Merge branch 'maint' into tj/imap-send-remove-unusedtj/maint-imap-send-remove-unused

* maint: (18123 commits)
  documentation fix: git difftool uses diff tools, not merge tools.
  Git 1.7.7.4
  Makefile: add missing header file dependencies
  notes merge: eliminate OUTPUT macro
  mailmap: xcalloc mailmap_info
  name-rev --all: do not even attempt to describe non-commit object
  Git 1.7.7.3
  docs: Update install-doc-quick
  docs: don't mention --quiet or --exit-code in git-log(1)
  Git 1.7.7.2
  t7511: avoid use of reserved filename on Windows.
  clone: Quote user supplied path in a single quote pair
  read-cache.c: fix index memory allocation
  make the sample pre-commit hook script reject names with newlines, too
  Reindent closing bracket using tab instead of spaces
  Git 1.7.7.1
  RelNotes/1.7.7.1: setgid bit patch is about fixing "git init" via Makefile setting
  gitweb: fix regression when filtering out forks
  Almost ready for 1.7.7.1
  pack-objects: don't traverse objects unnecessarily
  ...

Conflicts:
	imap-send.c

1 files changed, 566 insertions, 326 deletions

diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 02d1928ada..8d41610bcf 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 
 # This tool is copyright (c) 2005, Matthias Urlichs.
 # It is released under the Gnu Public License, version 2.
@@ -13,31 +13,35 @@
 # The head revision is on branch "origin" by default.
 # You can change that with the '-o' option.
 
+use 5.008;
 use strict;
 use warnings;
-use Getopt::Std;
+use Getopt::Long;
 use File::Spec;
-use File::Temp qw(tempfile);
+use File::Temp qw(tempfile tmpnam);
 use File::Path qw(mkpath);
 use File::Basename qw(basename dirname);
 use Time::Local;
 use IO::Socket;
 use IO::Pipe;
-use POSIX qw(strftime dup2);
+use POSIX qw(strftime dup2 ENOENT);
 use IPC::Open2;
 
 $SIG{'PIPE'}="IGNORE";
 $ENV{'TZ'}="UTC";
 
-our($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_P, $opt_s,$opt_m,$opt_M,$opt_A,$opt_S);
+our ($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_P, $opt_s,$opt_m,@opt_M,$opt_A,$opt_S,$opt_L, $opt_a, $opt_r, $opt_R);
 my (%conv_author_name, %conv_author_email);
 
-sub usage() {
+sub usage(;$) {
+	my $msg = shift;
+	print(STDERR "Error: $msg\n") if $msg;
 	print STDERR <<END;
-Usage: ${\basename $0}     # fetch/update GIT from CVS
+Usage: git cvsimport     # fetch/update GIT from CVS
        [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
-       [-p opts-for-cvsps] [-C GIT_repository] [-z fuzz] [-i] [-k] [-u]
-       [-s subst] [-m] [-M regex] [-S regex] [CVS_module]
+       [-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k]
+       [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]
+       [-r remote] [-R] [CVS_module]
 END
 	exit(1);
 }
@@ -85,50 +89,115 @@ sub write_author_info($) {
 	close ($f);
 }
 
