Documentation / RelNotes-1.6.6.txton commit Merge branch 'jc/maint-am-keep' (5e2f779)
   1Git v1.6.6 Release Notes
   2========================
   3
   4Notes on behaviour change
   5-------------------------
   6
   7 * In this release, "git fsck" defaults to "git fsck --full" and
   8   checks packfiles, and because of this it will take much longer to
   9   complete than before.  If you prefer a quicker check only on loose
  10   objects (the old default), you can say "git fsck --no-full".  This
  11   has been supported by 1.5.4 and newer versions of git, so it is
  12   safe to write it in your script even if you use slightly older git
  13   on some of your machines.
  14
  15Preparing yourselves for compatibility issues in 1.7.0
  16------------------------------------------------------
  17
  18In git 1.7.0, which is planned to be the release after 1.6.6, there will
  19be a handful of behaviour changes that will break backward compatibility.
  20
  21These changes were discussed long time ago and existing behaviours have
  22been identified as more problematic to the userbase than keeping them for
  23the sake of backward compatibility.
  24
  25When necessary, transition strategy for existing users has been designed
  26not to force them running around setting configuration variables and
  27updating their scripts in order to keep the traditional behaviour on the
  28day their sysadmin decides to install the new version of git.  When we
  29switched from "git-foo" to "git foo" in 1.6.0, even though the change had
  30been advertised and the transition guide had been provided for a very long
  31time, the users procrastinated during the entire transtion period, and
  32ended up panicking on the day their sysadmins updated their git.
  33
  34For changes decided to be in 1.7.0, we have been much louder to strongly
  35discourage such procrastination.  If you have been using recent versions
  36of git, you would have already seen warnings issued when you exercised
  37features whose behaviour will change, with the instruction on how to keep
  38the existing behaviour if you choose to.  You hopefully should be well
  39prepared already.
  40
  41Of course, we have also given "this and that will change in 1.7.0; prepare
  42yourselves" warnings in the release notes and announcement messages.
  43Let's see how well users will fare this time.
  44
  45 * "git push" into a branch that is currently checked out (i.e. pointed by
  46   HEAD in a repository that is not bare) will be refused by default.
  47
  48   Similarly, "git push $there :$killed" to delete the branch $killed
  49   in a remote repository $there, when $killed branch is the current
  50   branch pointed at by its HEAD, will be refused by default.
  51
  52   Setting the configuration variables receive.denyCurrentBranch and
  53   receive.denyDeleteCurrent to 'ignore' in the receiving repository
  54   can be used to override these safety features.  Versions of git
  55   since 1.6.2 have issued a loud warning when you tried to do them
  56   without setting the configuration, so repositories of people who
  57   still need to be able to perform such a push should already been
  58   future proofed.
  59
  60   Please refer to:
  61
  62   http://git.or.cz/gitwiki/GitFaq#non-bare
  63   http://thread.gmane.org/gmane.comp.version-control.git/107758/focus=108007
  64
  65   for more details on the reason why this change is needed and the
  66   transition process that already took place so far.
  67
  68 * "git send-email" will not make deep threads by default when sending a
  69   patch series with more than two messages.  All messages will be sent as
  70   a reply to the first message, i.e. cover letter.  It has been possible
  71   to configure send-email to do this by setting sendemail.chainreplyto
  72   configuration variable to false.  The only thing the new release will
  73   do is to change the default when you haven't configured that variable.
  74
  75 * "git status" will not be "git commit --dry-run".  This change does not
  76   affect you if you run the command without pathspec.
  77
  78   Nobody sane found the current behaviour of "git status Makefile" useful
  79   nor meaningful, and it confused users.  "git commit --dry-run" has been
  80   provided as a way to get the current behaviour of this command since
  81   1.6.5.
  82
  83 * "git diff" traditionally treated various "ignore whitespace" options
  84   only as a way to filter the patch output.  "git diff --exit-code -b"
  85   exited with non-zero status even if all changes were about changing the
  86   ammount of whitespace and nothing else.  and "git diff -b" showed the
  87   "diff --git" header line for such a change without patch text.
