2 commits
  (merged to 'next' on 2021-02-03 at 2e34f74e3a)
 + t5544: clarify 'hook works with partial clone' test
  (merged to 'next' on 2021-01-31 at 789bf4154e)
 + upload-pack.c: fix filter spec quoting bug

 Fix in passing custom args from "git clone" to "upload-pack" on the
 other side.

 Will merge to 'master'.


* ab/tests-various-fixup (2021-01-23) 10 commits
  (merged to 'next' on 2021-02-01 at a604a6e217)
 + rm tests: actually test for SIGPIPE in SIGPIPE test
 + archive tests: use a cheaper "zipinfo -h" invocation to get header
 + upload-pack tests: avoid a non-zero "grep" exit status
 + git-svn tests: rewrite brittle tests to use "--[no-]merges".
 + git svn mergeinfo tests: refactor "test -z" to use test_must_be_empty
 + git svn mergeinfo tests: modernize redirection & quoting style
 + cache-tree tests: explicitly test HEAD and index differences
 + cache-tree tests: use a sub-shell with less indirection
 + cache-tree tests: remove unused $2 parameter
 + cache-tree tests: refactor for modern test style

 Various test updates.

 Will merge to 'master'.


* en/ort-directory-rename (2021-01-20) 18 commits
  (merged to 'next' on 2021-02-01 at 5c1cdd13a1)
 + merge-ort: fix a directory rename detection bug
 + merge-ort: process_renames() now needs more defensiveness
 + merge-ort: implement apply_directory_rename_modifications()
 + merge-ort: add a new toplevel_dir field
 + merge-ort: implement handle_path_level_conflicts()
 + merge-ort: implement check_for_directory_rename()
 + merge-ort: implement apply_dir_rename() and check_dir_renamed()
 + merge-ort: implement compute_collisions()
 + merge-ort: modify collect_renames() for directory rename handling
 + merge-ort: implement handle_directory_level_conflicts()
 + merge-ort: implement compute_rename_counts()
 + merge-ort: copy get_renamed_dir_portion() from merge-recursive.c
 + merge-ort: add outline of get_provisional_directory_renames()
 + merge-ort: add outline for computing directory renames
 + merge-ort: collect which directories are removed in dirs_removed
 + merge-ort: initialize and free new directory rename data structures
 + merge-ort: add new data structures for directory rename detection
 + Merge branch 'en/merge-ort-3' into en/ort-directory-rename
 (this branch is used by en/merge-ort-perf.)

 ORT merge strategy learns to infer "renamed directory" while
 merging.

 Will merge to 'master'.


* ab/detox-gettext-tests (2021-01-21) 3 commits
  (merged to 'next' on 2021-02-01 at 5573b4913c)
 + tests: remove uses of GIT_TEST_GETTEXT_POISON=false
 + tests: remove support for GIT_TEST_GETTEXT_POISON
 + ci: remove GETTEXT_POISON jobs

 Get rid of "GETTEXT_POISON" support altogether, which may or may
 not be controversial.

 Will merge to 'master'.


* bc/signed-objects-with-both-hashes (2021-01-18) 6 commits
 - gpg-interface: remove other signature headers before verifying
 - ref-filter: hoist signature parsing
 - commit: allow parsing arbitrary buffers with headers
 - gpg-interface: improve interface for parsing tags
 - commit: ignore additional signatures when parsing signed commits
 - ref-filter: switch some uses of unsigned long to size_t

 Signed commits and tags now allow verification of objects, whose
 two object names (one in SHA-1, the other in SHA-256) are both
 signed.

 Looking good.


* js/rebase-i-commit-cleanup-fix (2021-01-28) 1 commit
  (merged to 'next' on 2021-01-31 at 358f562e1f)
 + rebase -i: do leave commit message intact in fixup! chains

 When "git rebase -i" processes "fixup" insn, there is no reason to
 clean up the commit log message, but we did the usual stripspace
 processing.  This has been corrected.

 Will merge to 'master'.


* tb/pack-revindex-on-disk (2021-01-28) 10 commits
  (merged to 'next' on 2021-02-01 at bd6a780213)
 + t5325: check both on-disk and in-memory reverse index
 + pack-revindex: ensure that on-disk reverse indexes are given precedence
 + t: support GIT_TEST_WRITE_REV_INDEX
 + t: prepare for GIT_TEST_WRITE_REV_INDEX
 + Documentation/config/pack.txt: advertise 'pack.writeReverseIndex'
 + builtin/pack-objects.c: respect 'pack.writeReverseIndex'
 + builtin/index-pack.c: write reverse indexes
 + builtin/index-pack.c: allow stripping arbitrary extensions
 + pack-write.c: prepare to write 'pack-*.rev' files
 + packfile: prepare for the existence of '*.rev' files

 Introduce an on-disk file to record revindex for packdata, which
 traditionally was always created on the fly and only in-core.