-getopts("hivmkuo:d:p:C:z:s:M:P:A:S:") or usage();
+# convert getopts specs for use by git config
+my %longmap = (
+	'A:' => 'authors-file',
+	'M:' => 'merge-regex',
+	'P:' => undef,
+	'R' => 'track-revisions',
+	'S:' => 'ignore-paths',
+);
+
+sub read_repo_config {
+	# Split the string between characters, unless there is a ':'
+	# So "abc:de" becomes ["a", "b", "c:", "d", "e"]
+	my @opts = split(/ *(?!:)/, shift);
+	foreach my $o (@opts) {
+		my $key = $o;
+		$key =~ s/://g;
+		my $arg = 'git config';
+		$arg .= ' --bool' if ($o !~ /:$/);
+		my $ckey = $key;
+
+		if (exists $longmap{$o}) {
+			# An uppercase option like -R cannot be
+			# expressed in the configuration, as the
+			# variable names are downcased.
+			$ckey = $longmap{$o};
+			next if (! defined $ckey);
+			$ckey =~ s/-//g;
+		}
+		chomp(my $tmp = `$arg --get cvsimport.$ckey`);
+		if ($tmp && !($arg =~ /--bool/ && $tmp eq 'false')) {
+			no strict 'refs';
+			my $opt_name = "opt_" . $key;
+			if (!$$opt_name) {
+				$$opt_name = $tmp;
+			}
+		}
+	}
+}
+
+my $opts = "haivmkuo:d:p:r:C:z:s:M:P:A:S:L:R";
+read_repo_config($opts);
+Getopt::Long::Configure( 'no_ignore_case', 'bundling' );
+
+# turn the Getopt::Std specification in a Getopt::Long one,
+# with support for multiple -M options
+GetOptions( map { s/:/=s/; /M/ ? "$_\@" : $_ } split( /(?!:)/, $opts ) )
+    or usage();
 usage if $opt_h;
 
-@ARGV <= 1 or usage();
+if (@ARGV == 0) {
+		chomp(my $module = `git config --get cvsimport.module`);
+		push(@ARGV, $module) if $? == 0;
+}
+@ARGV <= 1 or usage("You can't specify more than one CVS module");
 
-if($opt_d) {
+if ($opt_d) {
 	$ENV{"CVSROOT"} = $opt_d;
-} elsif(-f 'CVS/Root') {
+} elsif (-f 'CVS/Root') {
 	open my $f, '<', 'CVS/Root' or die 'Failed to open CVS/Root';
 	$opt_d = <$f>;
 	chomp $opt_d;
 	close $f;
 	$ENV{"CVSROOT"} = $opt_d;
-} elsif($ENV{"CVSROOT"}) {
+} elsif ($ENV{"CVSROOT"}) {
 	$opt_d = $ENV{"CVSROOT"};
 } else {
-	die "CVSROOT needs to be set";
+	usage("CVSROOT needs to be set");
 }
-$opt_o ||= "origin";
 $opt_s ||= "-";
+$opt_a ||= 0;
+
 my $git_tree = $opt_C;
 $git_tree ||= ".";
 
+my $remote;
+if (defined $opt_r) {
+	$remote = 'refs/remotes/' . $opt_r;
+	$opt_o ||= "master";
+} else {
+	$opt_o ||= "origin";
+	$remote = 'refs/heads';
+}
+
 my $cvs_tree;
 if ($#ARGV == 0) {
 	$cvs_tree = $ARGV[0];
 } elsif (-f 'CVS/Repository') {
-	open my $f, '<', 'CVS/Repository' or 
+	open my $f, '<', 'CVS/Repository' or
 	    die 'Failed to open CVS/Repository';
 	$cvs_tree = <$f>;
 	chomp $cvs_tree;
 	close $f;
 } else {
-	usage();
+	usage("CVS module has to be specified");
 }
 
 our @mergerx = ();
 if ($opt_m) {
-	@mergerx = ( qr/\W(?:from|of|merge|merging|merged) (\w+)/i );
+	@mergerx = ( qr/\b(?:from|of|merge|merging|merged) ([-\w]+)/i );
 }
-if ($opt_M) {
-	push (@mergerx, qr/$opt_M/);
+if (@opt_M) {
+	push (@mergerx, map { qr/$_/ } @opt_M);
 }
 
+# Remember UTC of our starting time
+# we'll want to avoid importing commits
+# that are too recent
+our $starttime = time();
+
 select(STDERR); $|=1; select(STDOUT);
 
