fast-export: quote paths in output
[gitweb.git] / git-svn.perl
index 7249d6f41706e7d72cae0fedc33e3213170e2e08..757de82161e05b9d12c489efeff05c7fec341fe4 100755 (executable)
 #!/usr/bin/env perl
 # Copyright (C) 2006, Eric Wong <normalperson@yhbt.net>
 # License: GPL v2 or later
+use 5.008;
 use warnings;
 use strict;
 use vars qw/   $AUTHOR $VERSION
-               $SVN_URL
-               $GIT_SVN_INDEX $GIT_SVN
-               $GIT_DIR $GIT_SVN_DIR $REVDB
-               $_follow_parent $sha1 $sha1_short $_revision
-               $_cp_remote $_upgrade $_rmdir $_q $_cp_similarity
-               $_find_copies_harder $_l $_authors %users/;
+               $sha1 $sha1_short $_revision $_repository
+               $_q $_authors $_authors_prog %users/;
 $AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
 $VERSION = '@@GIT_VERSION@@';
 
+# From which subdir have we been invoked?
+my $cmd_dir_prefix = eval {
+       command_oneline([qw/rev-parse --show-prefix/], STDERR => 0)
+} || '';
+
+my $git_dir_user_set = 1 if defined $ENV{GIT_DIR};
 $ENV{GIT_DIR} ||= '.git';
-$Git::SVN::default_repo_id = 'git-svn';
+$Git::SVN::default_repo_id = 'svn';
 $Git::SVN::default_ref_id = $ENV{GIT_SVN_ID} || 'git-svn';
+$Git::SVN::Ra::_log_window_size = 100;
+$Git::SVN::_minimize_url = 'unset';
+
+if (! exists $ENV{SVN_SSH}) {
+       if (exists $ENV{GIT_SSH}) {
+               $ENV{SVN_SSH} = $ENV{GIT_SSH};
+               if ($^O eq 'msys') {
+                       $ENV{SVN_SSH} =~ s/\\/\\\\/g;
+                       $ENV{SVN_SSH} =~ s/(.*)/"$1"/;
+               }
+       }
+}
 
-my $LC_ALL = $ENV{LC_ALL};
 $Git::SVN::Log::TZ = $ENV{TZ};
-# make sure the svn binary gives consistent output between locales and TZs:
 $ENV{TZ} = 'UTC';
-$ENV{LC_ALL} = 'C';
 $| = 1; # unbuffer STDOUT
 
-sub fatal (@) { print STDERR @_; exit 1 }
-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') {
-       fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
+sub fatal (@) { print STDERR "@_\n"; exit 1 }
+sub _req_svn {
+       require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
+       require SVN::Ra;
+       require SVN::Delta;
+       if ($SVN::Core::VERSION lt '1.1.0') {
+               fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)";
+       }
 }
+my $can_compress = eval { require Compress::Zlib; 1};
 push @Git::SVN::Ra::ISA, 'SVN::Ra';
 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
 use Carp qw/croak/;
+use Digest::MD5;
 use IO::File qw//;
 use File::Basename qw/dirname basename/;
 use File::Path qw/mkpath/;
-use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
+use File::Spec;
+use File::Find;
+use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
 use IPC::Open3;
 use Git;
 
 BEGIN {
-       my $s;
+       # import functions from Git into our packages, en masse
+       no strict 'refs';
        foreach (qw/command command_oneline command_noisy command_output_pipe
-                   command_input_pipe command_close_pipe/) {
-               $s .= "*SVN::Git::Editor::$_ = *SVN::Git::Fetcher::$_ = ".
-                     "*Git::SVN::Migration::$_ = ".
-                     "*Git::SVN::Log::$_ = *Git::SVN::$_ = *$_ = *Git::$_; ";
+                   command_input_pipe command_close_pipe
+                   command_bidi_pipe command_close_bidi_pipe/) {
+               for my $package ( qw(SVN::Git::Editor SVN::Git::Fetcher
+                       Git::SVN::Migration Git::SVN::Log Git::SVN),
+                       __PACKAGE__) {
+                       *{"${package}::$_"} = \&{"Git::$_"};
+               }
        }
-       eval $s;
 }
 
 my ($SVN);
 
-my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
 $sha1 = qr/[a-f\d]{40}/;
 $sha1_short = qr/[a-f\d]{4,40}/;
 my ($_stdin, $_help, $_edit,
-       $_repack, $_repack_nr, $_repack_flags,
-       $_message, $_file, $_no_metadata,
+       $_message, $_file, $_branch_dest,
        $_template, $_shared,
-       $_version, $_upgrade,
-       $_merge, $_strategy, $_dry_run,
-       $_prefix);
-
+       $_version, $_fetch_all, $_no_rebase, $_fetch_parent,
+       $_merge, $_strategy, $_dry_run, $_local,
+       $_prefix, $_no_checkout, $_url, $_verbose,
+       $_git_format, $_commit_url, $_tag);
+$Git::SVN::_follow_parent = 1;
+$_q ||= 0;
 my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
                     'config-dir=s' => \$Git::SVN::Ra::config_dir,
-                    'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache );
-my %fc_opts = ( 'follow-parent|follow' => \$_follow_parent,
+                    'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
+                    'ignore-paths=s' => \$SVN::Git::Fetcher::_ignore_regex );
+my %fc_opts = ( 'follow-parent|follow!' => \$Git::SVN::_follow_parent,
                'authors-file|A=s' => \$_authors,
-               'repack:i' => \$_repack,
-               'no-metadata' => \$_no_metadata,
-               'quiet|q' => \$_q,
-               'repack-flags|repack-args|repack-opts=s' => \$_repack_flags,
+               'authors-prog=s' => \$_authors_prog,
+               'repack:i' => \$Git::SVN::_repack,
+               'noMetadata' => \$Git::SVN::_no_metadata,
+               'useSvmProps' => \$Git::SVN::_use_svm_props,
+               'useSvnsyncProps' => \$Git::SVN::_use_svnsync_props,
+               'log-window-size=i' => \$Git::SVN::Ra::_log_window_size,
+               'no-checkout' => \$_no_checkout,
+               'quiet|q+' => \$_q,
+               'repack-flags|repack-args|repack-opts=s' =>
+                  \$Git::SVN::_repack_flags,
+               'use-log-author' => \$Git::SVN::_use_log_author,
+               'add-author-from' => \$Git::SVN::_add_author_from,
+               'localtime' => \$Git::SVN::_localtime,
                %remote_opts );
 
-my ($_trunk, $_tags, $_branches);
-my %multi_opts = ( 'trunk|T=s' => \$_trunk,
-               'tags|t=s' => \$_tags,
-               'branches|b=s' => \$_branches );
-my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
+my ($_trunk, @_tags, @_branches, $_stdlayout);
+my %icv;
+my %init_opts = ( 'template=s' => \$_template, 'shared:s' => \$_shared,
+                  'trunk|T=s' => \$_trunk, 'tags|t=s@' => \@_tags,
+                  'branches|b=s@' => \@_branches, 'prefix=s' => \$_prefix,
+                  'stdlayout|s' => \$_stdlayout,
+                  'minimize-url|m!' => \$Git::SVN::_minimize_url,
+                 'no-metadata' => sub { $icv{noMetadata} = 1 },
+                 'use-svm-props' => sub { $icv{useSvmProps} = 1 },
+                 'use-svnsync-props' => sub { $icv{useSvnsyncProps} = 1 },
+                 'rewrite-root=s' => sub { $icv{rewriteRoot} = $_[1] },
+                 'rewrite-uuid=s' => sub { $icv{rewriteUUID} = $_[1] },
+                  %remote_opts );
 my %cmt_opts = ( 'edit|e' => \$_edit,
-               'rmdir' => \$_rmdir,
-               'find-copies-harder' => \$_find_copies_harder,
-               'l=i' => \$_l,
-               'copy-similarity|C=i'=> \$_cp_similarity
+               'rmdir' => \$SVN::Git::Editor::_rmdir,
+               'find-copies-harder' => \$SVN::Git::Editor::_find_copies_harder,
+               'l=i' => \$SVN::Git::Editor::_rename_limit,
+               'copy-similarity|C=i'=> \$SVN::Git::Editor::_cp_similarity
 );
 
 my %cmd = (
        fetch => [ \&cmd_fetch, "Download new revisions from SVN",
-                       { 'revision|r=s' => \$_revision, %fc_opts } ],
+                       { 'revision|r=s' => \$_revision,
+                         'fetch-all|all' => \$_fetch_all,
+                         'parent|p' => \$_fetch_parent,
+                          %fc_opts } ],
+       clone => [ \&cmd_clone, "Initialize and fetch revisions",
+                       { 'revision|r=s' => \$_revision,
+                          %fc_opts, %init_opts } ],
        init => [ \&cmd_init, "Initialize a repo for tracking" .
                          " (requires URL argument)",
                          \%init_opts ],
+       'multi-init' => [ \&cmd_multi_init,
+                         "Deprecated alias for ".
+                         "'$0 init -T<trunk> -b<branches> -t<tags>'",
+                         \%init_opts ],
        dcommit => [ \&cmd_dcommit,
                     'Commit several diffs to merge with upstream',
                        { 'merge|m|M' => \$_merge,
                          'strategy|s=s' => \$_strategy,
+                         'verbose|v' => \$_verbose,
                          'dry-run|n' => \$_dry_run,
+                         'fetch-all|all' => \$_fetch_all,
+                         'commit-url=s' => \$_commit_url,
+                         'revision|r=i' => \$_revision,
+                         'no-rebase' => \$_no_rebase,
                        %cmt_opts, %fc_opts } ],
+       branch => [ \&cmd_branch,
+                   'Create a branch in the SVN repository',
+                   { 'message|m=s' => \$_message,
+                     'destination|d=s' => \$_branch_dest,
+                     'dry-run|n' => \$_dry_run,
+                     'tag|t' => \$_tag,
+                     'username=s' => \$Git::SVN::Prompt::_username,
+                     'commit-url=s' => \$_commit_url } ],
+       tag => [ sub { $_tag = 1; cmd_branch(@_) },
+                'Create a tag in the SVN repository',
+                { 'message|m=s' => \$_message,
+                  'destination|d=s' => \$_branch_dest,
+                  'dry-run|n' => \$_dry_run,
+                  'username=s' => \$Git::SVN::Prompt::_username,
+                  'commit-url=s' => \$_commit_url } ],
        'set-tree' => [ \&cmd_set_tree,
                        "Set an SVN repository to a git tree-ish",
-                       { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
+                       { 'stdin' => \$_stdin, %cmt_opts, %fc_opts, } ],
+       'create-ignore' => [ \&cmd_create_ignore,
+                            'Create a .gitignore per svn:ignore',
+                            { 'revision|r=i' => \$_revision
+                            } ],
+       'mkdirs' => [ \&cmd_mkdirs ,
+                     "recreate empty directories after a checkout",
+                     { 'revision|r=i' => \$_revision } ],
+        'propget' => [ \&cmd_propget,
+                      'Print the value of a property on a file or directory',
+                      { 'revision|r=i' => \$_revision } ],
+        'proplist' => [ \&cmd_proplist,
+                      'List all properties of a file or directory',
+                      { 'revision|r=i' => \$_revision } ],
        'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
-                       { 'revision|r=i' => \$_revision } ],
-       rebuild => [ \&cmd_rebuild, "Rebuild git-svn metadata (after git clone)",
-                       { 'copy-remote|remote=s' => \$_cp_remote,
-                         'upgrade' => \$_upgrade } ],
-       'multi-init' => [ \&cmd_multi_init,
-                       'Initialize multiple trees (like git-svnimport)',
-                       { %multi_opts, %init_opts, %remote_opts,
-                        'revision|r=i' => \$_revision,
-                        'prefix=s' => \$_prefix,
+                       { 'revision|r=i' => \$_revision
+                       } ],
+       'show-externals' => [ \&cmd_show_externals, "Show svn:externals listings",
+                       { 'revision|r=i' => \$_revision
                        } ],
        'multi-fetch' => [ \&cmd_multi_fetch,
-                       'Fetch multiple trees (like git-svnimport)',
-                       \%fc_opts ],
+                          "Deprecated alias for $0 fetch --all",
+                          { 'revision|r=s' => \$_revision, %fc_opts } ],
        'migrate' => [ sub { },
                       # no-op, we automatically run this anyways,
                       'Migrate configuration/metadata/layout from
                        previous versions of git-svn',
-                       \%remote_opts ],
+                       { 'minimize' => \$Git::SVN::Migration::_minimize,
+                        %remote_opts } ],
        'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
                        { 'limit=i' => \$Git::SVN::Log::limit,
                          'revision|r=s' => \$_revision,
@@ -133,14 +211,40 @@ BEGIN
                          'non-recursive' => \$Git::SVN::Log::non_recursive,
                          'authors-file|A=s' => \$_authors,
                          'color' => \$Git::SVN::Log::color,
-                         'pager=s' => \$Git::SVN::Log::pager,
+                         'pager=s' => \$Git::SVN::Log::pager
                        } ],
+       'find-rev' => [ \&cmd_find_rev,
+                       "Translate between SVN revision numbers and tree-ish",
+                       {} ],
+       'rebase' => [ \&cmd_rebase, "Fetch and rebase your working directory",
+                       { 'merge|m|M' => \$_merge,
+                         'verbose|v' => \$_verbose,
+                         'strategy|s=s' => \$_strategy,
+                         'local|l' => \$_local,
+                         'fetch-all|all' => \$_fetch_all,
+                         'dry-run|n' => \$_dry_run,
+                         %fc_opts } ],
        'commit-diff' => [ \&cmd_commit_diff,
                           'Commit a diff between two trees',
                        { 'message|m=s' => \$_message,
                          'file|F=s' => \$_file,
                          'revision|r=s' => \$_revision,
                        %cmt_opts } ],
+       'info' => [ \&cmd_info,
+                   "Show info about the latest SVN revision
+                    on the current branch",
+                   { 'url' => \$_url, } ],
+       'blame' => [ \&Git::SVN::Log::cmd_blame,
+                   "Show what revision and author last modified each line of a file",
+                   { 'git-format' => \$_git_format } ],
+       'reset' => [ \&cmd_reset,
+                    "Undo fetches back to the specified SVN revision",
+                    { 'revision|r=s' => \$_revision,
+                      'parent|p' => \$_fetch_parent } ],
+       'gc' => [ \&cmd_gc,
+                 "Compress unhandled.log files in .git/svn and remove " .
+                 "index files in .git/svn",
+               {} ],
 );
 
 my $cmd;
@@ -149,31 +253,69 @@ BEGIN
                $cmd = $ARGV[$i];
                splice @ARGV, $i, 1;
                last;
+       } elsif ($ARGV[$i] eq 'help') {
+               $cmd = $ARGV[$i+1];
+               usage(0);
        }
 };
 
+# make sure we're always running at the top-level working directory
+unless ($cmd && $cmd =~ /(?:clone|init|multi-init)$/) {
+       unless (-d $ENV{GIT_DIR}) {
+               if ($git_dir_user_set) {
+                       die "GIT_DIR=$ENV{GIT_DIR} explicitly set, ",
+                           "but it is not a directory\n";
+               }
+               my $git_dir = delete $ENV{GIT_DIR};
+               my $cdup = undef;
+               git_cmd_try {
+                       $cdup = command_oneline(qw/rev-parse --show-cdup/);
+                       $git_dir = '.' unless ($cdup);
+                       chomp $cdup if ($cdup);
+                       $cdup = "." unless ($cdup && length $cdup);
+               } "Already at toplevel, but $git_dir not found\n";
+               chdir $cdup or die "Unable to chdir up to '$cdup'\n";
+               unless (-d $git_dir) {
+                       die "$git_dir still not found after going to ",
+                           "'$cdup'\n";
+               }
+               $ENV{GIT_DIR} = $git_dir;
+       }
+       $_repository = Git->repository(Repository => $ENV{GIT_DIR});
+}
+
 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
 
-read_repo_config(\%opts);
-my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
-                               'version|V' => \$_version,
-                               'minimize-connections' =>
-                                 \$Git::SVN::Migration::_minimize,
-                               'id|i=s' => \$Git::SVN::default_ref_id);
-exit 1 if (!$rv && $cmd ne 'log');
+read_git_config(\%opts);
+if ($cmd && ($cmd eq 'log' || $cmd eq 'blame')) {
+       Getopt::Long::Configure('pass_through');
+}
+my $rv = GetOptions(%opts, 'help|H|h' => \$_help, 'version|V' => \$_version,
+                    'minimize-connections' => \$Git::SVN::Migration::_minimize,
+                    'id|i=s' => \$Git::SVN::default_ref_id,
+                    'svn-remote|remote|R=s' => sub {
+                       $Git::SVN::no_reuse_existing = 1;
+                       $Git::SVN::default_repo_id = $_[1] });
+exit 1 if (!$rv && $cmd && $cmd ne 'log');
 
 usage(0) if $_help;
 version() if $_version;
 usage(1) unless defined $cmd;
 load_authors() if $_authors;
-unless ($cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/) {
+if (defined $_authors_prog) {
+       $_authors_prog = "'" . File::Spec->rel2abs($_authors_prog) . "'";
+}
+
+unless ($cmd =~ /^(?:clone|init|multi-init|commit-diff)$/) {
        Git::SVN::Migration::migration_check();
 }
+Git::SVN::init_vars();
 eval {
        Git::SVN::verify_remotes_sanity();
        $cmd{$cmd}->[0]->(@ARGV);
 };
 fatal $@ if $@;
+post_fetch_checkout();
 exit 0;
 
 ####################### primary functions ######################
@@ -182,14 +324,17 @@ sub usage {
        my $fd = $exit ? \*STDERR : \*STDOUT;
        print $fd <<"";
 git-svn - bidirectional operations between a single Subversion tree and git
-Usage: $0 <command> [options] [arguments]\n
+Usage: git svn <command> [options] [arguments]\n
 
        print $fd "Available commands:\n" unless $cmd;
 
        foreach (sort keys %cmd) {
                next if $cmd && $cmd ne $_;
+               next if /^multi-/; # don't show deprecated commands
                print $fd '  ',pack('A17',$_),$cmd{$_}->[1],"\n";
-               foreach (keys %{$cmd{$_}->[2]}) {
+               foreach (sort keys %{$cmd{$_}->[2]}) {
+                       # mixed-case options are for .git/config only
+                       next if /[A-Z]/ && /^[a-z]+$/i;
                        # prints out arguments as they should be passed:
                        my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
                        print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
@@ -207,86 +352,108 @@ sub usage {
 }
 
 sub version {
+       ::_req_svn();
        print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
        exit 0;
 }
 
-sub cmd_rebuild {
-       my $url = shift;
-       my $gs = $url ? Git::SVN->init($url)
-                     : eval { Git::SVN->new };
-       $gs ||= Git::SVN->_new;
-       if (!verify_ref($gs->refname.'^0')) {
-               $gs->copy_remote_ref;
-       }
-
-       my ($rev_list, $ctx) = command_output_pipe("rev-list", $gs->refname);
-       my $latest;
-       my $svn_uuid;
-       while (<$rev_list>) {
-               chomp;
-               my $c = $_;
-               fatal "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
-               my ($url, $rev, $uuid) = cmt_metadata($c);
-
-               # ignore merges (from set-tree)
-               next if (!defined $rev || !$uuid);
-
-               # if we merged or otherwise started elsewhere, this is
-               # how we break out of it
-               if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
-                   ($gs->{url} && $url && ($url ne $gs->{url}))) {
-                       next;
-               }
-
-               unless (defined $latest) {
-                       if (!$gs->{url} && !$url) {
-                               fatal "SVN repository location required\n";
-                       }
-                       $gs = Git::SVN->init($url);
-                       $latest = $rev;
-               }
-               $gs->rev_db_set($rev, $c);
-               print "r$rev = $c\n";
-       }
-       command_close_pipe($rev_list, $ctx);
-}
-
 sub do_git_init_db {
        unless (-d $ENV{GIT_DIR}) {
                my @init_db = ('init');
                push @init_db, "--template=$_template" if defined $_template;
-               push @init_db, "--shared" if defined $_shared;
+               if (defined $_shared) {
+                       if ($_shared =~ /[a-z]/) {
+                               push @init_db, "--shared=$_shared";
+                       } else {
+                               push @init_db, "--shared";
+                       }
+               }
                command_noisy(@init_db);
+               $_repository = Git->repository(Repository => ".git");
        }
+       my $set;
+       my $pfx = "svn-remote.$Git::SVN::default_repo_id";
+       foreach my $i (keys %icv) {
+               die "'$set' and '$i' cannot both be set\n" if $set;
+               next unless defined $icv{$i};
+               command_noisy('config', "$pfx.$i", $icv{$i});
+               $set = $i;
+       }
+       my $ignore_regex = \$SVN::Git::Fetcher::_ignore_regex;
+       command_noisy('config', "$pfx.ignore-paths", $$ignore_regex)
+               if defined $$ignore_regex;
 }
 
-sub cmd_init {
-       my $url = shift or die "SVN repository location required " .
-                               "as a command-line argument\n";
-       if (my $repo_path = shift) {
-               unless (-d $repo_path) {
-                       mkpath([$repo_path]);
-               }
-               chdir $repo_path or croak $!;
-               $ENV{GIT_DIR} = $repo_path . "/.git";
+sub init_subdir {
+       my $repo_path = shift or return;
+       mkpath([$repo_path]) unless -d $repo_path;
+       chdir $repo_path or die "Couldn't chdir to $repo_path: $!\n";
+       $ENV{GIT_DIR} = '.git';
+       $_repository = Git->repository(Repository => $ENV{GIT_DIR});
+}
+
+sub cmd_clone {
+       my ($url, $path) = @_;
+       if (!defined $path &&
+           (defined $_trunk || @_branches || @_tags ||
+            defined $_stdlayout) &&
+           $url !~ m#^[a-z\+]+://#) {
+               $path = $url;
        }
+       $path = basename($url) if !defined $path || !length $path;
+       my $authors_absolute = $_authors ? File::Spec->rel2abs($_authors) : "";
+       cmd_init($url, $path);
+       command_oneline('config', 'svn.authorsfile', $authors_absolute)
+           if $_authors;
+       Git::SVN::fetch_all($Git::SVN::default_repo_id);
+}
+
+sub cmd_init {
+       if (defined $_stdlayout) {
+               $_trunk = 'trunk' if (!defined $_trunk);
+               @_tags = 'tags' if (! @_tags);
+               @_branches = 'branches' if (! @_branches);
+       }
+       if (defined $_trunk || @_branches || @_tags) {
+               return cmd_multi_init(@_);
+       }
+       my $url = shift or die "SVN repository location required ",
+                              "as a command-line argument\n";
+       $url = canonicalize_url($url);
+       init_subdir(@_);
        do_git_init_db();
 
+       if ($Git::SVN::_minimize_url eq 'unset') {
+               $Git::SVN::_minimize_url = 0;
+       }
+
        Git::SVN->init($url);
 }
 
 sub cmd_fetch {
-       if (@_) {
-               die "Additional fetch arguments are no longer supported.\n",
-                   "Use --follow-parent if you have moved/copied directories
-                   instead.\n";
+       if (grep /^\d+=./, @_) {
+               die "'<rev>=<commit>' fetch arguments are ",
+                   "no longer supported.\n";
        }
-       my $gs = Git::SVN->new;
-       $gs->fetch(parse_revision_argument());
-       if ($gs->{last_commit} && !verify_ref('refs/heads/master^0')) {
-               command_noisy(qw(update-ref refs/heads/master),
-                             $gs->{last_commit});
+       my ($remote) = @_;
+       if (@_ > 1) {
+               die "Usage: $0 fetch [--all] [--parent] [svn-remote]\n";
+       }
+       $Git::SVN::no_reuse_existing = undef;
+       if ($_fetch_parent) {
+               my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+               unless ($gs) {
+                       die "Unable to determine upstream SVN information from ",
+                           "working tree history\n";
+               }
+               # just fetch, don't checkout.
+               $_no_checkout = 'true';
+               $_fetch_all ? $gs->fetch_all : $gs->fetch;
+       } elsif ($_fetch_all) {
+               cmd_multi_fetch();
+       } else {
+               $remote ||= $Git::SVN::default_repo_id;
+               Git::SVN::fetch_all($remote, Git::SVN::read_all_remotes());
        }
 }
 
@@ -309,7 +476,7 @@ sub cmd_set_tree {
                } elsif (scalar @tmp > 1) {
                        push @revs, reverse(command('rev-list',@tmp));
                } else {
-                       fatal "Failed to rev-parse $c\n";
+                       fatal "Failed to rev-parse $c";
                }
        }
        my $gs = Git::SVN->new;
@@ -319,87 +486,487 @@ sub cmd_set_tree {
                fatal "There are new revisions that were fetched ",
                      "and need to be merged (or acknowledged) ",
                      "before committing.\nlast rev: $r_last\n",
-                     " current: $gs->{last_rev}\n";
+                     " current: $gs->{last_rev}";
        }
        $gs->set_tree($_) foreach @revs;
        print "Done committing ",scalar @revs," revisions to SVN\n";
+       unlink $gs->{index};
 }
 
