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Subject[ANNOUNCE] Git v1.9-rc1
The first release candidate for this cycle, Git v1.9-rc1, is now
available for testing at the usual places.

The release tarballs are found at:

and their SHA-1 checksums are:

acc2343b4a0a0ed1920036fde1b1bf2109feb969 git-1.9.rc1.tar.gz
37bc0f5ef8f777a980304d58df003515364a54d0 git-htmldocs-1.9.rc1.tar.gz
c378ff4aca0737c9773181f4e97d36a8d8413e9a git-manpages-1.9.rc1.tar.gz

The following public repositories all have a copy of the v1.9-rc1
tag and the master branch that the tag points at:

url =
url = git://
url =
url = git://
url = git://
url =

Git v1.9 Release Notes (draft)

Backward compatibility notes

"git submodule foreach $cmd $args" used to treat "$cmd $args" the same
way "ssh" did, concatenating them into a single string and letting the
shell unquote. Careless users who forget to sufficiently quote $args
gets their argument split at $IFS whitespaces by the shell, and got
unexpected results due to this. Starting from this release, the
command line is passed directly to the shell, if it has an argument.

Read-only support for experimental loose-object format, in which users
could optionally choose to write in their loose objects for a short
while between v1.4.3 to v1.5.3 era, has been dropped.

The meanings of "--tags" option to "git fetch" has changed; the
command fetches tags _in addition to_ what are fetched by the same
command line without the option.

The way "git push $there $what" interprets $what part given on the
command line, when it does not have a colon that explicitly tells us
what ref at the $there repository is to be updated, has been enhanced.

A handful of ancient commands that have long been deprecated are
finally gone (repo-config, tar-tree, lost-found, and peek-remote).

Backward compatibility notes (for Git 2.0)

When "git push [$there]" does not say what to push, we have used the
traditional "matching" semantics so far (all your branches were sent
to the remote as long as there already are branches of the same name
over there). In Git 2.0, the default will change to the "simple"
semantics, which pushes:

- only the current branch to the branch with the same name, and only
when the current branch is set to integrate with that remote
branch, if you are pushing to the same remote as you fetch from; or

- only the current branch to the branch with the same name, if you
are pushing to a remote that is not where you usually fetch from.

Use the user preference configuration variable "push.default" to
change this. If you are an old-timer who is used to the "matching"
semantics, you can set the variable to "matching" to keep the
traditional behaviour. If you want to live in the future early, you
can set it to "simple" today without waiting for Git 2.0.

When "git add -u" (and "git add -A") is run inside a subdirectory and
does not specify which paths to add on the command line, it
will operate on the entire tree in Git 2.0 for consistency
with "git commit -a" and other commands. There will be no
mechanism to make plain "git add -u" behave like "git add -u .".
Current users of "git add -u" (without a pathspec) should start
training their fingers to explicitly say "git add -u ."
before Git 2.0 comes. A warning is issued when these commands are
run without a pathspec and when you have local changes outside the
current directory, because the behaviour in Git 2.0 will be different
from today's version in such a situation.

In Git 2.0, "git add <path>" will behave as "git add -A <path>", so
that "git add dir/" will notice paths you removed from the directory
and record the removal. Versions before Git 2.0, including this
release, will keep ignoring removals, but the users who rely on this
behaviour are encouraged to start using "git add --ignore-removal <path>"
now before 2.0 is released.

The default prefix for "git svn" will change in Git 2.0. For a long
time, "git svn" created its remote-tracking branches directly under
refs/remotes, but it will place them under refs/remotes/origin/ unless
it is told otherwise with its --prefix option.

Updates since v1.8.5

Foreign interfaces, subsystems and ports.

* The HTTP transport, when talking GSS-Negotiate, uses "100
Continue" response to avoid having to rewind and resend a large
payload, which may not be always doable.

* Various bugfixes to remote-bzr and remote-hg (in contrib/).

* The build procedure is aware of MirBSD now.

* Various "git p4", "git svn" and "gitk" updates.