 
@@ -141,7 +210,7 @@ use File::Temp qw(tempfile);
 use POSIX qw(strftime dup2);
 
 sub new {
-	my($what,$repo,$subdir) = @_;
+	my ($what,$repo,$subdir) = @_;
 	$what=ref($what) if ref($what);
 
 	my $self = {};
@@ -158,44 +227,121 @@ sub new {
 	return $self;
 }
 
+sub find_password_entry {
+	my ($cvspass, @cvsroot) = @_;
+	my ($file, $delim) = @$cvspass;
+	my $pass;
+	local ($_);
+
+	if (open(my $fh, $file)) {
+		# :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah<Z
+		CVSPASSFILE:
+		while (<$fh>) {
+			chomp;
+			s/^\/\d+\s+//;
+			my ($w, $p) = split($delim,$_,2);
+			for my $cvsroot (@cvsroot) {
+				if ($w eq $cvsroot) {
+					$pass = $p;
+					last CVSPASSFILE;
+				}
+			}
+		}
+		close($fh);
+	}
+	return $pass;
+}
+
 sub conn {
 	my $self = shift;
 	my $repo = $self->{'fullrep'};
-	if($repo =~ s/^:pserver:(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) {
-		my($user,$pass,$serv,$port) = ($1,$2,$3,$4);
-		$user="anonymous" unless defined $user;
+	if ($repo =~ s/^:pserver(?:([^:]*)):(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) {
+		my ($param,$user,$pass,$serv,$port) = ($1,$2,$3,$4,$5);
+
+		my ($proxyhost,$proxyport);
+		if ($param && ($param =~ m/proxy=([^;]+)/)) {
+			$proxyhost = $1;
+			# Default proxyport, if not specified, is 8080.
+			$proxyport = 8080;
+			if ($ENV{"CVS_PROXY_PORT"}) {
+				$proxyport = $ENV{"CVS_PROXY_PORT"};
+			}
+			if ($param =~ m/proxyport=([^;]+)/) {
+				$proxyport = $1;
+			}
+		}
+		$repo ||= '/';
+
+		# if username is not explicit in CVSROOT, then use current user, as cvs would
+		$user=(getlogin() || $ENV{'LOGNAME'} || $ENV{'USER'} || "anonymous") unless $user;
 		my $rr2 = "-";
-		unless($port) {
+		unless ($port) {
 			$rr2 = ":pserver:$user\@$serv:$repo";
 			$port=2401;
 		}
 		my $rr = ":pserver:$user\@$serv:$port$repo";
 
-		unless($pass) {
-			open(H,$ENV{'HOME'}."/.cvspass") and do {
-				# :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah<Z
-				while(<H>) {
-					chomp;
-					s/^\/\d+\s+//;
-					my ($w,$p) = split(/\s/,$_,2);
-					if($w eq $rr or $w eq $rr2) {
-						$pass = $p;
-						last;
-					}
+		if ($pass) {
+			$pass = $self->_scramble($pass);
+		} else {
+			my @cvspass = ([$ENV{'HOME'}."/.cvspass", qr/\s/],
+				       [$ENV{'HOME'}."/.cvs/cvspass", qr/=/]);
+			my @loc = ();
+			foreach my $cvspass (@cvspass) {
+				my $p = find_password_entry($cvspass, $rr, $rr2);
+				if ($p) {
+					push @loc, $cvspass->[0];
+					$pass = $p;
 				}
-			};
+			}
+
+			if (1 < @loc) {
+				die("Multiple cvs password files have ".
+				    "entries for CVSROOT $opt_d: @loc");
+			} elsif (!$pass) {
+				$pass = "A";
+			}
+		}
+
+		my ($s, $rep);
+		if ($proxyhost) {
+
+			# Use a HTTP Proxy. Only works for HTTP proxies that
+			# don't require user authentication
+			#
+			# See: http://www.ietf.org/rfc/rfc2817.txt
+
+			$s = IO::Socket::INET->new(PeerHost => $proxyhost, PeerPort => $proxyport);
+			die "Socket to $proxyhost: $!\n" unless defined $s;
+			$s->write("CONNECT $serv:$port HTTP/1.1\r\nHost: $serv:$port\r\n\r\n")
+	                        or die "Write to $proxyhost: $!\n";
+	                $s->flush();
+
+			$rep = <$s>;
+
+			# The answer should look like 'HTTP/1.x 2yy ....'
+			if (!($rep =~ m#^HTTP/1\.. 2[0-9][0-9]#)) {
+				die "Proxy connect: $rep\n";
+			}
+			# Skip up to the empty line of the proxy server output
+			# including the response headers.
+			while ($rep = <$s>) {
+				last if (!defined $rep ||
+					 $rep eq "\n" ||
+					 $rep eq "\r\n");
+			}
+		} else {
+			$s = IO::Socket::INET->new(PeerHost => $serv, PeerPort => $port);
+			die "Socket to $serv: $!\n" unless defined $s;
 		}
-		$pass="A" unless $pass;
 