 sub cmd_dcommit {
        my $head = shift;
-       my $gs = Git::SVN->new;
+       command_noisy(qw/update-index --refresh/);
+       git_cmd_try { command_oneline(qw/diff-index --quiet HEAD/) }
+               'Cannot dcommit with a dirty index.  Commit your changes first, '
+               . "or stash them with `git stash'.\n";
        $head ||= 'HEAD';
-       my @refs = command(qw/rev-list --no-merges/, $gs->refname."..$head");
-       my $last_rev;
-       foreach my $d (reverse @refs) {
-               if (!verify_ref("$d~1")) {
-                       fatal "Commit $d\n",
-                             "has no parent commit, and therefore ",
-                             "nothing to diff against.\n",
-                             "You should be working from a repository ",
-                             "originally created by git-svn\n";
+
+       my $old_head;
+       if ($head ne 'HEAD') {
+               $old_head = eval {
+                       command_oneline([qw/symbolic-ref -q HEAD/])
+               };
+               if ($old_head) {
+                       $old_head =~ s{^refs/heads/}{};
+               } else {
+                       $old_head = eval { command_oneline(qw/rev-parse HEAD/) };
+               }
+               command(['checkout', $head], STDERR => 0);
+       }
+
+       my @refs;
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD', \@refs);
+       unless ($gs) {
+               die "Unable to determine upstream SVN information from ",
+                   "$head history.\nPerhaps the repository is empty.";
+       }
+
+       if (defined $_commit_url) {
+               $url = $_commit_url;
+       } else {
+               $url = eval { command_oneline('config', '--get',
+                             "svn-remote.$gs->{repo_id}.commiturl") };
+               if (!$url) {
+                       $url = $gs->full_url
                }
+       }
+
+       my $last_rev = $_revision if defined $_revision;
+       if ($url) {
+               print "Committing to $url ...\n";
+       }
+       my ($linear_refs, $parents) = linearize_history($gs, \@refs);
+       if ($_no_rebase && scalar(@$linear_refs) > 1) {
+               warn "Attempting to commit more than one change while ",
+                    "--no-rebase is enabled.\n",
+                    "If these changes depend on each other, re-running ",
+                    "without --no-rebase may be required."
+       }
+       my $expect_url = $url;
+       Git::SVN::remove_username($expect_url);
+       while (1) {
+               my $d = shift @$linear_refs or last;
                unless (defined $last_rev) {
                        (undef, $last_rev, undef) = cmt_metadata("$d~1");
                        unless (defined $last_rev) {
                                fatal "Unable to extract revision information ",
-                                     "from commit $d~1\n";
+                                     "from commit $d~1";
                        }
                }
                if ($_dry_run) {
                        print "diff-tree $d~1 $d\n";
                } else {
+                       my $cmt_rev;
                        my %ed_opts = ( r => $last_rev,
                                        log => get_commit_entry($d)->{log},
-                                       ra => $gs->ra,
+                                       ra => Git::SVN::Ra->new($url),
+                                       config => SVN::Core::config_get_config(
+                                               $Git::SVN::Ra::config_dir
+                                       ),
                                        tree_a => "$d~1",
                                        tree_b => $d,
                                        editor_cb => sub {
                                               print "Committed r$_[0]\n";
-                                              $last_rev = $_[0]; },
-                                       svn_path => $gs->{path} );
+                                              $cmt_rev = $_[0];
+                                       },
+                                       svn_path => '');
                        if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
                                print "No changes\n$d~1 == $d\n";
+                       } elsif ($parents->{$d} && @{$parents->{$d}}) {
+                               $gs->{inject_parents_dcommit}->{$cmt_rev} =
+                                                              $parents->{$d};
+                       }
+                       $_fetch_all ? $gs->fetch_all : $gs->fetch;
+                       $last_rev = $cmt_rev;
+                       next if $_no_rebase;
+
+                       # we always want to rebase against the current HEAD,
+                       # not any head that was passed to us
+                       my @diff = command('diff-tree', $d,
+                                          $gs->refname, '--');
+                       my @finish;
+                       if (@diff) {
+                               @finish = rebase_cmd();
+                               print STDERR "W: $d and ", $gs->refname,
+                                            " differ, using @finish:\n",
+                                            join("\n", @diff), "\n";
+                       } else {
+                               print "No changes between current HEAD and ",
+                                     $gs->refname,
+                                     "\nResetting to the latest ",
+                                     $gs->refname, "\n";
+                               @finish = qw/reset --mixed/;
+                       }
+                       command_noisy(@finish, $gs->refname);
+                       if (@diff) {
+                               @refs = ();
+                               my ($url_, $rev_, $uuid_, $gs_) =
+                                             working_head_info('HEAD', \@refs);
+                               my ($linear_refs_, $parents_) =
+                                             linearize_history($gs_, \@refs);
+                               if (scalar(@$linear_refs) !=
+                                   scalar(@$linear_refs_)) {
+                                       fatal "# of revisions changed ",
+                                         "\nbefore:\n",
+                                         join("\n", @$linear_refs),
+                                         "\n\nafter:\n",
+                                         join("\n", @$linear_refs_), "\n",
+                                         'If you are attempting to commit ',
+                                         "merges, try running:\n\t",
+                                         'git rebase --interactive',
+                                         '--preserve-merges ',
+                                         $gs->refname,
+                                         "\nBefore dcommitting";
+                               }
+                               if ($url_ ne $expect_url) {
+                                       if ($url_ eq $gs->metadata_url) {
+                                               print
+                                                 "Accepting rewritten URL:",
+                                                 " $url_\n";
+                                       } else {
+                                               fatal
+                                                 "URL mismatch after rebase:",
+                                                 " $url_ != $expect_url";
+                                       }
+                               }
+                               if ($uuid_ ne $uuid) {
+                                       fatal "uuid mismatch after rebase: ",
+                                             "$uuid_ != $uuid";
+                               }
+                               # remap parents
+                               my (%p, @l, $i);
+                               for ($i = 0; $i < scalar @$linear_refs; $i++) {
+                                       my $new = $linear_refs_->[$i] or next;
+                                       $p{$new} =
+                                               $parents->{$linear_refs->[$i]};
+                                       push @l, $new;
+                               }
+                               $parents = \%p;
+                               $linear_refs = \@l;
                        }
                }
        }
-       return if $_dry_run;
-       $gs->fetch;
-       # we always want to rebase against the current HEAD, not any
-       # head that was passed to us
-       my @diff = command('diff-tree', 'HEAD', $gs->refname, '--');
-       my @finish;
-       if (@diff) {
-               @finish = qw/rebase/;
-               push @finish, qw/--merge/ if $_merge;
-               push @finish, "--strategy=$_strategy" if $_strategy;
-               print STDERR "W: HEAD and ", $gs->refname, " differ, ",
-                            "using @finish:\n", "@diff";
+
+       if ($old_head) {
+               my $new_head = command_oneline(qw/rev-parse HEAD/);
+               my $new_is_symbolic = eval {
+                       command_oneline(qw/symbolic-ref -q HEAD/);
+               };
+               if ($new_is_symbolic) {
+                       print "dcommitted the branch ", $head, "\n";
+               } else {
+                       print "dcommitted on a detached HEAD because you gave ",
+                             "a revision argument.\n",
+                             "The rewritten commit is: ", $new_head, "\n";
+               }
+               command(['checkout', $old_head], STDERR => 0);
+       }
+
+       unlink $gs->{index};
+}
+
+sub cmd_branch {
+       my ($branch_name, $head) = @_;
+
+       unless (defined $branch_name && length $branch_name) {
+               die(($_tag ? "tag" : "branch") . " name required\n");
+       }
+       $head ||= 'HEAD';
+
+       my (undef, $rev, undef, $gs) = working_head_info($head);
+       my $src = $gs->full_url;
+
+       my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
+       my $allglobs = $remote->{ $_tag ? 'tags' : 'branches' };
+       my $glob;
+       if ($#{$allglobs} == 0) {
+               $glob = $allglobs->[0];
+       } else {
+               unless(defined $_branch_dest) {
+                       die "Multiple ",
+                           $_tag ? "tag" : "branch",
+                           " paths defined for Subversion repository.\n",
+                           "You must specify where you want to create the ",
+                           $_tag ? "tag" : "branch",
+                           " with the --destination argument.\n";
+               }
+               foreach my $g (@{$allglobs}) {
+                       # SVN::Git::Editor could probably be moved to Git.pm..
+                       my $re = SVN::Git::Editor::glob2pat($g->{path}->{left});
+                       if ($_branch_dest =~ /$re/) {
+                               $glob = $g;
+                               last;
+                       }
+               }
+               unless (defined $glob) {
+                       my $dest_re = qr/\b\Q$_branch_dest\E\b/;
+                       foreach my $g (@{$allglobs}) {
+                               $g->{path}->{left} =~ /$dest_re/ or next;
+                               if (defined $glob) {
+                                       die "Ambiguous destination: ",
+                                           $_branch_dest, "\nmatches both '",
+                                           $glob->{path}->{left}, "' and '",
+                                           $g->{path}->{left}, "'\n";
+                               }
+                               $glob = $g;
+                       }
+                       unless (defined $glob) {
+                               die "Unknown ",
+                                   $_tag ? "tag" : "branch",
+                                   " destination $_branch_dest\n";
+                       }
+               }
+       }
+       my ($lft, $rgt) = @{ $glob->{path} }{qw/left right/};
+       my $url;
+       if (defined $_commit_url) {
+               $url = $_commit_url;
+       } else {
+               $url = eval { command_oneline('config', '--get',
+                       "svn-remote.$gs->{repo_id}.commiturl") };
+               if (!$url) {
+                       $url = $remote->{url};
+               }
+       }
+       my $dst = join '/', $url, $lft, $branch_name, ($rgt || ());
+
+       if ($dst =~ /^https:/ && $src =~ /^http:/) {
+               $src=~s/^http:/https:/;
+       }
+
+       ::_req_svn();
+
+       my $ctx = SVN::Client->new(
+               auth    => Git::SVN::Ra::_auth_providers(),
+               log_msg => sub {
+                       ${ $_[0] } = defined $_message
+                               ? $_message
+                               : 'Create ' . ($_tag ? 'tag ' : 'branch ' )
+                               . $branch_name;
+               },
+       );
+
+       eval {
+               $ctx->ls($dst, 'HEAD', 0);
+       } and die "branch ${branch_name} already exists\n";
+
+       print "Copying ${src} at r${rev} to ${dst}...\n";
+       $ctx->copy($src, $rev, $dst)
+               unless $_dry_run;
+
+       $gs->fetch_all;
+}
+
+sub cmd_find_rev {
+       my $revision_or_hash = shift or die "SVN or git revision required ",
+                                           "as a command-line argument\n";
+       my $result;
+       if ($revision_or_hash =~ /^r\d+$/) {
+               my $head = shift;
+               $head ||= 'HEAD';
+               my @refs;
+               my (undef, undef, $uuid, $gs) = working_head_info($head, \@refs);
+               unless ($gs) {
+                       die "Unable to determine upstream SVN information from ",
+                           "$head history\n";
+               }
+               my $desired_revision = substr($revision_or_hash, 1);
+               $result = $gs->rev_map_get($desired_revision, $uuid);
        } else {
-               print "No changes between current HEAD and ",
-                     $gs->refname, "\nResetting to the latest ",
-                     $gs->refname, "\n";
-               @finish = qw/reset --mixed/;
+               my (undef, $rev, undef) = cmt_metadata($revision_or_hash);
+               $result = $rev;
+       }
+       print "$result\n" if $result;
+}
+
+sub cmd_rebase {
+       command_noisy(qw/update-index --refresh/);
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       unless ($gs) {
+               die "Unable to determine upstream SVN information from ",
+                   "working tree history\n";
+       }
+       if ($_dry_run) {
+               print "Remote Branch: " . $gs->refname . "\n";
+               print "SVN URL: " . $url . "\n";
+               return;
        }
-       command_noisy(@finish, $gs->refname);
+       if (command(qw/diff-index HEAD --/)) {
+               print STDERR "Cannot rebase with uncommited changes:\n";
+               command_noisy('status');
+               exit 1;
+       }
+       unless ($_local) {
+               # rebase will checkout for us, so no need to do it explicitly
+               $_no_checkout = 'true';
+               $_fetch_all ? $gs->fetch_all : $gs->fetch;
+       }
+       command_noisy(rebase_cmd(), $gs->refname);
+       $gs->mkemptydirs;
 }
 
 sub cmd_show_ignore {
-       my $gs = Git::SVN->new;
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       $gs ||= Git::SVN->new;
+       my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+       $gs->prop_walk($gs->{path}, $r, sub {
+               my ($gs, $path, $props) = @_;
+               print STDOUT "\n# $path\n";
+               my $s = $props->{'svn:ignore'} or return;
+               $s =~ s/[\r\n]+/\n/g;
+               $s =~ s/^\n+//;
+               chomp $s;
+               $s =~ s#^#$path#gm;
+               print STDOUT "$s\n";
+       });
+}
+
+sub cmd_show_externals {
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       $gs ||= Git::SVN->new;
+       my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+       $gs->prop_walk($gs->{path}, $r, sub {
+               my ($gs, $path, $props) = @_;
+               print STDOUT "\n# $path\n";
+               my $s = $props->{'svn:externals'} or return;
+               $s =~ s/[\r\n]+/\n/g;
+               chomp $s;
+               $s =~ s#^#$path#gm;
+               print STDOUT "$s\n";
+       });
+}
+
+sub cmd_create_ignore {
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       $gs ||= Git::SVN->new;
+       my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+       $gs->prop_walk($gs->{path}, $r, sub {
+               my ($gs, $path, $props) = @_;
+               # $path is of the form /path/to/dir/
+               $path = '.' . $path;
+               # SVN can have attributes on empty directories,
+               # which git won't track
+               mkpath([$path]) unless -d $path;
+               my $ignore = $path . '.gitignore';
+               my $s = $props->{'svn:ignore'} or return;
+               open(GITIGNORE, '>', $ignore)
+                 or fatal("Failed to open `$ignore' for writing: $!");
+               $s =~ s/[\r\n]+/\n/g;
+               $s =~ s/^\n+//;
+               chomp $s;
+               # Prefix all patterns so that the ignore doesn't apply
+               # to sub-directories.
+               $s =~ s#^#/#gm;
+               print GITIGNORE "$s\n";
+               close(GITIGNORE)
+                 or fatal("Failed to close `$ignore': $!");
+               command_noisy('add', '-f', $ignore);
+       });
+}
+
+sub cmd_mkdirs {
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       $gs ||= Git::SVN->new;
+       $gs->mkemptydirs($_revision);
+}
+
+sub canonicalize_path {
+       my ($path) = @_;
+       my $dot_slash_added = 0;
+       if (substr($path, 0, 1) ne "/") {
+               $path = "./" . $path;
+               $dot_slash_added = 1;
+       }
+       # File::Spec->canonpath doesn't collapse x/../y into y (for a
+       # good reason), so let's do this manually.
+       $path =~ s#/+#/#g;
+       $path =~ s#/\.(?:/|$)#/#g;
+       $path =~ s#/[^/]+/\.\.##g;
+       $path =~ s#/$##g;
+       $path =~ s#^\./## if $dot_slash_added;
+       $path =~ s#^/##;
+       $path =~ s#^\.$##;
+       return $path;
+}
+
+sub canonicalize_url {
+       my ($url) = @_;
+       $url =~ s#^([^:]+://[^/]*/)(.*)$#$1 . canonicalize_path($2)#e;
+       return $url;
+}
+
+# get_svnprops(PATH)
+# ------------------
+# Helper for cmd_propget and cmd_proplist below.
+sub get_svnprops {
+       my $path = shift;
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       $gs ||= Git::SVN->new;
+
+       # prefix THE PATH by the sub-directory from which the user
+       # invoked us.
+       $path = $cmd_dir_prefix . $path;
+       fatal("No such file or directory: $path") unless -e $path;
+       my $is_dir = -d $path ? 1 : 0;
+       $path = $gs->{path} . '/' . $path;
+
+       # canonicalize the path (otherwise libsvn will abort or fail to
+       # find the file)
+       $path = canonicalize_path($path);
+
        my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
-       $gs->traverse_ignore(\*STDOUT, '', $r);
+       my $props;
+       if ($is_dir) {
+               (undef, undef, $props) = $gs->ra->get_dir($path, $r);
+       }
+       else {
+               (undef, $props) = $gs->ra->get_file($path, $r, undef);
+       }
+       return $props;
+}
+
+# cmd_propget (PROP, PATH)
+# ------------------------
+# Print the SVN property PROP for PATH.
+sub cmd_propget {
+       my ($prop, $path) = @_;
+       $path = '.' if not defined $path;
+       usage(1) if not defined $prop;
+       my $props = get_svnprops($path);
+       if (not defined $props->{$prop}) {
+               fatal("`$path' does not have a `$prop' SVN property.");
+       }
+       print $props->{$prop} . "\n";
+}
+
+# cmd_proplist (PATH)
+# -------------------
+# Print the list of SVN properties for PATH.
+sub cmd_proplist {
+       my $path = shift;
+       $path = '.' if not defined $path;
+       my $props = get_svnprops($path);
+       print "Properties on '$path':\n";
+       foreach (sort keys %{$props}) {
+               print "  $_\n";
+       }
 }
 
 sub cmd_multi_init {
        my $url = shift;
-       unless (defined $_trunk || defined $_branches || defined $_tags) {
+       unless (defined $_trunk || @_branches || @_tags) {
                usage(1);
        }
-       do_git_init_db();
+
        $_prefix = '' unless defined $_prefix;
-       $url =~ s#/+$## if defined $url;
+       if (defined $url) {
+               $url = canonicalize_url($url);
+               init_subdir(@_);
+       }
+       do_git_init_db();
        if (defined $_trunk) {
-               my $trunk_ref = $_prefix . 'trunk';
+               $_trunk =~ s#^/+##;
+               my $trunk_ref = 'refs/remotes/' . $_prefix . 'trunk';
                # try both old-style and new-style lookups:
                my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
                unless ($gs_trunk) {
@@ -409,22 +976,23 @@ sub cmd_multi_init {
                                                   undef, $trunk_ref);
                }
        }
-       return unless defined $_branches || defined $_tags;
+       return unless @_branches || @_tags;
        my $ra = $url ? Git::SVN::Ra->new($url) : undef;
-       complete_url_ls_init($ra, $_branches, '--branches/-b', $_prefix);
-       complete_url_ls_init($ra, $_tags, '--tags/-t', $_prefix . 'tags/');
+       foreach my $path (@_branches) {
+               complete_url_ls_init($ra, $path, '--branches/-b', $_prefix);
+       }
+       foreach my $path (@_tags) {
+               complete_url_ls_init($ra, $path, '--tags/-t', $_prefix.'tags/');
+       }
 }
 
 sub cmd_multi_fetch {
-       my @gs;
-       foreach (command(qw/config -l/)) {
-               next unless m!^svn-remote\.(.+)\.fetch=
-                             \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
-               my ($repo_id, $path, $ref_id) = ($1, $2, $3);
-               push @gs, Git::SVN->new($ref_id, $repo_id, $path);
-       }
-       foreach (@gs) {
-               $_->fetch;
+       $Git::SVN::no_reuse_existing = undef;
+       my $remotes = Git::SVN::read_all_remotes();
+       foreach my $repo_id (sort keys %$remotes) {
+               if ($remotes->{$repo_id}->{url}) {
+                       Git::SVN::fetch_all($repo_id, $remotes);
+               }
        }
 }
 
@@ -432,9 +1000,9 @@ sub cmd_multi_fetch {
 sub cmd_commit_diff {
        my ($ta, $tb, $url) = @_;
        my $usage = "Usage: $0 commit-diff -r<revision> ".
-                   "<tree-ish> <tree-ish> [<URL>]\n";
+                   "<tree-ish> <tree-ish> [<URL>]";
        fatal($usage) if (!defined $ta || !defined $tb);
-       my $svn_path;
+       my $svn_path = '';
        if (!defined $url) {
                my $gs = eval { Git::SVN->new };
                if (!$gs) {
@@ -450,7 +1018,7 @@ sub cmd_commit_diff {
        if (defined $_message && defined $_file) {
                fatal("Both --message/-m and --file/-F specified ",
                      "for the commit message.\n",
-                     "I have no idea what you mean\n");
+                     "I have no idea what you mean");
        }
        if (defined $_file) {
                $_message = file_to_s($_file);
@@ -458,7 +1026,6 @@ sub cmd_commit_diff {
                $_message ||= get_commit_entry($tb)->{log};
        }
        my $ra ||= Git::SVN::Ra->new($url);
-       $svn_path ||= $ra->{svn_path};
        my $r = $_revision;
        if ($r eq 'HEAD') {
                $r = $ra->get_latest_revnum;
@@ -477,18 +1044,203 @@ sub cmd_commit_diff {
        }
 }
 
+sub escape_uri_only {
+       my ($uri) = @_;
+       my @tmp;
+       foreach (split m{/}, $uri) {
+               s/([^~\w.%+-]|%(?![a-fA-F0-9]{2}))/sprintf("%%%02X",ord($1))/eg;
+               push @tmp, $_;
+       }
+       join('/', @tmp);
+}
+
+sub escape_url {
+       my ($url) = @_;
+       if ($url =~ m#^([^:]+)://([^/]*)(.*)$#) {
+               my ($scheme, $domain, $uri) = ($1, $2, escape_uri_only($3));
+               $url = "$scheme://$domain$uri";
+       }
+       $url;
+}
+
+sub cmd_info {
+       my $path = canonicalize_path(defined($_[0]) ? $_[0] : ".");
+       my $fullpath = canonicalize_path($cmd_dir_prefix . $path);
+       if (exists $_[1]) {
+               die "Too many arguments specified\n";
+       }
+
+       my ($file_type, $diff_status) = find_file_type_and_diff_status($path);
+
+       if (!$file_type && !$diff_status) {
+               print STDERR "svn: '$path' is not under version control\n";
+               exit 1;
+       }
+
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       unless ($gs) {
+               die "Unable to determine upstream SVN information from ",
+                   "working tree history\n";
+       }
+
+       # canonicalize_path() will return "" to make libsvn 1.5.x happy,
+       $path = "." if $path eq "";
+
+       my $full_url = $url . ($fullpath eq "" ? "" : "/$fullpath");
+
+       if ($_url) {
+               print escape_url($full_url), "\n";
+               return;
+       }
+
+       my $result = "Path: $path\n";
+       $result .= "Name: " . basename($path) . "\n" if $file_type ne "dir";
+       $result .= "URL: " . escape_url($full_url) . "\n";
+
+       eval {
+               my $repos_root = $gs->repos_root;
+               Git::SVN::remove_username($repos_root);
+               $result .= "Repository Root: " . escape_url($repos_root) . "\n";
+       };
+       if ($@) {
+               $result .= "Repository Root: (offline)\n";
+       }
+       ::_req_svn();
+       $result .= "Repository UUID: $uuid\n" unless $diff_status eq "A" &&
+               ($SVN::Core::VERSION le '1.5.4' || $file_type ne "dir");
+       $result .= "Revision: " . ($diff_status eq "A" ? 0 : $rev) . "\n";
+
+       $result .= "Node Kind: " .
+                  ($file_type eq "dir" ? "directory" : "file") . "\n";
+
+       my $schedule = $diff_status eq "A"
+                      ? "add"
+                      : ($diff_status eq "D" ? "delete" : "normal");
+       $result .= "Schedule: $schedule\n";
+
+       if ($diff_status eq "A") {
+               print $result, "\n";
+               return;
+       }
+
+       my ($lc_author, $lc_rev, $lc_date_utc);
+       my @args = Git::SVN::Log::git_svn_log_cmd($rev, $rev, "--", $fullpath);
+       my $log = command_output_pipe(@args);
+       my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
+       while (<$log>) {
+               if (/^${esc_color}author (.+) <[^>]+> (\d+) ([\-\+]?\d+)$/o) {
+                       $lc_author = $1;
+                       $lc_date_utc = Git::SVN::Log::parse_git_date($2, $3);
+               } elsif (/^${esc_color}    (git-svn-id:.+)$/o) {
+                       (undef, $lc_rev, undef) = ::extract_metadata($1);
+               }
+       }
+       close $log;
+
+       Git::SVN::Log::set_local_timezone();
+
+       $result .= "Last Changed Author: $lc_author\n";
+       $result .= "Last Changed Rev: $lc_rev\n";
+       $result .= "Last Changed Date: " .
+                  Git::SVN::Log::format_svn_date($lc_date_utc) . "\n";
+
+       if ($file_type ne "dir") {
+               my $text_last_updated_date =
+                   ($diff_status eq "D" ? $lc_date_utc : (stat $path)[9]);
+               $result .=
+                   "Text Last Updated: " .
+                   Git::SVN::Log::format_svn_date($text_last_updated_date) .
+                   "\n";
+               my $checksum;
+               if ($diff_status eq "D") {
+                       my ($fh, $ctx) =
+                           command_output_pipe(qw(cat-file blob), "HEAD:$path");
+                       if ($file_type eq "link") {
+                               my $file_name = <$fh>;
+                               $checksum = md5sum("link $file_name");
+                       } else {
+                               $checksum = md5sum($fh);
+                       }
+                       command_close_pipe($fh, $ctx);
+               } elsif ($file_type eq "link") {
+                       my $file_name =
+                           command(qw(cat-file blob), "HEAD:$path");
+                       $checksum =
+                           md5sum("link " . $file_name);
+               } else {
+                       open FILE, "<", $path or die $!;
+                       $checksum = md5sum(\*FILE);
+                       close FILE or die $!;
+               }
+               $result .= "Checksum: " . $checksum . "\n";
+       }
+
+       print $result, "\n";
+}
+
+sub cmd_reset {
+       my $target = shift || $_revision or die "SVN revision required\n";
+       $target = $1 if $target =~ /^r(\d+)$/;
+       $target =~ /^\d+$/ or die "Numeric SVN revision expected\n";
+       my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+       unless ($gs) {
+               die "Unable to determine upstream SVN information from ".
+                   "history\n";
+       }
+       my ($r, $c) = $gs->find_rev_before($target, not $_fetch_parent);
+       die "Cannot find SVN revision $target\n" unless defined($c);
+       $gs->rev_map_set($r, $c, 'reset', $uuid);
+       print "r$r = $c ($gs->{ref_id})\n";
+}
+
+sub cmd_gc {
+       if (!$can_compress) {
+               warn "Compress::Zlib could not be found; unhandled.log " .
+                    "files will not be compressed.\n";
+       }
+       find({ wanted => \&gc_directory, no_chdir => 1}, "$ENV{GIT_DIR}/svn");
+}
+
 ########################### utility functions #########################
 
-sub parse_revision_argument {
-       if (!defined $_revision || $_revision eq 'BASE:HEAD') {
-               return (undef, undef);
+sub rebase_cmd {
+       my @cmd = qw/rebase/;
+       push @cmd, '-v' if $_verbose;
+       push @cmd, qw/--merge/ if $_merge;
+       push @cmd, "--strategy=$_strategy" if $_strategy;
+       @cmd;
+}
+
+sub post_fetch_checkout {
+       return if $_no_checkout;
+       my $gs = $Git::SVN::_head or return;
+       return if verify_ref('refs/heads/master^0');
+
+       # look for "trunk" ref if it exists
+       my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
+       my $fetch = $remote->{fetch};
+       if ($fetch) {
+               foreach my $p (keys %$fetch) {
+                       basename($fetch->{$p}) eq 'trunk' or next;
+                       $gs = Git::SVN->new($fetch->{$p}, $gs->{repo_id}, $p);
+                       last;
+               }
        }
-       return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
-       return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
-       return (undef, $1) if ($_revision =~ /^BASE:(\d+)$/);
-       return ($1, undef) if ($_revision =~ /^(\d+):HEAD$/);
-       die "revision argument: $_revision not understood by git-svn\n",
-           "Try using the command-line svn client instead\n";
+
+       my $valid_head = verify_ref('HEAD^0');
+       command_noisy(qw(update-ref refs/heads/master), $gs->refname);
+       return if ($valid_head || !verify_ref('HEAD^0'));
+
+       return if $ENV{GIT_DIR} !~ m#^(?:.*/)?\.git$#;
+       my $index = $ENV{GIT_INDEX_FILE} || "$ENV{GIT_DIR}/index";
+       return if -f $index;
+
+       return if command_oneline(qw/rev-parse --is-inside-work-tree/) eq 'false';
+       return if command_oneline(qw/rev-parse --is-inside-git-dir/) eq 'true';
+       command_noisy(qw/read-tree -m -u -v HEAD HEAD/);
+       print STDERR "Checked out HEAD:\n  ",
+                    $gs->full_url, " r", $gs->last_rev, "\n";
+       $gs->mkemptydirs($gs->last_rev);
 }
 
 sub complete_svn_url {
@@ -497,7 +1249,7 @@ sub complete_svn_url {
        if ($path !~ m#^[a-z\+]+://#) {
                if (!defined $url || $url !~ m#^[a-z\+]+://#) {
                        fatal("E: '$path' is not a complete URL ",
-                             "and a separate URL is not specified\n");
+                             "and a separate URL is not specified");
                }
                return ($url, $path);
        }
@@ -518,23 +1270,32 @@ sub complete_url_ls_init {
                $repo_path =~ s#^/+##;
                unless ($ra) {
                        fatal("E: '$repo_path' is not a complete URL ",
-                             "and a separate URL is not specified\n");
+                             "and a separate URL is not specified");
                }
        }
-       my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
-       my ($dirent, undef, undef) = $ra->get_dir($repo_path, $r);
        my $url = $ra->{url};
-       foreach my $d (sort keys %$dirent) {
-               next if ($dirent->{$d}->kind != $SVN::Node::dir);
-               my $path =  "$repo_path/$d";
-               my $ref = "$pfx$d";
-               my $gs = eval { Git::SVN->new($ref) };
-               # don't try to init already existing refs
-               unless ($gs) {
-                       print "init $url/$path => $ref\n";
-                       Git::SVN->init($url, $path, undef, $ref);
-               }
+       my $gs = Git::SVN->init($url, undef, undef, undef, 1);
+       my $k = "svn-remote.$gs->{repo_id}.url";
+       my $orig_url = eval { command_oneline(qw/config --get/, $k) };
+       if ($orig_url && ($orig_url ne $gs->{url})) {
+               die "$k already set: $orig_url\n",
+                   "wanted to set to: $gs->{url}\n";
+       }
+       command_oneline('config', $k, $gs->{url}) unless $orig_url;
+       my $remote_path = "$gs->{path}/$repo_path";
+       $remote_path =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg;
+       $remote_path =~ s#/+#/#g;
+       $remote_path =~ s#^/##g;
+       $remote_path .= "/*" if $remote_path !~ /\*/;
+       my ($n) = ($switch =~ /^--(\w+)/);
+       if (length $pfx && $pfx !~ m#/$#) {
+               die "--prefix='$pfx' must have a trailing slash '/'\n";
        }
+       command_noisy('config',
+                     '--add',
+                     "svn-remote.$gs->{repo_id}.$n",
+                     "$remote_path:refs/remotes/$pfx*" .
+                       ('/*' x (($remote_path =~ tr/*/*/) - 1)) );
 }
 
 sub verify_ref {
@@ -576,30 +1337,63 @@ sub get_commit_entry {
                my ($msg_fh, $ctx) = command_output_pipe('cat-file',
                                                         $type, $treeish);
                my $in_msg = 0;
+               my $author;
+               my $saw_from = 0;
+               my $msgbuf = "";
                while (<$msg_fh>) {
                        if (!$in_msg) {
                                $in_msg = 1 if (/^\s*$/);
+                               $author = $1 if (/^author (.*>)/);
                        } elsif (/^git-svn-id: /) {
                                # skip this for now, we regenerate the
                                # correct one on re-fetch anyways
                                # TODO: set *:merge properties or like...
                        } else {
-                               print $log_fh $_ or croak $!;
+                               if (/^From:/ || /^Signed-off-by:/) {
+                                       $saw_from = 1;
+                               }
+                               $msgbuf .= $_;
                        }
                }
+               $msgbuf =~ s/\s+$//s;
+               if ($Git::SVN::_add_author_from && defined($author)
+                   && !$saw_from) {
+                       $msgbuf .= "\n\nFrom: $author";
+               }
+               print $log_fh $msgbuf or croak $!;
                command_close_pipe($msg_fh, $ctx);
        }
        close $log_fh or croak $!;
 
        if ($_edit || ($type eq 'tree')) {
-               my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
-               # TODO: strip out spaces, comments, like git-commit.sh
-               system($editor, $commit_editmsg);
+               chomp(my $editor = command_oneline(qw(var GIT_EDITOR)));
+               system('sh', '-c', $editor.' "$@"', $editor, $commit_editmsg);
        }
        rename $commit_editmsg, $commit_msg or croak $!;
-       open $log_fh, '<', $commit_msg or croak $!;
-       { local $/; chomp($log_entry{log} = <$log_fh>); }
-       close $log_fh or croak $!;
+       {
+               require Encode;
+               # SVN requires messages to be UTF-8 when entering the repo
+               local $/;
+               open $log_fh, '<', $commit_msg or croak $!;
+               binmode $log_fh;
+               chomp($log_entry{log} = <$log_fh>);
+
+               my $enc = Git::config('i18n.commitencoding') || 'UTF-8';
+               my $msg = $log_entry{log};
+
+               eval { $msg = Encode::decode($enc, $msg, 1) };
+               if ($@) {
+                       die "Could not decode as $enc:\n", $msg,
+                           "\nPerhaps you need to set i18n.commitencoding\n";
+               }
+
+               eval { $msg = Encode::encode('UTF-8', $msg, 1) };
+               die "Could not encode as UTF-8:\n$msg\n" if $@;
+
+               $log_entry{log} = $msg;
+
+               close $log_fh or croak $!;
+       }
        unlink $commit_msg;
        \%log_entry;
 }
@@ -628,7 +1422,7 @@ sub load_authors {
        my $log = $cmd eq 'log';
        while (<$authors>) {
                chomp;
-               next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
+               next unless /^(.+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
                my ($user, $name, $email) = ($1, $2, $3);
                if ($log) {
                        $Git::SVN::Log::rusers{"$name <$email>"} = $user;
@@ -640,14 +1434,18 @@ sub load_authors {
 }
 
