What's cooking in git.git (Aug 2018, #05; Mon, 20)

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Here are the topics that have been cooking.  Commits prefixed with
'-' are only in '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.

An early preview of the upcoming 2.19 release of Git has been tagged
as v2.19.0-rc0; before -rc1, I plan to merge three more topics to
'master' from 'next'.

You can find the changes described here in the integration branches
of the repositories listed at

    http://git-blame.blogspot.com/p/git-public-repositories.html

--------------------------------------------------
[Graduated to "master"]

* ab/checkout-default-remote (2018-08-18) 1 commit
  (merged to 'next' on 2018-08-20 at 21fff26f74)
 + t2024: mark test using "checkout -p" with PERL prerequisite

 Test fix.


* ab/fetch-tags-noclobber (2018-08-13) 7 commits
  (merged to 'next' on 2018-08-15 at eca0ac8afa)
 + pull doc: fix a long-standing grammar error
 + fetch tests: correct a comment "remove it" -> "remove them"
 + push tests: assert re-pushing annotated tags
 + push tests: add more testing for forced tag pushing
 + push tests: fix logic error in "push" test assertion
 + push tests: remove redundant 'git push' invocation
 + fetch tests: change "Tag" test tag to "testTag"

 Test and doc clean-ups.


* ab/newhash-is-sha256 (2018-08-07) 2 commits
  (merged to 'next' on 2018-08-15 at 2e808d75d3)
 + doc hash-function-transition: pick SHA-256 as NewHash
 + doc hash-function-transition: note the lack of a changelog

 Documentation update.


* ab/submodule-relative-url-tests (2018-08-14) 1 commit
  (merged to 'next' on 2018-08-17 at 17b28d8262)
 + submodule: add more exhaustive up-path testing

 Test updates.


* ab/test-must-be-empty-for-master (2018-07-30) 1 commit
  (merged to 'next' on 2018-08-15 at 17652a77fb)
 + tests: make use of the test_must_be_empty function

 Test updates.


* ds/commit-graph-fsck (2018-08-13) 1 commit
  (merged to 'next' on 2018-08-15 at a2f82d3cbd)
 + t5318: use 'test_cmp_bin' to compare commit-graph files

 Test fix.


* en/incl-forward-decl (2018-08-15) 6 commits
  (merged to 'next' on 2018-08-17 at 04fc9c11bb)
 + Remove forward declaration of an enum
 + compat/precompose_utf8.h: use more common include guard style
 + urlmatch.h: fix include guard
 + Move definition of enum branch_track from cache.h to branch.h
 + alloc: make allocate_alloc_state and clear_alloc_state more consistent
 + Add missing includes and forward declarations

 Code hygiene improvement for the header files.


* en/t7406-fixes (2018-08-08) 5 commits
  (merged to 'next' on 2018-08-15 at c6a740d828)
 + t7406: avoid using test_must_fail for commands other than git
 + t7406: prefer test_* helper functions to test -[feds]
 + t7406: avoid having git commands upstream of a pipe
 + t7406: simplify by using diff --name-only instead of diff --raw
 + t7406: fix call that was failing for the wrong reason

 Test fixes.


* en/update-index-doc (2018-08-08) 1 commit
  (merged to 'next' on 2018-08-15 at 3ee0ae14dc)
 + git-update-index.txt: reword possibly confusing example

 Doc update.


* es/chain-lint-more (2018-08-13) 6 commits
  (merged to 'next' on 2018-08-15 at bb5150ee96)
 + chainlint: add test of pathological case which triggered false positive
 + chainlint: recognize multi-line quoted strings more robustly
 + chainlint: let here-doc and multi-line string commence on same line
 + chainlint: recognize multi-line $(...) when command cuddled with "$("
 + chainlint: match 'quoted' here-doc tags
 + chainlint: match arbitrary here-docs tags rather than hard-coded names

 Improve built-in facility to catch broken &&-chain in the tests.


* hn/highlight-sideband-keywords (2018-08-18) 2 commits
  (merged to 'next' on 2018-08-20 at ec6f953f8c)
 + sideband: do not read beyond the end of input
  (merged to 'next' on 2018-08-15 at f8945f3be5)
 + sideband: highlight keywords in remote sideband output

 The sideband code learned to optionally paint selected keywords at
 the beginning of incoming lines on the receiving end.


* jc/gpg-status (2018-08-09) 1 commit
  (merged to 'next' on 2018-08-15 at 824781761a)
 + gpg-interface: propagate exit status from gpg back to the callers

 "git verify-tag" and "git verify-commit" have been taught to use
 the exit status of underlying "gpg --verify" to signal bad or
 untrusted signature they found.


* jc/update-index-doc (2018-08-08) 1 commit
  (merged to 'next' on 2018-08-15 at 055994ccca)
 + update-index: there no longer is `apply --index-info`

 Doc update.


* jh/partial-clone-doc (2018-08-15) 1 commit
  (merged to 'next' on 2018-08-15 at cf09e8be6a)
 + partial-clone: render design doc using asciidoc

 Doc updates.