-		my $s = IO::Socket::INET->new(PeerHost => $serv, PeerPort => $port);
-		die "Socket to $serv: $!\n" unless defined $s;
 		$s->write("BEGIN AUTH REQUEST\n$repo\n$user\n$pass\nEND AUTH REQUEST\n")
 			or die "Write to $serv: $!\n";
 		$s->flush();
 
-		my $rep = <$s>;
+		$rep = <$s>;
 
-		if($rep ne "I LOVE YOU\n") {
+		if ($rep ne "I LOVE YOU\n") {
 			$rep="<unknown>" unless $rep;
 			die "AuthReply: $rep\n";
 		}
@@ -227,7 +373,7 @@ sub conn {
 		    }
 		}
 
-		unless($pid) {
+		unless ($pid) {
 			$pr->writer();
 			$pw->reader();
 			dup2($pw->fileno(),0);
@@ -249,8 +395,10 @@ sub conn {
 	$self->{'socketo'}->write("valid-requests\n");
 	$self->{'socketo'}->flush();
 
-	chomp(my $rep=$self->readline());
-	if($rep !~ s/^Valid-requests\s*//) {
+	my $rep=$self->readline();
+	die "Failed to read from server" unless defined $rep;
+	chomp($rep);
+	if ($rep !~ s/^Valid-requests\s*//) {
 		$rep="<unknown>" unless $rep;
 		die "Expected Valid-requests from server, but got: $rep\n";
 	}
@@ -262,14 +410,14 @@ sub conn {
 }
 
 sub readline {
-	my($self) = @_;
+	my ($self) = @_;
 	return $self->{'socketi'}->getline();
 }
 
 sub _file {
 	# Request a file with a given revision.
 	# Trial and error says this is a good way to do it. :-/
-	my($self,$fn,$rev) = @_;
+	my ($self,$fn,$rev) = @_;
 	$self->{'socketo'}->write("Argument -N\n") or return undef;
 	$self->{'socketo'}->write("Argument -P\n") or return undef;
 	# -kk: Linus' version doesn't use it - defaults to off
@@ -291,12 +439,12 @@ sub _file {
 sub _line {
 	# Read a line from the server.
 	# ... except that 'line' may be an entire file. ;-)
-	my($self, $fh) = @_;
+	my ($self, $fh) = @_;
 	die "Not in lines" unless defined $self->{'lines'};
 
 	my $line;
 	my $res=0;
-	while(defined($line = $self->readline())) {
+	while (defined($line = $self->readline())) {
 		# M U gnupg-cvs-rep/AUTHORS
 		# Updated gnupg-cvs-rep/
 		# /daten/src/rsync/gnupg-cvs-rep/AUTHORS
@@ -305,7 +453,7 @@ sub _line {
 		# 0
 		# ok
 