 # convert GetOpt::Long specs for use by git-config
-sub read_repo_config {
-       return unless -d $ENV{GIT_DIR};
+sub read_git_config {
        my $opts = shift;
+       my @config_only;
        foreach my $o (keys %$opts) {
+               # if we have mixedCase and a long option-only, then
+               # it's a config-only variable that we don't need for
+               # the command-line.
+               push @config_only, $o if ($o =~ /[A-Z]/ && $o =~ /^[a-z]+$/i);
                my $v = $opts->{$o};
-               my ($key) = ($o =~ /^([a-z\-]+)/);
+               my ($key) = ($o =~ /^([a-zA-Z\-]+)/);
                $key =~ s/-//g;
-               my $arg = 'git-config';
+               my $arg = 'git config';
                $arg .= ' --int' if ($o =~ /[:=]i$/);
                $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
                if (ref $v eq 'ARRAY') {
@@ -660,16 +1458,17 @@ sub read_repo_config {
                        }
                }
        }
+       delete @$opts{@config_only} if @config_only;
 }
 
 sub extract_metadata {
        my $id = shift or return (undef, undef, undef);
-       my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
-                                                       \s([a-f\d\-]+)$/x);
+       my ($url, $rev, $uuid) = ($id =~ /^\s*git-svn-id:\s+(.*)\@(\d+)
+                                                       \s([a-f\d\-]+)$/ix);
        if (!defined $rev || !$uuid || !$url) {
                # some of the original repositories I made had
                # identifiers like this:
-               ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
+               ($rev, $uuid) = ($id =~/^\s*git-svn-id:\s(\d+)\@([a-f\d\-]+)/i);
        }
        return ($url, $rev, $uuid);
 }
@@ -679,37 +1478,403 @@ sub cmt_metadata {
                command(qw/cat-file commit/, shift)))[-1]);
 }
 
-package Git::SVN;
-use strict;
-use warnings;
-use vars qw/$default_repo_id $default_ref_id/;
-use Carp qw/croak/;
-use File::Path qw/mkpath/;
-use IPC::Open3;
+sub cmt_sha2rev_batch {
+       my %s2r;
+       my ($pid, $in, $out, $ctx) = command_bidi_pipe(qw/cat-file --batch/);
+       my $list = shift;
+
+       foreach my $sha (@{$list}) {
+               my $first = 1;
+               my $size = 0;
+               print $out $sha, "\n";
+
+               while (my $line = <$in>) {
+                       if ($first && $line =~ /^[[:xdigit:]]{40}\smissing$/) {
+                               last;
+                       } elsif ($first &&
+                              $line =~ /^[[:xdigit:]]{40}\scommit\s(\d+)$/) {
+                               $first = 0;
+                               $size = $1;
+                               next;
+                       } elsif ($line =~ /^(git-svn-id: )/) {
+                               my (undef, $rev, undef) =
+                                                     extract_metadata($line);
+                               $s2r{$sha} = $rev;
+                       }
 
-# properties that we do not log:
-my %SKIP_PROP;
-BEGIN {
-       %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
-                                       svn:special svn:executable
-                                       svn:entry:committed-rev
-                                       svn:entry:last-author
-                                       svn:entry:uuid
-                                       svn:entry:committed-date/;
+                       $size -= length($line);
+                       last if ($size == 0);
+               }
+       }
+
+       command_close_bidi_pipe($pid, $in, $out, $ctx);
+
+       return \%s2r;
+}
+
+sub working_head_info {
+       my ($head, $refs) = @_;
+       my @args = qw/log --no-color --no-decorate --first-parent
+                     --pretty=medium/;
+       my ($fh, $ctx) = command_output_pipe(@args, $head);
+       my $hash;
+       my %max;
+       while (<$fh>) {
+               if ( m{^commit ($::sha1)$} ) {
+                       unshift @$refs, $hash if $hash and $refs;
+                       $hash = $1;
+                       next;
+               }
+               next unless s{^\s*(git-svn-id:)}{$1};
+               my ($url, $rev, $uuid) = extract_metadata($_);
+               if (defined $url && defined $rev) {
+                       next if $max{$url} and $max{$url} < $rev;
+                       if (my $gs = Git::SVN->find_by_url($url)) {
+                               my $c = $gs->rev_map_get($rev, $uuid);
+                               if ($c && $c eq $hash) {
+                                       close $fh; # break the pipe
+                                       return ($url, $rev, $uuid, $gs);
+                               } else {
+                                       $max{$url} ||= $gs->rev_map_max;
+                               }
+                       }
+               }
+       }
+       command_close_pipe($fh, $ctx);
+       (undef, undef, undef, undef);
+}
+
+sub read_commit_parents {
+       my ($parents, $c) = @_;
+       chomp(my $p = command_oneline(qw/rev-list --parents -1/, $c));
+       $p =~ s/^($c)\s*// or die "rev-list --parents -1 $c failed!\n";
+       @{$parents->{$c}} = split(/ /, $p);
+}
+
+sub linearize_history {
+       my ($gs, $refs) = @_;
+       my %parents;
+       foreach my $c (@$refs) {
+               read_commit_parents(\%parents, $c);
+       }
+
+       my @linear_refs;
+       my %skip = ();
+       my $last_svn_commit = $gs->last_commit;
+       foreach my $c (reverse @$refs) {
+               next if $c eq $last_svn_commit;
+               last if $skip{$c};
+
+               unshift @linear_refs, $c;
+               $skip{$c} = 1;
+
+               # we only want the first parent to diff against for linear
+               # history, we save the rest to inject when we finalize the
+               # svn commit
+               my $fp_a = verify_ref("$c~1");
+               my $fp_b = shift @{$parents{$c}} if $parents{$c};
+               if (!$fp_a || !$fp_b) {
+                       die "Commit $c\n",
+                           "has no parent commit, and therefore ",
+                           "nothing to diff against.\n",
+                           "You should be working from a repository ",
+                           "originally created by git-svn\n";
+               }
+               if ($fp_a ne $fp_b) {
+                       die "$c~1 = $fp_a, however parsing commit $c ",
+                           "revealed that:\n$c~1 = $fp_b\nBUG!\n";
+               }
+
+               foreach my $p (@{$parents{$c}}) {
+                       $skip{$p} = 1;
+               }
+       }
+       (\@linear_refs, \%parents);
+}
+
+sub find_file_type_and_diff_status {
+       my ($path) = @_;
+       return ('dir', '') if $path eq '';
+
+       my $diff_output =
+           command_oneline(qw(diff --cached --name-status --), $path) || "";
+       my $diff_status = (split(' ', $diff_output))[0] || "";
+
+       my $ls_tree = command_oneline(qw(ls-tree HEAD), $path) || "";
+
+       return (undef, undef) if !$diff_status && !$ls_tree;
+
+       if ($diff_status eq "A") {
+               return ("link", $diff_status) if -l $path;
+               return ("dir", $diff_status) if -d $path;
+               return ("file", $diff_status);
+       }
+
+       my $mode = (split(' ', $ls_tree))[0] || "";
+
+       return ("link", $diff_status) if $mode eq "120000";
+       return ("dir", $diff_status) if $mode eq "040000";
+       return ("file", $diff_status);
+}
+
+sub md5sum {
+       my $arg = shift;
+       my $ref = ref $arg;
+       my $md5 = Digest::MD5->new();
+        if ($ref eq 'GLOB' || $ref eq 'IO::File' || $ref eq 'File::Temp') {
+               $md5->addfile($arg) or croak $!;
+       } elsif ($ref eq 'SCALAR') {
+               $md5->add($$arg) or croak $!;
+       } elsif (!$ref) {
+               $md5->add($arg) or croak $!;
+       } else {
+               ::fatal "Can't provide MD5 hash for unknown ref type: '", $ref, "'";
+       }
+       return $md5->hexdigest();
+}
+
+sub gc_directory {
+       if ($can_compress && -f $_ && basename($_) eq "unhandled.log") {
+               my $out_filename = $_ . ".gz";
+               open my $in_fh, "<", $_ or die "Unable to open $_: $!\n";
+               binmode $in_fh;
+               my $gz = Compress::Zlib::gzopen($out_filename, "ab") or
+                               die "Unable to open $out_filename: $!\n";
+
+               my $res;
+               while ($res = sysread($in_fh, my $str, 1024)) {
+                       $gz->gzwrite($str) or
+                               die "Unable to write: ".$gz->gzerror()."!\n";
+               }
+               unlink $_ or die "unlink $File::Find::name: $!\n";
+       } elsif (-f $_ && basename($_) eq "index") {
+               unlink $_ or die "unlink $_: $!\n";
+       }
+}
+
+package Git::SVN;
+use strict;
+use warnings;
+use Fcntl qw/:DEFAULT :seek/;
+use constant rev_map_fmt => 'NH40';
+use vars qw/$default_repo_id $default_ref_id $_no_metadata $_follow_parent
+            $_repack $_repack_flags $_use_svm_props $_head
+            $_use_svnsync_props $no_reuse_existing $_minimize_url
+           $_use_log_author $_add_author_from $_localtime/;
+use Carp qw/croak/;
+use File::Path qw/mkpath/;
+use File::Copy qw/copy/;
+use IPC::Open3;
+use Memoize;  # core since 5.8.0, Jul 2002
+use Memoize::Storable;
+
+my ($_gc_nr, $_gc_period);
+
+# properties that we do not log:
+my %SKIP_PROP;
+BEGIN {
+       %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
+                                       svn:special svn:executable
+                                       svn:entry:committed-rev
+                                       svn:entry:last-author
+                                       svn:entry:uuid
+                                       svn:entry:committed-date/;
+
+       # some options are read globally, but can be overridden locally
+       # per [svn-remote "..."] section.  Command-line options will *NOT*
+       # override options set in an [svn-remote "..."] section
+       no strict 'refs';
+       for my $option (qw/follow_parent no_metadata use_svm_props
+                          use_svnsync_props/) {
+               my $key = $option;
+               $key =~ tr/_//d;
+               my $prop = "-$option";
+               *$option = sub {
+                       my ($self) = @_;
+                       return $self->{$prop} if exists $self->{$prop};
+                       my $k = "svn-remote.$self->{repo_id}.$key";
+                       eval { command_oneline(qw/config --get/, $k) };
+                       if ($@) {
+                               $self->{$prop} = ${"Git::SVN::_$option"};
+                       } else {
+                               my $v = command_oneline(qw/config --bool/,$k);
+                               $self->{$prop} = $v eq 'false' ? 0 : 1;
+                       }
+                       return $self->{$prop};
+               }
+       }
+}
+
+
+my (%LOCKFILES, %INDEX_FILES);
+END {
+       unlink keys %LOCKFILES if %LOCKFILES;
+       unlink keys %INDEX_FILES if %INDEX_FILES;
+}
+
+sub resolve_local_globs {
+       my ($url, $fetch, $glob_spec) = @_;
+       return unless defined $glob_spec;
+       my $ref = $glob_spec->{ref};
+       my $path = $glob_spec->{path};
+       foreach (command(qw#for-each-ref --format=%(refname) refs/#)) {
+               next unless m#^$ref->{regex}$#;
+               my $p = $1;
+               my $pathname = desanitize_refname($path->full_path($p));
+               my $refname = desanitize_refname($ref->full_path($p));
+               if (my $existing = $fetch->{$pathname}) {
+                       if ($existing ne $refname) {
+                               die "Refspec conflict:\n",
+                                   "existing: $existing\n",
+                                   " globbed: $refname\n";
+                       }
+                       my $u = (::cmt_metadata("$refname"))[0];
+                       $u =~ s!^\Q$url\E(/|$)!! or die
+                         "$refname: '$url' not found in '$u'\n";
+                       if ($pathname ne $u) {
+                               warn "W: Refspec glob conflict ",
+                                    "(ref: $refname):\n",
+                                    "expected path: $pathname\n",
+                                    "    real path: $u\n",
+                                    "Continuing ahead with $u\n";
+                               next;
+                       }
+               } else {
+                       $fetch->{$pathname} = $refname;
+               }
+       }
+}
+
+sub parse_revision_argument {
+       my ($base, $head) = @_;
+       if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
+               return ($base, $head);
+       }
+       return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
+       return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
+       return ($head, $head) if ($::_revision eq 'HEAD');
+       return ($base, $1) if ($::_revision =~ /^BASE:(\d+)$/);
+       return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
+       die "revision argument: $::_revision not understood by git-svn\n";
+}
+
+sub fetch_all {
+       my ($repo_id, $remotes) = @_;
+       if (ref $repo_id) {
+               my $gs = $repo_id;
+               $repo_id = undef;
+               $repo_id = $gs->{repo_id};
+       }
+       $remotes ||= read_all_remotes();
+       my $remote = $remotes->{$repo_id} or
+                    die "[svn-remote \"$repo_id\"] unknown\n";
+       my $fetch = $remote->{fetch};
+       my $url = $remote->{url} or die "svn-remote.$repo_id.url not defined\n";
+       my (@gs, @globs);
+       my $ra = Git::SVN::Ra->new($url);
+       my $uuid = $ra->get_uuid;
+       my $head = $ra->get_latest_revnum;
+
+       # ignore errors, $head revision may not even exist anymore
+       eval { $ra->get_log("", $head, 0, 1, 0, 1, sub { $head = $_[1] }) };
+       warn "W: $@\n" if $@;
+
+       my $base = defined $fetch ? $head : 0;
+
+       # read the max revs for wildcard expansion (branches/*, tags/*)
+       foreach my $t (qw/branches tags/) {
+               defined $remote->{$t} or next;
+               push @globs, @{$remote->{$t}};
+
+               my $max_rev = eval { tmp_config(qw/--int --get/,
+                                        "svn-remote.$repo_id.${t}-maxRev") };
+               if (defined $max_rev && ($max_rev < $base)) {
+                       $base = $max_rev;
+               } elsif (!defined $max_rev) {
+                       $base = 0;
+               }
+       }
+
+       if ($fetch) {
+               foreach my $p (sort keys %$fetch) {
+                       my $gs = Git::SVN->new($fetch->{$p}, $repo_id, $p);
+                       my $lr = $gs->rev_map_max;
+                       if (defined $lr) {
+                               $base = $lr if ($lr < $base);
+                       }
+                       push @gs, $gs;
+               }
+       }
+
+       ($base, $head) = parse_revision_argument($base, $head);
+       $ra->gs_fetch_loop_common($base, $head, \@gs, \@globs);
 }
 
 sub read_all_remotes {
        my $r = {};
+       my $use_svm_props = eval { command_oneline(qw/config --bool
+           svn.useSvmProps/) };
+       $use_svm_props = $use_svm_props eq 'true' if $use_svm_props;
+       my $svn_refspec = qr{\s*(.*?)\s*:\s*(.+?)\s*};
        foreach (grep { s/^svn-remote\.// } command(qw/config -l/)) {
-               if (m!^(.+)\.fetch=\s*(.*)\s*:\s*refs/remotes/(.+)\s*$!) {
-                       $r->{$1}->{fetch}->{$2} = $3;
+               if (m!^(.+)\.fetch=$svn_refspec$!) {
+                       my ($remote, $local_ref, $remote_ref) = ($1, $2, $3);
+                       die("svn-remote.$remote: remote ref '$remote_ref' "
+                           . "must start with 'refs/'\n")
+                               unless $remote_ref =~ m{^refs/};
+                       $local_ref = uri_decode($local_ref);
+                       $r->{$remote}->{fetch}->{$local_ref} = $remote_ref;
+                       $r->{$remote}->{svm} = {} if $use_svm_props;
+               } elsif (m!^(.+)\.usesvmprops=\s*(.*)\s*$!) {
+                       $r->{$1}->{svm} = {};
                } elsif (m!^(.+)\.url=\s*(.*)\s*$!) {
                        $r->{$1}->{url} = $2;
+               } elsif (m!^(.+)\.(branches|tags)=$svn_refspec$!) {
+                       my ($remote, $t, $local_ref, $remote_ref) =
+                                                            ($1, $2, $3, $4);
+                       die("svn-remote.$remote: remote ref '$remote_ref' ($t) "
+                           . "must start with 'refs/'\n")
+                               unless $remote_ref =~ m{^refs/};
+                       $local_ref = uri_decode($local_ref);
+                       my $rs = {
+                           t => $t,
+                           remote => $remote,
+                           path => Git::SVN::GlobSpec->new($local_ref, 1),
+                           ref => Git::SVN::GlobSpec->new($remote_ref, 0) };
+                       if (length($rs->{ref}->{right}) != 0) {
+                               die "The '*' glob character must be the last ",
+                                   "character of '$remote_ref'\n";
+                       }
+                       push @{ $r->{$remote}->{$t} }, $rs;
                }
        }
+
+       map {
+               if (defined $r->{$_}->{svm}) {
+                       my $svm;
+                       eval {
+                               my $section = "svn-remote.$_";
+                               $svm = {
+                                       source => tmp_config('--get',
+                                           "$section.svm-source"),
+                                       replace => tmp_config('--get',
+                                           "$section.svm-replace"),
+                               }
+                       };
+                       $r->{$_}->{svm} = $svm;
+               }
+       } keys %$r;
+
        $r;
 }
 
+sub init_vars {
+       $_gc_nr = $_gc_period = 1000;
+       if (defined $_repack || defined $_repack_flags) {
+              warn "Repack options are obsolete; they have no effect.\n";
+       }
+}
+
 sub verify_remotes_sanity {
        return unless -d $ENV{GIT_DIR};
        my %seen;
@@ -727,15 +1892,9 @@ sub verify_remotes_sanity {
        }
 }
 
-# we allow more chars than remotes2config.sh...
-sub sanitize_remote_name {
-       my ($name) = @_;
-       $name =~ tr{A-Za-z0-9:,/+-}{.}c;
-       $name;
-}
-
 sub find_existing_remote {
        my ($url, $remotes) = @_;
+       return undef if $no_reuse_existing;
        my $existing;
        foreach my $repo_id (keys %$remotes) {
                my $u = $remotes->{$repo_id}->{url} or next;
@@ -747,28 +1906,34 @@ sub find_existing_remote {
 }
 
 sub init_remote_config {
-       my ($self, $url) = @_;
+       my ($self, $url, $no_write) = @_;
        $url =~ s!/+$!!; # strip trailing slash
        my $r = read_all_remotes();
        my $existing = find_existing_remote($url, $r);
        if ($existing) {
-               print STDERR "Using existing ",
-                            "[svn-remote \"$existing\"]\n";
+               unless ($no_write) {
+                       print STDERR "Using existing ",
+                                    "[svn-remote \"$existing\"]\n";
+               }
                $self->{repo_id} = $existing;
-       } else {
+       } elsif ($_minimize_url) {
                my $min_url = Git::SVN::Ra->new($url)->minimize_url;
                $existing = find_existing_remote($min_url, $r);
                if ($existing) {
-                       print STDERR "Using existing ",
-                                    "[svn-remote \"$existing\"]\n";
+                       unless ($no_write) {
+                               print STDERR "Using existing ",
+                                            "[svn-remote \"$existing\"]\n";
+                       }
                        $self->{repo_id} = $existing;
                }
                if ($min_url ne $url) {
-                       print STDERR "Using higher level of URL: ",
-                                    "$url => $min_url\n";
+                       unless ($no_write) {
+                               print STDERR "Using higher level of URL: ",
+                                            "$url => $min_url\n";
+                       }
                        my $old_path = $self->{path};
                        $self->{path} = $url;
-                       $self->{path} =~ s!^\Q$min_url\E/*!!;
+                       $self->{path} =~ s!^\Q$min_url\E(/|$)!!;
                        if (length $old_path) {
                                $self->{path} .= "/$old_path";
                        }
@@ -788,23 +1953,76 @@ sub init_remote_config {
                }
        }
        my ($xrepo_id, $xpath) = find_ref($self->refname);
-       if (defined $xpath) {
+       if (!$no_write && defined $xpath) {
                die "svn-remote.$xrepo_id.fetch already set to track ",
-                   "$xpath:refs/remotes/", $self->refname, "\n";
+                   "$xpath:", $self->refname, "\n";
+       }
+       unless ($no_write) {
+               command_noisy('config',
+                             "svn-remote.$self->{repo_id}.url", $url);
+               $self->{path} =~ s{^/}{};
+               $self->{path} =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg;
+               command_noisy('config', '--add',
+                             "svn-remote.$self->{repo_id}.fetch",
+                             "$self->{path}:".$self->refname);
        }
-       command_noisy('config',
-                     "svn-remote.$self->{repo_id}.url", $url);
-       command_noisy('config', '--add',
-                     "svn-remote.$self->{repo_id}.fetch",
-                     "$self->{path}:".$self->refname);
        $self->{url} = $url;
 }
 
+sub find_by_url { # repos_root and, path are optional
+       my ($class, $full_url, $repos_root, $path) = @_;
+
+       return undef unless defined $full_url;
+       remove_username($full_url);
+       remove_username($repos_root) if defined $repos_root;
+       my $remotes = read_all_remotes();
+       if (defined $full_url && defined $repos_root && !defined $path) {
+               $path = $full_url;
+               $path =~ s#^\Q$repos_root\E(?:/|$)##;
+       }
+       foreach my $repo_id (keys %$remotes) {
+               my $u = $remotes->{$repo_id}->{url} or next;
+               remove_username($u);
+               next if defined $repos_root && $repos_root ne $u;
+
+               my $fetch = $remotes->{$repo_id}->{fetch} || {};
+               foreach my $t (qw/branches tags/) {
+                       foreach my $globspec (@{$remotes->{$repo_id}->{$t}}) {
+                               resolve_local_globs($u, $fetch, $globspec);
+                       }
+               }
+               my $p = $path;
+               my $rwr = rewrite_root({repo_id => $repo_id});
+               my $svm = $remotes->{$repo_id}->{svm}
+                       if defined $remotes->{$repo_id}->{svm};
+               unless (defined $p) {
+                       $p = $full_url;
+                       my $z = $u;
+                       my $prefix = '';
+                       if ($rwr) {
+                               $z = $rwr;
+                               remove_username($z);
+                       } elsif (defined $svm) {
+                               $z = $svm->{source};
+                               $prefix = $svm->{replace};
+                               $prefix =~ s#^\Q$u\E(?:/|$)##;
+                               $prefix =~ s#/$##;
+                       }
+                       $p =~ s#^\Q$z\E(?:/|$)#$prefix# or next;
+               }
+               foreach my $f (keys %$fetch) {
+                       next if $f ne $p;
+                       return Git::SVN->new($fetch->{$f}, $repo_id, $f);
+               }
+       }
+       undef;
+}
+
 sub init {
-       my ($class, $url, $path, $repo_id, $ref_id) = @_;
+       my ($class, $url, $path, $repo_id, $ref_id, $no_write) = @_;
        my $self = _new($class, $repo_id, $ref_id, $path);
        if (defined $url) {
-               $self->init_remote_config($url);
+               $self->init_remote_config($url, $no_write);
        }
        $self;
 }
@@ -813,7 +2031,7 @@ sub find_ref {
        my ($ref_id) = @_;
        foreach (command(qw/config -l/)) {
                next unless m!^svn-remote\.(.+)\.fetch=
-                             \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
+                             \s*(.*?)\s*:\s*(.+?)\s*$!x;
                my ($repo_id, $path, $ref) = ($1, $2, $3);
                if ($ref eq $ref_id) {
                        $path = '' if ($path =~ m#^\./?#);
@@ -830,73 +2048,323 @@ sub new {
                if (!defined $repo_id) {
                        die "Could not find a \"svn-remote.*.fetch\" key ",
                            "in the repository configuration matching: ",
-                           "refs/remotes/$ref_id\n";
+                           "$ref_id\n";
                }
        }
        my $self = _new($class, $repo_id, $ref_id, $path);
        if (!defined $self->{path} || !length $self->{path}) {
                my $fetch = command_oneline('config', '--get',
                                            "svn-remote.$repo_id.fetch",
-                                           ":refs/remotes/$ref_id\$") or
+                                           ":$ref_id\$") or
                     die "Failed to read \"svn-remote.$repo_id.fetch\" ",
-                        "\":refs/remotes/$ref_id\$\" in config\n";
+                        "\":$ref_id\$\" in config\n";
                ($self->{path}, undef) = split(/\s*:\s*/, $fetch);
        }
+       $self->{path} =~ s{/+}{/}g;
+       $self->{path} =~ s{\A/}{};
+       $self->{path} =~ s{/\z}{};
        $self->{url} = command_oneline('config', '--get',
                                       "svn-remote.$repo_id.url") or
                   die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
+       $self->rebuild;
        $self;
 }
 
-sub refname { "refs/remotes/$_[0]->{ref_id}" }
+sub refname {
+       my ($refname) = $_[0]->{ref_id} ;
 
-sub ra {
-       my ($self) = shift;
-       $self->{ra} ||= Git::SVN::Ra->new($self->{url});
+       # It cannot end with a slash /, we'll throw up on this because
+       # SVN can't have directories with a slash in their name, either:
+       if ($refname =~ m{/$}) {
+               die "ref: '$refname' ends with a trailing slash, this is ",
+                   "not permitted by git nor Subversion\n";
+       }
+
+       # It cannot have ASCII control character space, tilde ~, caret ^,
+       # colon :, question-mark ?, asterisk *, space, or open bracket [
+       # anywhere.
+       #
+       # Additionally, % must be escaped because it is used for escaping
+       # and we want our escaped refname to be reversible
+       $refname =~ s{([ \%~\^:\?\*\[\t])}{uc sprintf('%%%02x',ord($1))}eg;
+
+       # no slash-separated component can begin with a dot .
+       # /.* becomes /%2E*
+       $refname =~ s{/\.}{/%2E}g;
+
+       # It cannot have two consecutive dots .. anywhere
+       # .. becomes %2E%2E
+       $refname =~ s{\.\.}{%2E%2E}g;
+
+       # trailing dots and .lock are not allowed
+       # .$ becomes %2E and .lock becomes %2Elock
+       $refname =~ s{\.(?=$|lock$)}{%2E};
+
+       # the sequence @{ is used to access the reflog
+       # @{ becomes %40{
+       $refname =~ s{\@\{}{%40\{}g;
+
+       return $refname;
+}
+
+sub desanitize_refname {
+       my ($refname) = @_;
+       $refname =~ s{%(?:([0-9A-F]{2}))}{chr hex($1)}eg;
+       return $refname;
 }
 
-sub rel_path {
+sub svm_uuid {
        my ($self) = @_;
-       my $repos_root = $self->ra->{repos_root};
-       return $self->{path} if ($self->{url} eq $repos_root);
-       my $url = $self->{url} .
-                 (length $self->{path} ? "/$self->{path}" : $self->{path});
-       $url =~ s!^\Q$repos_root\E/*!!g;
-       $url;
+       return $self->{svm}->{uuid} if $self->svm;
+       $self->ra;
+       unless ($self->{svm}) {
+               die "SVM UUID not cached, and reading remotely failed\n";
+       }
+       $self->{svm}->{uuid};
 }
 
-sub copy_remote_ref {
+sub svm {
        my ($self) = @_;
-       my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
-       my $ref = $self->refname;
-       if (command('ls-remote', $origin, $ref)) {
-               command_noisy('fetch', $origin, "$ref:$ref");
-       } elsif ($::_cp_remote && !$::_upgrade) {
-               die "Unable to find remote reference: $ref on $origin\n";
+       return $self->{svm} if $self->{svm};
+       my $svm;
+       # see if we have it in our config, first:
+       eval {
+               my $section = "svn-remote.$self->{repo_id}";
+               $svm = {
+                 source => tmp_config('--get', "$section.svm-source"),
+                 uuid => tmp_config('--get', "$section.svm-uuid"),
+                 replace => tmp_config('--get', "$section.svm-replace"),
+               }
+       };
+       if ($svm && $svm->{source} && $svm->{uuid} && $svm->{replace}) {
+               $self->{svm} = $svm;
+       }
+       $self->{svm};
+}
+
+sub _set_svm_vars {
+       my ($self, $ra) = @_;
+       return $ra if $self->svm;
+
+       my @err = ( "useSvmProps set, but failed to read SVM properties\n",
+                   "(svm:source, svm:uuid) ",
+                   "from the following URLs:\n" );
+       sub read_svm_props {
+               my ($self, $ra, $path, $r) = @_;
+               my $props = ($ra->get_dir($path, $r))[2];
+               my $src = $props->{'svm:source'};
+               my $uuid = $props->{'svm:uuid'};
+               return undef if (!$src || !$uuid);
+
+               chomp($src, $uuid);
+
+               $uuid =~ m{^[0-9a-f\-]{30,}$}i
+                   or die "doesn't look right - svm:uuid is '$uuid'\n";
+
+               # the '!' is used to mark the repos_root!/relative/path
+               $src =~ s{/?!/?}{/};
+               $src =~ s{/+$}{}; # no trailing slashes please
+               # username is of no interest
+               $src =~ s{(^[a-z\+]*://)[^/@]*@}{$1};
+
+               my $replace = $ra->{url};
+               $replace .= "/$path" if length $path;
+
+               my $section = "svn-remote.$self->{repo_id}";
+               tmp_config("$section.svm-source", $src);
+               tmp_config("$section.svm-replace", $replace);
+               tmp_config("$section.svm-uuid", $uuid);
+               $self->{svm} = {
+                       source => $src,
+                       uuid => $uuid,
+                       replace => $replace
+               };
        }
+
+       my $r = $ra->get_latest_revnum;
+       my $path = $self->{path};
+       my %tried;
+       while (length $path) {
+               unless ($tried{"$self->{url}/$path"}) {
+                       return $ra if $self->read_svm_props($ra, $path, $r);
+                       $tried{"$self->{url}/$path"} = 1;
+               }
+               $path =~ s#/?[^/]+$##;
+       }
+       die "Path: '$path' should be ''\n" if $path ne '';
+       return $ra if $self->read_svm_props($ra, $path, $r);
+       $tried{"$self->{url}/$path"} = 1;
+
+       if ($ra->{repos_root} eq $self->{url}) {
+               die @err, (map { "  $_\n" } keys %tried), "\n";
+       }
+
+       # nope, make sure we're connected to the repository root:
+       my $ok;
+       my @tried_b;
+       $path = $ra->{svn_path};
+       $ra = Git::SVN::Ra->new($ra->{repos_root});
+       while (length $path) {
+               unless ($tried{"$ra->{url}/$path"}) {
+                       $ok = $self->read_svm_props($ra, $path, $r);
+                       last if $ok;
+                       $tried{"$ra->{url}/$path"} = 1;
+               }
+               $path =~ s#/?[^/]+$##;
+       }
+       die "Path: '$path' should be ''\n" if $path ne '';
+       $ok ||= $self->read_svm_props($ra, $path, $r);
+       $tried{"$ra->{url}/$path"} = 1;
+       if (!$ok) {
+               die @err, (map { "  $_\n" } keys %tried), "\n";
+       }
+       Git::SVN::Ra->new($self->{url});
 }
 