* jk/for-each-object-iteration (2018-08-14) 11 commits
  (merged to 'next' on 2018-08-15 at e2558810ff)
 + for_each_*_object: move declarations to object-store.h
 + cat-file: use a single strbuf for all output
 + cat-file: split batch "buf" into two variables
 + cat-file: use oidset check-and-insert
 + cat-file: support "unordered" output for --batch-all-objects
 + cat-file: rename batch_{loose,packed}_object callbacks
 + t1006: test cat-file --batch-all-objects with duplicates
 + for_each_packed_object: support iterating in pack-order
 + for_each_*_object: give more comprehensive docstrings
 + for_each_*_object: take flag arguments as enum
 + for_each_*_object: store flag definitions in a single location

 The API to iterate over all objects learned to optionally list
 objects in the order they appear in packfiles, which helps locality
 of access if the caller accesses these objects while as objects are
 enumerated.


* js/chain-lint-attrfix (2018-08-15) 1 commit
  (merged to 'next' on 2018-08-15 at e9ad19a848)
 + chainlint: fix for core.autocrlf=true

 Test fix.


* js/mingw-o-append (2018-08-13) 1 commit
  (merged to 'next' on 2018-08-15 at 284527a0fb)
 + mingw: enable atomic O_APPEND

 Among the three codepaths we use O_APPEND to open a file for
 appending, one used for writing GIT_TRACE output requires O_APPEND
 implementation that behaves sensibly when multiple processes are
 writing to the same file.  POSIX emulation used in the Windows port
 has been updated to improve in this area.


* js/range-diff (2018-08-13) 21 commits
  (merged to 'next' on 2018-08-15 at 8d56067806)
 + range-diff: use dim/bold cues to improve dual color mode
 + range-diff: make --dual-color the default mode
 + range-diff: left-pad patch numbers
 + completion: support `git range-diff`
 + range-diff: populate the man page
 + range-diff --dual-color: skip white-space warnings
 + range-diff: offer to dual-color the diffs
 + diff: add an internal option to dual-color diffs of diffs
 + color: add the meta color GIT_COLOR_REVERSE
 + range-diff: use color for the commit pairs
 + range-diff: add tests
 + range-diff: do not show "function names" in hunk headers
 + range-diff: adjust the output of the commit pairs
 + range-diff: suppress the diff headers
 + range-diff: indent the diffs just like tbdiff
 + range-diff: right-trim commit messages
 + range-diff: also show the diff between patches
 + range-diff: improve the order of the shown commits
 + range-diff: first rudimentary implementation
 + Introduce `range-diff` to compare iterations of a topic branch
 + linear-assignment: a function to solve least-cost assignment problems
 (this branch is used by es/format-patch-rangediff and sb/range-diff-colors.)

 "git tbdiff" that lets us compare individual patches in two
 iterations of a topic has been rewritten and made into a built-in
 command.


* js/rebase-merges-exec-fix (2018-08-09) 2 commits
  (merged to 'next' on 2018-08-15 at 9de975d92d)
 + rebase --exec: make it work with --rebase-merges
 + t3430: demonstrate what -r, --autosquash & --exec should do

 The "--exec" option to "git rebase --rebase-merges" placed the exec
 commands at wrong places, which has been corrected.


* js/typofixes (2018-08-08) 2 commits
  (merged to 'next' on 2018-08-15 at ce3932254a)
 + remote-curl: remove spurious period
 + git-compat-util.h: fix typo

 Comment update.


* jt/commit-graph-per-object-store (2018-08-13) 1 commit
  (merged to 'next' on 2018-08-15 at 5d6db738d8)
 + t5318: avoid unnecessary command substitutions

 Test update.


* jt/fetch-negotiator-skipping (2018-08-10) 1 commit
  (merged to 'next' on 2018-08-15 at 3cf8fa32f5)
 + t5552: suppress upload-pack trace output

 Test fix.


* jt/repack-promisor-packs (2018-08-09) 2 commits
  (merged to 'next' on 2018-08-17 at 6869b53a69)
 + repack: repack promisor objects if -a or -A is set
 + repack: refactor setup of pack-objects cmd

 After a partial clone, repeated fetches from promisor remote would
 have accumulated many packfiles marked with .promisor bit without
 getting them coalesced into fewer packfiles, hurting performance.
 "git repack" now learned to repack them.


* nd/cherry-pick-quit-fix (2018-08-16) 1 commit
  (merged to 'next' on 2018-08-17 at b270179855)
 + cherry-pick: fix --quit not deleting CHERRY_PICK_HEAD

 "git cherry-pick --quit" failed to remove CHERRY_PICK_HEAD even
 though we won't be in a cherry-pick session after it returns, which
 has been corrected.


* nd/no-the-index (2018-08-13) 24 commits
  (merged to 'next' on 2018-08-15 at 41e53dc53b)
 + blame.c: remove implicit dependency on the_index
 + apply.c: remove implicit dependency on the_index
 + apply.c: make init_apply_state() take a struct repository
 + apply.c: pass struct apply_state to more functions
 + resolve-undo.c: use the right index instead of the_index
 + archive-*.c: use the right repository
 + archive.c: avoid access to the_index
 + grep: use the right index instead of the_index
 + attr: remove index from git_attr_set_direction()
 + entry.c: use the right index instead of the_index
 + submodule.c: use the right index instead of the_index
 + pathspec.c: use the right index instead of the_index
 + unpack-trees: avoid the_index in verify_absent()
 + unpack-trees: convert clear_ce_flags* to avoid the_index
 + unpack-trees: don't shadow global var the_index
 + unpack-trees: add a note about path invalidation
 + unpack-trees: remove 'extern' on function declaration
 + ls-files: correct index argument to get_convert_attr_ascii()
 + preload-index.c: use the right index instead of the_index
 + dir.c: remove an implicit dependency on the_index in pathspec code
 + convert.c: remove an implicit dependency on the_index
 + attr: remove an implicit dependency on the_index
 + cache-tree: wrap the_index based wrappers with #ifdef
 + diff.c: move read_index() code back to the caller

 The more library-ish parts of the codebase learned to work on the
 in-core index-state instance that is passed in by their callers,
 instead of always working on the singleton "the_index" instance.


