Log message:
Update to 2.5.2:

Fixes since v2.5.1
------------------

 * "git init empty && git -C empty log" said "bad default \ 
revision 'HEAD'",
   which was found to be a bit confusing to new users.

 * The "interpret-trailers" helper mistook a multi-paragraph title of
   a commit log message with a colon in it as the end of the trailer
   block.

 * When re-priming the cache-tree opportunistically while committing
   the in-core index as-is, we mistakenly invalidated the in-core
   index too aggressively, causing the experimental split-index code
   to unnecessarily rewrite the on-disk index file(s).

 * "git archive" did not use zip64 extension when creating an archive
   with more than 64k entries, which nobody should need, right ;-)?

 * The code in "multiple-worktree" support that attempted to recover
   from an inconsistent state updated an incorrect file.

 * "git rev-list" does not take "--notes" option, but did \ 
not complain
   when one is given.

 * Because the configuration system does not allow "alias.0foo" and
   "pager.0foo" as the configuration key, the user cannot use '0foo'
   as a custom command name anyway, but "git 0foo" tried to look these
   keys up and emitted useless warnings before saying '0foo is not a
   git command'.  These warning messages have been squelched.

 * We recently rewrote one of the build scripts in Perl, which made it
   necessary to have Perl to build Git.  Reduced Perl dependency by
   rewriting it again using sed.

 * t1509 test that requires a dedicated VM environment had some
   bitrot, which has been corrected.

 * strbuf_read() used to have one extra iteration (and an unnecessary
   strbuf_grow() of 8kB), which was eliminated.

 * The codepath to produce error messages had a hard-coded limit to
   the size of the message, primarily to avoid memory allocation while
   calling die().

 * When trying to see that an object does not exist, a state errno
   leaked from our "first try to open a packfile with O_NOATIME and
   then if it fails retry without it" logic on a system that refuses
   O_NOATIME.  This confused us and caused us to die, saying that the
   packfile is unreadable, when we should have just reported that the
   object does not exist in that packfile to the caller.

 * An off-by-one error made "git remote" to mishandle a remote with a
   single letter nickname.

 * A handful of codepaths that used to use fixed-sized arrays to hold
   pathnames have been corrected to use strbuf and other mechanisms to
   allow longer pathnames without fearing overflows.

Also contains typofixes, documentation updates and trivial code
clean-ups.

Log message:
Update to 2.5.1:

Git v2.5.1 Release Notes
========================

Fixes since v2.5
----------------

 * Running an aliased command from a subdirectory when the .git thing
   in the working tree is a gitfile pointing elsewhere did not work.

 * Often a fast-import stream builds a new commit on top of the
   previous commit it built, and it often unconditionally emits a
   "from" command to specify the first parent, which can be omitted in
   such a case.  This caused fast-import to forget the tree of the
   previous commit and then re-read it from scratch, which was
   inefficient.  Optimize for this common case.

 * The "rev-parse --parseopt" mode parsed the option specification
   and the argument hint in a strange way to allow '=' and other
   special characters in the option name while forbidding them from
   the argument hint.  This made it impossible to define an option
   like "--pair <key>=<value>" with \ 
"pair=key=value" specification,
   which instead would have defined a "--pair=key <value>" option.

 * A "rebase" replays changes of the local branch on top of something
   else, as such they are placed in stage #3 and referred to as
   "theirs", while the changes in the new base, typically a foreign
   work, are placed in stage #2 and referred to as "ours".  Clarify
   the "checkout --ours/--theirs".

 * An experimental "untracked cache" feature used uname(2) in a
   slightly unportable way.

 * "sparse checkout" misbehaved for a path that is excluded from the
   checkout when switching between branches that differ at the path.

 * The low-level "git send-pack" did not honor 'user.signingkey'
   configuration variable when sending a signed-push.

 * An attempt to delete a ref by pushing into a repository whose HEAD
   symbolic reference points at an unborn branch that cannot be
   created due to ref D/F conflict (e.g. refs/heads/a/b exists, HEAD
   points at refs/heads/a) failed.

 * "git subtree" (in contrib/) depended on "git log" output to be
   stable, which was a no-no.  Apply a workaround to force a
   particular date format.

 * "git clone $URL" in recent releases of Git contains a regression in
   the code that invents a new repository name incorrectly based on
   the $URL.  This has been corrected.
   (merge db2e220 jk/guess-repo-name-regression-fix later to maint).

