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Friday, September 30, 2011

Git 1.7.7

The latest feature release Git 1.7.7 is available.

The release tarballs are found at:

    http://code.google.com/p/git-core/downloads/list

and their SHA-1 checksums are:

bbf85bd767ca6b7e9caa1489bb4ba7ec64e0ab35  git-1.7.7.tar.gz
33183db94fd25e001bd8a9fd6696b992f61e28d8  git-htmldocs-1.7.7.tar.gz
75d3cceb46f7a46eeb825033dff76af5eb5ea3d9  git-manpages-1.7.7.tar.gz

Also the following public repositories all have a copy of the v1.7.7 tag and the master branch that the tag points at:

  url = git://repo.or.cz/alt-git.git
  url = https://code.google.com/p/git-core/
  url = git://git.sourceforge.jp/gitroot/git-core/git.git
  url = git://git-core.git.sourceforge.net/gitroot/git-core/git-core
  url = https://github.com/gitster/git


The release tag and the tarballs can be verified with my GPG key if anybody is so inclined. To get my public key:

  $ git fetch git://repo.or.cz/alt-git.git refs/tags/junio-gpg-pub
  $ git rev-parse FETCH_HEAD
  680865b90b18efbc9402ea979adf0302c6dfe72e
  $ git cat-file blob FETCH_HEAD | gpg --import

and then make sure that you got my key by checking the output from "gpg --fingerprint", which should contain these lines:

  pub   1024D/F3119B9A 2004-01-28
        Key fingerprint = 3565 2A26 2040 E066 C9A7  4A7D C0C6 D9A4 F311 9B9A
  uid                  Junio C Hamano <gitster@pobox.com>

The tarball description at http://code.google.com/p/git-core/downloads/list contains the same list of SHA-1 checksums shown above and signed with my GPG key.

Have fun.

Git v1.7.7 Release Notes
========================

Updates since v1.7.6
--------------------

 * The scripting part of the codebase is getting prepared for i18n/l10n.

 * Interix, Cygwin and Minix ports got updated.

 * Various updates to git-p4 (in contrib/), fast-import, and git-svn.

 * Gitweb learned to read from /etc/gitweb-common.conf when it exists,
   before reading from gitweb_config.perl or from /etc/gitweb.conf
   (this last one is read only when per-repository gitweb_config.perl
   does not exist).

 * Various codepaths that invoked zlib deflate/inflate assumed that these
   functions can compress or uncompress more than 4GB data in one call on
   platforms with 64-bit long, which has been corrected.

 * Git now recognizes loose objects written by other implementations that
   use a non-standard window size for zlib deflation (e.g. Agit running on
   Android with 4kb window). We used to reject anything that was not
   deflated with 32kb window.

 * Interaction between the use of pager and coloring of the output has
   been improved, especially when a command that is not built-in was
   involved.

 * "git am" learned to pass the "--exclude=<path>" option through to underlying
   "git apply".

 * You can now feed many empty lines before feeding an mbox file to
   "git am".

 * "git archive" can be told to pass the output to gzip compression and
   produce "archive.tar.gz".

 * "git bisect" can be used in a bare repository (provided that the test
   you perform per each iteration does not need a working tree, of
   course).

 * The length of abbreviated object names in "git branch -v" output
   now honors the core.abbrev configuration variable.

 * "git check-attr" can take relative paths from the command line.

 * "git check-attr" learned an "--all" option to list the attributes for a
   given path.

 * "git checkout" (both the code to update the files upon checking out a
   different branch and the code to checkout a specific set of files) learned
   to stream the data from object store when possible, without having to
   read the entire contents of a file into memory first. An earlier round
   of this code that is not in any released version had a large leak but
   now it has been plugged.

 * "git clone" can now take a "--config key=value" option to set the
   repository configuration options that affect the initial checkout.

 * "git commit <paths>..." now lets you feed relative pathspecs that
   refer to outside your current subdirectory.

 * "git diff --stat" learned a --stat-count option to limit the output of
   a diffstat report.

 * "git diff" learned a "--histogram" option to use a different diff
   generation machinery stolen from jgit, which might give better
   performance.

 * "git diff" had a weird worst case behaviour that can be triggered
   when comparing files with potentially many places that could match.