* ng/mergetool-lose-final-prompt (2018-08-13) 1 commit
  (merged to 'next' on 2018-08-15 at f8f7ac365b)
 + mergetool: don't suggest to continue after last file

 "git mergetool" stopped and gave an extra prompt to continue after
 the last path has been handled, which did not make much sense.


* pw/rebase-i-merge-segv-fix (2018-08-16) 2 commits
  (merged to 'next' on 2018-08-17 at c8823e4511)
 + rebase -i: fix SIGSEGV when 'merge <branch>' fails
 + t3430: add conflicting commit

 "git rebase -i", when a 'merge <branch>' insn in its todo list
 fails, segfaulted, which has been (minimally) corrected.


* pw/rebase-i-squash-number-fix (2018-08-15) 1 commit
  (merged to 'next' on 2018-08-17 at ac54dfa51a)
 + rebase -i: fix numbering in squash message

 When "git rebase -i" is told to squash two or more commits into
 one, it labeled the log message for each commit with its number.
 It correctly called the first one "1st commit", but the next one
 was "commit #1", which was off-by-one.  This has been corrected.


* sb/config-write-fix (2018-08-08) 3 commits
  (merged to 'next' on 2018-08-17 at 7d9c7ce81f)
 + git-config: document accidental multi-line setting in deprecated syntax
 + config: fix case sensitive subsection names on writing
 + t1300: document current behavior of setting options

 Recent update to "git config" broke updating variable in a
 subsection, which has been corrected.


* sb/pull-rebase-submodule (2018-08-14) 1 commit
  (merged to 'next' on 2018-08-15 at 07c7b55cc9)
 + git-submodule.sh: accept verbose flag in cmd_update to be non-quiet

 "git pull --rebase -v" in a repository with a submodule barfed as
 an intermediate process did not understand what "-v(erbose)" flag
 meant, which has been fixed.


* sb/submodule-cleanup (2018-08-16) 2 commits
  (merged to 'next' on 2018-08-17 at ca9d8aaef4)
 + builtin/submodule--helper: remove stray new line
 + t7410: update to new style

 A few preliminary minor clean-ups in the area around submodules.


* sg/t5310-empty-input-fix (2018-08-14) 1 commit
  (merged to 'next' on 2018-08-15 at c3c03973a0)
 + t5310-pack-bitmaps: fix bogus 'pack-objects to file can use bitmap' test

 Test fix.


* sk/instaweb-rh-update (2018-08-08) 2 commits
  (merged to 'next' on 2018-08-15 at ce5f1115e9)
 + git-instaweb: fix apache2 config with apache >= 2.4
 + git-instaweb: support Fedora/Red Hat apache module path

 "git instaweb" has been adjusted to run better with newer Apache on
 RedHat based distros.


* wc/make-funnynames-shared-lazy-prereq (2018-08-06) 1 commit
  (merged to 'next' on 2018-08-17 at b932a0894b)
 + t: factor out FUNNYNAMES as shared lazy prereq

 A test prerequisite defined by various test scripts with slightly
 different semantics has been consolidated into a single copy and
 made into a lazily defined one.

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

* sl/commit-dry-run-with-short-output-fix (2018-07-30) 4 commits
 . commit: fix exit code when doing a dry run
 . wt-status: teach wt_status_collect about merges in progress
 . wt-status: rename commitable to committable
 . t7501: add coverage for flags which imply dry runs

 "git commit --dry-run" gave a correct exit status even during a
 conflict resolution toward a merge, but it did not with the
 "--short" option, which has been corrected.

 Seems to break 7512, 3404 and 7060 in 'pu'.


* ma/wrapped-info (2018-05-28) 2 commits
 - usage: prefix all lines in `vreportf()`, not just the first
 - usage: extract `prefix_suffix_lines()` from `advise()`

 An attempt to help making multi-line messages fed to warning(),
 error(), and friends more easily translatable.

 Will discard and wait for a cleaned-up rewrite.
 cf. <20180529213957.GF7964@xxxxxxxxxxxxxxxxxxxxx>


* hn/bisect-first-parent (2018-04-21) 1 commit
 - bisect: create 'bisect_flags' parameter in find_bisection()

 Preliminary code update to allow passing more flags down the
 bisection codepath in the future.

 We do not add random code that does not have real users to our
 codebase, so let's have it wait until such a real code materializes
 before too long.