 * Running tests with the "-x" option to make them verbose had some
   unpleasant interactions with other features of the test suite.
   (merge 9b5fe78 jk/test-with-x later to maint).

 * "git pull" in recent releases of Git has a regression in the code
   that allows custom path to the --upload-pack=<program>.  This has
   been corrected.

 * pipe() emulation used in Git for Windows looked at a wrong variable
   when checking for an error from an _open_osfhandle() call.

Also contains typofixes, documentation updates and trivial code
clean-ups.

Log message:
Changes 2.5.0:
UI, Workflows & Features

 * The bash completion script (in contrib/) learned a few options that
   "git revert" takes.

 * Whitespace breakages in deleted and context lines can also be
   painted in the output of "git diff" and friends with the new
   --ws-error-highlight option.

 * List of commands shown by "git help" are grouped along the workflow
   elements to help early learners.

 * "git p4" now detects the filetype (e.g. binary) correctly even when
   the files are opened exclusively.

 * git p4 attempts to better handle branches in Perforce.

 * "git p4" learned "--changes-block-size <n>" to read \ 
the changes in
   chunks from Perforce, instead of making one call to "p4 changes"
   that may trigger "too many rows scanned" error from Perforce.

 * More workaround for Perforce's row number limit in "git p4".

 * Unlike "$EDITOR" and "$GIT_EDITOR" that can hold the path \ 
to the
   command and initial options (e.g. "/path/to/emacs -nw"), 'git p4'
   did not let the shell interpolate the contents of the environment
   variable that name the editor "$P4EDITOR" (and "$EDITOR", \ 
too).
   This release makes it in line with the rest of Git, as well as with
   Perforce.

 * A new short-hand <branch>@{push} denotes the remote-tracking branch
   that tracks the branch at the remote the <branch> would be pushed
   to.

 * "git show-branch --topics HEAD" (with no other arguments) did not
   do anything interesting.  Instead, contrast the given revision
   against all the local branches by default.

 * A replacement for contrib/workdir/git-new-workdir that does not
   rely on symbolic links and make sharing of objects and refs safer
   by making the borrowee and borrowers aware of each other.

   Consider this as still an experimental feature; its UI is still
   likely to change.

 * Tweak the sample "store" backend of the credential helper to honor
   XDG configuration file locations when specified.

 * A heuristic we use to catch mistyped paths on the command line
   "git <cmd> <revs> <pathspec>" is to make sure \ 
that all the non-rev
   parameters in the later part of the command line are names of the
   files in the working tree, but that means "git grep $str -- \*.c"
   must always be disambiguated with "--", because nobody sane will
   create a file whose name literally is asterisk-dot-see.  Loosen the
   heuristic to declare that with a wildcard string the user likely
   meant to give us a pathspec.

 * "git merge FETCH_HEAD" learned that the previous "git \ 
fetch" could
   be to create an Octopus merge, i.e. recording multiple branches
   that are not marked as "not-for-merge"; this allows us to lose an
   old style invocation "git merge <msg> HEAD $commits..." in the
   implementation of "git pull" script; the old style syntax can now
   be deprecated (but not removed yet).

 * Filter scripts were run with SIGPIPE disabled on the Git side,
   expecting that they may not read what Git feeds them to filter.
   We however treated a filter that does not read its input fully
   before exiting as an error.  We no longer do and ignore EPIPE
   when writing to feed the filter scripts.

   This changes semantics, but arguably in a good way.  If a filter
   can produce its output without fully consuming its input using
   whatever magic, we now let it do so, instead of diagnosing it
   as a programming error.

 * Instead of dying immediately upon failing to obtain a lock, the
   locking (of refs etc) retries after a short while with backoff.

 * Introduce http.<url>.SSLCipherList configuration variable to tweak
   the list of cipher suite to be used with libcURL when talking with
   https:// sites.

 * "git subtree" script (in contrib/) used "echo -n" to produce
   progress messages in a non-portable way.

 * "git subtree" script (in contrib/) does not have --squash option
   when pushing, but the documentation and help text pretended as if
   it did.

 * The Git subcommand completion (in contrib/) no longer lists credential
   helpers among candidates; they are not something the end user would
   invoke interactively.

 * The index file can be taught with "update-index --untracked-cache"
   to optionally remember already seen untracked files, in order to
   speed up "git status" in a working tree with tons of cruft.

 * "git mergetool" learned to drive WinMerge as a backend.