 * "git fetch", "git push" and friends no longer show connection
   errors for addresses that couldn't be connected to when at least one
   address succeeds (this is arguably a regression but a deliberate
   one).

 * "git grep" learned "--break" and "--heading" options, to let users mimic
   the output format of "ack".

 * "git grep" learned a "-W" option that shows wider context using the same
   logic used by "git diff" to determine the hunk header.

 * Invoking the low-level "git http-fetch" without "-a" option (which
   git itself never did---normal users should not have to worry about
   this) is now deprecated.

 * The "--decorate" option to "git log" and its family learned to
   highlight grafted and replaced commits.

 * "git rebase master topci" no longer spews usage hints after giving
   the "fatal: no such branch: topci" error message.

 * The recursive merge strategy implementation got a fairly large
   fix for many corner cases that may rarely happen in real world
   projects (it has been verified that none of the 16000+ merges in
   the Linux kernel history back to v2.6.12 is affected with the
   corner case bugs this update fixes).

 * "git stash" learned an "--include-untracked option".

 * "git submodule update" used to stop at the first error updating a
   submodule; it now goes on to update other submodules that can be
   updated, and reports the ones with errors at the end.

 * "git push" can be told with the "--recurse-submodules=check" option to
   refuse pushing of the supermodule, if any of its submodules'
   commits hasn't been pushed out to their remotes.

 * "git upload-pack" and "git receive-pack" learned to pretend that only a
   subset of the refs exist in a repository. This may help a site to
   put many tiny repositories into one repository (this would not be
   useful for larger repositories as repacking would be problematic).

 * "git verify-pack" has been rewritten to use the "index-pack" machinery
   that is more efficient in reading objects in packfiles.

 * test scripts for gitweb tried to run even when CGI-related perl modules
   are not installed; they now exit early when the latter are unavailable.

Also contains various documentation updates and minor miscellaneous
changes.


Fixes since v1.7.6
------------------

Unless otherwise noted, all fixes in the 1.7.6.X maintenance track are
included in this release.

 * "git branch -m" and "git checkout -b" incorrectly allowed the tip
   of the branch that is currently checked out updated.

Friday, September 23, 2011

Git 1.7.7-rc3 and 1.7.6.4 are out

I gave up waiting on kernel.org and really wanted to do the 1.7.7 final toward this weekend, but found a corner case regression in the recursive merge backend (again). 1.7.7-rc3 contains a quick fix for it, and needs to be cooked for a few days at least, so the final will have to wait at least until mid next week.

1.7.6.4 merges a handful of fixes that have already been merged to the master branch and are included in 1.7.7-rc3.

They are both available at

        http://code.google.com/p/git-core/downloads/list

and also are found in my public repositories at various hosting sites:

        url = git://repo.or.cz/alt-git.git
        url = https://code.google.com/p/git-core/
        url = git://git.sourceforge.jp/gitroot/git-core/git.git
        url = git://git-core.git.sourceforge.net/gitroot/git-core/git-core
        url = https://github.com/gitster/git

Wednesday, September 21, 2011

Return of html/man branches

I have not built and published these two branches myself for quite some time, as I let the post update hook of my public repository automatically fetch updates from the 'master' branch to another work area, format the documentation, make commits and push the result back to the public repository, all automated at the kernel.org infrastructure.

Unfortunately, kernel.org has been down for quite a while. So as a "time-permits" and "experimental" basis, I've started publishing these two branches after formatting the documentation locally on my primary development machine to the other public repositories.

I won't promise that I'll rebuild the docs every time I push the 'master' branch out, like the system I used to have at kernel.org did for me, but this will have to do in the meantime.

Monday, September 19, 2011

Fun with url.$that.insteadOf

It is not exactly fun that I and others have to do this, but while k.org is down:

$ git -c url.http://code.google.com/p/git-core.insteadof=git://git.kernel.org/pub/scm/git/git.git fetch

lets me reuse all the fetch refspec configuration items I have for the "origin" remote.

To make this semi-permanent, I could have the following in my $HOME/.gitconfig but I have been hoping that k.org would come back before I actually do it and haven't done so:

[url "http://code.google.com/p/git-core"]
  insteadOf = git://git.kernel.org/pub/scm/git/git.git

Not exactly fun, but...