* av/fsmonitor-updates (2018-01-04) 6 commits
 - fsmonitor: use fsmonitor data in `git diff`
 - fsmonitor: remove debugging lines from t/t7519-status-fsmonitor.sh
 - fsmonitor: make output of test-dump-fsmonitor more concise
 - fsmonitor: update helper tool, now that flags are filled later
 - fsmonitor: stop inline'ing mark_fsmonitor_valid / _invalid
 - dir.c: update comments to match argument name

 Code clean-up on fsmonitor integration, plus optional utilization
 of the fsmonitor data in diff-files.

 Waiting for an update.
 cf. <alpine.DEB.2.21.1.1801042335130.32@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>


* pb/bisect-helper-2 (2018-07-23) 8 commits
 - t6030: make various test to pass GETTEXT_POISON tests
 - bisect--helper: `bisect_start` shell function partially in C
 - bisect--helper: `get_terms` & `bisect_terms` shell function in C
 - bisect--helper: `bisect_next_check` shell function in C
 - bisect--helper: `check_and_set_terms` shell function in C
 - wrapper: move is_empty_file() and rename it as is_empty_or_missing_file()
 - bisect--helper: `bisect_write` shell function in C
 - bisect--helper: `bisect_reset` shell function in C

 Expecting a reroll.
 cf. <0102015f5e5ee171-f30f4868-886f-47a1-a4e4-b4936afc545d-000000@xxxxxxxxxxxxxxxxxxxxxxx>

 I just rebased the topic to a newer base as it did not build
 standalone with the base I originally queued the topic on, but
 otherwise there is no update to address any of the review comments
 in the thread above---we are still waiting for a reroll.


* jk/drop-ancient-curl (2017-08-09) 5 commits
 - http: #error on too-old curl
 - curl: remove ifdef'd code never used with curl >=7.19.4
 - http: drop support for curl < 7.19.4
 - http: drop support for curl < 7.16.0
 - http: drop support for curl < 7.11.1

 Some code in http.c that has bitrot is being removed.

 Expecting a reroll.


* mk/use-size-t-in-zlib (2017-08-10) 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".

 Needs resurrecting by making sure the fix is good and still applies
 (or adjusted to today's codebase).

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

* ep/worktree-quiet-option (2018-08-17) 1 commit
 - worktree: add --quiet option

 "git worktree" command learned "--quiet" option to make it less
 verbose.

 Will merge to 'next'.


* nd/config-core-checkstat-doc (2018-08-17) 1 commit
 - config.txt: clarify core.checkStat

 The meaning of the possible values the "core.checkStat"
 configuration variable can take were not adequately documented,
 which has been fixed.

 Will merge to 'next'.


* sm/branch-sort-config (2018-08-16) 1 commit
 - branch: support configuring --sort via .gitconfig

 "git branch --list" learned to take the default sort order from the
 'branch.sort' configuration variable, just like "git tag --list"
 pays attention to 'tag.sort'.

 Will merge to 'next'.


* ab/unconditional-free-and-null (2018-08-17) 1 commit
 - refactor various if (x) FREE_AND_NULL(x) to just FREE_AND_NULL(x)

 Code clean-up.

 Will merge to 'next'.


* bp/checkout-new-branch-optim (2018-08-16) 1 commit
 - checkout: optimize "git checkout -b <new_branch>"

 "git checkout -b newbranch [HEAD]" should not have to do as much as
 checking out a commit different from HEAD.  An attempt is made to
 optimize this special case.

 So... what is the status of this thing?  Is the other "optimize
 unpack-trees" effort turning out to be a safer and less hacky way
 to achieve similar gain and this no longer is needed?


* ao/submodule-wo-gitmodules-checked-out (2018-08-14) 7 commits
 - submodule: support reading .gitmodules even when it's not checked out
 - t7506: clean up .gitmodules properly before setting up new scenario
 - submodule: use the 'submodule--helper config' command
 - submodule--helper: add a new 'config' subcommand
 - t7411: be nicer to future tests and really clean things up
 - submodule: factor out a config_set_in_gitmodules_file_gently function
 - submodule: add a print_config_from_gitmodules() helper

 The submodule support has been updated to read from the blob at
 HEAD:.gitmodules when the .gitmodules file is missing from the
 working tree.

 I find the design a bit iffy in that our usual "missing in the
 working tree?  let's use the latest blob" fallback is to take it
 from the index, not from the HEAD.


* bw/submodule-name-to-dir (2018-08-10) 2 commits
 - submodule: munge paths to submodule git directories
 - submodule: create helper to build paths to submodule gitdirs

 In modern repository layout, the real body of a cloned submodule
 repository is held in .git/modules/ of the superproject, indexed by
 the submodule name.  URLencode the submodule name before computing
 the name of the directory to make sure they form a flat namespace.

 Will merge to 'next'.


* cc/delta-islands (2018-08-16) 7 commits
 - pack-objects: move 'layer' into 'struct packing_data'
 - pack-objects: move tree_depth into 'struct packing_data'
 - t5320: tests for delta islands
 - repack: add delta-islands support
 - pack-objects: add delta-islands support
 - pack-objects: refactor code into compute_layer_order()
 - Add delta-islands.{c,h}

 Lift code from GitHub to restrict delta computation so that an
 object that exists in one fork is not made into a delta against
 another object that does not appear in the same forked repository.

 What's the doneness of this topic?