-		if($line =~ s/^(?:Created|Updated) //) {
+		if ($line =~ s/^(?:Created|Updated) //) {
 			$line = $self->readline(); # path
 			$line = $self->readline(); # Entries line
 			my $mode = $self->readline(); chomp $mode;
@@ -315,42 +463,27 @@ sub _line {
 			chomp $cnt;
 			die "Duh: Filesize $cnt" if $cnt !~ /^\d+$/;
 			$line="";
-			$res=0;
-			while($cnt) {
-				my $buf;
-				my $num = $self->{'socketi'}->read($buf,$cnt);
-				die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0;
-				print $fh $buf;
-				$res += $num;
-				$cnt -= $num;
-			}
-		} elsif($line =~ s/^ //) {
+			$res = $self->_fetchfile($fh, $cnt);
+		} elsif ($line =~ s/^ //) {
 			print $fh $line;
 			$res += length($line);
-		} elsif($line =~ /^M\b/) {
+		} elsif ($line =~ /^M\b/) {
 			# output, do nothing
-		} elsif($line =~ /^Mbinary\b/) {
+		} elsif ($line =~ /^Mbinary\b/) {
 			my $cnt;
 			die "EOF from server after 'Mbinary'" unless defined ($cnt = $self->readline());
 			chomp $cnt;
 			die "Duh: Mbinary $cnt" if $cnt !~ /^\d+$/ or $cnt<1;
 			$line="";
-			while($cnt) {
-				my $buf;
-				my $num = $self->{'socketi'}->read($buf,$cnt);
-				die "S: Mbinary $cnt: $num: $!\n" if not defined $num or $num<=0;
-				print $fh $buf;
-				$res += $num;
-				$cnt -= $num;
-			}
+			$res += $self->_fetchfile($fh, $cnt);
 		} else {
 			chomp $line;
-			if($line eq "ok") {
+			if ($line eq "ok") {
 				# print STDERR "S: ok (".length($res).")\n";
 				return $res;
-			} elsif($line =~ s/^E //) {
+			} elsif ($line =~ s/^E //) {
 				# print STDERR "S: $line\n";
-			} elsif($line =~ /^Remove-entry /i) {
+			} elsif ($line =~ /^(Remove-entry|Removed) /i) {
 				$line = $self->readline(); # filename
 				$line = $self->readline(); # OK
 				chomp $line;
@@ -364,10 +497,10 @@ sub _line {
 	return undef;
 }
 sub file {
-	my($self,$fn,$rev) = @_;
+	my ($self,$fn,$rev) = @_;
 	my $res;
 
-	my ($fh, $name) = tempfile('gitcvs.XXXXXX', 
+	my ($fh, $name) = tempfile('gitcvs.XXXXXX',
 		    DIR => File::Spec->tmpdir(), UNLINK => 1);
 
 	$self->_file($fn,$rev) and $res = $self->_line($fh);
@@ -384,7 +517,60 @@ sub file {
 
 	return ($name, $res);
 }
+sub _fetchfile {
+	my ($self, $fh, $cnt) = @_;
+	my $res = 0;
+	my $bufsize = 1024 * 1024;
+	while ($cnt) {
+	    if ($bufsize > $cnt) {
+		$bufsize = $cnt;
+	    }
+	    my $buf;
+	    my $num = $self->{'socketi'}->read($buf,$bufsize);
+	    die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0;
+	    print $fh $buf;
+	    $res += $num;
+	    $cnt -= $num;
+	}
+	return $res;
+}
 
+sub _scramble {
+	my ($self, $pass) = @_;
+	my $scrambled = "A";
+
+	return $scrambled unless $pass;
+
+	my $pass_len = length($pass);
+	my @pass_arr = split("", $pass);
+	my $i;
+
+	# from cvs/src/scramble.c
+	my @shifts = (
+		  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+		 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+		114,120, 53, 79, 96,109, 72,108, 70, 64, 76, 67,116, 74, 68, 87,
+		111, 52, 75,119, 49, 34, 82, 81, 95, 65,112, 86,118,110,122,105,
+		 41, 57, 83, 43, 46,102, 40, 89, 38,103, 45, 50, 42,123, 91, 35,
+		125, 55, 54, 66,124,126, 59, 47, 92, 71,115, 78, 88,107,106, 56,
+		 36,121,117,104,101,100, 69, 73, 99, 63, 94, 93, 39, 37, 61, 48,
+		 58,113, 32, 90, 44, 98, 60, 51, 33, 97, 62, 77, 84, 80, 85,223,
+		225,216,187,166,229,189,222,188,141,249,148,200,184,136,248,190,
+		199,170,181,204,138,232,218,183,255,234,220,247,213,203,226,193,
+		174,172,228,252,217,201,131,230,197,211,145,238,161,179,160,212,
+		207,221,254,173,202,146,224,151,140,196,205,130,135,133,143,246,
+		192,159,244,239,185,168,215,144,139,165,180,157,147,186,214,176,
+		227,231,219,169,175,156,206,198,129,164,150,210,154,177,134,127,
+		182,128,158,208,162,132,167,209,149,241,153,251,237,236,171,195,
+		243,233,253,240,194,250,191,155,142,137,245,235,163,242,178,152
+	);
+
+	for ($i = 0; $i < $pass_len; $i++) {
+		$scrambled .= pack("C", $shifts[ord($pass_arr[$i])]);
+	}
+
+	return $scrambled;
+}
 
 package main;
 