 Will merge to 'master'.


* en/merge-ort-perf (2021-01-23) 6 commits
  (merged to 'next' on 2021-02-01 at ca3c07579b)
 + merge-ort: begin performance work; instrument with trace2_region_* calls
 + merge-ort: ignore the directory rename split conflict for now
 + merge-ort: fix massive leak
 + Merge branch 'en/ort-directory-rename' into en/merge-ort-perf
 + Merge branch 'en/ort-conflict-handling' into en/merge-ort-perf
 + Merge branch 'en/diffcore-rename' into en/merge-ort-perf
 (this branch uses en/ort-conflict-handling and en/ort-directory-rename.)

 The "ort" merge strategy.

 Will merge to 'master'.


* ds/cache-tree-basics (2021-01-15) 10 commits
  (merged to 'next' on 2021-01-25 at 29ee74df7b)
 + cache-tree: speed up consecutive path comparisons
 + cache-tree: use ce_namelen() instead of strlen()
 + index-format: discuss recursion of cache-tree better
 + index-format: update preamble to cache tree extension
 + index-format: use 'cache tree' over 'cached tree'
 + cache-tree: trace regions for prime_cache_tree
 + cache-tree: trace regions for I/O
 + cache-tree: use trace2 in cache_tree_update()
 + unpack-trees: add trace2 regions
 + tree-walk: report recursion counts
 (this branch is used by ds/more-index-cleanups.)

 Document, clean-up and optimize the code around the cache-tree
 extension in the index.

 Will merge to 'master'.


* en/ort-conflict-handling (2021-01-04) 10 commits
  (merged to 'next' on 2021-01-25 at 369c1516c4)
 + merge-ort: add handling for different types of files at same path
 + merge-ort: copy find_first_merges() implementation from merge-recursive.c
 + merge-ort: implement format_commit()
 + merge-ort: copy and adapt merge_submodule() from merge-recursive.c
 + merge-ort: copy and adapt merge_3way() from merge-recursive.c
 + merge-ort: flesh out implementation of handle_content_merge()
 + merge-ort: handle book-keeping around two- and three-way content merge
 + merge-ort: implement unique_path() helper
 + merge-ort: handle directory/file conflicts that remain
 + merge-ort: handle D/F conflict where directory disappears due to merge
 (this branch is used by en/merge-ort-perf.)

 ORT merge strategy learns more support for merge conflicts.

 Will merge to 'master'.


* ak/corrected-commit-date (2021-01-18) 11 commits
  (merged to 'next' on 2021-01-26 at deae33ec7d)
 + doc: add corrected commit date info
 + commit-reach: use corrected commit dates in paint_down_to_common()
 + commit-graph: use generation v2 only if entire chain does
 + commit-graph: implement generation data chunk
 + commit-graph: implement corrected commit date
 + commit-graph: return 64-bit generation number
 + commit-graph: add a slab to store topological levels
 + t6600-test-reach: generalize *_three_modes
 + commit-graph: consolidate fill_commit_graph_info
 + revision: parse parent in indegree_walk_step()
 + commit-graph: fix regression when computing Bloom filters
 (this branch is used by ds/chunked-file-api, ds/commit-graph-genno-fix and ds/merge-base-independent.)

 The commit-graph learned to use corrected commit dates instead of
 the generation number to help topological revision traversal.

 Will merge to 'master'.


* mr/bisect-in-c-4 (2021-02-03) 7 commits
 - bisect--helper: retire `--check-and-set-terms` subcommand
 - bisect--helper: reimplement `bisect_skip` shell function in C
 - bisect--helper: retire `--bisect-auto-next` subcommand
 - bisect--helper: use `res` instead of return in BISECT_RESET case option
 - bisect--helper: retire `--bisect-write` subcommand
 - bisect--helper: reimplement `bisect_replay` shell function in C
 - bisect--helper: reimplement `bisect_log` shell function in C

 Piecemeal of rewrite of "git bisect" in C continues.

 Will merge to 'next'.


* jt/clone-unborn-head (2021-02-01) 3 commits
 - clone: respect remote unborn HEAD
 - connect, transport: encapsulate arg in struct
 - ls-refs: report unborn targets of symrefs

 "git clone" tries to locally check out the branch pointed at by
 HEAD of the remote repository after it is done, but the protocol
 did not convey the information necessary to do so when copying an
 empty repository.  The protocol v2 learned how to do so.

 Looking good, modulo some minor documentation nits.