* md/filter-trees (2018-08-16) 6 commits
 - list-objects-filter: implement filter tree:0
 - revision: mark non-user-given objects instead
 - rev-list: handle missing tree objects properly
 - list-objects: always parse trees gently
 - list-objects: refactor to process_tree_contents
 - list-objects: store common func args in struct

 The "rev-list --filter" feature learned to exclude all trees via
 "tree:0" filter.


* ng/status-i-short-for-ignored (2018-08-09) 1 commit
 - status: -i shorthand for --ignored command line option


* pk/rebase-in-c-2-basic (2018-08-10) 11 commits
 - builtin rebase: support `git rebase <upstream> <switch-to>`
 - builtin rebase: only store fully-qualified refs in `options.head_name`
 - builtin rebase: start a new rebase only if none is in progress
 - builtin rebase: support --force-rebase
 - builtin rebase: try to fast forward when possible
 - builtin rebase: require a clean worktree
 - builtin rebase: support the `verbose` and `diffstat` options
 - builtin rebase: support --quiet
 - builtin rebase: handle the pre-rebase hook (and add --no-verify)
 - builtin rebase: support `git rebase --onto A...B`
 - builtin rebase: support --onto
 (this branch is used by pk/rebase-in-c-3-acts, pk/rebase-in-c-4-opts, pk/rebase-in-c-5-test and pk/rebase-in-c-6-final; uses pk/rebase-in-c.)


* pk/rebase-in-c-3-acts (2018-08-10) 7 commits
 - builtin rebase: stop if `git am` is in progress
 - builtin rebase: actions require a rebase in progress
 - builtin rebase: support --edit-todo and --show-current-patch
 - builtin rebase: support --quit
 - builtin rebase: support --abort
 - builtin rebase: support --skip
 - builtin rebase: support --continue
 (this branch is used by pk/rebase-in-c-4-opts, pk/rebase-in-c-5-test and pk/rebase-in-c-6-final; uses pk/rebase-in-c and pk/rebase-in-c-2-basic.)


* pk/rebase-in-c-4-opts (2018-08-10) 18 commits
 - builtin rebase: support --root
 - builtin rebase: add support for custom merge strategies
 - builtin rebase: support `fork-point` option
 - merge-base --fork-point: extract libified function
 - builtin rebase: support --rebase-merges[=[no-]rebase-cousins]
 - builtin rebase: support `--allow-empty-message` option
 - builtin rebase: support `--exec`
 - builtin rebase: support `--autostash` option
 - builtin rebase: support `-C` and `--whitespace=<type>`
 - builtin rebase: support `--gpg-sign` option
 - builtin rebase: support `--autosquash`
 - builtin rebase: support `keep-empty` option
 - builtin rebase: support `ignore-date` option
 - builtin rebase: support `ignore-whitespace` option
 - builtin rebase: support --committer-date-is-author-date
 - builtin rebase: support --rerere-autoupdate
 - builtin rebase: support --signoff
 - builtin rebase: allow selecting the rebase "backend"
 (this branch is used by pk/rebase-in-c-5-test and pk/rebase-in-c-6-final; uses pk/rebase-in-c, pk/rebase-in-c-2-basic and pk/rebase-in-c-3-acts.)


* pk/rebase-in-c-5-test (2018-08-10) 6 commits
 - builtin rebase: error out on incompatible option/mode combinations
 - builtin rebase: use no-op editor when interactive is "implied"
 - builtin rebase: show progress when connected to a terminal
 - builtin rebase: fast-forward to onto if it is a proper descendant
 - builtin rebase: optionally pass custom reflogs to reset_head()
 - builtin rebase: optionally auto-detect the upstream
 (this branch is used by pk/rebase-in-c-6-final; uses pk/rebase-in-c, pk/rebase-in-c-2-basic, pk/rebase-in-c-3-acts and pk/rebase-in-c-4-opts.)


* pk/rebase-in-c-6-final (2018-08-10) 1 commit
 - rebase: default to using the builtin rebase
 (this branch uses pk/rebase-in-c, pk/rebase-in-c-2-basic, pk/rebase-in-c-3-acts, pk/rebase-in-c-4-opts and pk/rebase-in-c-5-test.)

 With "rebase -i" machinery being rewritten to C, with a different
 interface between "rebase" proper and its backends, this and the
 other topics need a bit more work to play with each other better.


* ps/stash-in-c (2018-08-08) 26 commits
 - stash: replace all "git apply" child processes with API calls
 - stash: replace all `write-tree` child processes with API calls
 - stash: optimize `get_untracked_files()` and `check_changes()`
 - stash: convert `stash--helper.c` into `stash.c`
 - stash: convert save to builtin
 - stash: replace spawning `git ls-files` child process
 - stash: add tests for `git stash push -q`
 - stash: make push to be quiet
 - stash: convert push to builtin
 - stash: avoid spawning a "diff-index" process
 - stash: replace spawning a "read-tree" process
 - stash: convert create to builtin
 - stash: convert store to builtin
 - stash: update `git stash show` documentation
 - stash: refactor `show_stash()` to use the diff API
 - stash: change `git stash show` usage text and documentation
 - stash: convert show to builtin
 - stash: implement the "list" command in the builtin
 - stash: convert pop to builtin
 - stash: convert branch to builtin
 - stash: convert drop and clear to builtin
 - stash: convert apply to builtin
 - stash: renamed test cases to be more descriptive
 - stash: update test cases conform to coding guidelines
 - stash: improve option parsing test coverage
 - sha1-name.c: added 'get_oidf', which acts like 'get_oid'


* nd/clone-case-smashing-warning (2018-08-17) 1 commit
 - clone: report duplicate entries on case-insensitive filesystems

 Running "git clone" against a project that contain two files with
 pathnames that differ only in cases on a case insensitive
 filesystem would result in one of the files lost because the
 underlying filesystem is incapable of holding both at the same
 time.  An attempt is made to detect such a case and warn.