-sub traverse_ignore {
-       my ($self, $fh, $path, $r) = @_;
-       $path =~ s#^/+##g;
-       my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
-       my $p = $path;
-       $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
-       print $fh length $p ? "\n# $p\n" : "\n# /\n";
-       if (my $s = $props->{'svn:ignore'}) {
-               $s =~ s/[\r\n]+/\n/g;
-               chomp $s;
-               if (length $p == 0) {
-                       $s =~ s#\n#\n/$p#g;
-                       print $fh "/$s\n";
+sub svnsync {
+       my ($self) = @_;
+       return $self->{svnsync} if $self->{svnsync};
+
+       if ($self->no_metadata) {
+               die "Can't have both 'noMetadata' and ",
+                   "'useSvnsyncProps' options set!\n";
+       }
+       if ($self->rewrite_root) {
+               die "Can't have both 'useSvnsyncProps' and 'rewriteRoot' ",
+                   "options set!\n";
+       }
+       if ($self->rewrite_uuid) {
+               die "Can't have both 'useSvnsyncProps' and 'rewriteUUID' ",
+                   "options set!\n";
+       }
+
+       my $svnsync;
+       # see if we have it in our config, first:
+       eval {
+               my $section = "svn-remote.$self->{repo_id}";
+
+               my $url = tmp_config('--get', "$section.svnsync-url");
+               ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
+                  die "doesn't look right - svn:sync-from-url is '$url'\n";
+
+               my $uuid = tmp_config('--get', "$section.svnsync-uuid");
+               ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}i) or
+                  die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
+
+               $svnsync = { url => $url, uuid => $uuid }
+       };
+       if ($svnsync && $svnsync->{url} && $svnsync->{uuid}) {
+               return $self->{svnsync} = $svnsync;
+       }
+
+       my $err = "useSvnsyncProps set, but failed to read " .
+                 "svnsync property: svn:sync-from-";
+       my $rp = $self->ra->rev_proplist(0);
+
+       my $url = $rp->{'svn:sync-from-url'} or die $err . "url\n";
+       ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
+                  die "doesn't look right - svn:sync-from-url is '$url'\n";
+
+       my $uuid = $rp->{'svn:sync-from-uuid'} or die $err . "uuid\n";
+       ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}i) or
+                  die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
+
+       my $section = "svn-remote.$self->{repo_id}";
+       tmp_config('--add', "$section.svnsync-uuid", $uuid);
+       tmp_config('--add', "$section.svnsync-url", $url);
+       return $self->{svnsync} = { url => $url, uuid => $uuid };
+}
+
+# this allows us to memoize our SVN::Ra UUID locally and avoid a
+# remote lookup (useful for 'git svn log').
+sub ra_uuid {
+       my ($self) = @_;
+       unless ($self->{ra_uuid}) {
+               my $key = "svn-remote.$self->{repo_id}.uuid";
+               my $uuid = eval { tmp_config('--get', $key) };
+               if (!$@ && $uuid && $uuid =~ /^([a-f\d\-]{30,})$/i) {
+                       $self->{ra_uuid} = $uuid;
                } else {
-                       $s =~ s#\n#\n/$p/#g;
-                       print $fh "/$p/$s\n";
+                       die "ra_uuid called without URL\n" unless $self->{url};
+                       $self->{ra_uuid} = $self->ra->get_uuid;
+                       tmp_config('--add', $key, $self->{ra_uuid});
                }
        }
+       $self->{ra_uuid};
+}
+
+sub _set_repos_root {
+       my ($self, $repos_root) = @_;
+       my $k = "svn-remote.$self->{repo_id}.reposRoot";
+       $repos_root ||= $self->ra->{repos_root};
+       tmp_config($k, $repos_root);
+       $repos_root;
+}
+
+sub repos_root {
+       my ($self) = @_;
+       my $k = "svn-remote.$self->{repo_id}.reposRoot";
+       eval { tmp_config('--get', $k) } || $self->_set_repos_root;
+}
+
+sub ra {
+       my ($self) = shift;
+       my $ra = Git::SVN::Ra->new($self->{url});
+       $self->_set_repos_root($ra->{repos_root});
+       if ($self->use_svm_props && !$self->{svm}) {
+               if ($self->no_metadata) {
+                       die "Can't have both 'noMetadata' and ",
+                           "'useSvmProps' options set!\n";
+               } elsif ($self->use_svnsync_props) {
+                       die "Can't have both 'useSvnsyncProps' and ",
+                           "'useSvmProps' options set!\n";
+               }
+               $ra = $self->_set_svm_vars($ra);
+               $self->{-want_revprops} = 1;
+       }
+       $ra;
+}
+
+# prop_walk(PATH, REV, SUB)
+# -------------------------
+# Recursively traverse PATH at revision REV and invoke SUB for each
+# directory that contains a SVN property.  SUB will be invoked as
+# follows:  &SUB(gs, path, props);  where `gs' is this instance of
+# Git::SVN, `path' the path to the directory where the properties
+# `props' were found.  The `path' will be relative to point of checkout,
+# that is, if url://repo/trunk is the current Git branch, and that
+# directory contains a sub-directory `d', SUB will be invoked with `/d/'
+# as `path' (note the trailing `/').
+sub prop_walk {
+       my ($self, $path, $rev, $sub) = @_;
+
+       $path =~ s#^/##;
+       my ($dirent, undef, $props) = $self->ra->get_dir($path, $rev);
+       $path =~ s#^/*#/#g;
+       my $p = $path;
+       # Strip the irrelevant part of the path.
+       $p =~ s#^/+\Q$self->{path}\E(/|$)#/#;
+       # Ensure the path is terminated by a `/'.
+       $p =~ s#/*$#/#;
+
+       # The properties contain all the internal SVN stuff nobody
+       # (usually) cares about.
+       my $interesting_props = 0;
+       foreach (keys %{$props}) {
+               # If it doesn't start with `svn:', it must be a
+               # user-defined property.
+               ++$interesting_props and next if $_ !~ /^svn:/;
+               # FIXME: Fragile, if SVN adds new public properties,
+               # this needs to be updated.
+               ++$interesting_props if /^svn:(?:ignore|keywords|executable
+                                                |eol-style|mime-type
+                                                |externals|needs-lock)$/x;
+       }
+       &$sub($self, $p, $props) if $interesting_props;
+
        foreach (sort keys %$dirent) {
-               next if $dirent->{$_}->kind != $SVN::Node::dir;
-               $self->traverse_ignore($fh, "$path/$_", $r);
+               next if $dirent->{$_}->{kind} != $SVN::Node::dir;
+               $self->prop_walk($self->{path} . $p . $_, $rev, $sub);
        }
 }
 
@@ -910,53 +2378,82 @@ sub last_rev_commit {
                return ($self->{last_rev}, $self->{last_commit});
        }
        my $c = ::verify_ref($self->refname.'^0');
-       if ($c) {
+       if ($c && !$self->use_svm_props && !$self->no_metadata) {
                my $rev = (::cmt_metadata($c))[1];
                if (defined $rev) {
                        ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
                        return ($rev, $c);
                }
        }
-       my $offset = -41; # from tail
-       my $rl;
-       open my $fh, '<', $self->{db_path} or
-                                croak "$self->{db_path} not readable: $!\n";
-       seek $fh, $offset, 2;
-       $rl = readline $fh;
-       defined $rl or return (undef, undef);
-       chomp $rl;
-       while ($c ne $rl && tell $fh != 0) {
-               $offset -= 41;
-               seek $fh, $offset, 2;
-               $rl = readline $fh;
-               defined $rl or return (undef, undef);
-               chomp $rl;
-       }
-       my $rev = tell $fh;
-       croak $! if ($rev < 0);
-       $rev =  ($rev - 41) / 41;
-       close $fh or croak $!;
-       ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
-       return ($rev, $c);
+       my $map_path = $self->map_path;
+       unless (-e $map_path) {
+               ($self->{last_rev}, $self->{last_commit}) = (undef, undef);
+               return (undef, undef);
+       }
+       my ($rev, $commit) = $self->rev_map_max(1);
+       ($self->{last_rev}, $self->{last_commit}) = ($rev, $commit);
+       return ($rev, $commit);
 }
 
 sub get_fetch_range {
        my ($self, $min, $max) = @_;
        $max ||= $self->ra->get_latest_revnum;
-       $min ||= $self->last_rev || 0;
+       $min ||= $self->rev_map_max;
        (++$min, $max);
 }
 
+sub tmp_config {
+       my (@args) = @_;
+       my $old_def_config = "$ENV{GIT_DIR}/svn/config";
+       my $config = "$ENV{GIT_DIR}/svn/.metadata";
+       if (! -f $config && -f $old_def_config) {
+               rename $old_def_config, $config or
+                      die "Failed rename $old_def_config => $config: $!\n";
+       }
+       my $old_config = $ENV{GIT_CONFIG};
+       $ENV{GIT_CONFIG} = $config;
+       $@ = undef;
+       my @ret = eval {
+               unless (-f $config) {
+                       mkfile($config);
+                       open my $fh, '>', $config or
+                           die "Can't open $config: $!\n";
+                       print $fh "; This file is used internally by ",
+                                 "git-svn\n" or die
+                                 "Couldn't write to $config: $!\n";
+                       print $fh "; You should not have to edit it\n" or
+                             die "Couldn't write to $config: $!\n";
+                       close $fh or die "Couldn't close $config: $!\n";
+               }
+               command('config', @args);
+       };
+       my $err = $@;
+       if (defined $old_config) {
+               $ENV{GIT_CONFIG} = $old_config;
+       } else {
+               delete $ENV{GIT_CONFIG};
+       }
+       die $err if $err;
+       wantarray ? @ret : $ret[0];
+}
+
 sub tmp_index_do {
        my ($self, $sub) = @_;
        my $old_index = $ENV{GIT_INDEX_FILE};
        $ENV{GIT_INDEX_FILE} = $self->{index};
-       my @ret = &$sub;
-       if ($old_index) {
+       $@ = undef;
+       my @ret = eval {
+               my ($dir, $base) = ($self->{index} =~ m#^(.*?)/?([^/]+)$#);
+               mkpath([$dir]) unless -d $dir;
+               &$sub;
+       };
+       my $err = $@;
+       if (defined $old_index) {
                $ENV{GIT_INDEX_FILE} = $old_index;
        } else {
                delete $ENV{GIT_INDEX_FILE};
        }
+       die $err if $err;
        wantarray ? @ret : $ret[0];
 }
 
@@ -968,67 +2465,138 @@ sub assert_index_clean {
                my $x = command_oneline('write-tree');
                my ($y) = (command(qw/cat-file commit/, $treeish) =~
                           /^tree ($::sha1)/mo);
-               if ($y ne $x) {
-                       unlink $self->{index} or croak $!;
-                       command_noisy('read-tree', $treeish);
-               }
+               return if $y eq $x;
+
+               warn "Index mismatch: $y != $x\nrereading $treeish\n";
+               unlink $self->{index} or die "unlink $self->{index}: $!\n";
+               command_noisy('read-tree', $treeish);
                $x = command_oneline('write-tree');
                if ($y ne $x) {
                        ::fatal "trees ($treeish) $y != $x\n",
-                               "Something is seriously wrong...\n";
+                               "Something is seriously wrong...";
                }
        });
 }
 
 sub get_commit_parents {
-       my ($self, $log_entry, @parents) = @_;
+       my ($self, $log_entry) = @_;
        my (%seen, @ret, @tmp);
-       # commit parents can be conditionally bound to a particular
-       # svn revision via: "svn_revno=commit_sha1", filter them out here:
-       foreach my $p (@parents) {
-               next unless defined $p;
-               if ($p =~ /^(\d+)=($::sha1_short)$/o) {
-                       push @tmp, $2 if $1 == $log_entry->{revision};
-               } else {
-                       push @tmp, $p if $p =~ /^$::sha1_short$/o;
+       # legacy support for 'set-tree'; this is only used by set_tree_cb:
+       if (my $ip = $self->{inject_parents}) {
+               if (my $commit = delete $ip->{$log_entry->{revision}}) {
+                       push @tmp, $commit;
                }
        }
        if (my $cur = ::verify_ref($self->refname.'^0')) {
                push @tmp, $cur;
        }
+       if (my $ipd = $self->{inject_parents_dcommit}) {
+               if (my $commit = delete $ipd->{$log_entry->{revision}}) {
+                       push @tmp, @$commit;
+               }
+       }
        push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
        while (my $p = shift @tmp) {
                next if $seen{$p};
                $seen{$p} = 1;
                push @ret, $p;
-               # MAXPARENT is defined to 16 in commit-tree.c:
-               last if @ret >= 16;
-       }
-       if (@tmp) {
-               die "r$log_entry->{revision}: No room for parents:\n\t",
-                   join("\n\t", @tmp), "\n";
        }
        @ret;
 }
 
+sub rewrite_root {
+       my ($self) = @_;
+       return $self->{-rewrite_root} if exists $self->{-rewrite_root};
+       my $k = "svn-remote.$self->{repo_id}.rewriteRoot";
+       my $rwr = eval { command_oneline(qw/config --get/, $k) };
+       if ($rwr) {
+               $rwr =~ s#/+$##;
+               if ($rwr !~ m#^[a-z\+]+://#) {
+                       die "$rwr is not a valid URL (key: $k)\n";
+               }
+       }
+       $self->{-rewrite_root} = $rwr;
+}
+
+sub rewrite_uuid {
+       my ($self) = @_;
+       return $self->{-rewrite_uuid} if exists $self->{-rewrite_uuid};
+       my $k = "svn-remote.$self->{repo_id}.rewriteUUID";
+       my $rwid = eval { command_oneline(qw/config --get/, $k) };
+       if ($rwid) {
+               $rwid =~ s#/+$##;
+               if ($rwid !~ m#^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}$#) {
+                       die "$rwid is not a valid UUID (key: $k)\n";
+               }
+       }
+       $self->{-rewrite_uuid} = $rwid;
+}
+
+sub metadata_url {
+       my ($self) = @_;
+       ($self->rewrite_root || $self->{url}) .
+          (length $self->{path} ? '/' . $self->{path} : '');
+}
+
 sub full_url {
        my ($self) = @_;
-       $self->ra->{url} . (length $self->{path} ? '/' . $self->{path} : '');
+       $self->{url} . (length $self->{path} ? '/' . $self->{path} : '');
 }
 
+
+sub set_commit_header_env {
+       my ($log_entry) = @_;
+       my %env;
+       foreach my $ned (qw/NAME EMAIL DATE/) {
+               foreach my $ac (qw/AUTHOR COMMITTER/) {
+                       $env{"GIT_${ac}_${ned}"} = $ENV{"GIT_${ac}_${ned}"};
+               }
+       }
+
+       $ENV{GIT_AUTHOR_NAME} = $log_entry->{name};
+       $ENV{GIT_AUTHOR_EMAIL} = $log_entry->{email};
+       $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
+
+       $ENV{GIT_COMMITTER_NAME} = (defined $log_entry->{commit_name})
+                                               ? $log_entry->{commit_name}
+                                               : $log_entry->{name};
+       $ENV{GIT_COMMITTER_EMAIL} = (defined $log_entry->{commit_email})
+                                               ? $log_entry->{commit_email}
+                                               : $log_entry->{email};
+       \%env;
+}
+
+sub restore_commit_header_env {
+       my ($env) = @_;
+       foreach my $ned (qw/NAME EMAIL DATE/) {
+               foreach my $ac (qw/AUTHOR COMMITTER/) {
+                       my $k = "GIT_${ac}_${ned}";
+                       if (defined $env->{$k}) {
+                               $ENV{$k} = $env->{$k};
+                       } else {
+                               delete $ENV{$k};
+                       }
+               }
+       }
+}
+
+sub gc {
+       command_noisy('gc', '--auto');
+};
+
 sub do_git_commit {
-       my ($self, $log_entry, @parents) = @_;
-       if (my $c = $self->rev_db_get($log_entry->{revision})) {
+       my ($self, $log_entry) = @_;
+       my $lr = $self->last_rev;
+       if (defined $lr && $lr >= $log_entry->{revision}) {
+               die "Last fetched revision of ", $self->refname,
+                   " was r$lr, but we are about to fetch: ",
+                   "r$log_entry->{revision}!\n";
+       }
+       if (my $c = $self->rev_map_get($log_entry->{revision})) {
                croak "$log_entry->{revision} = $c already exists! ",
                      "Why are we refetching it?\n";
        }
-       my $author = $log_entry->{author};
-       my ($name, $email) = (defined $::users{$author} ? @{$::users{$author}}
-                          : ($author, "$author\@".$self->ra->uuid));
-       $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
-       $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
-       $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
-
+       my $old_env = set_commit_header_env($log_entry);
        my $tree = $log_entry->{tree};
        if (!defined $tree) {
                $tree = $self->tmp_index_do(sub {
@@ -1036,16 +2604,26 @@ sub do_git_commit {
        }
        die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
 
-       my @exec = ('git-commit-tree', $tree);
-       foreach ($self->get_commit_parents($log_entry, @parents)) {
+       my @exec = ('git', 'commit-tree', $tree);
+       foreach ($self->get_commit_parents($log_entry)) {
                push @exec, '-p', $_;
        }
        defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
                                                                   or croak $!;
+       binmode $msg_fh;
+
+       # we always get UTF-8 from SVN, but we may want our commits in
+       # a different encoding.
+       if (my $enc = Git::config('i18n.commitencoding')) {
+               require Encode;
+               Encode::from_to($log_entry->{log}, 'UTF-8', $enc);
+       }
        print $msg_fh $log_entry->{log} or croak $!;
-       print $msg_fh "\ngit-svn-id: ", $self->full_url, '@',
-                     $log_entry->{revision}, ' ',
-                     $self->ra->uuid, "\n" or croak $!;
+       restore_commit_header_env($old_env);
+       unless ($self->no_metadata) {
+               print $msg_fh "\ngit-svn-id: $log_entry->{metadata}\n"
+                             or croak $!;
+       }
        $msg_fh->flush == 0 or croak $!;
        close $msg_fh or croak $!;
        chomp(my $commit = do { local $/; <$out_fh> });
@@ -1056,45 +2634,70 @@ sub do_git_commit {
                die "Failed to commit, invalid sha1: $commit\n";
        }
 
-       command_noisy('update-ref',$self->refname, $commit);
-       $self->rev_db_set($log_entry->{revision}, $commit);
+       $self->rev_map_set($log_entry->{revision}, $commit, 1);
 
        $self->{last_rev} = $log_entry->{revision};
        $self->{last_commit} = $commit;
-       print "r$log_entry->{revision} = $commit\n";
+       print "r$log_entry->{revision}" unless $::_q > 1;
+       if (defined $log_entry->{svm_revision}) {
+                print " (\@$log_entry->{svm_revision})" unless $::_q > 1;
+                $self->rev_map_set($log_entry->{svm_revision}, $commit,
+                                  0, $self->svm_uuid);
+       }
+       print " = $commit ($self->{ref_id})\n" unless $::_q > 1;
+       if (--$_gc_nr == 0) {
+               $_gc_nr = $_gc_period;
+               gc();
+       }
        return $commit;
 }
 
-sub revisions_eq {
-       my ($self, $r0, $r1) = @_;
-       return 1 if $r0 == $r1;
-       my $nr = 0;
-       $self->ra->get_log([$self->{path}], $r0, $r1,
-                          0, 0, 1, sub { $nr++ });
-       return 0 if ($nr > 1);
-       return 1;
+sub match_paths {
+       my ($self, $paths, $r) = @_;
+       return 1 if $self->{path} eq '';
+       if (my $path = $paths->{"/$self->{path}"}) {
+               return ($path->{action} eq 'D') ? 0 : 1;
+       }
+       $self->{path_regex} ||= qr/^\/\Q$self->{path}\E\//;
+       if (grep /$self->{path_regex}/, keys %$paths) {
+               return 1;
+       }
+       my $c = '';
+       foreach (split m#/#, $self->{path}) {
+               $c .= "/$_";
+               next unless ($paths->{$c} &&
+                            ($paths->{$c}->{action} =~ /^[AR]$/));
+               if ($self->ra->check_path($self->{path}, $r) ==
+                   $SVN::Node::dir) {
+                       return 1;
+               }
+       }
+       return 0;
 }
 
 sub find_parent_branch {
        my ($self, $paths, $rev) = @_;
-       return undef unless $::_follow_parent;
+       return undef unless $self->follow_parent;
        unless (defined $paths) {
+               my $err_handler = $SVN::Error::handler;
+               $SVN::Error::handler = \&Git::SVN::Ra::skip_unknown_revs;
                $self->ra->get_log([$self->{path}], $rev, $rev, 0, 1, 1,
-                                  sub { $paths = dup_changed_paths($_[0]) });
+                                  sub { $paths = $_[0] });
+               $SVN::Error::handler = $err_handler;
        }
        return undef unless defined $paths;
 
        # look for a parent from another branch:
-       my @b_path_components = split m#/#, $self->rel_path;
+       my @b_path_components = split m#/#, $self->{path};
        my @a_path_components;
        my $i;
        while (@b_path_components) {
                $i = $paths->{'/'.join('/', @b_path_components)};
-               last if $i;
+               last if $i && defined $i->{copyfrom_path};
                unshift(@a_path_components, pop(@b_path_components));
        }
-       goto not_found unless defined $i;
-       my $branch_from = $i->{copyfrom_path} or goto not_found;
+       return undef unless defined $i && defined $i->{copyfrom_path};
+       my $branch_from = $i->{copyfrom_path};
        if (@a_path_components) {
                print STDERR "branch_from: $branch_from => ";
                $branch_from .= '/'.join('/', @a_path_components);
@@ -1103,73 +2706,67 @@ sub find_parent_branch {
        my $r = $i->{copyfrom_rev};
        my $repos_root = $self->ra->{repos_root};
        my $url = $self->ra->{url};
-       my $new_url = $repos_root . $branch_from;
+       my $new_url = $url . $branch_from;
        print STDERR  "Found possible branch point: ",
-                     "$new_url => ", $self->full_url, ", $r\n";
+                     "$new_url => ", $self->full_url, ", $r\n"
+                     unless $::_q > 1;
        $branch_from =~ s#^/##;
-       my $remotes = read_all_remotes();
-       my $gs;
-       foreach my $repo_id (keys %$remotes) {
-               my $u = $remotes->{$repo_id}->{url} or next;
-               next if $url ne $u;
-               my $fetch = $remotes->{$repo_id}->{fetch};
-               foreach my $f (keys %$fetch) {
-                       next if $f ne $branch_from;
-                       $gs = Git::SVN->new($fetch->{$f}, $repo_id, $f);
-                       last;
-               }
-               last if $gs;
-       }
-       unless ($gs) {
-               my $ref_id = $branch_from;
-               $ref_id .= "\@$r" if find_ref($ref_id);
-               # just grow a tail if we're not unique enough :x
-               $ref_id .= '-' while find_ref($ref_id);
-               $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id);
-       }
+       my $gs = $self->other_gs($new_url, $url,
+                                $branch_from, $r, $self->{ref_id});
        my ($r0, $parent) = $gs->find_rev_before($r, 1);
-       if ($::_follow_parent && (!defined $r0 || !defined $parent)) {
-               $gs->fetch(0, $r);
-               ($r0, $parent) = $gs->last_rev_commit;
+       {
+               my ($base, $head);
+               if (!defined $r0 || !defined $parent) {
+                       ($base, $head) = parse_revision_argument(0, $r);
+               } else {
+                       if ($r0 < $r) {
+                               $gs->ra->get_log([$gs->{path}], $r0 + 1, $r, 1,
+                                       0, 1, sub { $base = $_[1] - 1 });
+                       }
+               }
+               if (defined $base && $base <= $r) {
+                       $gs->fetch($base, $r);
+               }
+               ($r0, $parent) = $gs->find_rev_before($r, 1);
        }
-       if (defined $r0 && defined $parent && $gs->revisions_eq($r0, $r)) {
-               print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
-               $self->assert_index_clean($parent);
+       if (defined $r0 && defined $parent) {
+               print STDERR "Found branch parent: ($self->{ref_id}) $parent\n"
+                            unless $::_q > 1;
                my $ed;
                if ($self->ra->can_do_switch) {
-                       print STDERR "Following parent with do_switch\n";
+                       $self->assert_index_clean($parent);
+                       print STDERR "Following parent with do_switch\n"
+                                    unless $::_q > 1;
                        # do_switch works with svn/trunk >= r22312, but that
-                       # is not included with SVN 1.4.2 (the latest version
+                       # is not included with SVN 1.4.3 (the latest version
                        # at the moment), so we can't rely on it
+                       $self->{last_rev} = $r0;
                        $self->{last_commit} = $parent;
-                       $ed = SVN::Git::Fetcher->new($self);
-                       $gs->ra->gs_do_switch($r0, $rev, $gs->{path}, 1,
+                       $ed = SVN::Git::Fetcher->new($self, $gs->{path});
+                       $gs->ra->gs_do_switch($r0, $rev, $gs,
                                              $self->full_url, $ed)
                          or die "SVN connection failed somewhere...\n";
+               } elsif ($self->ra->trees_match($new_url, $r0,
+                                               $self->full_url, $rev)) {
+                       print STDERR "Trees match:\n",
+                                    "  $new_url\@$r0\n",
+                                    "  ${\$self->full_url}\@$rev\n",
+                                    "Following parent with no changes\n"
+                                    unless $::_q > 1;
+                       $self->tmp_index_do(sub {
+                           command_noisy('read-tree', $parent);
+                       });
+                       $self->{last_commit} = $parent;
                } else {
-                       print STDERR "Following parent with do_update\n";
+                       print STDERR "Following parent with do_update\n"
+                                    unless $::_q > 1;
                        $ed = SVN::Git::Fetcher->new($self);
-                       $self->ra->gs_do_update($rev, $rev, $self->{path},
-                                               1, $ed)
+                       $self->ra->gs_do_update($rev, $rev, $self, $ed)
                          or die "SVN connection failed somewhere...\n";
                }
+               print STDERR "Successfully followed parent\n" unless $::_q > 1;
                return $self->make_log_entry($rev, [$parent], $ed);
        }
-not_found:
-       print STDERR "Branch parent for path: '/",
-                    $self->rel_path, "' @ r$rev not found:\n";
-       return undef unless $paths;
-       print STDERR "Changed paths:\n";
-       foreach my $x (sort keys %$paths) {
-               my $p = $paths->{$x};
-               print STDERR "\t$p->{action}\t$x";
-               if ($p->{copyfrom_path}) {
-                       print STDERR "(from $p->{copyfrom_path}: ",
-                                    "$p->{copyfrom_rev})";
-               }
-               print STDERR "\n";
-       }
-       print STDERR '-'x72, "\n";
        return undef;
 }
 
@@ -1177,11 +2774,19 @@ sub do_fetch {
        my ($self, $paths, $rev) = @_;
        my $ed;
        my ($last_rev, @parents);
-       if ($self->{last_commit}) {
+       if (my $lc = $self->last_commit) {
+               # we can have a branch that was deleted, then re-added
+               # under the same name but copied from another path, in
+               # which case we'll have multiple parents (we don't
+               # want to break the original ref, nor lose copypath info):
+               if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
+                       push @{$log_entry->{parents}}, $lc;
+                       return $log_entry;
+               }
                $ed = SVN::Git::Fetcher->new($self);
                $last_rev = $self->{last_rev};
-               $ed->{c} = $self->{last_commit};
-               @parents = ($self->{last_commit});
+               $ed->{c} = $lc;
+               @parents = ($lc);
        } else {
                $last_rev = $rev;
                if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
@@ -1189,13 +2794,68 @@ sub do_fetch {
                }
                $ed = SVN::Git::Fetcher->new($self);
        }
-       unless ($self->ra->gs_do_update($last_rev, $rev,
-                                       $self->{path}, 1, $ed)) {
+       unless ($self->ra->gs_do_update($last_rev, $rev, $self, $ed)) {
                die "SVN connection failed somewhere...\n";
        }
        $self->make_log_entry($rev, \@parents, $ed);
 }
 