 * "git upload-pack" that serves "git fetch" can be told to serve
   commits that are not at the tip of any ref, as long as they are
   reachable from a ref, with uploadpack.allowReachableSHA1InWant
   configuration variable.

Log message:
Changes 2.4.6:
* "git fetch --depth=<depth>" and "git clone \ 
--depth=<depth>" issued
  a shallow transfer request even to an upload-pack that does not
  support the capability.
* "git fsck" used to ignore missing or invalid objects recorded in reflog.
* The tcsh completion writes a bash scriptlet but that would have
  failed for users with noclobber set.
* Recent Mac OS X updates breaks the logic to detect that the machine
  is on the AC power in the sample pre-auto-gc script.
* "git format-patch --ignore-if-upstream A..B" did not like to be fed
  tags as boundary commits.

Log message:
Also depend on devel/git-contrib

Log message:
Mention it is used by devel/git-contrib/Makefile

Log message:
Update to 2.4.5

Changelog:
Git v2.4.5 Release Notes
========================

Fixes since v2.4.4
------------------

 * The setup code used to die when core.bare and core.worktree are set
   inconsistently, even for commands that do not need working tree.

 * There was a dead code that used to handle "git pull --tags" and
   show special-cased error message, which was made irrelevant when
   the semantics of the option changed back in Git 1.9 days.

 * "color.diff.plain" was a misnomer; give it 'color.diff.context' as
   a more logical synonym.

 * The configuration reader/writer uses mmap(2) interface to access
   the files; when we find a directory, it barfed with "Out of memory?".

 * Recent "git prune" traverses young unreachable objects to safekeep
   old objects in the reachability chain from them, which sometimes
   showed unnecessary error messages that are alarming.

 * "git rebase -i" fired post-rewrite hook when it shouldn't (namely,
   when it was told to stop sequencing with 'exec' insn).

Also contains typofixes, documentation updates and trivial code
clean-ups.

Git v2.4.4 Release Notes
========================

Fixes since v2.4.3
------------------

 * l10n updates for German.

 * An earlier leakfix to bitmap testing code was incomplete.

 * "git clean pathspec..." tried to lstat(2) and complain even for
   paths outside the given pathspec.

 * Communication between the HTTP server and http_backend process can
   lead to a dead-lock when relaying a large ref negotiation request.
   Diagnose the situation better, and mitigate it by reading such a
   request first into core (to a reasonable limit).

 * The clean/smudge interface did not work well when filtering an
   empty contents (failed and then passed the empty input through).
   It can be argued that a filter that produces anything but empty for
   an empty input is nonsense, but if the user wants to do strange
   things, then why not?

 * Make "git stash something --help" error out, so that users can
   safely say "git stash drop --help".

 * Clarify that "log --raw" and "log --format=raw" are unrelated
   concepts.

 * Catch a programmer mistake to feed a pointer not an array to
   ARRAY_SIZE() macro, by using a couple of GCC extensions.

Also contains typofixes, documentation updates and trivial code
clean-ups.

Log message:
Fixes since v2.4.3
------------------

 * Error messages from "git branch" called remote-tracking branches as
   "remote branches".

 * "git rerere forget" in a repository without rerere enabled gave a
   cryptic error message; it should be a silent no-op instead.

 * "git pull --log" and "git pull --no-log" worked as \ 
expected, but
   "git pull --log=20" did not.

 * The pull.ff configuration was supposed to override the merge.ff
   configuration, but it didn't.

 * The code to read pack-bitmap wanted to allocate a few hundred
   pointers to a structure, but by mistake allocated and leaked memory
   enough to hold that many actual structures.  Correct the allocation
   size and also have it on stack, as it is small enough.

 * Various documentation mark-up fixes to make the output more
   consistent in general and also make AsciiDoctor (an alternative
   formatter) happier.

 * "git bundle verify" did not diagnose extra parameters on the
   command line.

 * Multi-ref transaction support we merged a few releases ago
   unnecessarily kept many file descriptors open, risking to fail with
   resource exhaustion.

 * The ref API did not handle cases where 'refs/heads/xyzzy/frotz' is
   removed at the same time as 'refs/heads/xyzzy' is added (or vice
   versa) very well.

 * The "log --decorate" enhancement in Git 2.4 that shows the commit
   at the tip of the current branch e.g. "HEAD -> master", did not
   work with --decorate=full.

 * There was a commented-out (instead of being marked to expect
   failure) test that documented a breakage that was fixed since the
   test was written; turn it into a proper test.