 Will merge to 'next'.


* nd/unpack-trees-with-cache-tree (2018-08-18) 7 commits
 - cache-tree: verify valid cache-tree in the test suite
 - unpack-trees: add missing cache invalidation
 - unpack-trees: reuse (still valid) cache-tree from src_index
 - unpack-trees: reduce malloc in cache-tree walk
 - unpack-trees: optimize walking same trees with cache-tree
 - unpack-trees: add performance tracing
 - trace.h: support nested performance tracing

 The unpack_trees() API used in checking out a branch and merging
 walks one or more trees along with the index.  When the cache-tree
 in the index tells us that we are walking a tree whose flattened
 contents is known (i.e. matches a span in the index), as linearly
 scanning a span in the index is much more efficient than having to
 open tree objects recursively and listing their entries, the walk
 can be optimized, which is done in this topic.

 Will merge to and cook in 'next'.


* sb/range-diff-colors (2018-08-14) 8 commits
 - diff.c: rewrite emit_line_0 more understandably
 - diff.c: omit check for line prefix in emit_line_0
 - diff: use emit_line_0 once per line
 - diff.c: add set_sign to emit_line_0
 - diff.c: reorder arguments for emit_line_ws_markup
 - diff.c: simplify caller of emit_line_0
 - t3206: add color test for range-diff --dual-color
 - test_decode_color: understand FAINT and ITALIC

 The color output support for recently introduced "range-diff"
 command got tweaked a bit.


* sg/t1404-update-ref-test-timeout (2018-08-01) 1 commit
 - t1404: increase core.packedRefsTimeout to avoid occasional test failure

 An attempt to unflake a test a bit.


* pw/rebase-i-author-script-fix (2018-08-07) 2 commits
 - sequencer: fix quoting in write_author_script
 - sequencer: handle errors from read_author_ident()

 Recent "git rebase -i" update started to write bogusly formatted
 author-script, with a matching broken reading code.  These are
 being fixed.

 Undecided.
 Is it the list consensus to favor this "with extra code, read the
 script written by bad writer" approach?


* pw/add-p-select (2018-07-26) 4 commits
 - add -p: optimize line selection for short hunks
 - add -p: allow line selection to be inverted
 - add -p: select modified lines correctly
 - add -p: select individual hunk lines

 "git add -p" interactive interface learned to let users choose
 individual added/removed lines to be used in the operation, instead
 of accepting or rejecting a whole hunk.

 Will hold.
 cf. <d622a95b-7302-43d4-4ec9-b2cf3388c653@xxxxxxxxxxxx>
 I found the feature to be hard to explain, and may result in more
 end-user complaints, but let's see.


* ds/commit-graph-with-grafts (2018-07-19) 8 commits
  (merged to 'next' on 2018-08-02 at 0ee624e329)
 + commit-graph: close_commit_graph before shallow walk
 + commit-graph: not compatible with uninitialized repo
 + commit-graph: not compatible with grafts
 + commit-graph: not compatible with replace objects
 + test-repository: properly init repo
 + commit-graph: update design document
 + refs.c: upgrade for_each_replace_ref to be a each_repo_ref_fn callback
 + refs.c: migrate internal ref iteration to pass thru repository argument

 The recently introduced commit-graph auxiliary data is incompatible
 with mechanisms such as replace & grafts that "breaks" immutable
 nature of the object reference relationship.  Disable optimizations
 based on its use (and updating existing commit-graph) when these
 incompatible features are in use in the repository.

 Eject and replace with another reroll when it comes.
 cf. <85c6eb4c-a083-4fb7-4860-b01a8ce9fa4f@xxxxxxxxx>


* ds/reachable (2018-07-20) 18 commits
 - commit-reach: use can_all_from_reach
 - commit-reach: make can_all_from_reach... linear
 - commit-reach: replace ref_newer logic
 - test-reach: test commit_contains
 - test-reach: test can_all_from_reach_with_flags
 - test-reach: test reduce_heads
 - test-reach: test get_merge_bases_many
 - test-reach: test is_descendant_of
 - test-reach: test in_merge_bases
 - test-reach: create new test tool for ref_newer
 - commit-reach: move can_all_from_reach_with_flags
 - upload-pack: generalize commit date cutoff
 - upload-pack: refactor ok_to_give_up()
 - upload-pack: make reachable() more generic
 - commit-reach: move commit_contains from ref-filter
 - commit-reach: move ref_newer from remote.c
 - commit.h: remove method declarations
 - commit-reach: move walk methods from commit.c

 The code for computing history reachability has been shuffled,
 obtained a bunch of new tests to cover them, and then being
 improved.

 Will merge to and cook in 'next'.