+sub mkemptydirs {
+       my ($self, $r) = @_;
+
+       sub scan {
+               my ($r, $empty_dirs, $line) = @_;
+               if (defined $r && $line =~ /^r(\d+)$/) {
+                       return 0 if $1 > $r;
+               } elsif ($line =~ /^  \+empty_dir: (.+)$/) {
+                       $empty_dirs->{$1} = 1;
+               } elsif ($line =~ /^  \-empty_dir: (.+)$/) {
+                       my @d = grep {m[^\Q$1\E(/|$)]} (keys %$empty_dirs);
+                       delete @$empty_dirs{@d};
+               }
+               1; # continue
+       };
+
+       my %empty_dirs = ();
+       my $gz_file = "$self->{dir}/unhandled.log.gz";
+       if (-f $gz_file) {
+               if (!$can_compress) {
+                       warn "Compress::Zlib could not be found; ",
+                            "empty directories in $gz_file will not be read\n";
+               } else {
+                       my $gz = Compress::Zlib::gzopen($gz_file, "rb") or
+                               die "Unable to open $gz_file: $!\n";
+                       my $line;
+                       while ($gz->gzreadline($line) > 0) {
+                               scan($r, \%empty_dirs, $line) or last;
+                       }
+                       $gz->gzclose;
+               }
+       }
+
+       if (open my $fh, '<', "$self->{dir}/unhandled.log") {
+               binmode $fh or croak "binmode: $!";
+               while (<$fh>) {
+                       scan($r, \%empty_dirs, $_) or last;
+               }
+               close $fh;
+       }
+
+       my $strip = qr/\A\Q$self->{path}\E(?:\/|$)/;
+       foreach my $d (sort keys %empty_dirs) {
+               $d = uri_decode($d);
+               $d =~ s/$strip//;
+               next unless length($d);
+               next if -d $d;
+               if (-e $d) {
+                       warn "$d exists but is not a directory\n";
+               } else {
+                       print "creating empty directory: $d\n";
+                       mkpath([$d]);
+               }
+       }
+}
+
 sub get_untracked {
        my ($self, $ed) = @_;
        my @out;
@@ -1235,54 +2895,565 @@ sub get_untracked {
                        }
                }
        }
-       \@out;
-}
+       \@out;
+}
+
+# parse_svn_date(DATE)
+# --------------------
+# Given a date (in UTC) from Subversion, return a string in the format
+# "<TZ Offset> <local date/time>" that Git will use.
+#
+# By default the parsed date will be in UTC; if $Git::SVN::_localtime
+# is true we'll convert it to the local timezone instead.
+sub parse_svn_date {
+       my $date = shift || return '+0000 1970-01-01 00:00:00';
+       my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
+                                           (\d\d)\:(\d\d)\:(\d\d)\.\d*Z$/x) or
+                                        croak "Unable to parse date: $date\n";
+       my $parsed_date;    # Set next.
+
+       if ($Git::SVN::_localtime) {
+               # Translate the Subversion datetime to an epoch time.
+               # Begin by switching ourselves to $date's timezone, UTC.
+               my $old_env_TZ = $ENV{TZ};
+               $ENV{TZ} = 'UTC';
+
+               my $epoch_in_UTC =
+                   POSIX::strftime('%s', $S, $M, $H, $d, $m - 1, $Y - 1900);
+
+               # Determine our local timezone (including DST) at the
+               # time of $epoch_in_UTC.  $Git::SVN::Log::TZ stored the
+               # value of TZ, if any, at the time we were run.
+               if (defined $Git::SVN::Log::TZ) {
+                       $ENV{TZ} = $Git::SVN::Log::TZ;
+               } else {
+                       delete $ENV{TZ};
+               }
+
+               my $our_TZ =
+                   POSIX::strftime('%Z', $S, $M, $H, $d, $m - 1, $Y - 1900);
+
+               # This converts $epoch_in_UTC into our local timezone.
+               my ($sec, $min, $hour, $mday, $mon, $year,
+                   $wday, $yday, $isdst) = localtime($epoch_in_UTC);
+
+               $parsed_date = sprintf('%s %04d-%02d-%02d %02d:%02d:%02d',
+                                      $our_TZ, $year + 1900, $mon + 1,
+                                      $mday, $hour, $min, $sec);
+
+               # Reset us to the timezone in effect when we entered
+               # this routine.
+               if (defined $old_env_TZ) {
+                       $ENV{TZ} = $old_env_TZ;
+               } else {
+                       delete $ENV{TZ};
+               }
+       } else {
+               $parsed_date = "+0000 $Y-$m-$d $H:$M:$S";
+       }
+
+       return $parsed_date;
+}
+
+sub other_gs {
+       my ($self, $new_url, $url,
+           $branch_from, $r, $old_ref_id) = @_;
+       my $gs = Git::SVN->find_by_url($new_url, $url, $branch_from);
+       unless ($gs) {
+               my $ref_id = $old_ref_id;
+               $ref_id =~ s/\@\d+-*$//;
+               $ref_id .= "\@$r";
+               # just grow a tail if we're not unique enough :x
+               $ref_id .= '-' while find_ref($ref_id);
+               my ($u, $p, $repo_id) = ($new_url, '', $ref_id);
+               if ($u =~ s#^\Q$url\E(/|$)##) {
+                       $p = $u;
+                       $u = $url;
+                       $repo_id = $self->{repo_id};
+               }
+               while (1) {
+                       # It is possible to tag two different subdirectories at
+                       # the same revision.  If the url for an existing ref
+                       # does not match, we must either find a ref with a
+                       # matching url or create a new ref by growing a tail.
+                       $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1);
+                       my (undef, $max_commit) = $gs->rev_map_max(1);
+                       last if (!$max_commit);
+                       my ($url) = ::cmt_metadata($max_commit);
+                       last if ($url eq $gs->full_url);
+                       $ref_id .= '-';
+               }
+               print STDERR "Initializing parent: $ref_id\n" unless $::_q > 1;
+       }
+       $gs
+}
+
+sub call_authors_prog {
+       my ($orig_author) = @_;
+       $orig_author = command_oneline('rev-parse', '--sq-quote', $orig_author);
+       my $author = `$::_authors_prog $orig_author`;
+       if ($? != 0) {
+               die "$::_authors_prog failed with exit code $?\n"
+       }
+       if ($author =~ /^\s*(.+?)\s*<(.*)>\s*$/) {
+               my ($name, $email) = ($1, $2);
+               $email = undef if length $2 == 0;
+               return [$name, $email];
+       } else {
+               die "Author: $orig_author: $::_authors_prog returned "
+                       . "invalid author format: $author\n";
+       }
+}
+
+sub check_author {
+       my ($author) = @_;
+       if (!defined $author || length $author == 0) {
+               $author = '(no author)';
+       }
+       if (!defined $::users{$author}) {
+               if (defined $::_authors_prog) {
+                       $::users{$author} = call_authors_prog($author);
+               } elsif (defined $::_authors) {
+                       die "Author: $author not defined in $::_authors file\n";
+               }
+       }
+       $author;
+}
+
+sub find_extra_svk_parents {
+       my ($self, $ed, $tickets, $parents) = @_;
+       # aha!  svk:merge property changed...
+       my @tickets = split "\n", $tickets;
+       my @known_parents;
+       for my $ticket ( @tickets ) {
+               my ($uuid, $path, $rev) = split /:/, $ticket;
+               if ( $uuid eq $self->ra_uuid ) {
+                       my $url = $self->{url};
+                       my $repos_root = $url;
+                       my $branch_from = $path;
+                       $branch_from =~ s{^/}{};
+                       my $gs = $self->other_gs($repos_root."/".$branch_from,
+                                                $url,
+                                                $branch_from,
+                                                $rev,
+                                                $self->{ref_id});
+                       if ( my $commit = $gs->rev_map_get($rev, $uuid) ) {
+                               # wahey!  we found it, but it might be
+                               # an old one (!)
+                               push @known_parents, [ $rev, $commit ];
+                       }
+               }
+       }
+       # Ordering matters; highest-numbered commit merge tickets
+       # first, as they may account for later merge ticket additions
+       # or changes.
+       @known_parents = map {$_->[1]} sort {$b->[0] <=> $a->[0]} @known_parents;
+       for my $parent ( @known_parents ) {
+               my @cmd = ('rev-list', $parent, map { "^$_" } @$parents );
+               my ($msg_fh, $ctx) = command_output_pipe(@cmd);
+               my $new;
+               while ( <$msg_fh> ) {
+                       $new=1;last;
+               }
+               command_close_pipe($msg_fh, $ctx);
+               if ( $new ) {
+                       print STDERR
+                           "Found merge parent (svk:merge ticket): $parent\n";
+                       push @$parents, $parent;
+               }
+       }
+}
+
+sub lookup_svn_merge {
+       my $uuid = shift;
+       my $url = shift;
+       my $merge = shift;
+
+       my ($source, $revs) = split ":", $merge;
+       my $path = $source;
+       $path =~ s{^/}{};
+       my $gs = Git::SVN->find_by_url($url.$source, $url, $path);
+       if ( !$gs ) {
+               warn "Couldn't find revmap for $url$source\n";
+               return;
+       }
+       my @ranges = split ",", $revs;
+       my ($tip, $tip_commit);
+       my @merged_commit_ranges;
+       # find the tip
+       for my $range ( @ranges ) {
+               my ($bottom, $top) = split "-", $range;
+               $top ||= $bottom;
+               my $bottom_commit = $gs->find_rev_after( $bottom, 1, $top );
+               my $top_commit = $gs->find_rev_before( $top, 1, $bottom );
+
+               unless ($top_commit and $bottom_commit) {
+                       warn "W:unknown path/rev in svn:mergeinfo "
+                               ."dirprop: $source:$range\n";
+                       next;
+               }
+
+               push @merged_commit_ranges,
+                       "$bottom_commit^..$top_commit";
+
+               if ( !defined $tip or $top > $tip ) {
+                       $tip = $top;
+                       $tip_commit = $top_commit;
+               }
+       }
+       return ($tip_commit, @merged_commit_ranges);
+}
+
+sub _rev_list {
+       my ($msg_fh, $ctx) = command_output_pipe(
+               "rev-list", @_,
+              );
+       my @rv;
+       while ( <$msg_fh> ) {
+               chomp;
+               push @rv, $_;
+       }
+       command_close_pipe($msg_fh, $ctx);
+       @rv;
+}
+
+sub check_cherry_pick {
+       my $base = shift;
+       my $tip = shift;
+       my $parents = shift;
+       my @ranges = @_;
+       my %commits = map { $_ => 1 }
+               _rev_list("--no-merges", $tip, "--not", $base, @$parents);
+       for my $range ( @ranges ) {
+               delete @commits{_rev_list($range)};
+       }
+       for my $commit (keys %commits) {
+               if (has_no_changes($commit)) {
+                       delete $commits{$commit};
+               }
+       }
+       return (keys %commits);
+}
+
+sub has_no_changes {
+       my $commit = shift;
+
+       my @revs = split / /, command_oneline(
+               qw(rev-list --parents -1 -m), $commit);
+
+       # Commits with no parents, e.g. the start of a partial branch,
+       # have changes by definition.
+       return 1 if (@revs < 2);
+
+       # Commits with multiple parents, e.g a merge, have no changes
+       # by definition.
+       return 0 if (@revs > 2);
+
+       return (command_oneline("rev-parse", "$commit^{tree}") eq
+               command_oneline("rev-parse", "$commit~1^{tree}"));
+}
+
+# The GIT_DIR environment variable is not always set until after the command
+# line arguments are processed, so we can't memoize in a BEGIN block.
+{
+       my $memoized = 0;
+
+       sub memoize_svn_mergeinfo_functions {
+               return if $memoized;
+               $memoized = 1;
+
+               my $cache_path = "$ENV{GIT_DIR}/svn/.caches/";
+               mkpath([$cache_path]) unless -d $cache_path;
+
+               tie my %lookup_svn_merge_cache => 'Memoize::Storable',
+                   "$cache_path/lookup_svn_merge.db", 'nstore';
+               memoize 'lookup_svn_merge',
+                       SCALAR_CACHE => 'FAULT',
+                       LIST_CACHE => ['HASH' => \%lookup_svn_merge_cache],
+               ;
+
+               tie my %check_cherry_pick_cache => 'Memoize::Storable',
+                   "$cache_path/check_cherry_pick.db", 'nstore';
+               memoize 'check_cherry_pick',
+                       SCALAR_CACHE => 'FAULT',
+                       LIST_CACHE => ['HASH' => \%check_cherry_pick_cache],
+               ;
+
+               tie my %has_no_changes_cache => 'Memoize::Storable',
+                   "$cache_path/has_no_changes.db", 'nstore';
+               memoize 'has_no_changes',
+                       SCALAR_CACHE => ['HASH' => \%has_no_changes_cache],
+                       LIST_CACHE => 'FAULT',
+               ;
+       }
+
+       sub unmemoize_svn_mergeinfo_functions {
+               return if not $memoized;
+               $memoized = 0;
+
+               Memoize::unmemoize 'lookup_svn_merge';
+               Memoize::unmemoize 'check_cherry_pick';
+               Memoize::unmemoize 'has_no_changes';
+       }
+}
+
+END {
+       # Force cache writeout explicitly instead of waiting for
+       # global destruction to avoid segfault in Storable:
+       # http://rt.cpan.org/Public/Bug/Display.html?id=36087
+       unmemoize_svn_mergeinfo_functions();
+}
+
+sub parents_exclude {
+       my $parents = shift;
+       my @commits = @_;
+       return unless @commits;
+
+       my @excluded;
+       my $excluded;
+       do {
+               my @cmd = ('rev-list', "-1", @commits, "--not", @$parents );
+               $excluded = command_oneline(@cmd);
+               if ( $excluded ) {
+                       my @new;
+                       my $found;
+                       for my $commit ( @commits ) {
+                               if ( $commit eq $excluded ) {
+                                       push @excluded, $commit;
+                                       $found++;
+                                       last;
+                               }
+                               else {
+                                       push @new, $commit;
+                               }
+                       }
+                       die "saw commit '$excluded' in rev-list output, "
+                               ."but we didn't ask for that commit (wanted: @commits --not @$parents)"
+                                       unless $found;
+                       @commits = @new;
+               }
+       }
+               while ($excluded and @commits);
 
-sub parse_svn_date {
-       my $date = shift || return '+0000 1970-01-01 00:00:00';
-       my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
-                                           (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x) or
-                                        croak "Unable to parse date: $date\n";
-       "+0000 $Y-$m-$d $H:$M:$S";
+       return @excluded;
 }
 
-sub check_author {
-       my ($author) = @_;
-       if (!defined $author || length $author == 0) {
-               $author = '(no author)';
+
+# note: this function should only be called if the various dirprops
+# have actually changed
+sub find_extra_svn_parents {
+       my ($self, $ed, $mergeinfo, $parents) = @_;
+       # aha!  svk:merge property changed...
+
+       memoize_svn_mergeinfo_functions();
+
+       # We first search for merged tips which are not in our
+       # history.  Then, we figure out which git revisions are in
+       # that tip, but not this revision.  If all of those revisions
+       # are now marked as merge, we can add the tip as a parent.
+       my @merges = split "\n", $mergeinfo;
+       my @merge_tips;
+       my $url = $self->{url};
+       my $uuid = $self->ra_uuid;
+       my %ranges;
+       for my $merge ( @merges ) {
+               my ($tip_commit, @ranges) =
+                       lookup_svn_merge( $uuid, $url, $merge );
+               unless (!$tip_commit or
+                               grep { $_ eq $tip_commit } @$parents ) {
+                       push @merge_tips, $tip_commit;
+                       $ranges{$tip_commit} = \@ranges;
+               } else {
+                       push @merge_tips, undef;
+               }
        }
-       if (defined $::_authors && ! defined $::users{$author}) {
-               die "Author: $author not defined in $::_authors file\n";
+
+       my %excluded = map { $_ => 1 }
+               parents_exclude($parents, grep { defined } @merge_tips);
+
+       # check merge tips for new parents
+       my @new_parents;
+       for my $merge_tip ( @merge_tips ) {
+               my $spec = shift @merges;
+               next unless $merge_tip and $excluded{$merge_tip};
+
+               my $ranges = $ranges{$merge_tip};
+
+               # check out 'new' tips
+               my $merge_base;
+               eval {
+                       $merge_base = command_oneline(
+                               "merge-base",
+                               @$parents, $merge_tip,
+                       );
+               };
+               if ($@) {
+                       die "An error occurred during merge-base"
+                               unless $@->isa("Git::Error::Command");
+
+                       warn "W: Cannot find common ancestor between ".
+                            "@$parents and $merge_tip. Ignoring merge info.\n";
+                       next;
+               }
+
+               # double check that there are no missing non-merge commits
+               my (@incomplete) = check_cherry_pick(
+                       $merge_base, $merge_tip,
+                       $parents,
+                       @$ranges,
+                      );
+
+               if ( @incomplete ) {
+                       warn "W:svn cherry-pick ignored ($spec) - missing "
+                               .@incomplete." commit(s) (eg $incomplete[0])\n";
+               } else {
+                       warn
+                               "Found merge parent (svn:mergeinfo prop): ",
+                                       $merge_tip, "\n";
+                       push @new_parents, $merge_tip;
+               }
        }
-       $author;
+
+       # cater for merges which merge commits from multiple branches
+       if ( @new_parents > 1 ) {
+               for ( my $i = 0; $i <= $#new_parents; $i++ ) {
+                       for ( my $j = 0; $j <= $#new_parents; $j++ ) {
+                               next if $i == $j;
+                               next unless $new_parents[$i];
+                               next unless $new_parents[$j];
+                               my $revs = command_oneline(
+                                       "rev-list", "-1",
+                                       "$new_parents[$i]..$new_parents[$j]",
+                                      );
+                               if ( !$revs ) {
+                                       undef($new_parents[$j]);
+                               }
+                       }
+               }
+       }
+       push @$parents, grep { defined } @new_parents;
 }
 
 sub make_log_entry {
        my ($self, $rev, $parents, $ed) = @_;
        my $untracked = $self->get_untracked($ed);
 
-       return undef if ($ed->{nr} == 0 && scalar @$untracked == 0);
+       my @parents = @$parents;
+       my $ps = $ed->{path_strip} || "";
+       for my $path ( grep { m/$ps/ } %{$ed->{dir_prop}} ) {
+               my $props = $ed->{dir_prop}{$path};
+               if ( $props->{"svk:merge"} ) {
+                       $self->find_extra_svk_parents
+                               ($ed, $props->{"svk:merge"}, \@parents);
+               }
+               if ( $props->{"svn:mergeinfo"} ) {
+                       $self->find_extra_svn_parents
+                               ($ed,
+                                $props->{"svn:mergeinfo"},
+                                \@parents);
+               }
+       }
 
        open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
        print $un "r$rev\n" or croak $!;
        print $un $_, "\n" foreach @$untracked;
-       my %log_entry = ( parents => $parents || [], revision => $rev,
+       my %log_entry = ( parents => \@parents, revision => $rev,
                          log => '');
-       my $rp = $self->ra->rev_proplist($rev);
-       foreach (sort keys %$rp) {
-               my $v = $rp->{$_};
-               if (/^svn:(author|date|log)$/) {
-                       $log_entry{$1} = $v;
-               } else {
-                       print $un "  rev_prop: ", uri_encode($_), ' ',
-                                 uri_encode($v), "\n";
+
+       my $headrev;
+       my $logged = delete $self->{logged_rev_props};
+       if (!$logged || $self->{-want_revprops}) {
+               my $rp = $self->ra->rev_proplist($rev);
+               foreach (sort keys %$rp) {
+                       my $v = $rp->{$_};
+                       if (/^svn:(author|date|log)$/) {
+                               $log_entry{$1} = $v;
+                       } elsif ($_ eq 'svm:headrev') {
+                               $headrev = $v;
+                       } else {
+                               print $un "  rev_prop: ", uri_encode($_), ' ',
+                                         uri_encode($v), "\n";
+                       }
                }
+       } else {
+               map { $log_entry{$_} = $logged->{$_} } keys %$logged;
        }
        close $un or croak $!;
 
        $log_entry{date} = parse_svn_date($log_entry{date});
-       $log_entry{author} = check_author($log_entry{author});
        $log_entry{log} .= "\n";
+       my $author = $log_entry{author} = check_author($log_entry{author});
+       my ($name, $email) = defined $::users{$author} ? @{$::users{$author}}
+                                                      : ($author, undef);
+
+       my ($commit_name, $commit_email) = ($name, $email);
+       if ($_use_log_author) {
+               my $name_field;
+               if ($log_entry{log} =~ /From:\s+(.*\S)\s*\n/i) {
+                       $name_field = $1;
+               } elsif ($log_entry{log} =~ /Signed-off-by:\s+(.*\S)\s*\n/i) {
+                       $name_field = $1;
+               }
+               if (!defined $name_field) {
+                       if (!defined $email) {
+                               $email = $name;
+                       }
+               } elsif ($name_field =~ /(.*?)\s+<(.*)>/) {
+                       ($name, $email) = ($1, $2);
+               } elsif ($name_field =~ /(.*)@/) {
+                       ($name, $email) = ($1, $name_field);
+               } else {
+                       ($name, $email) = ($name_field, $name_field);
+               }
+       }
+       if (defined $headrev && $self->use_svm_props) {
+               if ($self->rewrite_root) {
+                       die "Can't have both 'useSvmProps' and 'rewriteRoot' ",
+                           "options set!\n";
+               }
+               if ($self->rewrite_uuid) {
+                       die "Can't have both 'useSvmProps' and 'rewriteUUID' ",
+                           "options set!\n";
+               }
+               my ($uuid, $r) = $headrev =~ m{^([a-f\d\-]{30,}):(\d+)$}i;
+               # we don't want "SVM: initializing mirror for junk" ...
+               return undef if $r == 0;
+               my $svm = $self->svm;
+               if ($uuid ne $svm->{uuid}) {
+                       die "UUID mismatch on SVM path:\n",
+                           "expected: $svm->{uuid}\n",
+                           "     got: $uuid\n";
+               }
+               my $full_url = $self->full_url;
+               $full_url =~ s#^\Q$svm->{replace}\E(/|$)#$svm->{source}$1# or
+                            die "Failed to replace '$svm->{replace}' with ",
+                                "'$svm->{source}' in $full_url\n";
+               # throw away username for storing in records
+               remove_username($full_url);
+               $log_entry{metadata} = "$full_url\@$r $uuid";
+               $log_entry{svm_revision} = $r;
+               $email ||= "$author\@$uuid";
+               $commit_email ||= "$author\@$uuid";
+       } elsif ($self->use_svnsync_props) {
+               my $full_url = $self->svnsync->{url};
+               $full_url .= "/$self->{path}" if length $self->{path};
+               remove_username($full_url);
+               my $uuid = $self->svnsync->{uuid};
+               $log_entry{metadata} = "$full_url\@$rev $uuid";
+               $email ||= "$author\@$uuid";
+               $commit_email ||= "$author\@$uuid";
+       } else {
+               my $url = $self->metadata_url;
+               remove_username($url);
+               my $uuid = $self->rewrite_uuid || $self->ra->get_uuid;
+               $log_entry{metadata} = "$url\@$rev " . $uuid;
+               $email ||= "$author\@" . $uuid;
+               $commit_email ||= "$author\@" . $uuid;
+       }
+       $log_entry{name} = $name;
+       $log_entry{email} = $email;
+       $log_entry{commit_name} = $commit_name;
+       $log_entry{commit_email} = $commit_email;
        \%log_entry;
 }
 
@@ -1290,60 +3461,20 @@ sub fetch {
        my ($self, $min_rev, $max_rev, @parents) = @_;
        my ($last_rev, $last_commit) = $self->last_rev_commit;
        my ($base, $head) = $self->get_fetch_range($min_rev, $max_rev);
-       return if ($base > $head);
-       if (defined $last_commit) {
-               $self->assert_index_clean($last_commit);
-       }
-       my $inc = 1000;
-       my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
-       my $err_handler = $SVN::Error::handler;
-       my $err;
-       $SVN::Error::handler = sub { ($err) = @_; skip_unknown_revs($err); } ;
-       while (1) {
-               my @revs;
-               $self->ra->get_log([$self->{path}], $min, $max, 0, 1, 1,
-                   sub {
-                       my ($paths, $rev) = @_;
-                       push @revs, [ dup_changed_paths($paths), $rev ];
-                       });
-               if (! @revs && $err && $max >= $head) {
-                       print STDERR "Branch probably deleted:\n  ",
-                                    $err->expanded_message,
-                                    "\nWill attempt to follow revisions ",
-                                    "r$min .. r$max",
-                                    "committed before the deletion\n";
-                       @revs = map { [ undef, $_ ] } ($min .. $max);
-               }
-               foreach (@revs) {
-                       if (my $log_entry = $self->do_fetch(@$_)) {
-                               $self->do_git_commit($log_entry, @parents);
-                       }
-               }
-               last if $max >= $head;
-               $min = $max + 1;
-               $max += $inc;
-               $max = $head if ($max > $head);
-       }
-       $SVN::Error::handler = $err_handler;
+       $self->ra->gs_fetch_loop_common($base, $head, [$self]);
 }
 
 sub set_tree_cb {
        my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
-       # TODO: enable and test optimized commits:
-       if (0 && $rev == ($self->{last_rev} + 1)) {
-               $log_entry->{revision} = $rev;
-               $log_entry->{author} = $author;
-               $self->do_git_commit($log_entry, "$rev=$tree");
-       } else {
-               $self->fetch(undef, undef, "$rev=$tree");
-       }
+       $self->{inject_parents} = { $rev => $tree };
+       $self->fetch(undef, undef);
 }
 
 sub set_tree {
        my ($self, $tree) = (shift, shift);
        my $log_entry = ::get_commit_entry($tree);
        unless ($self->{last_rev}) {
-               fatal("Must have an existing revision to commit\n");
+               ::fatal("Must have an existing revision to commit");
        }
        my %ed_opts = ( r => $self->{last_rev},
                        log => $log_entry->{log},
@@ -1358,92 +3489,320 @@ sub set_tree {
        }
 }
 
-sub skip_unknown_revs {
-       my ($err) = @_;
-       my $errno = $err->apr_err();
-       # Maybe the branch we're tracking didn't
-       # exist when the repo started, so it's
-       # not an error if it doesn't, just continue
-       #
-       # Wonderfully consistent library, eh?
-       # 160013 - svn:// and file://
-       # 175002 - http(s)://
-       # 175007 - http(s):// (this repo required authorization, too...)
-       #   More codes may be discovered later...
-       if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
-               return;
+sub rebuild_from_rev_db {
+       my ($self, $path) = @_;
+       my $r = -1;
+       open my $fh, '<', $path or croak "open: $!";
+       binmode $fh or croak "binmode: $!";
+       while (<$fh>) {
+               length($_) == 41 or croak "inconsistent size in ($_) != 41";
+               chomp($_);
+               ++$r;
+               next if $_ eq ('0' x 40);
+               $self->rev_map_set($r, $_);
+               print "r$r = $_\n";
        }
-       croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
+       close $fh or croak "close: $!";
+       unlink $path or croak "unlink: $!";
 }
 
-# svn_log_changed_path_t objects passed to get_log are likely to be
-# overwritten even if only the refs are copied to an external variable,
-# so we should dup the structures in their entirety.  Using an externally
-# passed pool (instead of our temporary and quickly cleared pool in
-# Git::SVN::Ra) does not help matters at all...
-sub dup_changed_paths {
-       my ($paths) = @_;
-       return undef unless $paths;
-       my %ret;
-       foreach my $p (keys %$paths) {
-               my $i = $paths->{$p};
-               my %s = map { $_ => $i->$_ }
-                             qw/copyfrom_path copyfrom_rev action/;
-               $ret{$p} = \%s;
+sub rebuild {
+       my ($self) = @_;
+       my $map_path = $self->map_path;
+       my $partial = (-e $map_path && ! -z $map_path);
+       return unless ::verify_ref($self->refname.'^0');
+       if (!$partial && ($self->use_svm_props || $self->no_metadata)) {
+               my $rev_db = $self->rev_db_path;
+               $self->rebuild_from_rev_db($rev_db);
+               if ($self->use_svm_props) {
+                       my $svm_rev_db = $self->rev_db_path($self->svm_uuid);
+                       $self->rebuild_from_rev_db($svm_rev_db);
+               }
+               $self->unlink_rev_db_symlink;
+               return;
        }
-       \%ret;
+       print "Rebuilding $map_path ...\n" if (!$partial);
+       my ($base_rev, $head) = ($partial ? $self->rev_map_max_norebuild(1) :
+               (undef, undef));
+       my ($log, $ctx) =
+           command_output_pipe(qw/rev-list --pretty=raw --no-color --reverse/,
+                               ($head ? "$head.." : "") . $self->refname,
+                               '--');
+       my $metadata_url = $self->metadata_url;
+       remove_username($metadata_url);
+       my $svn_uuid = $self->rewrite_uuid || $self->ra_uuid;
+       my $c;
+       while (<$log>) {
+               if ( m{^commit ($::sha1)$} ) {
+                       $c = $1;
+                       next;
+               }
+               next unless s{^\s*(git-svn-id:)}{$1};
+               my ($url, $rev, $uuid) = ::extract_metadata($_);
+               remove_username($url);
+
+               # ignore merges (from set-tree)
+               next if (!defined $rev || !$uuid);
+
+               # if we merged or otherwise started elsewhere, this is
+               # how we break out of it
+               if (($uuid ne $svn_uuid) ||
+                   ($metadata_url && $url && ($url ne $metadata_url))) {
+                       next;
+               }
+               if ($partial && $head) {
+                       print "Partial-rebuilding $map_path ...\n";
+                       print "Currently at $base_rev = $head\n";
+                       $head = undef;
+               }
+
+               $self->rev_map_set($rev, $c);
+               print "r$rev = $c\n";
+       }
+       command_close_pipe($log, $ctx);
+       print "Done rebuilding $map_path\n" if (!$partial || !$head);
+       my $rev_db_path = $self->rev_db_path;
+       if (-f $self->rev_db_path) {
+               unlink $self->rev_db_path or croak "unlink: $!";
+       }
+       $self->unlink_rev_db_symlink;
 }
 