* mt/parallel-checkout-part-1 (2020-12-16) 9 commits
 - entry: add checkout_entry_ca() taking preloaded conv_attrs
 - entry: move conv_attrs lookup up to checkout_entry()
 - entry: extract update_ce_after_write() from write_entry()
 - entry: make fstat_output() and read_blob_entry() public
 - entry: extract a header file for entry.c functions
 - convert: add classification for conv_attrs struct
 - convert: add get_stream_filter_ca() variant
 - convert: add [async_]convert_to_working_tree_ca() variants
 - convert: make convert_attrs() and convert structs public

 Parallel checkout.

 Looking good.


* so/log-diff-merge (2020-12-21) 32 commits
  (merged to 'next' on 2021-01-25 at 63977ef287)
 + t4013: add tests for --diff-merges=first-parent
 + doc/git-show: include --diff-merges description
 + doc/rev-list-options: document --first-parent changes merges format
 + doc/diff-generate-patch: mention new --diff-merges option
 + doc/git-log: describe new --diff-merges options
 + diff-merges: add '--diff-merges=1' as synonym for 'first-parent'
 + diff-merges: add old mnemonic counterparts to --diff-merges
 + diff-merges: let new options enable diff without -p
 + diff-merges: do not imply -p for new options
 + diff-merges: implement new values for --diff-merges
 + diff-merges: make -m/-c/--cc explicitly mutually exclusive
 + diff-merges: refactor opt settings into separate functions
 + diff-merges: get rid of now empty diff_merges_init_revs()
 + diff-merges: group diff-merge flags next to each other inside 'rev_info'
 + diff-merges: split 'ignore_merges' field
 + diff-merges: fix -m to properly override -c/--cc
 + t4013: add tests for -m failing to override -c/--cc
 + t4013: support test_expect_failure through ':failure' magic
 + diff-merges: revise revs->diff flag handling
 + diff-merges: handle imply -p on -c/--cc logic for log.c
 + diff-merges: introduce revs->first_parent_merges flag
 + diff-merges: new function diff_merges_set_dense_combined_if_unset()
 + diff-merges: new function diff_merges_suppress()
 + diff-merges: re-arrange functions to match the order they are called in
 + diff-merges: rename diff_merges_default_to_enable() to match semantics
 + diff-merges: move checks for first_parent_only out of the module
 + diff-merges: rename all functions to have common prefix
 + revision: move diff merges functions to its own diff-merges.c
 + revision: provide implementation for diff merges tweaks
 + revision: factor out initialization of diff-merge related settings
 + revision: factor out setup of diff-merge related settings
 + revision: factor out parsing of diff-merge related options

 "git log" learned a new "--diff-merges=<how>" option.

 Will merge to 'master'.


* es/config-hooks (2020-12-21) 34 commits
 - run-command: stop thinking about hooks
 - receive-pack: convert receive hooks to hook.h
 - post-update: use hook.h library
 - proc-receive: acquire hook list from hook.h
 - receive-pack: convert 'update' hook to hook.h
 - reference-transaction: look for hooks in config
 - transport: convert pre-push hook to use config
 - hook: convert 'post-rewrite' hook to config
 - hooks: convert 'post-checkout' hook to hook library
 - git-p4: use 'git hook' to run hooks
 - receive-pack: convert push-to-checkout hook to hook.h
 - read-cache: convert post-index-change hook to use config
 - rebase: teach pre-rebase to use hook.h
 - gc: use hook library for pre-auto-gc hook
 - merge: use config-based hooks for post-merge hook
 - am: convert applypatch hooks to use config
 - commit: use config-based hooks
 - hooks: allow callers to capture output
 - run-command: allow capturing of collated output
 - hook: provide stdin by string_list or callback
 - run-command: add stdin callback for parallelization
 - hook: allow specifying working directory for hooks
 - hook: allow parallel hook execution
 - run-command: allow stdin for run_processes_parallel
 - hook: support passing stdin to hooks
 - hook: replace find_hook() with hook_exists()
 - hook: add 'run' subcommand
 - parse-options: parse into strvec
 - hook: implement hookcmd.<name>.skip
 - hook: respect hook.runHookDir
 - hook: include hookdir hook in list
 - hook: add list command
 - hook: scaffolding for git-hook subcommand
 - doc: propose hooks managed by the config

 The "hooks defined in config" topic.

 Expecting doc updates, but otherwise seems to be progressing nicely.