@@ -392,7 +578,7 @@ my $cvs = CVSconn->new($opt_d, $cvs_tree);
 
 
 sub pdate($) {
-	my($d) = @_;
+	my ($d) = @_;
 	m#(\d{2,4})/(\d\d)/(\d\d)\s(\d\d):(\d\d)(?::(\d\d))?#
 		or die "Unparseable date: $d\n";
 	my $y=$1; $y-=1900 if $y>1900;
@@ -400,22 +586,22 @@ sub pdate($) {
 }
 
 sub pmode($) {
-	my($mode) = @_;
+	my ($mode) = @_;
 	my $m = 0;
 	my $mm = 0;
 	my $um = 0;
 	for my $x(split(//,$mode)) {
-		if($x eq ",") {
+		if ($x eq ",") {
 			$m |= $mm&$um;
 			$mm = 0;
 			$um = 0;
-		} elsif($x eq "u") { $um |= 0700;
-		} elsif($x eq "g") { $um |= 0070;
-		} elsif($x eq "o") { $um |= 0007;
-		} elsif($x eq "r") { $mm |= 0444;
-		} elsif($x eq "w") { $mm |= 0222;
-		} elsif($x eq "x") { $mm |= 0111;
-		} elsif($x eq "=") { # do nothing
+		} elsif ($x eq "u") { $um |= 0700;
+		} elsif ($x eq "g") { $um |= 0070;
+		} elsif ($x eq "o") { $um |= 0007;
+		} elsif ($x eq "r") { $mm |= 0444;
+		} elsif ($x eq "w") { $mm |= 0222;
+		} elsif ($x eq "x") { $mm |= 0111;
+		} elsif ($x eq "=") { # do nothing
 		} else { die "Unknown mode: $mode\n";
 		}
 	}
@@ -429,86 +615,86 @@ sub getwd() {
 	return $pwd;
 }
 
+sub is_sha1 {
+	my $s = shift;
+	return $s =~ /^[a-f0-9]{40}$/;
+}
 
-sub get_headref($$) {
-    my $name    = shift;
-    my $git_dir = shift; 
-    my $sha;
-    
-    if (open(C,"$git_dir/refs/heads/$name")) {
-	chomp($sha = <C>);
-	close(C);
-	length($sha) == 40
-	    or die "Cannot get head id for $name ($sha): $!\n";
-    }
-    return $sha;
+sub get_headref ($) {
+	my $name = shift;
+	my $r = `git rev-parse --verify '$name' 2>/dev/null`;
+	return undef unless $? == 0;
+	chomp $r;
+	return $r;
 }
 
+my $user_filename_prepend = '';
+sub munge_user_filename {
+	my $name = shift;
+	return File::Spec->file_name_is_absolute($name) ?
+		$name :
+		$user_filename_prepend . $name;
+}
 
 -d $git_tree
 	or mkdir($git_tree,0777)
 	or die "Could not create $git_tree: $!";
-chdir($git_tree);
+if ($git_tree ne '.') {
+	$user_filename_prepend = getwd() . '/';
+	chdir($git_tree);
+}
 
 my $last_branch = "";
 my $orig_branch = "";
 my %branch_date;
+my $tip_at_start = undef;
 
 my $git_dir = $ENV{"GIT_DIR"} || ".git";
 $git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
 $ENV{"GIT_DIR"} = $git_dir;
 my $orig_git_index;
 $orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
-my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx',
-				    DIR => File::Spec->tmpdir());
-close ($git_ih);
-$ENV{GIT_INDEX_FILE} = $git_index;
-unless(-d $git_dir) {
-	system("git-init-db");
+
+my %index; # holds filenames of one index per branch
+
+unless (-d $git_dir) {
+	system(qw(git init));
 	die "Cannot init the GIT db at $git_tree: $?\n" if $?;
-	system("git-read-tree");
+	system(qw(git read-tree --empty));
 	die "Cannot init an empty tree: $?\n" if $?;
 