UI, Workflows & Features

* Fetching from a shallowly-cloned repository used to be forbidden,
primarily because the codepaths involved were not carefully vetted
and we did not bother supporting such usage. This release attempts
to allow object transfer out of a shallowly-cloned repository in a
more controlled way (i.e. the receiver become a shallow repository
with a truncated history).

* Just like we give a reasonable default for "less" via the LESS
environment variable, we now specify a reasonable default for "lv"
via the "LV" environment variable when spawning the pager.

* Two-level configuration variable names in "branch.*" and "remote.*"
hierarchies, whose variables are predominantly three-level, were
not completed by hitting a <TAB> in bash and zsh completions.

* Fetching 'frotz' branch with "git fetch", while 'frotz/nitfol'
remote-tracking branch from an earlier fetch was still there, would
error out, primarily because the command was not told that it is
allowed to lose any information on our side. "git fetch --prune"
now can be used to remove 'frotz/nitfol' to make room to fetch and
store 'frotz' remote-tracking branch.

* "diff.orderfile=<file>" configuration variable can be used to
pretend as if the "-O<file>" option were given from the command
line of "git diff", etc.

* The negative pathspec syntax allows "git log -- . ':!dir'" to tell
us "I am interested in everything but 'dir' directory".

* "git difftool" shows how many different paths there are in total,
and how many of them have been shown so far, to indicate progress.

* "git push origin master" used to push our 'master' branch to update
the 'master' branch at the 'origin' repository. This has been
enhanced to use the same ref mapping "git push origin" would use to
determine what ref at the 'origin' to be updated with our 'master'.
For example, with this configuration

[remote "origin"]
push = refs/heads/*:refs/review/*

that would cause "git push origin" to push out our local branches
to corresponding refs under refs/review/ hierarchy at 'origin',
"git push origin master" would update 'refs/review/master' over
there. Alternatively, if push.default is set to 'upstream' and our
'master' is set to integrate with 'topic' from the 'origin' branch,
running "git push origin" while on our 'master' would update their
'topic' branch, and running "git push origin master" while on any
of our branches does the same.

* "gitweb" learned to treat ref hierarchies other than refs/heads as
if they are additional branch namespaces (e.g. refs/changes/ in

* "git for-each-ref --format=..." learned a few formatting directives;
e.g. "%(color:red)%(HEAD)%(color:reset) %(refname:short) %(subject)".

* The command string given to "git submodule foreach" is passed
directly to the shell, without being eval'ed. This is a backward
incompatible change that may break existing users.

* "git log" and friends learned the "--exclude=<glob>" option, to
allow people to say "list history of all branches except those that
match this pattern" with "git log --exclude='*/*' --branches".

* "git rev-parse --parseopt" learned a new "--stuck-long" option to
help scripts parse options with an optional parameter.

* The "--tags" option to "git fetch" no longer tells the command to
fetch _only_ the tags. It instead fetches tags _in addition to_
what are fetched by the same command line without the option.

Performance, Internal Implementation, etc.

* When parsing a 40-hex string into the object name, the string is
checked to see if it can be interpreted as a ref so that a warning
can be given for ambiguity. The code kicked in even when the
core.warnambiguousrefs is set to false to squelch this warning, in
which case the cycles spent to look at the ref namespace were an
expensive no-op, as the result was discarded without being used.

* The naming convention of the packfiles has been updated; it used to
be based on the enumeration of names of the objects that are
contained in the pack, but now it also depends on how the packed
result is represented---packing the same set of objects using
different settings (or delta order) would produce a pack with
different name.

* "git diff --no-index" mode used to unnecessarily attempt to read
the index when there is one.

* The deprecated parse-options macro OPT_BOOLEAN has been removed;
use OPT_BOOL or OPT_COUNTUP in new code.

* A few duplicate implementations of prefix/suffix string comparison
functions have been unified to starts_with() and ends_with().

* The new PERLLIB_EXTRA makefile variable can be used to specify
additional directories Perl modules (e.g. the ones necessary to run
git-svn) are installed on the platform when building.