 * core.excludesfile (defaulting to $XDG_HOME/git/ignore) is supposed
   to be overridden by repository-specific .git/info/exclude file, but
   the order was swapped from the beginning. This belatedly fixes it.

 * The connection initiation code for "ssh" transport tried to absorb
   differences between the stock "ssh" and Putty-supplied \ 
"plink" and
   its derivatives, but the logic to tell that we are using "plink"
   variants were too loose and falsely triggered when "plink" appeared
   anywhere in the path (e.g. "/home/me/bin/uplink/ssh").

 * "git rebase -i" moved the "current" command from \ 
"todo" to "done" a
   bit too prematurely, losing a step when a "pick" did not even start.

 * "git add -e" did not allow the user to abort the operation by
   killing the editor.

 * Git 2.4 broke setting verbosity and progress levels on "git clone"
   with native transports.

 * Some time ago, "git blame" (incorrectly) lost the convert_to_git()
   call when synthesizing a fake "tip" commit that represents the
   state in the working tree, which broke folks who record the history
   with LF line ending to make their project portabile across
   platforms while terminating lines in their working tree files with
   CRLF for their platform.

 * Code clean-up for xdg configuration path support.

Also contains typofixes, documentation updates and trivial code
clean-ups.

Log message:
Update git packages to 2.4.2

Changelog:
Git v2.4.2 Release Notes
========================

Fixes since v2.4.1
------------------

 * "git rev-list --objects $old --not --all" to see if everything that
   is reachable from $old is already connected to the existing refs
   was very inefficient.

 * "hash-object --literally" introduced in v2.2 was not prepared to
   take a really long object type name.

 * "git rebase --quiet" was not quite quiet when there is nothing to
   do.

 * The completion for "log --decorate=" parameter value was incorrect.

 * "filter-branch" corrupted commit log message that ends with an
   incomplete line on platforms with some "sed" implementations that
   munge such a line.  Work it around by avoiding to use "sed".

 * "git daemon" fails to build from the source under NO_IPV6
   configuration (regression in 2.4).

 * "git stash pop/apply" forgot to make sure that not just the working
   tree is clean but also the index is clean. The latter is important
   as a stash application can conflict and the index will be used for
   conflict resolution.

 * We have prepended $GIT_EXEC_PATH and the path "git" is installed in
   (typically "/usr/bin") to $PATH when invoking subprograms and hooks
   for almost eternity, but the original use case the latter tried to
   support was semi-bogus (i.e. install git to /opt/foo/git and run it
   without having /opt/foo on $PATH), and more importantly it has
   become less and less relevant as Git grew more mainstream (i.e. the
   users would _want_ to have it on their $PATH).  Stop prepending the
   path in which "git" is installed to users' $PATH, as that would
   interfere the command search order people depend on (e.g. they may
   not like versions of programs that are unrelated to Git in /usr/bin
   and want to override them by having different ones in /usr/local/bin
   and have the latter directory earlier in their $PATH).

Also contains typofixes, documentation updates and trivial code
clean-ups.

Log message:
Changes 2.4.1:
* The usual "git diff" when seeing a file turning into a directory
  showed a patchset to remove the file and create all files in the
  directory, but "git diff --no-index" simply refused to work.  Also,
  when asked to compare a file and a directory, imitate POSIX "diff"
  and compare the file with the file with the same name in the
  directory, instead of refusing to run.

* The default $HOME/.gitconfig file created upon "git config --global"
  that edits it had incorrectly spelled user.name and user.email
  entries in it.

* "git commit --date=now" or anything that relies on approxidate lost
  the daylight-saving-time offset.

* "git cat-file bl $blob" failed to barf even though there is no
  object type that is "bl".

* Teach the codepaths that read .gitignore and .gitattributes files
  that these files encoded in UTF-8 may have UTF-8 BOM marker at the
  beginning; this makes it in line with what we do for configuration
  files already.

* Access to objects in repositories that borrow from another one on a
  slow NFS server unnecessarily got more expensive due to recent code
  becoming more cautious in a naive way not to lose objects to pruning.

* We avoid setting core.worktree when the repository location is the
  ".git" directory directly at the top level of the working tree, but
  the code misdetected the case in which the working tree is at the
  root level of the filesystem (which arguably is a silly thing to
  do, but still valid).

Also contains typofixes, documentation updates and trivial code
clean-ups.