-# rev_db:
+# rev_map:
 # Tie::File seems to be prone to offset errors if revisions get sparse,
 # it's not that fast, either.  Tie::File is also not in Perl 5.6.  So
 # one of my favorite modules is out :<  Next up would be one of the DBM
-# modules, but I'm not sure which is most portable...  So I'll just
-# go with something that's plain-text, but still capable of
-# being randomly accessed.  So here's my ultra-simple fixed-width
-# database.  All records are 40 characters + "\n", so it's easy to seek
-# to a revision: (41 * rev) is the byte offset.
-# A record of 40 0s denotes an empty revision.
-# And yes, it's still pretty fast (faster than Tie::File).
-
-sub rev_db_set {
-       my ($self, $rev, $commit) = @_;
-       length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
-       open my $fh, '+<', $self->{db_path} or croak $!;
-       my $offset = $rev * 41;
-       # assume that append is the common case:
-       seek $fh, 0, 2 or croak $!;
-       my $pos = tell $fh;
-       if ($pos < $offset) {
-               print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
-                 or croak $!;
-       }
-       seek $fh, $offset, 0 or croak $!;
-       print $fh $commit,"\n" or croak $!;
+# modules, but I'm not sure which is most portable...
+#
+# This is the replacement for the rev_db format, which was too big
+# and inefficient for large repositories with a lot of sparse history
+# (mainly tags)
+#
+# The format is this:
+#   - 24 bytes for every record,
+#     * 4 bytes for the integer representing an SVN revision number
+#     * 20 bytes representing the sha1 of a git commit
+#   - No empty padding records like the old format
+#     (except the last record, which can be overwritten)
+#   - new records are written append-only since SVN revision numbers
+#     increase monotonically
+#   - lookups on SVN revision number are done via a binary search
+#   - Piping the file to xxd -c24 is a good way of dumping it for
+#     viewing or editing (piped back through xxd -r), should the need
+#     ever arise.
+#   - The last record can be padding revision with an all-zero sha1
+#     This is used to optimize fetch performance when using multiple
+#     "fetch" directives in .git/config
+#
+# These files are disposable unless noMetadata or useSvmProps is set
+
+sub _rev_map_set {
+       my ($fh, $rev, $commit) = @_;
+
+       binmode $fh or croak "binmode: $!";
+       my $size = (stat($fh))[7];
+       ($size % 24) == 0 or croak "inconsistent size: $size";
+
+       my $wr_offset = 0;
+       if ($size > 0) {
+               sysseek($fh, -24, SEEK_END) or croak "seek: $!";
+               my $read = sysread($fh, my $buf, 24) or croak "read: $!";
+               $read == 24 or croak "read only $read bytes (!= 24)";
+               my ($last_rev, $last_commit) = unpack(rev_map_fmt, $buf);
+               if ($last_commit eq ('0' x40)) {
+                       if ($size >= 48) {
+                               sysseek($fh, -48, SEEK_END) or croak "seek: $!";
+                               $read = sysread($fh, $buf, 24) or
+                                   croak "read: $!";
+                               $read == 24 or
+                                   croak "read only $read bytes (!= 24)";
+                               ($last_rev, $last_commit) =
+                                   unpack(rev_map_fmt, $buf);
+                               if ($last_commit eq ('0' x40)) {
+                                       croak "inconsistent .rev_map\n";
+                               }
+                       }
+                       if ($last_rev >= $rev) {
+                               croak "last_rev is higher!: $last_rev >= $rev";
+                       }
+                       $wr_offset = -24;
+               }
+       }
+       sysseek($fh, $wr_offset, SEEK_END) or croak "seek: $!";
+       syswrite($fh, pack(rev_map_fmt, $rev, $commit), 24) == 24 or
+         croak "write: $!";
+}
+
+sub _rev_map_reset {
+       my ($fh, $rev, $commit) = @_;
+       my $c = _rev_map_get($fh, $rev);
+       $c eq $commit or die "_rev_map_reset(@_) commit $c does not match!\n";
+       my $offset = sysseek($fh, 0, SEEK_CUR) or croak "seek: $!";
+       truncate $fh, $offset or croak "truncate: $!";
+}
+
+sub mkfile {
+       my ($path) = @_;
+       unless (-e $path) {
+               my ($dir, $base) = ($path =~ m#^(.*?)/?([^/]+)$#);
+               mkpath([$dir]) unless -d $dir;
+               open my $fh, '>>', $path or die "Couldn't create $path: $!\n";
+               close $fh or die "Couldn't close (create) $path: $!\n";
+       }
+}
+
+sub rev_map_set {
+       my ($self, $rev, $commit, $update_ref, $uuid) = @_;
+       defined $commit or die "missing arg3\n";
+       length $commit == 40 or die "arg3 must be a full SHA1 hexsum\n";
+       my $db = $self->map_path($uuid);
+       my $db_lock = "$db.lock";
+       my $sig;
+       $update_ref ||= 0;
+       if ($update_ref) {
+               $SIG{INT} = $SIG{HUP} = $SIG{TERM} = $SIG{ALRM} = $SIG{PIPE} =
+                           $SIG{USR1} = $SIG{USR2} = sub { $sig = $_[0] };
+       }
+       mkfile($db);
+
+       $LOCKFILES{$db_lock} = 1;
+       my $sync;
+       # both of these options make our .rev_db file very, very important
+       # and we can't afford to lose it because rebuild() won't work
+       if ($self->use_svm_props || $self->no_metadata) {
+               $sync = 1;
+               copy($db, $db_lock) or die "rev_map_set(@_): ",
+                                          "Failed to copy: ",
+                                          "$db => $db_lock ($!)\n";
+       } else {
+               rename $db, $db_lock or die "rev_map_set(@_): ",
+                                           "Failed to rename: ",
+                                           "$db => $db_lock ($!)\n";
+       }
+
+       sysopen(my $fh, $db_lock, O_RDWR | O_CREAT)
+            or croak "Couldn't open $db_lock: $!\n";
+       $update_ref eq 'reset' ? _rev_map_reset($fh, $rev, $commit) :
+                                _rev_map_set($fh, $rev, $commit);
+       if ($sync) {
+               $fh->flush or die "Couldn't flush $db_lock: $!\n";
+               $fh->sync or die "Couldn't sync $db_lock: $!\n";
+       }
        close $fh or croak $!;
+       if ($update_ref) {
+               $_head = $self;
+               my $note = "";
+               $note = " ($update_ref)" if ($update_ref !~ /^\d*$/);
+               command_noisy('update-ref', '-m', "r$rev$note",
+                             $self->refname, $commit);
+       }
+       rename $db_lock, $db or die "rev_map_set(@_): ", "Failed to rename: ",
+                                   "$db_lock => $db ($!)\n";
+       delete $LOCKFILES{$db_lock};
+       if ($update_ref) {
+               $SIG{INT} = $SIG{HUP} = $SIG{TERM} = $SIG{ALRM} = $SIG{PIPE} =
+                           $SIG{USR1} = $SIG{USR2} = 'DEFAULT';
+               kill $sig, $$ if defined $sig;
+       }
+}
+
+# If want_commit, this will return an array of (rev, commit) where
+# commit _must_ be a valid commit in the archive.
+# Otherwise, it'll return the max revision (whether or not the
+# commit is valid or just a 0x40 placeholder).
+sub rev_map_max {
+       my ($self, $want_commit) = @_;
+       $self->rebuild;
+       my ($r, $c) = $self->rev_map_max_norebuild($want_commit);
+       $want_commit ? ($r, $c) : $r;
+}
+
+sub rev_map_max_norebuild {
+       my ($self, $want_commit) = @_;
+       my $map_path = $self->map_path;
+       stat $map_path or return $want_commit ? (0, undef) : 0;
+       sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+       binmode $fh or croak "binmode: $!";
+       my $size = (stat($fh))[7];
+       ($size % 24) == 0 or croak "inconsistent size: $size";
+
+       if ($size == 0) {
+               close $fh or croak "close: $!";
+               return $want_commit ? (0, undef) : 0;
+       }
+
+       sysseek($fh, -24, SEEK_END) or croak "seek: $!";
+       sysread($fh, my $buf, 24) == 24 or croak "read: $!";
+       my ($r, $c) = unpack(rev_map_fmt, $buf);
+       if ($want_commit && $c eq ('0' x40)) {
+               if ($size < 48) {
+                       return $want_commit ? (0, undef) : 0;
+               }
+               sysseek($fh, -48, SEEK_END) or croak "seek: $!";
+               sysread($fh, $buf, 24) == 24 or croak "read: $!";
+               ($r, $c) = unpack(rev_map_fmt, $buf);
+               if ($c eq ('0'x40)) {
+                       croak "Penultimate record is all-zeroes in $map_path";
+               }
+       }
+       close $fh or croak "close: $!";
+       $want_commit ? ($r, $c) : $r;
 }
 
-sub rev_db_get {
-       my ($self, $rev) = @_;
-       my $ret;
-       my $offset = $rev * 41;
-       open my $fh, '<', $self->{db_path} or croak $!;
-       if (seek $fh, $offset, 0) {
-               $ret = readline $fh;
-               if (defined $ret) {
-                       chomp $ret;
-                       $ret = undef if ($ret =~ /^0{40}$/);
+sub rev_map_get {
+       my ($self, $rev, $uuid) = @_;
+       my $map_path = $self->map_path($uuid);
+       return undef unless -e $map_path;
+
+       sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+       my $c = _rev_map_get($fh, $rev);
+       close($fh) or croak "close: $!";
+       $c
+}
+
+sub _rev_map_get {
+       my ($fh, $rev) = @_;
+
+       binmode $fh or croak "binmode: $!";
+       my $size = (stat($fh))[7];
+       ($size % 24) == 0 or croak "inconsistent size: $size";
+
+       if ($size == 0) {
+               return undef;
+       }
+
+       my ($l, $u) = (0, $size - 24);
+       my ($r, $c, $buf);
+
+       while ($l <= $u) {
+               my $i = int(($l/24 + $u/24) / 2) * 24;
+               sysseek($fh, $i, SEEK_SET) or croak "seek: $!";
+               sysread($fh, my $buf, 24) == 24 or croak "read: $!";
+               my ($r, $c) = unpack(rev_map_fmt, $buf);
+
+               if ($r < $rev) {
+                       $l = $i + 24;
+               } elsif ($r > $rev) {
+                       $u = $i - 24;
+               } else { # $r == $rev
+                       return $c eq ('0' x 40) ? undef : $c;
                }
        }
-       close $fh or croak $!;
-       $ret;
+       undef;
 }
 
+# Finds the first svn revision that exists on (if $eq_ok is true) or
+# before $rev for the current branch.  It will not search any lower
+# than $min_rev.  Returns the git commit hash and svn revision number
+# if found, else (undef, undef).
 sub find_rev_before {
-       my ($self, $rev, $eq_ok) = @_;
+       my ($self, $rev, $eq_ok, $min_rev) = @_;
        --$rev unless $eq_ok;
-       while ($rev > 0) {
-               if (my $c = $self->rev_db_get($rev)) {
+       $min_rev ||= 1;
+       my $max_rev = $self->rev_map_max;
+       $rev = $max_rev if ($rev > $max_rev);
+       while ($rev >= $min_rev) {
+               if (my $c = $self->rev_map_get($rev)) {
                        return ($rev, $c);
                }
                --$rev;
@@ -1451,25 +3810,76 @@ sub find_rev_before {
        return (undef, undef);
 }
 
+# Finds the first svn revision that exists on (if $eq_ok is true) or
+# after $rev for the current branch.  It will not search any higher
+# than $max_rev.  Returns the git commit hash and svn revision number
+# if found, else (undef, undef).
+sub find_rev_after {
+       my ($self, $rev, $eq_ok, $max_rev) = @_;
+       ++$rev unless $eq_ok;
+       $max_rev ||= $self->rev_map_max;
+       while ($rev <= $max_rev) {
+               if (my $c = $self->rev_map_get($rev)) {
+                       return ($rev, $c);
+               }
+               ++$rev;
+       }
+       return (undef, undef);
+}
+
 sub _new {
        my ($class, $repo_id, $ref_id, $path) = @_;
        unless (defined $repo_id && length $repo_id) {
                $repo_id = $Git::SVN::default_repo_id;
        }
        unless (defined $ref_id && length $ref_id) {
-               $_[2] = $ref_id = $Git::SVN::default_ref_id;
+               $_prefix = '' unless defined($_prefix);
+               $_[2] = $ref_id =
+                            "refs/remotes/$_prefix$Git::SVN::default_ref_id";
        }
-       $_[1] = $repo_id = sanitize_remote_name($repo_id);
+       $_[1] = $repo_id;
        my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
+
+       # Older repos imported by us used $GIT_DIR/svn/foo instead of
+       # $GIT_DIR/svn/refs/remotes/foo when tracking refs/remotes/foo
+       if ($ref_id =~ m{^refs/remotes/(.*)}) {
+               my $old_dir = "$ENV{GIT_DIR}/svn/$1";
+               if (-d $old_dir && ! -d $dir) {
+                       $dir = $old_dir;
+               }
+       }
+
        $_[3] = $path = '' unless (defined $path);
        mkpath([$dir]);
-       unless (-f "$dir/.rev_db") {
-               open my $fh, '>>', "$dir/.rev_db" or croak $!;
-               close $fh or croak $!;
+       bless {
+               ref_id => $ref_id, dir => $dir, index => "$dir/index",
+               path => $path, config => "$ENV{GIT_DIR}/svn/config",
+               map_root => "$dir/.rev_map", repo_id => $repo_id }, $class;
+}
+
+# for read-only access of old .rev_db formats
+sub unlink_rev_db_symlink {
+       my ($self) = @_;
+       my $link = $self->rev_db_path;
+       $link =~ s/\.[\w-]+$// or croak "missing UUID at the end of $link";
+       if (-l $link) {
+               unlink $link or croak "unlink: $link failed!";
        }
-       bless { ref_id => $ref_id, dir => $dir, index => "$dir/index",
-               path => $path,
-               db_path => "$dir/.rev_db", repo_id => $repo_id }, $class;
+}
+
+sub rev_db_path {
+       my ($self, $uuid) = @_;
+       my $db_path = $self->map_path($uuid);
+       $db_path =~ s{/\.rev_map\.}{/\.rev_db\.}
+           or croak "map_path: $db_path does not contain '/.rev_map.' !";
+       $db_path;
+}
+
+# the new replacement for .rev_db
+sub map_path {
+       my ($self, $uuid) = @_;
+       $uuid ||= $self->ra_uuid;
+       "$self->{map_root}.$uuid";
 }
 
 sub uri_encode {
@@ -1478,6 +3888,16 @@ sub uri_encode {
        $f
 }
 
+sub uri_decode {
+       my ($f) = @_;
+       $f =~ s#%([0-9a-fA-F]{2})#chr(hex($1))#eg;
+       $f
+}
+
+sub remove_username {
+       $_[0] =~ s{^([^:]*://)[^@]+@}{$1};
+}
+
 package Git::SVN::Prompt;
 use strict;
 use warnings;
@@ -1507,23 +3927,31 @@ sub ssl_server_trust {
        my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
        $may_save = undef if $_no_auth_cache;
        print STDERR "Error validating server certificate for '$realm':\n";
-       if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
-               print STDERR " - The certificate is not issued by a trusted ",
-                     "authority. Use the\n",
-                     "   fingerprint to validate the certificate manually!\n";
-       }
-       if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
-               print STDERR " - The certificate hostname does not match.\n";
-       }
-       if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
-               print STDERR " - The certificate is not yet valid.\n";
-       }
-       if ($failures & $SVN::Auth::SSL::EXPIRED) {
-               print STDERR " - The certificate has expired.\n";
-       }
-       if ($failures & $SVN::Auth::SSL::OTHER) {
-               print STDERR " - The certificate has an unknown error.\n";
-       }
+       {
+               no warnings 'once';
+               # All variables SVN::Auth::SSL::* are used only once,
+               # so we're shutting up Perl warnings about this.
+               if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
+                       print STDERR " - The certificate is not issued ",
+                           "by a trusted authority. Use the\n",
+                           "   fingerprint to validate ",
+                           "the certificate manually!\n";
+               }
+               if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
+                       print STDERR " - The certificate hostname ",
+                           "does not match.\n";
+               }
+               if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
+                       print STDERR " - The certificate is not yet valid.\n";
+               }
+               if ($failures & $SVN::Auth::SSL::EXPIRED) {
+                       print STDERR " - The certificate has expired.\n";
+               }
+               if ($failures & $SVN::Auth::SSL::OTHER) {
+                       print STDERR " - The certificate has ",
+                           "an unknown error.\n";
+               }
+       } # no warnings 'once'
        printf STDERR
                "Certificate information:\n".
                " - Hostname: %s\n".
@@ -1592,74 +4020,125 @@ sub username {
 
 sub _read_password {
        my ($prompt, $realm) = @_;
-       print STDERR $prompt;
-       STDERR->flush;
-       require Term::ReadKey;
-       Term::ReadKey::ReadMode('noecho');
        my $password = '';
-       while (defined(my $key = Term::ReadKey::ReadKey(0))) {
-               last if $key =~ /[\012\015]/; # \n\r
-               $password .= $key;
+       if (exists $ENV{GIT_ASKPASS}) {
+               open(PH, "-|", $ENV{GIT_ASKPASS}, $prompt);
+               $password = <PH>;
+               $password =~ s/[\012\015]//; # \n\r
+               close(PH);
+       } else {
+               print STDERR $prompt;
+               STDERR->flush;
+               require Term::ReadKey;
+               Term::ReadKey::ReadMode('noecho');
+               while (defined(my $key = Term::ReadKey::ReadKey(0))) {
+                       last if $key =~ /[\012\015]/; # \n\r
+                       $password .= $key;
+               }
+               Term::ReadKey::ReadMode('restore');
+               print STDERR "\n";
+               STDERR->flush;
        }
-       Term::ReadKey::ReadMode('restore');
-       print STDERR "\n";
-       STDERR->flush;
        $password;
 }
 
-package main;
-
-sub uri_encode {
-       my ($f) = @_;
-       $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
-       $f
-}
-
-sub uri_decode {
-       my ($f) = @_;
-       $f =~ tr/+/ /;
-       $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
-       $f
-}
-
-{
-       my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
-                               $SVN::Node::dir.$SVN::Node::unknown.
-                               $SVN::Node::none.$SVN::Node::file.
-                               $SVN::Node::dir.$SVN::Node::unknown.
-                               $SVN::Auth::SSL::CNMISMATCH.
-                               $SVN::Auth::SSL::NOTYETVALID.
-                               $SVN::Auth::SSL::EXPIRED.
-                               $SVN::Auth::SSL::UNKNOWNCA.
-                               $SVN::Auth::SSL::OTHER;
-}
-
 package SVN::Git::Fetcher;
 use vars qw/@ISA/;
 use strict;
 use warnings;
 use Carp qw/croak/;
 use IO::File qw//;
+use vars qw/$_ignore_regex/;
 
 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
 sub new {
-       my ($class, $git_svn) = @_;
+       my ($class, $git_svn, $switch_path) = @_;
        my $self = SVN::Delta::Editor->new;
        bless $self, $class;
-       $self->{c} = $git_svn->{last_commit} if exists $git_svn->{last_commit};
+       if (exists $git_svn->{last_commit}) {
+               $self->{c} = $git_svn->{last_commit};
+               $self->{empty_symlinks} =
+                                 _mark_empty_symlinks($git_svn, $switch_path);
+       }
+       $self->{ignore_regex} = eval { command_oneline('config', '--get',
+                            "svn-remote.$git_svn->{repo_id}.ignore-paths") };
        $self->{empty} = {};
        $self->{dir_prop} = {};
        $self->{file_prop} = {};
        $self->{absent_dir} = {};
        $self->{absent_file} = {};
        $self->{gii} = $git_svn->tmp_index_do(sub { Git::IndexInfo->new });
-       require Digest::MD5;
+       $self->{pathnameencoding} = Git::config('svn.pathnameencoding');
        $self;
 }
 
+# this uses the Ra object, so it must be called before do_{switch,update},
+# not inside them (when the Git::SVN::Fetcher object is passed) to
+# do_{switch,update}
+sub _mark_empty_symlinks {
+       my ($git_svn, $switch_path) = @_;
+       my $bool = Git::config_bool('svn.brokenSymlinkWorkaround');
+       return {} if (!defined($bool)) || (defined($bool) && ! $bool);
+
+       my %ret;
+       my ($rev, $cmt) = $git_svn->last_rev_commit;
+       return {} unless ($rev && $cmt);
+
+       # allow the warning to be printed for each revision we fetch to
+       # ensure the user sees it.  The user can also disable the workaround
+       # on the repository even while git svn is running and the next
+       # revision fetched will skip this expensive function.
+       my $printed_warning;
+       chomp(my $empty_blob = `git hash-object -t blob --stdin < /dev/null`);
+       my ($ls, $ctx) = command_output_pipe(qw/ls-tree -r -z/, $cmt);
+       local $/ = "\0";
+       my $pfx = defined($switch_path) ? $switch_path : $git_svn->{path};
+       $pfx .= '/' if length($pfx);
+       while (<$ls>) {
+               chomp;
+               s/\A100644 blob $empty_blob\t//o or next;
+               unless ($printed_warning) {
+                       print STDERR "Scanning for empty symlinks, ",
+                                    "this may take a while if you have ",
+                                    "many empty files\n",
+                                    "You may disable this with `",
+                                    "git config svn.brokenSymlinkWorkaround ",
+                                    "false'.\n",
+                                    "This may be done in a different ",
+                                    "terminal without restarting ",
+                                    "git svn\n";
+                       $printed_warning = 1;
+               }
+               my $path = $_;
+               my (undef, $props) =
+                              $git_svn->ra->get_file($pfx.$path, $rev, undef);
+               if ($props->{'svn:special'}) {
+                       $ret{$path} = 1;
+               }
+       }
+       command_close_pipe($ls, $ctx);
+       \%ret;
+}
+
+# returns true if a given path is inside a ".git" directory
+sub in_dot_git {
+       $_[0] =~ m{(?:^|/)\.git(?:/|$)};
+}
+
+# return value: 0 -- don't ignore, 1 -- ignore
+sub is_path_ignored {
+       my ($self, $path) = @_;
+       return 1 if in_dot_git($path);
+       return 1 if defined($self->{ignore_regex}) &&
+                   $path =~ m!$self->{ignore_regex}!;
+       return 0 unless defined($_ignore_regex);
+       return 1 if $path =~ m!$_ignore_regex!o;
+       return 0;
+}
+
 sub set_path_strip {
        my ($self, $path) = @_;
-       $self->{path_strip} = qr/^\Q$path\E\/?/;
+       $self->{path_strip} = qr/^\Q$path\E(\/|$)/ if length $path;
 }
 
 sub open_root {
@@ -1673,65 +4152,108 @@ sub open_directory {
 
 sub git_path {
        my ($self, $path) = @_;
-       $path =~ s!$self->{path_strip}!! if $self->{path_strip};
+       if (my $enc = $self->{pathnameencoding}) {
+               require Encode;
+               Encode::from_to($path, 'UTF-8', $enc);
+       }
+       if ($self->{path_strip}) {
+               $path =~ s!$self->{path_strip}!! or
+                 die "Failed to strip path '$path' ($self->{path_strip})\n";
+       }
        $path;
 }
 
 sub delete_entry {
        my ($self, $path, $rev, $pb) = @_;
+       return undef if $self->is_path_ignored($path);
 
        my $gpath = $self->git_path($path);
+       return undef if ($gpath eq '');
+
        # remove entire directories.
-       if (command('ls-tree', $self->{c}, '--', $gpath) =~ /^040000 tree/) {
+       my ($tree) = (command('ls-tree', '-z', $self->{c}, "./$gpath")
+                        =~ /\A040000 tree ([a-f\d]{40})\t\Q$gpath\E\0/);
+       if ($tree) {
                my ($ls, $ctx) = command_output_pipe(qw/ls-tree
                                                     -r --name-only -z/,
-                                                    $self->{c}, '--', $gpath);
+                                                    $tree);
                local $/ = "\0";
                while (<$ls>) {
                        chomp;
-                       $self->{gii}->remove($_);
-                       print "\tD\t$_\n" unless $self->{q};
+                       my $rmpath = "$gpath/$_";
+                       $self->{gii}->remove($rmpath);
+                       print "\tD\t$rmpath\n" unless $::_q;
                }
-               print "\tD\t$gpath/\n" unless $self->{q};
+               print "\tD\t$gpath/\n" unless $::_q;
                command_close_pipe($ls, $ctx);
-               $self->{empty}->{$path} = 0
        } else {
                $self->{gii}->remove($gpath);
-               print "\tD\t$gpath\n" unless $self->{q};
+               print "\tD\t$gpath\n" unless $::_q;
        }
+       $self->{empty}->{$path} = 0;
        undef;
 }
 
 sub open_file {
        my ($self, $path, $pb, $rev) = @_;
+       my ($mode, $blob);
+
+       goto out if $self->is_path_ignored($path);
+
        my $gpath = $self->git_path($path);
-       my ($mode, $blob) = (command('ls-tree', $self->{c}, '--', $gpath)
-                            =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
+       ($mode, $blob) = (command('ls-tree', '-z', $self->{c}, "./$gpath")
+                            =~ /\A(\d{6}) blob ([a-f\d]{40})\t\Q$gpath\E\0/);
        unless (defined $mode && defined $blob) {
                die "$path was not found in commit $self->{c} (r$rev)\n";
        }
+       if ($mode eq '100644' && $self->{empty_symlinks}->{$path}) {
+               $mode = '120000';
+       }
+out:
        { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
          pool => SVN::Pool->new, action => 'M' };
 }
 
 sub add_file {
        my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
-       my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
-       delete $self->{empty}->{$dir};
-       { path => $path, mode_a => 100644, mode_b => 100644,
+       my $mode;
+
+       if (!$self->is_path_ignored($path)) {
+               my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
+               delete $self->{empty}->{$dir};
+               $mode = '100644';
+       }
+       { path => $path, mode_a => $mode, mode_b => $mode,
          pool => SVN::Pool->new, action => 'A' };
 }
 
 sub add_directory {
        my ($self, $path, $cp_path, $cp_rev) = @_;
+       goto out if $self->is_path_ignored($path);
+       my $gpath = $self->git_path($path);
+       if ($gpath eq '') {
+               my ($ls, $ctx) = command_output_pipe(qw/ls-tree
+                                                    -r --name-only -z/,
+                                                    $self->{c});
+               local $/ = "\0";
+               while (<$ls>) {
+                       chomp;
+                       $self->{gii}->remove($_);
+                       print "\tD\t$_\n" unless $::_q;
+               }
+               command_close_pipe($ls, $ctx);
+               $self->{empty}->{$path} = 0;
+       }
        my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
        delete $self->{empty}->{$dir};
        $self->{empty}->{$path} = 1;
+out:
        { path => $path };
 }
 
 sub change_dir_prop {
        my ($self, $db, $prop, $value) = @_;
+       return undef if $self->is_path_ignored($db->{path});
        $self->{dir_prop}->{$db->{path}} ||= {};
        $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
        undef;
@@ -1739,6 +4261,7 @@ sub change_dir_prop {
 
 sub absent_directory {
        my ($self, $path, $pb) = @_;
+       return undef if $self->is_path_ignored($path);
        $self->{absent_dir}->{$pb->{path}} ||= [];
        push @{$self->{absent_dir}->{$pb->{path}}}, $path;
        undef;
@@ -1746,6 +4269,7 @@ sub absent_directory {
 
 sub absent_file {
        my ($self, $path, $pb) = @_;
+       return undef if $self->is_path_ignored($path);
        $self->{absent_file}->{$pb->{path}} ||= [];
        push @{$self->{absent_file}->{$pb->{path}}}, $path;
        undef;
@@ -1753,6 +4277,7 @@ sub absent_file {
 
 sub change_file_prop {
        my ($self, $fb, $prop, $value) = @_;
+       return undef if $self->is_path_ignored($fb->{path});
        if ($prop eq 'svn:executable') {
                if ($fb->{mode_b} != 120000) {
                        $fb->{mode_b} = defined $value ? 100755 : 100644;
@@ -1768,72 +4293,111 @@ sub change_file_prop {
 
 sub apply_textdelta {
        my ($self, $fb, $exp) = @_;
-       my $fh = IO::File->new_tmpfile;
-       $fh->autoflush(1);
+       return undef if $self->is_path_ignored($fb->{path});
+       my $fh = $::_repository->temp_acquire('svn_delta');
        # $fh gets auto-closed() by SVN::TxDelta::apply(),
        # (but $base does not,) so dup() it for reading in close_file
        open my $dup, '<&', $fh or croak $!;
-       my $base = IO::File->new_tmpfile;
-       $base->autoflush(1);
+       my $base = $::_repository->temp_acquire('git_blob');
+
        if ($fb->{blob}) {
-               defined (my $pid = fork) or croak $!;
-               if (!$pid) {
-                       open STDOUT, '>&', $base or croak $!;
-                       print STDOUT 'link ' if ($fb->{mode_a} == 120000);
-                       exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
+               my ($base_is_link, $size);
+
+               if ($fb->{mode_a} eq '120000' &&
+                   ! $self->{empty_symlinks}->{$fb->{path}}) {
+                       print $base 'link ' or die "print $!\n";
+                       $base_is_link = 1;
                }
-               waitpid $pid, 0;
-               croak $? if $?;
+       retry:
+               $size = $::_repository->cat_blob($fb->{blob}, $base);
+               die "Failed to read object $fb->{blob}" if ($size < 0);
 