* "git merge-base" learned the "--fork-point" mode, that implements
the same logic used in "git pull --rebase" to find a suitable fork
point out of the reflog entries for the remote-tracking branch the
work has been based on. "git rebase" has the same logic that can be
triggered with the "--fork-point" option.

* A third-party "receive-pack" (the responder to "git push") can
advertise the "no-thin" capability to tell "git push" not to use
the thin-pack optimization. Our receive-pack has always been
capable of accepting and fattening a thin-pack, and will continue
not to ask "git push" to use a non-thin pack.

Also contains various documentation updates and code clean-ups.

Fixes since v1.8.5

Unless otherwise noted, all the fixes since v1.8.5 in the maintenance
track are contained in this release (see the maintenance releases' notes
for details).

* The pathspec matching code, while comparing two trees (e.g. "git
diff A B -- path1 path2") was too agrresive and failed to match
some paths when multiple pathspecs were involved.
(merge e4ddb05 as/tree-walk-fix-aggressive-short-cut later to maint).

* "git repack --max-pack-size=8g" stopped being parsed correctly when
the command was reimplemented in C.
(merge b861e23 sb/repack-in-c later to maint).

* An earlier update in v1.8.4.x to "git rev-list --objects" with
negative ref had performance regression.
(merge 200abe7 jk/mark-edges-uninteresting later to maint).

* A recent update to "git send-email" broke platforms where
/etc/ssl/certs/ directory exists, but it cannot used as SSL_ca_path
(e.g. Fedora rawhide).
(merge 01645b7 rk/send-email-ssl-cert later to maint).

* A handful of bugs around interpreting $branch@{upstream} notation
and its lookalike, when $branch part has interesting characters,
e.g. "@", and ":", have been fixed.
(merge 9892d5d jk/interpret-branch-name-fix later to maint).

* "git clone" would fail to clone from a repository that has a ref
directly under "refs/", e.g. "refs/stash", because different
validation paths do different things on such a refname. Loosen the
client side's validation to allow such a ref.
(merge 4c22408 jk/allow-fetch-onelevel-refname later to maint).

* "git log --left-right A...B" lost the "leftness" of commits
reachable from A when A is a tag as a side effect of a recent
bugfix. This is a regression in 1.8.4.x series.
(merge a743528 jc/revision-range-unpeel later to maint).

* documentations to "git pull" hinted there is an "-m" option because
it incorrectly shared the documentation with "git merge".
(merge 08f19cf jc/maint-pull-docfix later to maint).

* "git diff A B submod" and "git diff A B submod/" ought to have done
the same for a submodule "submod", but didn't.

* "git clone $origin foo\bar\baz" on Windows failed to create the
leading directories (i.e. a moral-equivalent of "mkdir -p").

* "submodule.*.update=checkout", when propagated from .gitmodules to
.git/config, turned into a "submodule.*.update=none", which did not
make much sense.
(merge efa8fd7 fp/submodule-checkout-mode later to maint).

* The implementation of 'git stash $cmd "stash@{...}"' did not quote
the stash argument properly and left it split at IFS whitespace.
(merge 2a07e43 ow/stash-with-ifs later to maint).

* The "--[no-]informative-errors" options to "git daemon" were parsed
a bit too loosely, allowing any other string after these option
(merge 82246b7 nd/daemon-informative-errors-typofix later to maint).

* There is no reason to have a hardcoded upper limit of the number of
parents for an octopus merge, created via the graft mechanism, but
there was.
(merge e228c17 js/lift-parent-count-limit later to maint).

* The basic test used to leave unnecessary trash directories in the
t/ directory.
(merge 738a8be jk/test-framework-updates later to maint).

* "git merge-base --octopus" used to leave cleaning up suboptimal
result to the caller, but now it does the clean-up itself.
(merge 8f29299 bm/merge-base-octopus-dedup later to maint).

* A "gc" process running as a different user should be able to stop a
new "gc" process from starting, but it didn't.
(merge ed7eda8 km/gc-eperm later to maint).

* An earlier "clean-up" introduced an unnecessary memory leak.
(merge e1c1a32 jk/credential-plug-leak later to maint).