* hn/reftable (2020-12-21) 16 commits
 - SQUASH??? allow t0031 to run with any default branch name
 - Add "test-tool dump-reftable" command.
 - git-prompt: prepare for reftable refs backend
 - Reftable support for git-core
 - reftable: rest of library
 - reftable: reftable file level tests
 - reftable: read reftable files
 - reftable: write reftable files
 - reftable: a generic binary tree implementation
 - reftable: reading/writing blocks
 - reftable: (de)serialization for the polymorphic record type.
 - reftable: add blocksource, an abstraction for random access reads
 - reftable: utility functions
 - reftable: add error related functionality
 - reftable: add LICENSE
 - init-db: set the_repository->hash_algo early on

 The "reftable" backend for the refs API.

--------------------------------------------------
[Discarded]

* ds/update-index (2021-01-09) 14 commits
 . update-index: remove static globals from callbacks
 . update-index: reduce static globals, part 2
 . update-index: reduce static globals, part 1
 . update-index: remove ce_match_stat(), all macros
 . update-index: replace several compatibility macros
 . update-index: use add_index_entry()
 . update-index: use remove_file_from_index()
 . update-index: use index_name_pos() over cache_name_pos()
 . update-index: use istate->cache_changed
 . update-index: use istate->cache_nr over active_nr
 . update-index: use istate->cache over active_cache
 . update-index: drop the_index, the_repository
 . rm: remove compatilibity macros
 . mv: remove index compatibility macros
 (this branch uses ag/merge-strategies-in-c.)

 The implementation of a few commands lost reliance of "the_index"
 compatibility macros by explicitly passing the index_state through
 the callchain.

 Retracted for now.
 cf. <a6906459-3a93-ecad-c460-b6c763819389@gmail.com>


* fc/mergetool-automerge (2021-01-09) 8 commits
 . fixup! mergetool: break setup_tool out into separate initialization function
 . fixup! fixup! mergetool: add automerge configuration
 . fixup! mergetool: add automerge configuration
 . mergetool: add automerge_enabled tool-specific override function
 . mergetool: break setup_tool out into separate initialization function
 . mergetool: add per-tool support for the autoMerge flag
 . mergetool: alphabetize the mergetool config docs
 . mergetool: add automerge configuration

 "git mergetool" feeds three versions (base, local and remote) of
 a conflicted path unmodified.  The command learned to optionally
 prepare these files with unconflicted parts already resolved.

 Superseded by the sh/mergetool-hideresolved topic.

Re: What's cooking in git.git (Feb 2021, #01; Wed, 3)

[Charvi Mendiratta]

On Thu, 4 Feb 2021 at 06:00, Junio C Hamano <gitster@pobox.com> wrote:

> * cm/rebase-i (2021-01-29) 9 commits
>   (merged to 'next' on 2021-02-01 at 4f9aa6cec3)
>  + doc/git-rebase: add documentation for fixup [-C|-c] options
>  + rebase -i: teach --autosquash to work with amend!
>  + t3437: test script for fixup [-C|-c] options in interactive rebase
>  + rebase -i: add fixup [-C | -c] command
>  + sequencer: use const variable for commit message comments
>  + sequencer: pass todo_item to do_pick_commit()
>  + rebase -i: comment out squash!/fixup! subjects from squash message
>  + sequencer: factor out code to append squash message
>  + rebase -i: only write fixup-message when it's needed
>
>  "rebase -i" is getting cleaned up and also enhanced.
>
>  Will merge to 'master'.
>

Received reviews and suggestions on this patch series. So, updated
those changes and have sent the next version of this patch series (v5).

Thanks and Regards,
Charvi

Re: What's cooking in git.git (Feb 2021, #01; Wed, 3)

[Junio C Hamano]

Charvi Mendiratta <charvi077@gmail.com> writes:

> On Thu, 4 Feb 2021 at 06:00, Junio C Hamano <gitster@pobox.com> wrote:
>
>> * cm/rebase-i (2021-01-29) 9 commits
>>   (merged to 'next' on 2021-02-01 at 4f9aa6cec3)
>>  + doc/git-rebase: add documentation for fixup [-C|-c] options
>>  + rebase -i: teach --autosquash to work with amend!
>>  + t3437: test script for fixup [-C|-c] options in interactive rebase
>>  + rebase -i: add fixup [-C | -c] command
>>  + sequencer: use const variable for commit message comments
>>  + sequencer: pass todo_item to do_pick_commit()
>>  + rebase -i: comment out squash!/fixup! subjects from squash message
>>  + sequencer: factor out code to append squash message
>>  + rebase -i: only write fixup-message when it's needed
>>
>>  "rebase -i" is getting cleaned up and also enhanced.
>>
>>  Will merge to 'master'.
>>
>
> Received reviews and suggestions on this patch series. So, updated
> those changes and have sent the next version of this patch series (v5).

We incrementally fix shortcomings in the series with additional
patches after a topic gets merged to 'next'.  It no longer is
appropriate to replace with "the net version".

Thanks.