                if (defined $exp) {
                        seek $base, 0, 0 or croak $!;
-                       my $md5 = Digest::MD5->new;
-                       $md5->addfile($base);
-                       my $got = $md5->hexdigest;
-                       die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
-                           "expected: $exp\n",
-                           "     got: $got\n" if ($got ne $exp);
+                       my $got = ::md5sum($base);
+                       if ($got ne $exp) {
+                               my $err = "Checksum mismatch: ".
+                                      "$fb->{path} $fb->{blob}\n" .
+                                      "expected: $exp\n" .
+                                      "     got: $got\n";
+                               if ($base_is_link) {
+                                       warn $err,
+                                            "Retrying... (possibly ",
+                                            "a bad symlink from SVN)\n";
+                                       $::_repository->temp_reset($base);
+                                       $base_is_link = 0;
+                                       goto retry;
+                               }
+                               die $err;
+                       }
                }
        }
        seek $base, 0, 0 or croak $!;
-       $fb->{fh} = $dup;
+       $fb->{fh} = $fh;
        $fb->{base} = $base;
-       [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
+       [ SVN::TxDelta::apply($base, $dup, undef, $fb->{path}, $fb->{pool}) ];
 }
 
 sub close_file {
        my ($self, $fb, $exp) = @_;
+       return undef if $self->is_path_ignored($fb->{path});
+
        my $hash;
        my $path = $self->git_path($fb->{path});
        if (my $fh = $fb->{fh}) {
-               seek($fh, 0, 0) or croak $!;
-               my $md5 = Digest::MD5->new;
-               $md5->addfile($fh);
-               my $got = $md5->hexdigest;
-               die "Checksum mismatch: $path\n",
-                   "expected: $exp\n    got: $got\n" if ($got ne $exp);
-               seek($fh, 0, 0) or croak $!;
+               if (defined $exp) {
+                       seek($fh, 0, 0) or croak $!;
+                       my $got = ::md5sum($fh);
+                       if ($got ne $exp) {
+                               die "Checksum mismatch: $path\n",
+                                   "expected: $exp\n    got: $got\n";
+                       }
+               }
                if ($fb->{mode_b} == 120000) {
-                       read($fh, my $buf, 5) == 5 or croak $!;
-                       $buf eq 'link ' or die "$path has mode 120000",
-                                              "but is not a link\n";
-               }
-               defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
-               if (!$pid) {
-                       open STDIN, '<&', $fh or croak $!;
-                       exec qw/git-hash-object -w --stdin/ or croak $!;
-               }
-               chomp($hash = do { local $/; <$out> });
-               close $out or croak $!;
-               close $fh or croak $!;
+                       sysseek($fh, 0, 0) or croak $!;
+                       my $rd = sysread($fh, my $buf, 5);
+
+                       if (!defined $rd) {
+                               croak "sysread: $!\n";
+                       } elsif ($rd == 0) {
+                               warn "$path has mode 120000",
+                                    " but it points to nothing\n",
+                                    "converting to an empty file with mode",
+                                    " 100644\n";
+                               $fb->{mode_b} = '100644';
+                       } elsif ($buf ne 'link ') {
+                               warn "$path has mode 120000",
+                                    " but is not a link\n";
+                       } else {
+                               my $tmp_fh = $::_repository->temp_acquire(
+                                       'svn_hash');
+                               my $res;
+                               while ($res = sysread($fh, my $str, 1024)) {
+                                       my $out = syswrite($tmp_fh, $str, $res);
+                                       defined($out) && $out == $res
+                                               or croak("write ",
+                                                       Git::temp_path($tmp_fh),
+                                                       ": $!\n");
+                               }
+                               defined $res or croak $!;
+
+                               ($fh, $tmp_fh) = ($tmp_fh, $fh);
+                               Git::temp_release($tmp_fh, 1);
+                       }
+               }
+
+               $hash = $::_repository->hash_and_insert_object(
+                               Git::temp_path($fh));
                $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
-               close $fb->{base} or croak $!;
+
+               Git::temp_release($fb->{base}, 1);
+               Git::temp_release($fh, 1);
        } else {
                $hash = $fb->{blob} or die "no blob information\n";
        }
        $fb->{pool}->clear;
        $self->{gii}->update($fb->{mode_b}, $hash, $path) or croak $!;
-       print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
+       print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $::_q;
        undef;
 }
 
@@ -1853,7 +4417,7 @@ sub close_edit {
 }
 
 package SVN::Git::Editor;
-use vars qw/@ISA/;
+use vars qw/@ISA $_rmdir $_cp_similarity $_find_copies_harder $_rename_limit/;
 use strict;
 use warnings;
 use Carp qw/croak/;
@@ -1886,20 +4450,20 @@ sub new {
        $self->{rm} = { };
        $self->{path_prefix} = length $self->{svn_path} ?
                               "$self->{svn_path}/" : '';
-       require Digest::MD5;
+       $self->{config} = $opts->{config};
        return $self;
 }
 
 sub generate_diff {
        my ($tree_a, $tree_b) = @_;
        my @diff_tree = qw(diff-tree -z -r);
-       if ($::_cp_similarity) {
-               push @diff_tree, "-C$::_cp_similarity";
+       if ($_cp_similarity) {
+               push @diff_tree, "-C$_cp_similarity";
        } else {
                push @diff_tree, '-C';
        }
-       push @diff_tree, '--find-copies-harder' if $::_find_copies_harder;
-       push @diff_tree, "-l$::_l" if defined $::_l;
+       push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
+       push @diff_tree, "-l$_rename_limit" if defined $_rename_limit;
        push @diff_tree, $tree_a, $tree_b;
        my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
        local $/ = "\0";
@@ -1908,11 +4472,12 @@ sub generate_diff {
        while (<$diff_fh>) {
                chomp $_; # this gets rid of the trailing "\0"
                if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
-                                       $::sha1\s($::sha1)\s
+                                       ($::sha1)\s($::sha1)\s
                                        ([MTCRAD])\d*$/xo) {
                        push @mods, {   mode_a => $1, mode_b => $2,
-                                       sha1_b => $3, chg => $4 };
-                       if ($4 =~ /^(?:C|R)$/) {
+                                       sha1_a => $3, sha1_b => $4,
+                                       chg => $5 };
+                       if ($5 =~ /^(?:C|R)$/) {
                                $state = 'file_a';
                        } else {
                                $state = 'file_b';
@@ -1979,11 +4544,18 @@ sub split_path {
 
 sub repo_path {
        my ($self, $path) = @_;
+       if (my $enc = $self->{pathnameencoding}) {
+               require Encode;
+               Encode::from_to($path, $enc, 'UTF-8');
+       }
        $self->{path_prefix}.(defined $path ? $path : '');
 }
 
 sub url_path {
        my ($self, $path) = @_;
+       if ($self->{url} =~ m#^https?://#) {
+               $path =~ s!([^~a-zA-Z0-9_./-])!uc sprintf("%%%02x",ord($1))!eg;
+       }
        $self->{url} . '/' . $self->repo_path($path);
 }
 
@@ -2038,16 +4610,21 @@ sub open_or_add_dir {
        if (!defined $t) {
                die "$full_path not known in r$self->{r} or we have a bug!\n";
        }
-       if ($t == $SVN::Node::none) {
-               return $self->add_directory($full_path, $baton,
-                                               undef, -1, $self->{pool});
-       } elsif ($t == $SVN::Node::dir) {
-               return $self->open_directory($full_path, $baton,
-                                               $self->{r}, $self->{pool});
-       }
-       print STDERR "$full_path already exists in repository at ",
-               "r$self->{r} and it is not a directory (",
-               ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
+       {
+               no warnings 'once';
+               # SVN::Node::none and SVN::Node::file are used only once,
+               # so we're shutting up Perl's warnings about them.
+               if ($t == $SVN::Node::none) {
+                       return $self->add_directory($full_path, $baton,
+                           undef, -1, $self->{pool});
+               } elsif ($t == $SVN::Node::dir) {
+                       return $self->open_directory($full_path, $baton,
+                           $self->{r}, $self->{pool});
+               } # no warnings 'once'
+               print STDERR "$full_path already exists in repository at ",
+                   "r$self->{r} and it is not a directory (",
+                   ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
+       } # no warnings 'once'
        exit 1;
 }
 
@@ -2067,6 +4644,57 @@ sub ensure_path {
        return $bat->{$c};
 }
 
+# Subroutine to convert a globbing pattern to a regular expression.
+# From perl cookbook.
+sub glob2pat {
+       my $globstr = shift;
+       my %patmap = ('*' => '.*', '?' => '.', '[' => '[', ']' => ']');
+       $globstr =~ s{(.)} { $patmap{$1} || "\Q$1" }ge;
+       return '^' . $globstr . '$';
+}
+
+sub check_autoprop {
+       my ($self, $pattern, $properties, $file, $fbat) = @_;
+       # Convert the globbing pattern to a regular expression.
+       my $regex = glob2pat($pattern);
+       # Check if the pattern matches the file name.
+       if($file =~ m/($regex)/) {
+               # Parse the list of properties to set.
+               my @props = split(/;/, $properties);
+               foreach my $prop (@props) {
+                       # Parse 'name=value' syntax and set the property.
+                       if ($prop =~ /([^=]+)=(.*)/) {
+                               my ($n,$v) = ($1,$2);
+                               for ($n, $v) {
+                                       s/^\s+//; s/\s+$//;
+                               }
+                               $self->change_file_prop($fbat, $n, $v);
+                       }
+               }
+       }
+}
+
+sub apply_autoprops {
+       my ($self, $file, $fbat) = @_;
+       my $conf_t = ${$self->{config}}{'config'};
+       no warnings 'once';
+       # Check [miscellany]/enable-auto-props in svn configuration.
+       if (SVN::_Core::svn_config_get_bool(
+               $conf_t,
+               $SVN::_Core::SVN_CONFIG_SECTION_MISCELLANY,
+               $SVN::_Core::SVN_CONFIG_OPTION_ENABLE_AUTO_PROPS,
+               0)) {
+               # Auto-props are enabled.  Enumerate them to look for matches.
+               my $callback = sub {
+                       $self->check_autoprop($_[0], $_[1], $file, $fbat);
+               };
+               SVN::_Core::svn_config_enumerate(
+                       $conf_t,
+                       $SVN::_Core::SVN_CONFIG_SECTION_AUTO_PROPS,
+                       $callback);
+       }
+}
+
 sub A {
        my ($self, $m) = @_;
        my ($dir, $file) = split_path($m->{file_b});
@@ -2074,6 +4702,7 @@ sub A {
        my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
                                        undef, -1);
        print "\tA\t$m->{file_b}\n" unless $::_q;
+       $self->apply_autoprops($file, $fbat);
        $self->chg_file($fbat, $m);
        $self->close_file($fbat,undef,$self->{pool});
 }
@@ -2104,6 +4733,7 @@ sub R {
        my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
                                $self->url_path($m->{file_a}), $self->{r});
        print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
+       $self->apply_autoprops($file, $fbat);
        $self->chg_file($fbat, $m);
        $self->close_file($fbat,undef,$self->{pool});
 
@@ -2130,42 +4760,53 @@ sub change_file_prop {
        $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
 }
 
-sub chg_file {
-       my ($self, $fbat, $m) = @_;
-       if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
-               $self->change_file_prop($fbat,'svn:executable','*');
-       } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
-               $self->change_file_prop($fbat,'svn:executable',undef);
-       }
-       my $fh = IO::File->new_tmpfile or croak $!;
-       if ($m->{mode_b} =~ /^120/) {
+sub _chg_file_get_blob ($$$$) {
+       my ($self, $fbat, $m, $which) = @_;
+       my $fh = $::_repository->temp_acquire("git_blob_$which");
+       if ($m->{"mode_$which"} =~ /^120/) {
                print $fh 'link ' or croak $!;
                $self->change_file_prop($fbat,'svn:special','*');
-       } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
+       } elsif ($m->{mode_a} =~ /^120/ && $m->{"mode_$which"} !~ /^120/) {
                $self->change_file_prop($fbat,'svn:special',undef);
        }
-       defined(my $pid = fork) or croak $!;
-       if (!$pid) {
-               open STDOUT, '>&', $fh or croak $!;
-               exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
-       }
-       waitpid $pid, 0;
-       croak $? if $?;
+       my $blob = $m->{"sha1_$which"};
+       return ($fh,) if ($blob =~ /^0{40}$/);
+       my $size = $::_repository->cat_blob($blob, $fh);
+       croak "Failed to read object $blob" if ($size < 0);
        $fh->flush == 0 or croak $!;
        seek $fh, 0, 0 or croak $!;
 
-       my $md5 = Digest::MD5->new;
-       $md5->addfile($fh) or croak $!;
+       my $exp = ::md5sum($fh);
        seek $fh, 0, 0 or croak $!;
+       return ($fh, $exp);
+}
 
-       my $exp = $md5->hexdigest;
+sub chg_file {
+       my ($self, $fbat, $m) = @_;
+       if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
+               $self->change_file_prop($fbat,'svn:executable','*');
+       } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
+               $self->change_file_prop($fbat,'svn:executable',undef);
+       }
+       my ($fh_a, $exp_a) = _chg_file_get_blob $self, $fbat, $m, 'a';
+       my ($fh_b, $exp_b) = _chg_file_get_blob $self, $fbat, $m, 'b';
        my $pool = SVN::Pool->new;
-       my $atd = $self->apply_textdelta($fbat, undef, $pool);
-       my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
-       die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
+       my $atd = $self->apply_textdelta($fbat, $exp_a, $pool);
+       if (-s $fh_a) {
+               my $txstream = SVN::TxDelta::new ($fh_a, $fh_b, $pool);
+               my $res = SVN::TxDelta::send_txstream($txstream, @$atd, $pool);
+               if (defined $res) {
+                       die "Unexpected result from send_txstream: $res\n",
+                           "(SVN::Core::VERSION: $SVN::Core::VERSION)\n";
+               }
+       } else {
+               my $got = SVN::TxDelta::send_stream($fh_b, @$atd, $pool);
+               die "Checksum mismatch\nexpected: $exp_b\ngot: $got\n"
+                   if ($got ne $exp_b);
+       }
+       Git::temp_release($fh_b, 1);
+       Git::temp_release($fh_a, 1);
        $pool->clear;
-
-       close $fh or croak $!;
 }
 
 sub D {
@@ -2180,8 +4821,10 @@ sub close_edit {
        my ($self) = @_;
        my ($p,$bat) = ($self->{pool}, $self->{bat});
        foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
+               next if $_ eq '';
                $self->close_directory($bat->{$_}, $p);
        }
+       $self->close_directory($bat->{''}, $p);
        $self->SUPER::close_edit($p);
        $p->clear;
 }
@@ -2207,10 +4850,10 @@ sub apply_diff {
                if (defined $o{$f}) {
                        $self->$f($m);
                } else {
-                       fatal("Invalid change type: $f\n");
+                       fatal("Invalid change type: $f");
                }
        }
-       $self->rmdirs if $::_rmdir;
+       $self->rmdirs if $_rmdir;
        if (@$mods == 0) {
                $self->abort_edit;
        } else {
@@ -2220,110 +4863,518 @@ sub apply_diff {
 }
 
 package Git::SVN::Ra;
-use vars qw/@ISA $config_dir/;
+use vars qw/@ISA $config_dir $_log_window_size/;
 use strict;
 use warnings;
-my ($can_do_switch);
-my %RA;
+my ($ra_invalid, $can_do_switch, %ignored_err, $RA);
 
 BEGIN {
        # enforce temporary pool usage for some simple functions
-       my $e;
-       foreach (qw/get_latest_revnum rev_proplist get_file
-                   check_path get_dir get_uuid get_repos_root/) {
-               $e .= "sub $_ {
-                       my \$self = shift;
-                       my \$pool = SVN::Pool->new;
-                       my \@ret = \$self->SUPER::$_(\@_,\$pool);
-                       \$pool->clear;
-                       wantarray ? \@ret : \$ret[0]; }\n";
+       no strict 'refs';
+       for my $f (qw/rev_proplist get_latest_revnum get_uuid get_repos_root
+                     get_file/) {
+               my $SUPER = "SUPER::$f";
+               *$f = sub {
+                       my $self = shift;
+                       my $pool = SVN::Pool->new;
+                       my @ret = $self->$SUPER(@_,$pool);
+                       $pool->clear;
+                       wantarray ? @ret : $ret[0];
+               };
+       }
+}
+
+sub _auth_providers () {
+       [
+         SVN::Client::get_simple_provider(),
+         SVN::Client::get_ssl_server_trust_file_provider(),
+         SVN::Client::get_simple_prompt_provider(
+           \&Git::SVN::Prompt::simple, 2),
+         SVN::Client::get_ssl_client_cert_file_provider(),
+         SVN::Client::get_ssl_client_cert_prompt_provider(
+           \&Git::SVN::Prompt::ssl_client_cert, 2),
+         SVN::Client::get_ssl_client_cert_pw_file_provider(),
+         SVN::Client::get_ssl_client_cert_pw_prompt_provider(
+           \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
+         SVN::Client::get_username_provider(),
+         SVN::Client::get_ssl_server_trust_prompt_provider(
+           \&Git::SVN::Prompt::ssl_server_trust),
+         SVN::Client::get_username_prompt_provider(
+           \&Git::SVN::Prompt::username, 2)
+       ]
+}
+
+sub escape_uri_only {
+       my ($uri) = @_;
+       my @tmp;
+       foreach (split m{/}, $uri) {
+               s/([^~\w.%+-]|%(?![a-fA-F0-9]{2}))/sprintf("%%%02X",ord($1))/eg;
+               push @tmp, $_;
+       }
+       join('/', @tmp);
+}
+
+sub escape_url {
+       my ($url) = @_;
+       if ($url =~ m#^(https?)://([^/]+)(.*)$#) {
+               my ($scheme, $domain, $uri) = ($1, $2, escape_uri_only($3));
+               $url = "$scheme://$domain$uri";
        }
-       eval $e;
+       $url;
 }
 
 sub new {
        my ($class, $url) = @_;
        $url =~ s!/+$!!;
-       return $RA{$url} if $RA{$url};
+       return $RA if ($RA && $RA->{url} eq $url);
+
+       ::_req_svn();
 
        SVN::_Core::svn_config_ensure($config_dir, undef);
-       my ($baton, $callbacks) = SVN::Core::auth_open_helper([
-           SVN::Client::get_simple_provider(),
-           SVN::Client::get_ssl_server_trust_file_provider(),
-           SVN::Client::get_simple_prompt_provider(
-             \&Git::SVN::Prompt::simple, 2),
-           SVN::Client::get_ssl_client_cert_prompt_provider(
-             \&Git::SVN::Prompt::ssl_client_cert, 2),
-           SVN::Client::get_ssl_client_cert_pw_prompt_provider(
-             \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
-           SVN::Client::get_username_provider(),
-           SVN::Client::get_ssl_server_trust_prompt_provider(
-             \&Git::SVN::Prompt::ssl_server_trust),
-           SVN::Client::get_username_prompt_provider(
-             \&Git::SVN::Prompt::username, 2),
-         ]);
+       my ($baton, $callbacks) = SVN::Core::auth_open_helper(_auth_providers);
        my $config = SVN::Core::config_get_config($config_dir);
-       my $self = SVN::Ra->new(url => $url, auth => $baton,
+       $RA = undef;
+       my $dont_store_passwords = 1;
+       my $conf_t = ${$config}{'config'};
+       {
+               no warnings 'once';
+               # The usage of $SVN::_Core::SVN_CONFIG_* variables
+               # produces warnings that variables are used only once.
+               # I had not found the better way to shut them up, so
+               # the warnings of type 'once' are disabled in this block.
+               if (SVN::_Core::svn_config_get_bool($conf_t,
+                   $SVN::_Core::SVN_CONFIG_SECTION_AUTH,
+                   $SVN::_Core::SVN_CONFIG_OPTION_STORE_PASSWORDS,
+                   1) == 0) {
+                       SVN::_Core::svn_auth_set_parameter($baton,
+                           $SVN::_Core::SVN_AUTH_PARAM_DONT_STORE_PASSWORDS,
+                           bless (\$dont_store_passwords, "_p_void"));
+               }
+               if (SVN::_Core::svn_config_get_bool($conf_t,
+                   $SVN::_Core::SVN_CONFIG_SECTION_AUTH,
+                   $SVN::_Core::SVN_CONFIG_OPTION_STORE_AUTH_CREDS,
+                   1) == 0) {
+                       $Git::SVN::Prompt::_no_auth_cache = 1;
+               }
+       } # no warnings 'once'
+       my $self = SVN::Ra->new(url => escape_url($url), auth => $baton,
                              config => $config,
                              pool => SVN::Pool->new,
                              auth_provider_callbacks => $callbacks);
+       $self->{url} = $url;
        $self->{svn_path} = $url;
        $self->{repos_root} = $self->get_repos_root;
-       $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
-       $RA{$url} = bless $self, $class;
+       $self->{svn_path} =~ s#^\Q$self->{repos_root}\E(/|$)##;
+       $self->{cache} = { check_path => { r => 0, data => {} },
+                          get_dir => { r => 0, data => {} } };
+       $RA = bless $self, $class;
+}
+
+sub check_path {
+       my ($self, $path, $r) = @_;
+       my $cache = $self->{cache}->{check_path};
+       if ($r == $cache->{r} && exists $cache->{data}->{$path}) {
+               return $cache->{data}->{$path};
+       }
+       my $pool = SVN::Pool->new;
+       my $t = $self->SUPER::check_path($path, $r, $pool);
+       $pool->clear;
+       if ($r != $cache->{r}) {
+               %{$cache->{data}} = ();
+               $cache->{r} = $r;
+       }
+       $cache->{data}->{$path} = $t;
+}
+
+sub get_dir {
+       my ($self, $dir, $r) = @_;
+       my $cache = $self->{cache}->{get_dir};
+       if ($r == $cache->{r}) {
+               if (my $x = $cache->{data}->{$dir}) {
+                       return wantarray ? @$x : $x->[0];
+               }
+       }
+       my $pool = SVN::Pool->new;
+       my ($d, undef, $props) = $self->SUPER::get_dir($dir, $r, $pool);
+       my %dirents = map { $_ => { kind => $d->{$_}->kind } } keys %$d;
+       $pool->clear;
+       if ($r != $cache->{r}) {
+               %{$cache->{data}} = ();
+               $cache->{r} = $r;
+       }
+       $cache->{data}->{$dir} = [ \%dirents, $r, $props ];
+       wantarray ? (\%dirents, $r, $props) : \%dirents;
 }
 
 sub DESTROY {
-       # do not call the real DESTROY since we store ourselves in %RA
+       # do not call the real DESTROY since we store ourselves in $RA
 }
 
+# get_log(paths, start, end, limit,
+#         discover_changed_paths, strict_node_history, receiver)
 sub get_log {
        my ($self, @args) = @_;
        my $pool = SVN::Pool->new;
-       splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
+
+       # svn_log_changed_path_t objects passed to get_log are likely to be
+       # overwritten even if only the refs are copied to an external variable,
+       # so we should dup the structures in their entirety.  Using an
+       # externally passed pool (instead of our temporary and quickly cleared
+       # pool in Git::SVN::Ra) does not help matters at all...
+       my $receiver = pop @args;
+       my $prefix = "/".$self->{svn_path};
+       $prefix =~ s#/+($)##;
+       my $prefix_regex = qr#^\Q$prefix\E#;
+       push(@args, sub {
+               my ($paths) = $_[0];
+               return &$receiver(@_) unless $paths;
+               $_[0] = ();
+               foreach my $p (keys %$paths) {
+                       my $i = $paths->{$p};
+                       # Make path relative to our url, not repos_root
+                       $p =~ s/$prefix_regex//;
+                       my %s = map { $_ => $i->$_; }
+                               qw/copyfrom_path copyfrom_rev action/;
+                       if ($s{'copyfrom_path'}) {
+                               $s{'copyfrom_path'} =~ s/$prefix_regex//;
+                       }
+                       $_[0]{$p} = \%s;
+               }
+               &$receiver(@_);
+       });
+
+
+       # the limit parameter was not supported in SVN 1.1.x, so we
+       # drop it.  Therefore, the receiver callback passed to it
+       # is made aware of this limitation by being wrapped if
+       # the limit passed to is being wrapped.
+       if ($SVN::Core::VERSION le '1.2.0') {
+               my $limit = splice(@args, 3, 1);
+               if ($limit > 0) {
+                       my $receiver = pop @args;
+                       push(@args, sub { &$receiver(@_) if (--$limit >= 0) });
+               }
+       }
        my $ret = $self->SUPER::get_log(@args, $pool);
        $pool->clear;
        $ret;
 }
 
+sub trees_match {
+       my ($self, $url1, $rev1, $url2, $rev2) = @_;
+       my $ctx = SVN::Client->new(auth => _auth_providers);
+       my $out = IO::File->new_tmpfile;
+
+       # older SVN (1.1.x) doesn't take $pool as the last parameter for
+       # $ctx->diff(), so we'll create a default one
+       my $pool = SVN::Pool->new_default_sub;
+
+       $ra_invalid = 1; # this will open a new SVN::Ra connection to $url1
+       $ctx->diff([], $url1, $rev1, $url2, $rev2, 1, 1, 0, $out, $out);
+       $out->flush;
+       my $ret = (($out->stat)[7] == 0);
+       close $out or croak $!;
+
+       $ret;
+}
+
 sub get_commit_editor {
        my ($self, $log, $cb, $pool) = @_;
        my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
        $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
 }
 
-sub uuid {
-       my ($self) = @_;
-       $self->{uuid} ||= $self->get_uuid;
-}
-
 sub gs_do_update {
-       my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
+       my ($self, $rev_a, $rev_b, $gs, $editor) = @_;
+       my $new = ($rev_a == $rev_b);
+       my $path = $gs->{path};
+
+       if ($new && -e $gs->{index}) {
+               unlink $gs->{index} or die
+                 "Couldn't unlink index: $gs->{index}: $!\n";
+       }
        my $pool = SVN::Pool->new;
        $editor->set_path_strip($path);
-       my $reporter = $self->do_update($rev_b, $path, $recurse,
-                                       $editor, $pool);
+       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 $new = ($rev_a == $rev_b);
-       $reporter->set_path('', $rev_a, $new, @lock, $pool);
+
+       # 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
+       # we only want a partial path.
+       my $sp = '';
+       my $final = join('/', @pc);
+       while (@pc) {
+               $reporter->set_path($sp, $rev_b, 0, @lock, $pool);
+               $sp .= '/' if length $sp;
+               $sp .= shift @pc;
+       }
+       die "BUG: '$sp' != '$final'\n" if ($sp ne $final);
+
+       $reporter->set_path($sp, $rev_a, $new, @lock, $pool);
+
        $reporter->finish_report($pool);
        $pool->clear;
        $editor->{git_commit_ok};
 }
 
+# this requires SVN 1.4.3 or later (do_switch didn't work before 1.4.3, and
+# svn_ra_reparent didn't work before 1.4)
 sub gs_do_switch {
-       my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
+       my ($self, $rev_a, $rev_b, $gs, $url_b, $editor) = @_;
+       my $path = $gs->{path};
        my $pool = SVN::Pool->new;
-       $editor->set_path_strip($path);
-       my $reporter = $self->do_switch($rev_b, $path, $recurse,
-                                       $url_b, $editor, $pool);
+
+       my $full_url = $self->{url};
+       my $old_url = $full_url;
+       $full_url .= '/' . $path if length $path;
+       my ($ra, $reparented);
+
+       if ($old_url =~ m#^svn(\+ssh)?://# ||
+           ($full_url =~ m#^https?://# &&
+            escape_url($full_url) ne $full_url)) {
+               $_[0] = undef;
+               $self = undef;
+               $RA = undef;
+               $ra = Git::SVN::Ra->new($full_url);
+               $ra_invalid = 1;
+       } elsif ($old_url ne $full_url) {
+               SVN::_Ra::svn_ra_reparent($self->{session}, $full_url, $pool);
+               $self->{url} = $full_url;
+               $reparented = 1;
+       }
+
+       $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) : ();
        $reporter->set_path('', $rev_a, 0, @lock, $pool);
        $reporter->finish_report($pool);
+
+       if ($reparented) {
+               SVN::_Ra::svn_ra_reparent($self->{session}, $old_url, $pool);
+               $self->{url} = $old_url;
+       }
+
        $pool->clear;
        $editor->{git_commit_ok};
 }
 