* "git add -A" (no other arguments) in a totally empty working tree
used to emit an error.
(merge 64ed07c nd/add-empty-fix later to maint).

* "git log --decorate" did not handle a tag pointed by another tag
(merge 5e1361c bc/log-decoration later to maint).

* When we figure out how many file descriptors to allocate for
keeping packfiles open, a system with non-working getrlimit() could
cause us to die(), but because we make this call only to get a
rough estimate of how many is available and we do not even attempt
to use up all file descriptors available ourselves, it is nicer to
fall back to a reasonable low value rather than dying.
(merge 491a8de jh/rlimit-nofile-fallback later to maint).

* read_sha1_file(), that is the workhorse to read the contents given
an object name, honoured object replacements, but there was no
corresponding mechanism to sha1_object_info() that was used to
obtain the metainfo (e.g. type & size) about the object. This led
callers to weird inconsistencies.
(merge 663a856 cc/replace-object-info later to maint).

* "git cat-file --batch=", an admittedly useless command, did not
behave very well.
(merge 6554dfa jk/cat-file-regression-fix later to maint).

* "git rev-parse <revs> -- <paths>" did not implement the usual
disambiguation rules the commands in the "git log" family used in
the same way.
(merge 62f162f jk/rev-parse-double-dashes later to maint).

* "git mv A B/", when B does not exist as a directory, should error
out, but it didn't.
(merge c57f628 mm/mv-file-to-no-such-dir-with-slash later to maint).

* A workaround to an old bug in glibc prior to glibc 2.17 has been
retired; this would remove a side effect of the workaround that
corrupts system error messages in non-C locales.

* SSL-related options were not passed correctly to underlying socket
layer in "git send-email".
(merge 5508f3e tr/send-email-ssl later to maint).

* "git commit -v" appends the patch to the log message before
editing, and then removes the patch when the editor returned
control. However, the patch was not stripped correctly when the
first modified path was a submodule.
(merge 1a72cfd jl/commit-v-strip-marker later to maint).

* "git fetch --depth=0" was a no-op, and was silently ignored.
Diagnose it as an error.
(merge 5594bca nd/transport-positive-depth-only later to maint).

* Remote repository URL expressed in scp-style host:path notation are
parsed more carefully (e.g. "foo/bar:baz" is local, "[::1]:/~user" asks
to connect to user's home directory on host at address ::1.
(merge a2036d7 tb/clone-ssh-with-colon-for-port later to maint).

* "git diff -- ':(icase)makefile'" was unnecessarily rejected at the
command line parser.
(merge 887c6c1 nd/magic-pathspec later to maint).

* "git cat-file --batch-check=ok" did not check the existence of
the named object.
(merge 4ef8d1d sb/sha1-loose-object-info-check-existence later to maint).

* "git am --abort" sometimes complained about not being able to write
a tree with an 0{40} object in it.
(merge 77b43ca jk/two-way-merge-corner-case-fix later to maint).

* Two processes creating loose objects at the same time could have
failed unnecessarily when the name of their new objects started
with the same byte value, due to a race condition.
(merge b2476a6 jh/loose-object-dirs-creation-race later to maint).


Changes since v1.9-rc0 are as follows:

Alexander Shopov (4):
git-gui i18n: Initial glossary in Bulgarian
git-gui l10n: Add 29 more terms to glossary
git-gui i18n: Added Bulgarian translation
gitk: Add Bulgarian translation (304t)

Andy Spencer (1):
tree_entry_interesting: match against all pathspecs

Anthony Baire (1):
subtree: fix argument validation in add/pull/push

Astril Hayato (1):
gitk: Comply with XDG base directory specification

Erik Faye-Lund (2):
prefer xwrite instead of write
mingw: remove mingw_write

Jeff King (18):
fetch-pack: do not filter out one-level refs
interpret_branch_name: factor out upstream handling
interpret_branch_name: rename "cp" variable to "at"
interpret_branch_name: always respect "namelen" parameter
interpret_branch_name: avoid @{upstream} past colon
interpret_branch_name: find all possible @-marks
diff_filespec: reorder dirty_submodule macro definitions
diff_filespec: drop funcname_pattern_ident field
diff_filespec: drop xfrm_flags field
diff_filespec: reorder is_binary field
diff_filespec: use only 2 bits for is_binary flag
t/perf: time rev-list with UNINTERESTING commits
list-objects: only look at cmdline trees with edge_hint
repack: fix typo in max-pack-size option
repack: make parsed string options const-correct
repack: propagate pack-objects options as strings
t7501: fix "empty commit" test with NO_PERL
t7700: do not use "touch" unnecessarily