  88
  89   In 1.7.0, the "ignore whitespaces" will affect the semantics of the
  90   diff operation itself.  A change that does not affect anything but
  91   whitespaces will be reported with zero exit status when run with
  92   --exit-code, and there will not be "diff --git" header for such a
  93   change.
  94
  95
  96Updates since v1.6.5
  97--------------------
  98
  99(subsystems)
 100
 101 * various git-gui updates including new translations, wm states, etc.
 102
 103 * git-svn updates.
 104
 105 * "git fetch" over http learned a new mode that is different from the
 106   traditional "dumb commit walker".
 107
 108(portability)
 109
 110 * imap-send can be built on mingw port.
 111
 112(performance)
 113
 114 * "git diff -B" has smaller memory footprint.
 115
 116(usability, bells and whistles)
 117
 118 * The object replace mechanism can be bypassed with --no-replace-objects
 119   global option given to the "git" program.
 120
 121 * In configuration files, a few variables that name paths can begin with ~/
 122   and ~username/ and they are expanded as expected.
 123
 124 * "git subcmd -h" now shows short usage help for many more subcommands.
 125
 126 * "git bisect reset" can reset to an arbitrary commit.
 127
 128 * "git checkout frotz" when there is no local branch "frotz" but there
 129   is only one remote tracking branch "frotz" is taken as a request to
 130   start the named branch at the corresponding remote tracking branch.
 131
 132 * "git describe" can be told to add "-dirty" suffix with "--dirty" option.
 133
 134 * "git diff" learned --submodule option to show a list of one-line logs
 135   instead of differences between the commit object names.
 136
 137 * "git fetch" learned --all and --multiple options, to run fetch from
 138   many repositories, and --prune option to remove remote tracking
 139   branches that went stale.  These make "git remote update" and "git
 140   remote prune" less necessary (there is no plan to remove "remote
 141   update" nor "remote prune", though).
 142
 143 * "git fsck" by default checks the packfiles (i.e. "--full" is the
 144   default); you can turn it off with "git fsck --no-full".
 145
 146 * "git grep" can use -F (fixed strings) and -i (ignore case) together.
 147
 148 * import-tars contributed fast-import frontend learned more types of
 149   compressed tarballs.
 150
 151 * "git instaweb" knows how to talk with mod_cgid to apache2.
 152
 153 * "git log --decorate" shows the location of HEAD as well.
 154
 155 * "git log" and "git rev-list" learned to take revs and pathspecs from
 156   the standard input with the new "--stdin" option.
 157
 158 * "--pretty=format" option to "log" family of commands learned:
 159
 160   . to wrap text with the "%w()" specifier.
 161   . to show reflog information with "%g[sdD]" specifier.
 162
 163 * "git notes" command to annotate existing commits.
 164
 165 * "git merge" (and "git pull") learned --ff-only option to make it fail
 166   if the merge does not result in a fast-forward.
 167
 168 * "git mergetool" learned to use p4merge.
 169
 170 * "git rebase -i" learned "reword" that acts like "edit" but immediately
 171   starts an editor to tweak the log message without returning control to
 172   the shell, which is done by "edit" to give an opportunity to tweak the
 173   contents.
 174
 175 * In "git submodule add <repository> <path>", <path> is now optional and
 176   inferred from <repository> the same way "git clone <repository>" does.
 177
 178 * "git svn" learned to read SVN 1.5+ and SVK merge tickets.
 179
 180 * Author names shown in gitweb output are links to search commits by the
 181   author.
 182
 183
 184(developers)
 185
 186Fixes since v1.6.5
 187------------------
 188
 189All of the fixes in v1.6.5.X maintenance series are included in this
 190release, unless otherwise noted.
 191
 192---
 193exec >/var/tmp/1
 194echo O=$(git describe master)
 195O=v1.6.6-rc0-62-g7fc9d15
 196git shortlog --no-merges $O..master --not maint