+sub longest_common_path {
+       my ($gsv, $globs) = @_;
+       my %common;
+       my $common_max = scalar @$gsv;
+
+       foreach my $gs (@$gsv) {
+               my @tmp = split m#/#, $gs->{path};
+               my $p = '';
+               foreach (@tmp) {
+                       $p .= length($p) ? "/$_" : $_;
+                       $common{$p} ||= 0;
+                       $common{$p}++;
+               }
+       }
+       $globs ||= [];
+       $common_max += scalar @$globs;
+       foreach my $glob (@$globs) {
+               my @tmp = split m#/#, $glob->{path}->{left};
+               my $p = '';
+               foreach (@tmp) {
+                       $p .= length($p) ? "/$_" : $_;
+                       $common{$p} ||= 0;
+                       $common{$p}++;
+               }
+       }
+
+       my $longest_path = '';
+       foreach (sort {length $b <=> length $a} keys %common) {
+               if ($common{$_} == $common_max) {
+                       $longest_path = $_;
+                       last;
+               }
+       }
+       $longest_path;
+}
+
+sub gs_fetch_loop_common {
+       my ($self, $base, $head, $gsv, $globs) = @_;
+       return if ($base > $head);
+       my $inc = $_log_window_size;
+       my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
+       my $longest_path = longest_common_path($gsv, $globs);
+       my $ra_url = $self->{url};
+       my $find_trailing_edge;
+       while (1) {
+               my %revs;
+               my $err;
+               my $err_handler = $SVN::Error::handler;
+               $SVN::Error::handler = sub {
+                       ($err) = @_;
+                       skip_unknown_revs($err);
+               };
+               sub _cb {
+                       my ($paths, $r, $author, $date, $log) = @_;
+                       [ $paths,
+                         { author => $author, date => $date, log => $log } ];
+               }
+               $self->get_log([$longest_path], $min, $max, 0, 1, 1,
+                              sub { $revs{$_[1]} = _cb(@_) });
+               if ($err) {
+                       print "Checked through r$max\r";
+               } else {
+                       $find_trailing_edge = 1;
+               }
+               if ($err and $find_trailing_edge) {
+                       print STDERR "Path '$longest_path' ",
+                                    "was probably deleted:\n",
+                                    $err->expanded_message,
+                                    "\nWill attempt to follow ",
+                                    "revisions r$min .. r$max ",
+                                    "committed before the deletion\n";
+                       my $hi = $max;
+                       while (--$hi >= $min) {
+                               my $ok;
+                               $self->get_log([$longest_path], $min, $hi,
+                                              0, 1, 1, sub {
+                                              $ok = $_[1];
+                                              $revs{$_[1]} = _cb(@_) });
+                               if ($ok) {
+                                       print STDERR "r$min .. r$ok OK\n";
+                                       last;
+                               }
+                       }
+                       $find_trailing_edge = 0;
+               }
+               $SVN::Error::handler = $err_handler;
+
+               my %exists = map { $_->{path} => $_ } @$gsv;
+               foreach my $r (sort {$a <=> $b} keys %revs) {
+                       my ($paths, $logged) = @{$revs{$r}};
+
+                       foreach my $gs ($self->match_globs(\%exists, $paths,
+                                                          $globs, $r)) {
+                               if ($gs->rev_map_max >= $r) {
+                                       next;
+                               }
+                               next unless $gs->match_paths($paths, $r);
+                               $gs->{logged_rev_props} = $logged;
+                               if (my $last_commit = $gs->last_commit) {
+                                       $gs->assert_index_clean($last_commit);
+                               }
+                               my $log_entry = $gs->do_fetch($paths, $r);
+                               if ($log_entry) {
+                                       $gs->do_git_commit($log_entry);
+                               }
+                               $INDEX_FILES{$gs->{index}} = 1;
+                       }
+                       foreach my $g (@$globs) {
+                               my $k = "svn-remote.$g->{remote}." .
+                                       "$g->{t}-maxRev";
+                               Git::SVN::tmp_config($k, $r);
+                       }
+                       if ($ra_invalid) {
+                               $_[0] = undef;
+                               $self = undef;
+                               $RA = undef;
+                               $self = Git::SVN::Ra->new($ra_url);
+                               $ra_invalid = undef;
+                       }
+               }
+               # pre-fill the .rev_db since it'll eventually get filled in
+               # with '0' x40 if something new gets committed
+               foreach my $gs (@$gsv) {
+                       next if $gs->rev_map_max >= $max;
+                       next if defined $gs->rev_map_get($max);
+                       $gs->rev_map_set($max, 0 x40);
+               }
+               foreach my $g (@$globs) {
+                       my $k = "svn-remote.$g->{remote}.$g->{t}-maxRev";
+                       Git::SVN::tmp_config($k, $max);
+               }
+               last if $max >= $head;
+               $min = $max + 1;
+               $max += $inc;
+               $max = $head if ($max > $head);
+       }
+       Git::SVN::gc();
+}
+
+sub get_dir_globbed {
+       my ($self, $left, $depth, $r) = @_;
+
+       my @x = eval { $self->get_dir($left, $r) };
+       return unless scalar @x == 3;
+       my $dirents = $x[0];
+       my @finalents;
+       foreach my $de (keys %$dirents) {
+               next if $dirents->{$de}->{kind} != $SVN::Node::dir;
+               if ($depth > 1) {
+                       my @args = ("$left/$de", $depth - 1, $r);
+                       foreach my $dir ($self->get_dir_globbed(@args)) {
+                               push @finalents, "$de/$dir";
+                       }
+               } else {
+                       push @finalents, $de;
+               }
+       }
+       @finalents;
+}
+
+sub match_globs {
+       my ($self, $exists, $paths, $globs, $r) = @_;
+
+       sub get_dir_check {
+               my ($self, $exists, $g, $r) = @_;
+
+               my @dirs = $self->get_dir_globbed($g->{path}->{left},
+                                                 $g->{path}->{depth},
+                                                 $r);
+
+               foreach my $de (@dirs) {
+                       my $p = $g->{path}->full_path($de);
+                       next if $exists->{$p};
+                       next if (length $g->{path}->{right} &&
+                                ($self->check_path($p, $r) !=
+                                 $SVN::Node::dir));
+                       next unless $p =~ /$g->{path}->{regex}/;
+                       $exists->{$p} = Git::SVN->init($self->{url}, $p, undef,
+                                        $g->{ref}->full_path($de), 1);
+               }
+       }
+       foreach my $g (@$globs) {
+               if (my $path = $paths->{"/$g->{path}->{left}"}) {
+                       if ($path->{action} =~ /^[AR]$/) {
+                               get_dir_check($self, $exists, $g, $r);
+                       }
+               }
+               foreach (keys %$paths) {
+                       if (/$g->{path}->{left_regex}/ &&
+                           !/$g->{path}->{regex}/) {
+                               next if $paths->{$_}->{action} !~ /^[AR]$/;
+                               get_dir_check($self, $exists, $g, $r);
+                       }
+                       next unless /$g->{path}->{regex}/;
+                       my $p = $1;
+                       my $pathname = $g->{path}->full_path($p);
+                       next if $exists->{$pathname};
+                       next if ($self->check_path($pathname, $r) !=
+                                $SVN::Node::dir);
+                       $exists->{$pathname} = Git::SVN->init(
+                                             $self->{url}, $pathname, undef,
+                                             $g->{ref}->full_path($p), 1);
+               }
+               my $c = '';
+               foreach (split m#/#, $g->{path}->{left}) {
+                       $c .= "/$_";
+                       next unless ($paths->{$c} &&
+                                    ($paths->{$c}->{action} =~ /^[AR]$/));
+                       get_dir_check($self, $exists, $g, $r);
+               }
+       }
+       values %$exists;
+}
+
 sub minimize_url {
        my ($self) = @_;
        return $self->{url} if ($self->{url} eq $self->{repos_root});
@@ -2332,7 +5383,11 @@ sub minimize_url {
        my $c = '';
        do {
                $url .= "/$c" if length $c;
-               eval { (ref $self)->new($url)->get_latest_revnum };
+               eval {
+                       my $ra = (ref $self)->new($url);
+                       my $latest = $ra->get_latest_revnum;
+                       $ra->get_log("", $latest, 0, 1, 0, 1, sub {});
+               };
        } while ($@ && ($c = shift @components));
        $url;
 }
@@ -2356,10 +5411,44 @@ sub can_do_switch {
        $can_do_switch;
 }
 
+sub skip_unknown_revs {
+       my ($err) = @_;
+       my $errno = $err->apr_err();
+       # Maybe the branch we're tracking didn't
+       # exist when the repo started, so it's
+       # not an error if it doesn't, just continue
+       #
+       # Wonderfully consistent library, eh?
+       # 160013 - svn:// and file://
+       # 175002 - http(s)://
+       # 175007 - http(s):// (this repo required authorization, too...)
+       #   More codes may be discovered later...
+       if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
+               my $err_key = $err->expanded_message;
+               # revision numbers change every time, filter them out
+               $err_key =~ s/\d+/\0/g;
+               $err_key = "$errno\0$err_key";
+               unless ($ignored_err{$err_key}) {
+                       warn "W: Ignoring error from SVN, path probably ",
+                            "does not exist: ($errno): ",
+                            $err->expanded_message,"\n";
+                       warn "W: Do not be alarmed at the above message ",
+                            "git-svn is just searching aggressively for ",
+                            "old history.\n",
+                            "This may take a while on large repositories\n";
+                       $ignored_err{$err_key} = 1;
+               }
+               return;
+       }
+       die "Error from SVN, ($errno): ", $err->expanded_message,"\n";
+}
+
 package Git::SVN::Log;
 use strict;
 use warnings;
 use POSIX qw/strftime/;
+use Time::Local;
+use constant commit_log_separator => ('-' x 72) . "\n";
 use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
             %rusers $show_commit $incremental/;
 my $l_fmt;
@@ -2367,12 +5456,19 @@ package Git::SVN::Log;
 sub cmt_showable {
        my ($c) = @_;
        return 1 if defined $c->{r};
+
+       # big commit message got truncated by the 16k pretty buffer in rev-list
        if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
                                $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
+               @{$c->{l}} = ();
                my @log = command(qw/cat-file commit/, $c->{c});
-               shift @log while ($log[0] ne "\n");
+
+               # shift off the headers
+               shift @log while ($log[0] ne '');
                shift @log;
-               @{$c->{l}} = grep !/^git-svn-id: /, @log;
+
+               # TODO: make $c->{l} not have a trailing newline in the future
+               @{$c->{l}} = map { "$_\n" } grep !/^git-svn-id: /, @log;
 
                (undef, $c->{r}, undef) = ::extract_metadata(
                                (grep(/^git-svn-id: /, @log))[-1]);
@@ -2381,96 +5477,111 @@ sub cmt_showable {
 }
 
 sub log_use_color {
-       return 1 if $color;
-       my ($dc, $dcvar);
-       $dcvar = 'color.diff';
-       $dc = `git-config --get $dcvar`;
-       if ($dc eq '') {
-               # nothing at all; fallback to "diff.color"
-               $dcvar = 'diff.color';
-               $dc = `git-config --get $dcvar`;
-       }
-       chomp($dc);
-       if ($dc eq 'auto') {
-               my $pc;
-               $pc = `git-config --get color.pager`;
-               if ($pc eq '') {
-                       # does not have it -- fallback to pager.color
-                       $pc = `git-config --bool --get pager.color`;
-               }
-               else {
-                       $pc = `git-config --bool --get color.pager`;
-                       if ($?) {
-                               $pc = 'false';
+       return $color || Git->repository->get_colorbool('color.diff');
+}
+
+sub git_svn_log_cmd {
+       my ($r_min, $r_max, @args) = @_;
+       my $head = 'HEAD';
+       my (@files, @log_opts);
+       foreach my $x (@args) {
+               if ($x eq '--' || @files) {
+                       push @files, $x;
+               } else {
+                       if (::verify_ref("$x^0")) {
+                               $head = $x;
+                       } else {
+                               push @log_opts, $x;
                        }
                }
-               chomp($pc);
-               if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
-                       return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
-               }
-               return 0;
        }
-       return 0 if $dc eq 'never';
-       return 1 if $dc eq 'always';
-       chomp($dc = `git-config --bool --get $dcvar`);
-       return ($dc eq 'true');
-}
 
-sub git_svn_log_cmd {
-       my ($r_min, $r_max) = @_;
-       my $gs = Git::SVN->_new;
+       my ($url, $rev, $uuid, $gs) = ::working_head_info($head);
+       $gs ||= Git::SVN->_new;
        my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
                   $gs->refname);
        push @cmd, '-r' unless $non_recursive;
        push @cmd, qw/--raw --name-status/ if $verbose;
        push @cmd, '--color' if log_use_color();
-       return @cmd unless defined $r_max;
-       if ($r_max == $r_min) {
+       push @cmd, @log_opts;
+       if (defined $r_max && $r_max == $r_min) {
                push @cmd, '--max-count=1';
-               if (my $c = $gs->rev_db_get($r_max)) {
+               if (my $c = $gs->rev_map_get($r_max)) {
                        push @cmd, $c;
                }
-       } else {
-               my ($c_min, $c_max);
-               $c_max = $gs->rev_db_get($r_max);
-               $c_min = $gs->rev_db_get($r_min);
-               if (defined $c_min && defined $c_max) {
-                       if ($r_max > $r_max) {
-                               push @cmd, "$c_min..$c_max";
-                       } else {
-                               push @cmd, "$c_max..$c_min";
-                       }
-               } elsif ($r_max > $r_min) {
-                       push @cmd, $c_max;
+       } elsif (defined $r_max) {
+               if ($r_max < $r_min) {
+                       ($r_min, $r_max) = ($r_max, $r_min);
+               }
+               my (undef, $c_max) = $gs->find_rev_before($r_max, 1, $r_min);
+               my (undef, $c_min) = $gs->find_rev_after($r_min, 1, $r_max);
+               # If there are no commits in the range, both $c_max and $c_min
+               # will be undefined.  If there is at least 1 commit in the
+               # range, both will be defined.
+               return () if !defined $c_min || !defined $c_max;
+               if ($c_min eq $c_max) {
+                       push @cmd, '--max-count=1', $c_min;
                } else {
-                       push @cmd, $c_min;
+                       push @cmd, '--boundary', "$c_min..$c_max";
                }
        }
-       return @cmd;
+       return (@cmd, @files);
 }
 
 # adapted from pager.c
 sub config_pager {
-       $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
-       if (!defined $pager) {
-               $pager = 'less';
-       } elsif (length $pager == 0 || $pager eq 'cat') {
+       if (! -t *STDOUT) {
+               $ENV{GIT_PAGER_IN_USE} = 'false';
+               $pager = undef;
+               return;
+       }
+       chomp($pager = command_oneline(qw(var GIT_PAGER)));
+       if ($pager eq 'cat') {
                $pager = undef;
        }
+       $ENV{GIT_PAGER_IN_USE} = defined($pager);
 }
 
 sub run_pager {
-       return unless -t *STDOUT;
-       pipe my $rfd, my $wfd or return;
-       defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
+       return unless defined $pager;
+       pipe my ($rfd, $wfd) or return;
+       defined(my $pid = fork) or ::fatal "Can't fork: $!";
        if (!$pid) {
                open STDOUT, '>&', $wfd or
-                                    ::fatal "Can't redirect to stdout: $!\n";
+                                    ::fatal "Can't redirect to stdout: $!";
                return;
        }
-       open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
+       open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!";
        $ENV{LESS} ||= 'FRSX';
-       exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
+       exec $pager or ::fatal "Can't run pager: $! ($pager)";
+}
+
+sub format_svn_date {
+       # some systmes don't handle or mishandle %z, so be creative.
+       my $t = shift || time;
+       my $gm = timelocal(gmtime($t));
+       my $sign = qw( + + - )[ $t <=> $gm ];
+       my $gmoff = sprintf("%s%02d%02d", $sign, (gmtime(abs($t - $gm)))[2,1]);
+       return strftime("%Y-%m-%d %H:%M:%S $gmoff (%a, %d %b %Y)", localtime($t));
+}
+
+sub parse_git_date {
+       my ($t, $tz) = @_;
+       # Date::Parse isn't in the standard Perl distro :(
+       if ($tz =~ s/^\+//) {
+               $t += tz_to_s_offset($tz);
+       } elsif ($tz =~ s/^\-//) {
+               $t -= tz_to_s_offset($tz);
+       }
+       return $t;
+}
+
+sub set_local_timezone {
+       if (defined $TZ) {
+               $ENV{TZ} = $TZ;
+       } else {
+               delete $ENV{TZ};
+       }
 }
 
 sub tz_to_s_offset {
@@ -2493,13 +5604,7 @@ sub get_author_info {
        $dest->{t} = $t;
        $dest->{tz} = $tz;
        $dest->{a} = $au;
-       # Date::Parse isn't in the standard Perl distro :(
-       if ($tz =~ s/^\+//) {
-               $t += tz_to_s_offset($tz);
-       } elsif ($tz =~ s/^\-//) {
-               $t -= tz_to_s_offset($tz);
-       }
-       $dest->{t_utc} = $t;
+       $dest->{t_utc} = parse_git_date($t, $tz);
 }
 
 sub process_commit {
@@ -2551,10 +5656,9 @@ sub show_commit_changed_paths {
 
 sub show_commit_normal {
        my ($c) = @_;
-       print '-' x72, "\nr$c->{r} | ";
+       print commit_log_separator, "r$c->{r} | ";
        print "$c->{c} | " if $show_commit;
-       print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
-                                localtime($c->{t_utc})), ' | ';
+       print "$c->{a} | ", format_svn_date($c->{t_utc}), ' | ';
        my $nr_line = 0;
 
        if (my $l = $c->{l}) {
@@ -2582,7 +5686,7 @@ sub show_commit_normal {
                print "\n";
 
        }
-       foreach my $x (qw/raw diff/) {
+       foreach my $x (qw/raw stat diff/) {
                if ($c->{$x}) {
                        print "\n";
                        print $_ foreach @{$c->{$x}}
@@ -2594,11 +5698,7 @@ sub cmd_show_log {
        my (@args) = @_;
        my ($r_min, $r_max);
        my $r_last = -1; # prevent dupes
-       if (defined $TZ) {
-               $ENV{TZ} = $TZ;
-       } else {
-               delete $ENV{TZ};
-       }
+       set_local_timezone();
        if (defined $::_revision) {
                if ($::_revision =~ /^(\d+):(\d+)$/) {
                        ($r_min, $r_max) = ($1, $2);
@@ -2606,18 +5706,22 @@ sub cmd_show_log {
                        $r_min = $r_max = $::_revision;
                } else {
                        ::fatal "-r$::_revision is not supported, use ",
-                               "standard \'git log\' arguments instead\n";
+                               "standard 'git log' arguments instead";
                }
        }
 
        config_pager();
-       @args = (git_svn_log_cmd($r_min, $r_max), @args);
+       @args = git_svn_log_cmd($r_min, $r_max, @args);
+       if (!@args) {
+               print commit_log_separator unless $incremental || $oneline;
+               return;
+       }
        my $log = command_output_pipe(@args);
        run_pager();
-       my (@k, $c, $d);
+       my (@k, $c, $d, $stat);
        my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
        while (<$log>) {
-               if (/^${esc_color}commit ($::sha1_short)/o) {
+               if (/^${esc_color}commit -?($::sha1_short)/o) {
                        my $cmt = $1;
                        if ($c && cmt_showable($c) && $c->{r} != $r_last) {
                                $r_last = $c->{r};
@@ -2642,6 +5746,13 @@ sub cmd_show_log {
                        push @{$c->{diff}}, $_;
                } elsif ($d) {
                        push @{$c->{diff}}, $_;
+               } elsif (/^\ .+\ \|\s*\d+\ $esc_color[\+\-]*
+                         $esc_color*[\+\-]*$esc_color$/x) {
+                       $stat = 1;
+                       push @{$c->{stat}}, $_;
+               } elsif ($stat && /^ \d+ files changed, \d+ insertions/) {
+                       push @{$c->{stat}}, $_;
+                       $stat = undef;
                } elsif (/^${esc_color}    (git-svn-id:.+)$/o) {
                        ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
                } elsif (s/^${esc_color}    //o) {
@@ -2653,14 +5764,73 @@ sub cmd_show_log {
                process_commit($c, $r_min, $r_max, \@k);
        }
        if (@k) {
-               my $swap = $r_max;
-               $r_max = $r_min;
-               $r_min = $swap;
+               ($r_min, $r_max) = ($r_max, $r_min);
                process_commit($_, $r_min, $r_max) foreach reverse @k;
        }
 out:
        close $log;
-       print '-' x72,"\n" unless $incremental || $oneline;
+       print commit_log_separator unless $incremental || $oneline;
+}
+
+sub cmd_blame {
+       my $path = pop;
+
+       config_pager();
+       run_pager();
+
+       my ($fh, $ctx, $rev);
+
+       if ($_git_format) {
+               ($fh, $ctx) = command_output_pipe('blame', @_, $path);
+               while (my $line = <$fh>) {
+                       if ($line =~ /^\^?([[:xdigit:]]+)\s/) {
+                               # Uncommitted edits show up as a rev ID of
+                               # all zeros, which we can't look up with
+                               # cmt_metadata
+                               if ($1 !~ /^0+$/) {
+                                       (undef, $rev, undef) =
+                                               ::cmt_metadata($1);
+                                       $rev = '0' if (!$rev);
+                               } else {
+                                       $rev = '0';
+                               }
+                               $rev = sprintf('%-10s', $rev);
+                               $line =~ s/^\^?[[:xdigit:]]+(\s)/$rev$1/;
+                       }
+                       print $line;
+               }
+       } else {
+               ($fh, $ctx) = command_output_pipe('blame', '-p', @_, 'HEAD',
+                                                 '--', $path);
+               my ($sha1);
+               my %authors;
+               my @buffer;
+               my %dsha; #distinct sha keys
+
+               while (my $line = <$fh>) {
+                       push @buffer, $line;
+                       if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
+                               $dsha{$1} = 1;
+                       }
+               }
+
+               my $s2r = ::cmt_sha2rev_batch([keys %dsha]);
+
+               foreach my $line (@buffer) {
+                       if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
+                               $rev = $s2r->{$1};
+                               $rev = '0' if (!$rev)
+                       }
+                       elsif ($line =~ /^author (.*)/) {
+                               $authors{$rev} = $1;
+                               $authors{$rev} =~ s/\s/_/g;
+                       }
+                       elsif ($line =~ /^\t(.*)$/) {
+                               printf("%6s %10s %s\n", $rev, $authors{$rev}, $1);
+                       }
+               }
+       }
+       command_close_pipe($fh, $ctx);
 }
 
 package Git::SVN::Migration;
@@ -2677,6 +5847,9 @@ package Git::SVN::Migration;
 #            - info/url may remain for backwards compatibility
 #            - this is what we migrate up to this layout automatically,
 #            - this will be used by git svn init on single branches
+# v3.1 layout (auto migrated):
+#            - .rev_db => .rev_db.$UUID, .rev_db will remain as a symlink
+#              for backwards compatibility
 #
 # v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
 #            - this is only created for newly multi-init-ed
@@ -2684,6 +5857,16 @@ package Git::SVN::Migration;
 #              --use-separate-remotes option in git-clone (now default)
 #            - we do not automatically migrate to this (following
 #              the example set by core git)
+#
+# v5 layout: .rev_db.$UUID => .rev_map.$UUID
+#            - newer, more-efficient format that uses 24-bytes per record
+#              with no filler space.
+#            - use xxd -c24 < .rev_map.$UUID to view and debug
+#            - This is a one-way migration, repositories updated to the
+#              new format will not be able to use old git-svn without
+#              rebuilding the .rev_db.  Rebuilding the rev_db is not
+#              possible if noMetadata or useSvmProps are set; but should
+#              be no problem for users that use the (sensible) defaults.
 use strict;
 use warnings;
 use Carp qw/croak/;
@@ -2736,7 +5919,7 @@ sub migrate_from_v1 {
        mkpath([$svn_dir]);
        print STDERR "Data from a previous version of git-svn exists, but\n\t",
                     "$svn_dir\n\t(required for this version ",
-                    "($::VERSION) of git-svn) does not. exist\n";
+                    "($::VERSION) of git-svn) does not exist.\n";
        my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
        while (<$fh>) {
                my $x = $_;
@@ -2799,7 +5982,10 @@ sub migrate_from_v2 {
        my $migrated = 0;
 
        foreach my $ref_id (sort keys %l_map) {
-               Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
+               eval { Git::SVN->init($l_map{$ref_id}, '', undef, $ref_id) };
+               if ($@) {
+                       Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
+               }
                $migrated++;
        }
        $migrated;
@@ -2816,15 +6002,14 @@ sub minimize_connections {
 
                # skip existing cases where we already connect to the root
                if (($ra->{url} eq $ra->{repos_root}) ||
-                   (Git::SVN::sanitize_remote_name($ra->{repos_root}) eq
-                    $repo_id)) {
+                   ($ra->{repos_root} eq $repo_id)) {
                        $root_repos->{$ra->{url}} = $repo_id;
                        next;
                }
 
                my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
                my $root_path = $ra->{url};
-               $root_path =~ s#^\Q$ra->{repos_root}\E/*##;
+               $root_path =~ s#^\Q$ra->{repos_root}\E(/|$)##;
                foreach my $path (keys %$fetch) {
                        my $ref_id = $fetch->{$path};
                        my $gs = Git::SVN->new($ref_id, $repo_id, $path);
@@ -2856,8 +6041,7 @@ sub minimize_connections {
        foreach my $url (keys %$new_urls) {
                # see if we can re-use an existing [svn-remote "repo_id"]
                # instead of creating a(n ugly) new section:
-               my $repo_id = $root_repos->{$url} ||
-                             Git::SVN::sanitize_remote_name($url);
+               my $repo_id = $root_repos->{$url} || $url;
 
                my $fetch = $new_urls->{$url};
                foreach my $path (keys %$fetch) {
@@ -2866,7 +6050,7 @@ sub minimize_connections {
                        my $pfx = "svn-remote.$x->{old_repo_id}";
 
                        my $old_fetch = quotemeta("$x->{old_path}:".
-                                                 "refs/remotes/$x->{ref_id}");
+                                                 "$x->{ref_id}");
                        command_noisy(qw/config --unset/,
                                      "$pfx.fetch", '^'. $old_fetch . '$');
                        delete $r->{$x->{old_repo_id}}->
@@ -2879,8 +6063,7 @@ sub minimize_connections {
                }
        }
        if (@emptied) {
-               my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
-                          "$ENV{GIT_DIR}/config";
+               my $file = $ENV{GIT_CONFIG} || "$ENV{GIT_DIR}/config";
                print STDERR <<EOF;
 The following [svn-remote] sections in your config file ($file) are empty
 and can be safely removed:
@@ -2928,10 +6111,95 @@ sub DESTROY {
        command_close_pipe($self->{gui}, $self->{ctx});
 }
 
+package Git::SVN::GlobSpec;
+use strict;
+use warnings;
+
+sub new {
+       my ($class, $glob, $pattern_ok) = @_;
+       my $re = $glob;
+       $re =~ s!/+$!!g; # no need for trailing slashes
+       my (@left, @right, @patterns);
+       my $state = "left";
+       my $die_msg = "Only one set of wildcard directories " .
+                               "(e.g. '*' or '*/*/*') is supported: '$glob'\n";
+       for my $part (split(m|/|, $glob)) {
+               if ($part =~ /\*/ && $part ne "*") {
+                       die "Invalid pattern in '$glob': $part\n";
+               } elsif ($pattern_ok && $part =~ /[{}]/ &&
+                        $part !~ /^\{[^{}]+\}/) {
+                       die "Invalid pattern in '$glob': $part\n";
+               }
+               if ($part eq "*") {
+                       die $die_msg if $state eq "right";
+                       $state = "pattern";
+                       push(@patterns, "[^/]*");
+               } elsif ($pattern_ok && $part =~ /^\{(.*)\}$/) {
+                       die $die_msg if $state eq "right";
+                       $state = "pattern";
+                       my $p = quotemeta($1);
+                       $p =~ s/\\,/|/g;
+                       push(@patterns, "(?:$p)");
+               } else {
+                       if ($state eq "left") {
+                               push(@left, $part);
+                       } else {
+                               push(@right, $part);
+                               $state = "right";
+                       }
+               }
+       }
+       my $depth = @patterns;
+       if ($depth == 0) {
+               die "One '*' is needed in glob: '$glob'\n";
+       }
+       my $left = join('/', @left);
+       my $right = join('/', @right);
+       $re = join('/', @patterns);
+       $re = join('\/',
+                  grep(length, quotemeta($left), "($re)", quotemeta($right)));
+       my $left_re = qr/^\/\Q$left\E(\/|$)/;
+       bless { left => $left, right => $right, left_regex => $left_re,
+               regex => qr/$re/, glob => $glob, depth => $depth }, $class;
+}
+
+sub full_path {
+       my ($self, $path) = @_;
+       return (length $self->{left} ? "$self->{left}/" : '') .
+              $path . (length $self->{right} ? "/$self->{right}" : '');
+}
+
 __END__
 
 Data structures:
 
+
+$remotes = { # returned by read_all_remotes()
+       'svn' => {
+               # svn-remote.svn.url=https://svn.musicpd.org
+               url => 'https://svn.musicpd.org',
+               # svn-remote.svn.fetch=mpd/trunk:trunk
+               fetch => {
+                       'mpd/trunk' => 'trunk',
+               },
+               # svn-remote.svn.tags=mpd/tags/*:tags/*
+               tags => {
+                       path => {
+                               left => 'mpd/tags',
+                               right => '',
+                               regex => qr!mpd/tags/([^/]+)$!,
+                               glob => 'tags/*',
+                       },
+                       ref => {
+                               left => 'tags',
+                               right => '',
+                               regex => qr!tags/([^/]+)$!,
+                               glob => 'tags/*',
+                       },
+               }
+       }
+};
+
 $log_entry hashref as returned by libsvn_log_entry()
 {
        log => 'whitespace-formatted log entry