Merge branch 'master' into next

* master:
  The eighth batch of topics graduated to 'master'
  git-svn: introduce SVN version comparison function

Documentation/RelNotes/1.7.11.txt

@@ -6,6 +6,13 @@ Updates since v1.7.10
 
 UI, Workflows & Features
 
+ * A new mode for push, "simple", which is a cross between "current"
+   and "upstream", has been introduced. "git push" without any refspec
+   will push the current branch out to the same name at the remote
+   repository only when it is set to track the branch with the same
+   name over there.  The plan is to make this mode the new default
+   value when push.default is not configured.
+
  * A third-party tool "git subtree" is distributed in contrib/
 
  * Error messages given when @{u} is used for a branch without its
@@ -30,12 +37,18 @@ UI, Workflows & Features
    needed such treatment are now reported to the end user, so that the
    result in them can be eyeballed with extra care.
 
+ * The output from "diff/log --stat" used to always allocate 4 columns
+   to show the number of modified lines, but not anymore.
+
  * The "fmt-merge-msg" command learns to list the primary contributors
    involved in the side topic you are merging.
 
  * The cases "git push" fails due to non-ff can be broken into three
    categories; each case is given a separate advise message.
 
+ * "git rebase" learned to optionally keep commits that do not
+   introduce any change in the original history.
+
  * "git push --recurse-submodules" learned to optionally look into the
    histories of submodules bound to the superproject and push them
    out.
@@ -53,9 +66,18 @@ Foreign Interface
  * "git svn" learned to use platform specific authentication
    providers, e.g. gnome-keyring, kwallet, etc.
 
- * "git p4" has been moved out of contrib/ area.
+ * "git p4" has been moved out of contrib/ area and has seen more work
+   on importing labels as tags from (and exporting tags as labels to)
+   p4.
 
-Performance
+Performance and Internal Implementation (please report possible regressions)
+
+ * An experimental "version 4" format of the index file has been
+   introduced to reduce on-disk footprint and I/O overhead.
+
+ * The code to compute hash values for lines used by the internal diff
+   engine was optimized on little-endian machines, using the same
+   trick the kernel folks came up with.
 
  * "git apply" had some memory leaks plugged.
 
@@ -68,8 +90,6 @@ Performance
    one-by-one.  Now they are collected in the queue unordered first,
    and sorted immediately before getting used.
 
-Internal Implementation (please report possible regressions)
-
  * "git rev-parse --show-prefix" used to emit nothing when run at the
    top-level of the working tree, but now it gives a blank line.
 
@@ -96,6 +116,24 @@ Unless otherwise noted, all the fixes since v1.7.10 in the maintenance
 releases are contained in this release (see release notes to them for
 details).
 
+ * When using a Perl script on a system where "perl" found on user's
+   $PATH could be ancient or otherwise broken, we allow builders to
+   specify the path to a good copy of Perl with $PERL_PATH.  The
+   gitweb test forgot to use that Perl when running its test.
+   (merge 0754e08 jk/maint-gitweb-test-use-sane-perl later to maint).
+
+ * A contrib script "rerere-train" did not work out of the box unless
+   user futzed with her $PATH.
+   (merge 53876fc jc/rerere-train later to maint).
+
+ * "log --graph" was not very friendly with "--stat" option and its
+   output had line breaks at wrong places.
+   (merge bafa16e lp/diffstat-with-graph later to maint).
+
+ * "git config --rename-section" to rename an existing section into a
+   bogus one did not check the new name.
+   (merge 94a35b1 jk/maint-config-bogus-section later to maint).
+
  * The test scaffolding for git-daemon was flaky.
    (merge 46e3581 js/daemon-test-race-fix later to maint).
 