 	$last_branch = $opt_o;
 	$orig_branch = "";
 } else {
-	-f "$git_dir/refs/heads/$opt_o"
-		or die "Branch '$opt_o' does not exist.\n".
-		       "Either use the correct '-o branch' option,\n".
-		       "or import to a new repository.\n";
-
-	open(F, "git-symbolic-ref HEAD |") or
-		die "Cannot run git-symbolic-ref: $!\n";
+	open(F, "-|", qw(git symbolic-ref HEAD)) or
+		die "Cannot run git symbolic-ref: $!\n";
 	chomp ($last_branch = <F>);
 	$last_branch = basename($last_branch);
 	close(F);
-	unless($last_branch) {
+	unless ($last_branch) {
 		warn "Cannot read the last branch name: $! -- assuming 'master'\n";
 		$last_branch = "master";
 	}
 	$orig_branch = $last_branch;
-
-	# populate index
-	system('git-read-tree', $last_branch);
-	die "read-tree failed: $?\n" if $?;
+	$tip_at_start = `git rev-parse --verify HEAD`;
 
 	# Get the last import timestamps
-	opendir(D,"$git_dir/refs/heads");
-	while(defined(my $head = readdir(D))) {
-		next if $head =~ /^\./;
-		open(F,"$git_dir/refs/heads/$head")
-			or die "Bad head branch: $head: $!\n";
-		chomp(my $ftag = <F>);
-		close(F);
-		open(F,"git-cat-file commit $ftag |");
-		while(<F>) {
-			next unless /^author\s.*\s(\d+)\s[-+]\d{4}$/;
-			$branch_date{$head} = $1;
-			last;
-		}
-		close(F);
+	my $fmt = '($ref, $author) = (%(refname), %(author));';
+	my @cmd = ('git', 'for-each-ref', '--perl', "--format=$fmt", $remote);
+	open(H, "-|", @cmd) or die "Cannot run git for-each-ref: $!\n";
+	while (defined(my $entry = <H>)) {
+		my ($ref, $author);
+		eval($entry) || die "cannot eval refs list: $@";
+		my ($head) = ($ref =~ m|^$remote/(.*)|);
+		$author =~ /^.*\s(\d+)\s[-+]\d{4}$/;
+		$branch_date{$head} = $1;
 	}
-	closedir(D);
+	close(H);
+        if (!exists $branch_date{$opt_o}) {
+		die "Branch '$opt_o' does not exist.\n".
+		       "Either use the correct '-o branch' option,\n".
+		       "or import to a new repository.\n";
+        }
 }
 
 -d $git_dir
@@ -518,28 +704,50 @@ unless(-d $git_dir) {
 -f "$git_dir/cvs-authors" and
   read_author_info("$git_dir/cvs-authors");
 if ($opt_A) {
-	read_author_info($opt_A);
+	read_author_info(munge_user_filename($opt_A));
 	write_author_info("$git_dir/cvs-authors");
 }
 