* es/format-patch-interdiff (2018-07-23) 6 commits
 - format-patch: allow --interdiff to apply to a lone-patch
 - log-tree: show_log: make commentary block delimiting reusable
 - interdiff: teach show_interdiff() to indent interdiff
 - format-patch: teach --interdiff to respect -v/--reroll-count
 - format-patch: add --interdiff option to embed diff in cover letter
 - format-patch: allow additional generated content in make_cover_letter()
 (this branch is used by es/format-patch-rangediff.)

 "git format-patch" learned a new "--interdiff" option to explain
 the difference between this version and the previous atttempt in
 the cover letter (or after the tree-dashes as a comment).

 Stuck in review?
 cf. <CAPig+cSuYUYSPTuKx08wcmQM-G12_-W2T4BS07fA=6grM1b8Gw@xxxxxxxxxxxxxx>


* es/format-patch-rangediff (2018-08-14) 10 commits
 - format-patch: allow --range-diff to apply to a lone-patch
 - format-patch: add --creation-factor tweak for --range-diff
 - format-patch: teach --range-diff to respect -v/--reroll-count
 - format-patch: extend --range-diff to accept revision range
 - format-patch: add --range-diff option to embed diff in cover letter
 - range-diff: relieve callers of low-level configuration burden
 - range-diff: publish default creation factor
 - range-diff: respect diff_option.file rather than assuming 'stdout'
 - Merge branch 'es/format-patch-interdiff' into es/format-patch-rangediff
 - Merge branch 'js/range-diff' into es/format-patch-rangediff
 (this branch uses es/format-patch-interdiff.)

 "git format-patch" learned a new "--range-diff" option to explain
 the difference between this version and the previous atttempt in
 the cover letter (or after the tree-dashes as a comment).

 Need to wait for the prereq topics to solidify a bit more.


* nd/pack-deltify-regression-fix (2018-07-23) 1 commit
  (merged to 'next' on 2018-08-02 at f3b2bf0fef)
 + pack-objects: fix performance issues on packing large deltas

 In a recent update in 2.18 era, "git pack-objects" started
 producing a larger than necessary packfiles by missing
 opportunities to use large deltas.

 Will merge to 'master'.


* jh/structured-logging (2018-07-25) 25 commits
 - structured-logging: add config data facility
 - structured-logging: t0420 tests for interacitve child_summary
 - structured-logging: t0420 tests for child process detail events
 - structured-logging: add child process classification
 - structured-logging: add detail-events for child processes
 - structured-logging: add structured logging to remote-curl
 - structured-logging: t0420 tests for aux-data
 - structured-logging: add aux-data for size of sparse-checkout file
 - structured-logging: add aux-data for index size
 - structured-logging: add aux-data facility
 - structured-logging: t0420 tests for timers
 - structured-logging: add timer around preload_index
 - structured-logging: add timer around wt-status functions
 - structured-logging: add timer around do_write_index
 - structured-logging: add timer around do_read_index
 - structured-logging: add timer facility
 - structured-logging: add detail-event for lazy_init_name_hash
 - structured-logging: add detail-event facility
 - structured-logging: t0420 basic tests
 - structured-logging: set sub_command field for checkout command
 - structured-logging: set sub_command field for branch command
 - structured-logging: add session-id to log events
 - structured-logging: add structured logging framework
 - structured-logging: add STRUCTURED_LOGGING=1 to Makefile
 - structured-logging: design document

 Will merge to 'next'.


* jn/gc-auto (2018-07-17) 3 commits
 - gc: do not return error for prior errors in daemonized mode
 - gc: exit with status 128 on failure
 - gc: improve handling of errors reading gc.log

 "gc --auto" ended up calling exit(-1) upon error, which has been
 corrected to use exit(1).  Also the error reporting behaviour when
 daemonized has been updated to exit with zero status when stopping
 due to a previously discovered error (which implies there is no
 point running gc to improve the situation); we used to exit with
 failure in such a case.

 Stuck in review?
 cf. <20180717201348.GD26218@xxxxxxxxxxxxxxxxxxxxx>


* sb/submodule-update-in-c (2018-08-14) 7 commits
  (merged to 'next' on 2018-08-17 at 23c81e5ff7)
 + submodule--helper: introduce new update-module-mode helper
 + submodule--helper: replace connect-gitdir-workingtree by ensure-core-worktree
 + builtin/submodule--helper: factor out method to update a single submodule
 + builtin/submodule--helper: store update_clone information in a struct
 + builtin/submodule--helper: factor out submodule updating
 + git-submodule.sh: rename unused variables
 + git-submodule.sh: align error reporting for update mode to use path

 "git submodule update" is getting rewritten piece-by-piece into C.

 Will merge to 'master'.


* tg/rerere (2018-08-06) 11 commits
  (merged to 'next' on 2018-08-17 at 919a958cdc)
 + rerere: recalculate conflict ID when unresolved conflict is committed
 + rerere: teach rerere to handle nested conflicts
 + rerere: return strbuf from handle path
 + rerere: factor out handle_conflict function
 + rerere: only return whether a path has conflicts or not
 + rerere: fix crash with files rerere can't handle
 + rerere: add documentation for conflict normalization
 + rerere: mark strings for translation
 + rerere: wrap paths in output in sq
 + rerere: lowercase error messages
 + rerere: unify error messages when read_cache fails

 Fixes to "git rerere" corner cases, especially when conflict
 markers cannot be parsed in the file.

