Update to Unicode 12.1 width table.

* bb/unicode-12.1-reiwa:
  unicode: update the width tables to Unicode 12.1

"git p4" update.

* sw/git-p4-unshelve-branched-files:
  git-p4: allow unshelving of branched files

The data collected by fsmonitor was not properly written back to
the on-disk index file, breaking t7519 tests occasionally, which
has been corrected.

* js/fsmonitor-unflake:
  mark_fsmonitor_valid(): mark the index as changed if needed
  fill_stat_cache_info(): prepare for an fsmonitor fix

Prepare use of reachability index in topological walker that works
on a range (A..B).

* ds/topo-traversal-using-commit-graph:
  revision: keep topo-walk free of unintersting commits
  revision: use generation for A..B --topo-order queries

The pattern "git diff/grep" use to extract funcname and words
boundary for Matlab has been extend to cover Octave, which is more
or less equivalent.

* bl/userdiff-octave:
  userdiff: fix grammar and style issues
  userdiff: add Octave

"git clone --recurse-submodules" learned to set up the submodules
to ignore commit object names recorded in the superproject gitlink
and instead use the commits that happen to be at the tip of the
remote-tracking branches from the get-go, by passing the new
"--remote-submodules" option.

* ba/clone-remote-submodules:
  clone: add `--remote-submodules` flag

"git merge --squash" is designed to update the working tree and the
index without creating the commit, and this cannot be countermanded
by adding the "--commit" option; the command now refuses to work
when both options are given.

* vv/merge-squash-with-explicit-commit:
  merge: refuse --commit with --squash

"git bundle verify" needs to see if prerequisite objects exist in
the receiving repository, but the command did not check if we are
in a repository upfront, which has been corrected.

* js/bundle-verify-require-object-store:
  bundle verify: error out if called without an object database

Code cleanup.

* js/bisect-helper-check-get-oid-return-value:
  bisect--helper: verify HEAD could be parsed before continuing

"git am -i --resolved" segfaulted after trying to see a commit as
if it were a tree, which has been corrected.

* jk/am-i-resolved-fix:
  am: fix --interactive HEAD tree resolution
  am: drop tty requirement for --interactive
  am: read interactive input from stdin
  am: simplify prompt response handling

The server side support for "git fetch" used to show incorrect
value for the HEAD symbolic ref when the namespace feature is in
use, which has been corrected.

* jk/HEAD-symref-in-xfer-namespaces:
  upload-pack: strip namespace from symref data

"git update-server-info" used to leave stale packfiles in its
output, which has been corrected.

* ew/server-info-remove-crufts:
  server-info: do not list unlinked packs

More parameter validation.

* es/grep-require-name-when-needed:
  grep: fail if call could output and name is null

Doc update.

* es/git-debugger-doc:
  doc: hint about GIT_DEBUGGER in CodingGuidelines

Code cleanup and futureproof.

* ds/object-info-for-prefetch-fix:
  sha1-file: split OBJECT_INFO_FOR_PREFETCH

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

A "merge -c" instruction during "git rebase --rebase-merges" should
give the user a chance to edit the log message, even when there is
otherwise no need to create a new merge and replace the existing
one (i.e. fast-forward instead), but did not.  Which has been
corrected.

* pw/rebase-edit-message-for-replayed-merge:
  rebase -r: always reword merge -c

The way of specifying the path to find dynamic libraries at runtime
has been simplified.  The old default to pass -R/path/to/dir has been
replaced with the new default to pass -Wl,-rpath,/path/to/dir,
which is the more recent GCC uses.  Those who need to build with an
old GCC can still use "CC_LD_DYNPATH=-R"

* ab/deprecate-R-for-dynpath:
  Makefile: remove the NO_R_TO_GCC_LINKER flag

The ownership rule for the file descriptor to fast-import remote
backend was mixed up, leading to unrelated file descriptor getting
closed, which has been fixed.

* mh/import-transport-fd-fix:
  Use xmmap_gently instead of xmmap in use_pack
  dup() the input fd for fast-import used for remote helpers

"git update-server-info" learned not to rewrite the file with the
same contents.

* ew/update-server-info:
  update-server-info: avoid needless overwrites

Improve the code to show args with potential typo that cannot be
interpreted as a commit-ish.

* jk/help-unknown-ref-fix:
  help_unknown_ref(): check for refname ambiguity
  help_unknown_ref(): duplicate collected refnames

"git format-patch" learns a configuration to set the default for
its --notes=<ref> option.

* dl/format-patch-notes-config:
  format-patch: teach format.notes config option
  git-format-patch.txt: document --no-notes option

"git merge" learned "--quit" option that cleans up the in-progress
merge while leaving the working tree and the index still in a mess.

* nd/merge-quit:
  merge: add --quit
  merge: remove drop_save() in favor of remove_merge_branch_state()

Developer support to emulate unsatisfied prerequisites in tests to
ensure that the remainer of the tests still succeeds when tests
with prerequisites are skipped.

* ab/fail-prereqs-in-test:
  tests: add a special setup where prerequisites fail

"git worktree add" used to fail when another worktree connected to
the same repository was corrupt, which has been corrected.

* nd/corrupt-worktrees:
  worktree add: be tolerant of corrupt worktrees

Update supporting parts of "git rebase" to remove code that should
no longer be used.