Johannes Sixt (1):
Makefile: Fix compilation of Windows resource file

John Keeping (3):
completion: complete merge-base options
completion: handle --[no-]fork-point options to git-rebase
Makefile: remove redundant object in git-http{fetch,push}

Jonathan Nieder (3):
gitignore doc: add global gitignore to synopsis
git-gui: chmod +x po2msg, windows/
gitk: chmod +x

Junio C Hamano (6):
Documentation: exclude irrelevant options from "git pull"
Documentation: "git pull" does not have the "-m" option
revision: mark contents of an uninteresting tree uninteresting
revision: propagate flag bits from tags to pointees
Documentation: make it easier to maintain enumerated documents
Git 1.9-rc1

Marc Branchaud (1):
gitk: Replace "next" and "prev" buttons with down and up arrows

Max Kirillov (2):
git-gui: fallback right pane to packed widgets with Tk 8.4
gitk: Fix mistype

Michael Haggerty (22):
safe_create_leading_directories(): fix format of "if" chaining
safe_create_leading_directories(): reduce scope of local variable
safe_create_leading_directories(): add explicit "slash" pointer
safe_create_leading_directories(): rename local variable
safe_create_leading_directories(): split on first of multiple slashes
safe_create_leading_directories(): always restore slash at end of loop
safe_create_leading_directories(): introduce enum for return values
cmd_init_db(): when creating directories, handle errors conservatively
safe_create_leading_directories(): add new error value SCLD_VANISHED
gitattributes: document more clearly where macros are allowed
refname_match(): always use the rules in ref_rev_parse_rules
lock_ref_sha1_basic(): on SCLD_VANISHED, retry
lock_ref_sha1_basic(): if locking fails with ENOENT, retry
remove_dir_recurse(): tighten condition for removing unreadable dir
remove_dir_recurse(): handle disappearing files and directories
rename_ref(): extract function rename_tmp_log()
rename_tmp_log(): handle a possible mkdir/rmdir race
rename_tmp_log(): limit the number of remote_empty_directories() attempts
rename_tmp_log(): on SCLD_VANISHED, retry
safe_create_leading_directories(): on Windows, \ can separate path components
Add cross-references between docs for for-each-ref and show-ref
doc: remote author/documentation sections from more pages

Nguyễn Thái Ngọc Duy (1):
tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting()

Pat Thoyts (1):
git-gui 0.19

Paul Mackerras (2):
gitk: Update copyright dates
gitk: Indent word-wrapped lines in commit display header

Pete Wyckoff (11):
git p4 test: wildcards are supported
git p4 test: ensure p4 symlink parsing works
git p4: work around p4 bug that causes empty symlinks
git p4 test: explicitly check p4 wildcard delete
git p4 test: is_cli_file_writeable succeeds
git p4 test: run as user "author"
git p4 test: do not pollute /tmp
git p4: handle files with wildcards when doing RCS scrubbing
git p4: fix an error message when "p4 where" fails
git p4 test: examine behavior with locked (+l) files
git p4 doc: use two-line style for options with multiple spellings

Ruben Kerkhof (1):
send-email: /etc/ssl/certs/ directory may not be usable as ca_path

Thomas Ackermann (2):
create HTML for http-protocol.txt
http-protocol.txt: don't use uppercase for variable names in "The Negotiation Algorithm"

Thomas Rast (2):
Documentation/gitk: document -L option
Documentation: @{-N} can refer to a commit

lin zuojian (1):
git-svn: memoize _rev_list and rebuild

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