 Will merge to 'master'.


* ag/rebase-i-in-c (2018-08-10) 20 commits
 - rebase -i: move rebase--helper modes to rebase--interactive
 - rebase -i: remove git-rebase--interactive.sh
 - rebase--interactive2: rewrite the submodes of interactive rebase in C
 - rebase -i: implement the main part of interactive rebase as a builtin
 - rebase -i: rewrite init_basic_state() in C
 - rebase -i: rewrite write_basic_state() in C
 - rebase -i: rewrite the rest of init_revisions_and_shortrevisions() in C
 - rebase -i: implement the logic to initialize $revisions in C
 - rebase -i: remove unused modes and functions
 - rebase -i: rewrite complete_action() in C
 - t3404: todo list with commented-out commands only aborts
 - sequencer: change the way skip_unnecessary_picks() returns its result
 - sequencer: refactor append_todo_help() to write its message to a buffer
 - rebase -i: rewrite checkout_onto() in C
 - rebase -i: rewrite setup_reflog_action() in C
 - sequencer: add a new function to silence a command, except if it fails
 - rebase -i: rewrite the edit-todo functionality in C
 - editor: add a function to launch the sequence editor
 - rebase -i: rewrite append_todo_help() in C
 - sequencer: make three functions and an enum from sequencer.c public

 Rewrite of the remaining "rebase -i" machinery in C.

 With "rebase -i" machinery being rewritten to C, with a different
 interface between "rebase" proper and its backends, this and the
 other topics need a bit more work to play with each other better.


* lt/date-human (2018-07-09) 1 commit
 - Add 'human' date format

 A new date format "--date=human" that morphs its output depending
 on how far the time is from the current time has been introduced.
 "--date=auto" can be used to use this new format when the output is
 goint to the pager or to the terminal and otherwise the default
 format.


* pk/rebase-in-c (2018-08-06) 3 commits
 - builtin/rebase: support running "git rebase <upstream>"
 - rebase: refactor common shell functions into their own file
 - rebase: start implementing it as a builtin
 (this branch is used by pk/rebase-in-c-2-basic, pk/rebase-in-c-3-acts, pk/rebase-in-c-4-opts, pk/rebase-in-c-5-test and pk/rebase-in-c-6-final.)

 Rewrite of the "rebase" machinery in C.


* jk/branch-l-1-repurpose (2018-06-22) 1 commit
  (merged to 'next' on 2018-08-08 at d2a08dd08e)
 + branch: make "-l" a synonym for "--list"

 Updated plan to repurpose the "-l" option to "git branch".

 Will cook in 'next'.


* ds/multi-pack-index (2018-07-20) 23 commits
  (merged to 'next' on 2018-08-08 at 1a56c52967)
 + midx: clear midx on repack
 + packfile: skip loading index if in multi-pack-index
 + midx: prevent duplicate packfile loads
 + midx: use midx in approximate_object_count
 + midx: use existing midx when writing new one
 + midx: use midx in abbreviation calculations
 + midx: read objects from multi-pack-index
 + config: create core.multiPackIndex setting
 + midx: write object offsets
 + midx: write object id fanout chunk
 + midx: write object ids in a chunk
 + midx: sort and deduplicate objects from packfiles
 + midx: read pack names into array
 + multi-pack-index: write pack names in chunk
 + multi-pack-index: read packfile list
 + packfile: generalize pack directory list
 + t5319: expand test data
 + multi-pack-index: load into memory
 + midx: write header information to lockfile
 + multi-pack-index: add 'write' verb
 + multi-pack-index: add builtin
 + multi-pack-index: add format details
 + multi-pack-index: add design document

 When there are too many packfiles in a repository (which is not
 recommended), looking up an object in these would require
 consulting many pack .idx files; a new mechanism to have a single
 file that consolidates all of these .idx files is introduced.

 Will cook in 'next'.

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

* am/sequencer-author-script-fix (2018-07-18) 1 commit
 . sequencer.c: terminate the last line of author-script properly

 The author-script that records the author information created by
 the sequencer machinery lacked the closing single quote on the last
 entry.

 Superseded by another topic.


* jc/push-cas-opt-comment (2018-08-01) 1 commit
 . push: comment on a funny unbalanced option help

 Code clarification.

 Superseded by another topic.


* cc/remote-odb (2018-08-02) 9 commits
 . Documentation/config: add odb.<name>.promisorRemote
 . t0410: test fetching from many promisor remotes
 . Use odb.origin.partialclonefilter instead of core.partialclonefilter
 . Use remote_odb_get_direct() and has_remote_odb()
 . remote-odb: add remote_odb_reinit()
 . remote-odb: implement remote_odb_get_many_direct()
 . remote-odb: implement remote_odb_get_direct()
 . Add initial remote odb support
 . fetch-object: make functions return an error code

 Implement lazy fetches of missing objects to complement the
 experimental partial clone feature.

 Ejected; seems to break existing repositories that use partialclone
 repository extension.

 I haven't seen much interest in this topic on list.  What's the
 doneness of this thing?

 I do not particularly mind adding code to support a niche feature
 as long as it is cleanly made and it is clear that the feature
 won't negatively affect those who do not use it, so a review from
 that point of view may also be appropriate.



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