Monday, September 12, 2011

Git User's Survey 2011

Here is from Jakub Narebski who is again running "Git User's Survey" this year for us.


The Git User's Survey 2011 is now up! Please devote a few minutes of
your time to fill out the simple questionnaire; it'll help the Git
community understand your needs, what you like about Git (and what you
don't), and overall help us improve it.

The survey will be open from 5 September till 3 October 2011.

The results will be published at GitSurvey2011 page on Git Wiki.

1.7.7-rc1 is out

As I have been postponing of tagging this feature freeze release candidate for a while, hoping that k.org would regain its health soon enough, we are seriously slipping. I was hoping to tag the final by the end of August, but now it is almost mid September.

In any case, the shape of the upcoming release is fairly clear now. Please help finding regressions so that we can have a solid final release by the end of this month if not earlier.


A release candidate tarball is found at:

   http://code.google.com/p/git-core/downloads/list

and its SHA-1 checksum is:

80dfcce410d2f36ffed4c8b48c8c89
6a45159e41  git-1.7.7.rc1.tar.gz

Also the following public repositories all have a copy of the v1.7.7-rc1
tag and the master branch that the tag points at:

       url = git://repo.or.cz/alt-git.git
       url = https://code.google.com/p/git-core/
       url = git://git.sourceforge.jp/gitroot/git-core/git.git
       url = git://git-core.git.sourceforge.net/gitroot/git-core/git-core
       url = https://github.com/gitster/git

Git v1.7.7 Release Notes (draft)
========================

Updates since v1.7.6

--------------------
 * The scripting part of the codebase is getting prepared for i18n/l10n.
 * Interix, Cygwin and Minix ports got updated.
 * Various updates to git-p4 (in contrib/), fast-import, and git-svn.
 * Gitweb learned to read from /etc/gitweb-common.conf when it exists,
  before reading from gitweb_config.perl or from /etc/gitweb.conf
  (this last one is read only when per-repository gitweb_config.perl
  does not exist).
 * Various codepaths that invoked zlib deflate/inflate assumed that these
  functions can compress or uncompress more than 4GB data in one call on
  platforms with 64-bit long, which has been corrected.
 * Git now recognizes loose objects written by other implementations that
  use a non-standard window size for zlib deflation (e.g. Agit running on
  Android with 4kb window). We used to reject anything that was not
  deflated with 32kb window.
 * Interaction between the use of pager and coloring of the output has
  been improved, especially when a command that is not built-in was
  involved.
 * "git am" learned to pass the "--exclude=<path>" option through to underlying
  "git apply".
 * You can now feed many empty lines before feeding an mbox file to
  "git am".
 * "git archive" can be told to pass the output to gzip compression and
  produce "archive.tar.gz".
 * "git bisect" can be used in a bare repository (provided that the test
  you perform per each iteration does not need a working tree, of
  course).
 * The length of abbreviated object names in "git branch -v" output
  now honors the core.abbrev configuration variable.
 * "git check-attr" can take relative paths from the command line.
 * "git check-attr" learned an "--all" option to list the attributes for a
  given path.
 * "git checkout" (both the code to update the files upon checking out a
  different branch and the code to checkout a specific set of files) learned
  to stream the data from object store when possible, without having to
  read the entire contents of a file into memory first. An earlier round
  of this code that is not in any released version had a large leak but
  now it has been plugged.
 * "git clone" can now take a "--config key=value" option to set the
  repository configuration options that affect the initial checkout.
 * "git commit <paths>..." now lets you feed relative pathspecs that
  refer to outside your current subdirectory.
 * "git diff --stat" learned a --stat-count option to limit the output of
  a diffstat report.
 * "git diff" learned a "--histogram" option to use a different diff
  generation machinery stolen from jgit, which might give better
  performance.
 * "git diff" had a weird worst case behaviour that can be triggered
  when comparing files with potentially many places that could match.
 * "git fetch", "git push" and friends no longer show connection
  errors for addresses that couldn't be connected to when at least one
  address succeeds (this is arguably a regression but a deliberate
  one).
 * "git grep" learned "--break" and "--heading" options, to let users mimic
  the output format of "ack".
 * "git grep" learned a "-W" option that shows wider context using the same
  logic used by "git diff" to determine the hunk header.
 * Invoking the low-level "git http-fetch" without "-a" option (which
  git itself never did---normal users should not have to worry about
  this) is now deprecated.
 * The "--decorate" option to "git log" and its family learned to
  highlight grafted and replaced commits.
 * "git rebase master topci" no longer spews usage hints after giving
  the "fatal: no such branch: topci" error message.
 * The recursive merge strategy implementation got a fairly large
  fix for many corner cases that may rarely happen in real world
  projects (it has been verified that none of the 16000+ merges in
  the Linux kernel history back to v2.6.12 is affected with the
  corner case bugs this update fixes).
 * "git stash" learned an "--include-untracked option".
 * "git submodule update" used to stop at the first error updating a
  submodule; it now goes on to update other submodules that can be
  updated, and reports the ones with errors at the end.
 * "git push" can be told with the "--recurse-submodules=check" option to
  refuse pushing of the supermodule, if any of its submodules'
  commits hasn't been pushed out to their remotes.
 * "git upload-pack" and "git receive-pack" learned to pretend that only a
  subset of the refs exist in a repository. This may help a site to
  put many tiny repositories into one repository (this would not be
  useful for larger repositories as repacking would be problematic).
 * "git verify-pack" has been rewritten to use the "index-pack" machinery
  that is more efficient in reading objects in packfiles.
 * test scripts for gitweb tried to run even when CGI-related perl modules
  are not installed; they now exit early when the latter are unavailable.