* js/rebase-cleanup:
  rebase: fold git-rebase--common into the -p backend
  sequencer: the `am` and `rebase--interactive` scripts are gone
  .gitignore: there is no longer a built-in `git-rebase--interactive`
  t3400: stop referring to the scripted rebase
  Drop unused git-rebase--am.sh

In recent versions of Git, per-worktree refs are exposed in
refs/worktrees/<wtname>/ hierarchy, which means that worktree names
must be a valid refname component.  The code now sanitizes the names
given to worktrees, to make sure these refs are well-formed.

* nd/worktree-name-sanitization:
  worktree add: sanitize worktree names

The "git fast-export/import" pair has been taught to handle commits
with log messages in encoding other than UTF-8 better.

* en/fast-export-encoding:
  fast-export: do automatic reencoding of commit messages only if requested
  fast-export: differentiate between explicitly UTF-8 and implicitly UTF-8
  fast-export: avoid stripping encoding header if we cannot reencode
  fast-import: support 'encoding' commit header
  t9350: fix encoding test to actually test reencoding

* jk/unused-params-final-batch:
  verify-commit: simplify parameters to run_gpg_verify()
  show-branch: drop unused parameter from show_independent()
  rev-list: drop unused void pointer from finish_commit()
  remove_all_fetch_refspecs(): drop unused "remote" parameter
  receive-pack: drop unused "commands" from prepare_shallow_update()
  pack-objects: drop unused rev_info parameters
  name-rev: drop unused parameters from is_better_name()
  mktree: drop unused length parameter
  wt-status: drop unused status parameter
  read-cache: drop unused parameter from threaded load
  clone: drop dest parameter from copy_alternates()
  submodule: drop unused prefix parameter from some functions
  builtin: consistently pass cmd_* prefix to parse_options
  cmd_{read,write}_tree: rename "unused" variable that is used

The "--base" option of "format-patch" computed the patch-ids for
prerequisite patches in an unstable way, which has been updated to
compute in a way that is compatible with "git patch-id --stable".

* sb/format-patch-base-patch-id-fix:
  format-patch: make --base patch-id output stable
  format-patch: inform user that patch-id generation is unstable

A relative pathname given to "git init --template=<path> <repo>"
ought to be relative to the directory "git init" gets invoked in,
but it instead was made relative to the repository, which has been
corrected.

* nd/init-relative-template-fix:
  init: make --template path relative to $CWD

Since "git send-email" learned to take 'auto' as the value for the
transfer-encoding, it by mistake stopped honoring the values given
to the configuration variables sendemail.transferencoding and/or
sendemail.<ident>.transferencoding.  This has been corrected to
(finally) redoing the order of setting the default, reading the
configuration and command line options.

* ab/send-email-transferencoding-fix:
  send-email: fix regression in sendemail.identity parsing
  send-email: document --no-[to|cc|bcc]
  send-email: fix broken transferEncoding tests
  send-email: remove cargo-culted multi-patch pattern in tests
  send-email: do defaults -> config -> getopt in that order
  send-email: rename the @bcclist variable for consistency
  send-email: move the read_config() function above getopts

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

l10n-2.22.0-rnd3

* tag 'l10n-2.22.0-rnd3' of git://github.com/git-l10n/git-po: (25 commits)
  l10n: fr.po: Review French translation
  l10n: de.po: Update German translation
  l10n: de.po: improve description of 'git reset --quiet'
  l10n: TEAMS: Change German translation team leader
  l10n: bg.po: Updated Bulgarian translation (4581t)
  l10n: zh_CN: Revision for git v2.22.0 l10n
  l10n: zh_CN: for git v2.22.0 l10n round 1~3
  l10n: es: 2.22.0 round 3
  l10n: it.po: Updated Italian translation
  l10n: fr v2.22.0 rnd 3
  l10n: vi.po(4581t): Updated Vietnamese translation for v2.22.0 round 3
  l10n: git.pot: v2.22.0 round 3 (3 new, 2 removed)
  l10n: es: 2.22.0 round 2
  l10n: bg.po: Updated Bulgarian translation (4580t)
  l10n: vi.po(4580t): Updated Vietnamese translation for v2.22.0 round 2
  l10n: fr.po v2.22.0 round 2
  l10n: git.pot: v2.22.0 round 2 (6 new, 3 removed)
  l10n: bg.po: Updated Bulgarian translation (4577t)
  l10n: es: 2.22.0 round 1
  l10n: vi.po(4577t): Updated Vietnamese translation for v2.22.0 round 1
  ...

* 'fr_review' of git://github.com/jnavila/git:
  l10n: fr.po: Review French translation

* 'master' of git://github.com/alshopov/git-po:
  l10n: bg.po: Updated Bulgarian translation (4581t)

Signed-off-by: NCédric Malard <c.malard-git@valdun.net>
Signed-off-by: NJean-Noel Avila <jn.avila@free.fr>

Recent code restructuring of merge-recursive engine introduced a
regression dealing with rename/add conflict.

* en/merge-directory-renames-fix:
  merge-recursive: restore accidentally dropped setting of path

Reviewed-by: NRalf Thielow <ralf.thielow@gmail.com>
Signed-off-by: NMatthias Rüster <matthias.ruester@gmail.com>

Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>