@@ -136,31 +174,3 @@ details).
  * The "diff --no-index" codepath used limited-length buffers, risking
    pathnames getting truncated.  Update it to use the strbuf API.
    (merge 875b91b jm/maint-strncpy-diff-no-index later to maint).
-
- * The parser in "fast-import" did not diagnose ":9" style references
-   that is not followed by required SP/LF as an error.
-   (merge 06454cb pw/fast-import-dataref-parsing later to maint).
-
- * When "git fetch" encounters repositories with too many references,
-   the command line of "fetch-pack" that is run by a helper
-   e.g. remote-curl, may fail to hold all of them. Now such an
-   internal invocation can feed the references through the standard
-   input of "fetch-pack".
-   (merge 7103d25 it/fetch-pack-many-refs later to maint).
-
- * "git fetch" that recurses into submodules on demand did not check
-   if it needs to go into submodules when non branches (most notably,
-   tags) are fetched.
-   (merge a6801ad jl/maint-submodule-recurse-fetch later to maint).
-
- * "git blame" started missing quite a few changes from the origin
-   since we stopped using the diff minimalization by default in v1.7.2
-   era.
-   (merge 059a500 jc/maint-blame-minimal later to maint).
-
- * "log -p --graph" used with "--stat" had a few formatting error.
-   (merge e2c5966 lp/maint-diff-three-dash-with-graph later to maint).
-
- * Giving "--continue" to a conflicted "rebase -i" session skipped a
-   commit that only results in changes to submodules.
-   (merge a6754cd jk/rebase-i-submodule-conflict-only later to maint).

git-svn.perl

@@ -41,11 +41,28 @@ sub fatal (@) { print STDERR "@_\n"; exit 1 }
 # repository decides to close the connection which we expect to be kept alive.
 $SIG{PIPE} = 'IGNORE';
 
+# Given a dot separated version number, "subtract" it from
+# the SVN::Core::VERSION; non-negaitive return means the SVN::Core
+# is at least at the version the caller asked for.
+sub compare_svn_version {
+	my (@ours) = split(/\./, $SVN::Core::VERSION);
+	my (@theirs) = split(/\./, $_[0]);
+	my ($i, $diff);
+
+	for ($i = 0; $i < @ours && $i < @theirs; $i++) {
+		$diff = $ours[$i] - $theirs[$i];
+		return $diff if ($diff);
+	}
+	return 1 if ($i < @ours);
+	return -1 if ($i < @theirs);
+	return 0;
+}
+
 sub _req_svn {
 	require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
 	require SVN::Ra;
 	require SVN::Delta;
-	if ($SVN::Core::VERSION lt '1.1.0') {
+	if (::compare_svn_version('1.1.0') < 0) {
 		fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)";
 	}
 }
@@ -1474,7 +1491,7 @@ sub cmd_info {
 	}
 	::_req_svn();
 	$result .= "Repository UUID: $uuid\n" unless $diff_status eq "A" &&
-		($SVN::Core::VERSION le '1.5.4' || $file_type ne "dir");
+		(::compare_svn_version('1.5.4') <= 0 || $file_type ne "dir");
 	$result .= "Revision: " . ($diff_status eq "A" ? 0 : $rev) . "\n";
 
 	$result .= "Node Kind: " .
@@ -5464,7 +5481,7 @@ sub _auth_providers () {
 
 	# earlier 1.6.x versions would segfault, and <= 1.5.x didn't have
 	# this function
-	if ($SVN::Core::VERSION gt '1.6.12') {
+	if (::compare_svn_version('1.6.12') > 0) {
 		my $config = SVN::Core::config_get_config($config_dir);
 		my ($p, @a);
 		# config_get_config returns all config files from
@@ -5623,7 +5640,7 @@ sub get_log {
 	# drop it.  Therefore, the receiver callback passed to it
 	# is made aware of this limitation by being wrapped if
 	# the limit passed to is being wrapped.
-	if ($SVN::Core::VERSION le '1.2.0') {
+	if (::compare_svn_version('1.2.0') <= 0) {
 		my $limit = splice(@args, 3, 1);
 		if ($limit > 0) {
 			my $receiver = pop @args;
@@ -5655,7 +5672,8 @@ sub trees_match {
 
 sub get_commit_editor {
 	my ($self, $log, $cb, $pool) = @_;
-	my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
+
+	my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef, 0) : ();
 	$self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
 }
 
@@ -5673,7 +5691,7 @@ sub gs_do_update {
 	my (@pc) = split m#/#, $path;
 	my $reporter = $self->do_update($rev_b, (@pc ? shift @pc : ''),
 	                                1, $editor, $pool);
-	my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
+	my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef) : ();
 
 	# Since we can't rely on svn_ra_reparent being available, we'll
 	# just have to do some magic with set_path to make it so
@@ -5723,7 +5741,7 @@ sub gs_do_switch {
 	$ra ||= $self;
 	$url_b = escape_url($url_b);
 	my $reporter = $ra->do_switch($rev_b, '', 1, $url_b, $editor, $pool);
-	my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
+	my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef) : ();
 	$reporter->set_path('', $rev_a, 0, @lock, $pool);
 	$reporter->finish_report($pool);