Also contains various documentation updates and minor miscellaneous

changes.


Fixes since v1.7.6

------------------

Unless otherwise noted, all fixes in the 1.7.6.X maintenance track are

included in this release.
 * The error reporting logic of "git am" when the command is fed a file
  whose mail-storage format is unknown was fixed.
  (merge dff4b0e gb/maint-am-patch-format-
error-message later to 'maint').
 * "git branch --set-upstream @{-1} foo" did not expand @{-1} correctly.
  (merge e9d4f74 mg/branch-set-upstream-
previous later to 'maint').
 * "git branch -m" and "git checkout -b" incorrectly allowed the tip
  of the branch that is currently checked out updated.
  (merge 55c4a67 ci/forbid-unwanted-current-
branch-update later to 'maint').
 * "git check-ref-format --print" used to parrot a candidate string that
  began with a slash (e.g. /refs/heads/master) without stripping it, to make
  the result a suitably normalized string the caller can append to "$GIT_DIR/".
  (merge f3738c1 mh/check-ref-format-print-
normalize later to 'maint').
 * "git clone" failed to clone locally from a ".git" file that itself
  is not a directory but is a pointer to one.
  (merge 9b0ebc7 nd/maint-clone-gitdir later to 'maint').
 * "git clone" from a local repository that borrows from another
  object store using a relative path in its objects/info/alternates
  file did not adjust the alternates in the resulting repository.
  (merge e6baf4a1 jc/maint-clone-alternates later to 'maint').
 * "git describe --dirty" did not refresh the index before checking the
  state of the working tree files.
  (cherry-pick bb57148 ac/describe-dirty-refresh later to 'maint').
 * "git ls-files ../$path" that is run from a subdirectory reported errors
  incorrectly when there is no such path that matches the given pathspec.
  (merge 0f64bfa cb/maint-ls-files-error-report later to 'maint').

1.7.6.3 is out

Git 1.7.6.3 is out with 20 fixes from 8 people.

Git v1.7.6.3 Release Notes
==========================

Fixes since v1.7.6.2
--------------------

 * "git -c var=value subcmd" misparsed the custom configuration when
   value contained an equal sign.

 * "git fetch" had a major performance regression, wasting many
   needless cycles in a repository where there is no submodules
   present. This was especially bad, when there were many refs.

 * "git reflog $refname" did not default to the "show" subcommand as
   the documentation advertised the command to do.

 * "git reset" did not leave meaningful log message in the reflog.

 * "git status --ignored" did not show ignored items when there is no
   untracked items.

 * "git tag --contains $commit" was unnecessarily inefficient.

Also contains minor fixes and documentation updates.