-my $pid = open(CVS,"-|");
-die "Cannot fork: $!\n" unless defined $pid;
-unless($pid) {
-	my @opt;
-	@opt = split(/,/,$opt_p) if defined $opt_p;
-	unshift @opt, '-z', $opt_z if defined $opt_z;
-	unshift @opt, '-q'         unless defined $opt_v;
-	unless (defined($opt_p) && $opt_p =~ m/--no-cvs-direct/) {
-		push @opt, '--cvs-direct';
+# open .git/cvs-revisions, if requested
+open my $revision_map, '>>', "$git_dir/cvs-revisions"
+    or die "Can't open $git_dir/cvs-revisions for appending: $!\n"
+	if defined $opt_R;
+
+
+#
+# run cvsps into a file unless we are getting
+# it passed as a file via $opt_P
+#
+my $cvspsfile;
+unless ($opt_P) {
+	print "Running cvsps...\n" if $opt_v;
+	my $pid = open(CVSPS,"-|");
+	my $cvspsfh;
+	die "Cannot fork: $!\n" unless defined $pid;
+	unless ($pid) {
+		my @opt;
+		@opt = split(/,/,$opt_p) if defined $opt_p;
+		unshift @opt, '-z', $opt_z if defined $opt_z;
+		unshift @opt, '-q'         unless defined $opt_v;
+		unless (defined($opt_p) && $opt_p =~ m/--no-cvs-direct/) {
+			push @opt, '--cvs-direct';
+		}
+		exec("cvsps","--norc",@opt,"-u","-A",'--root',$opt_d,$cvs_tree);
+		die "Could not start cvsps: $!\n";
 	}
-	if ($opt_P) {
-	    exec("cat", $opt_P);
-	} else {
-	    exec("cvsps","--norc",@opt,"-u","-A",'--root',$opt_d,$cvs_tree);
-	    die "Could not start cvsps: $!\n";
+	($cvspsfh, $cvspsfile) = tempfile('gitXXXXXX', SUFFIX => '.cvsps',
+					  DIR => File::Spec->tmpdir());
+	while (<CVSPS>) {
+	    print $cvspsfh $_;
 	}
+	close CVSPS;
+	$? == 0 or die "git cvsimport: fatal: cvsps reported error\n";
+	close $cvspsfh;
+} else {
+	$cvspsfile = munge_user_filename($opt_P);
 }
 
+open(CVS, "<$cvspsfile") or die $!;
 
 ## cvsps output:
 #---------------------
@@ -559,98 +767,92 @@ unless($pid) {
 
 my $state = 0;
 
-my($patchset,$date,$author_name,$author_email,$branch,$ancestor,$tag,$logmsg);
-my(@old,@new,@skipped);
-my $commit = sub {
-	my $pid;
-	while(@old) {
-		my @o2;
-		if(@old > 55) {
-			@o2 = splice(@old,0,50);
-		} else {
-			@o2 = @old;
-			@old = ();
-		}
-		system("git-update-index","--force-remove","--",@o2);
-		die "Cannot remove files: $?\n" if $?;
-	}
-	while(@new) {
-		my @n2;
-		if(@new > 12) {
-			@n2 = splice(@new,0,10);
-		} else {
-			@n2 = @new;
-			@new = ();
-		}
-		system("git-update-index","--add",
-			(map { ('--cacheinfo', @$_) } @n2));
-		die "Cannot add files: $?\n" if $?;
-	}
+sub update_index (\@\@) {
+	my $old = shift;
+	my $new = shift;
+	open(my $fh, '|-', qw(git update-index -z --index-info))
+		or die "unable to open git update-index: $!";
+	print $fh
+		(map { "0 0000000000000000000000000000000000000000\t$_\0" }
+			@$old),
+		(map { '100' . sprintf('%o', $_->[0]) . " $_->[1]\t$_->[2]\0" }
+			@$new)
+		or die "unable to write to git update-index: $!";
+	close $fh
+		or die "unable to write to git update-index: $!";
+	$? and die "git update-index reported error: $?";
+}
 
-	$pid = open(C,"-|");
-	die "Cannot fork: $!" unless defined $pid;
-	unless($pid) {
-		exec("git-write-tree");
-		die "Cannot exec git-write-tree: $!\n";
-	}
-	chomp(my $tree = <C>);
-	length($tree) == 40
-		or die "Cannot get tree id ($tree): $!\n";
-	close(C)
-		or die "Error running git-write-tree: $?\n";
+sub write_tree () {
+	open(my $fh, '-|', qw(git write-tree))
+		or die "unable to open git write-tree: $!";
+	chomp(my $tree = <$fh>);
+	is_sha1($tree)
+		or die "Cannot get tree id ($tree): $!";
+	close($fh)
+		or die "Error running git write-tree: $?\n";
 	print "Tree ID $tree\n" if $opt_v;
+	return $tree;
+}
 
-	my $parent = "";
-	if(open(C,"$git_dir/refs/heads/$last_branch")) {
-		chomp($parent = <C>);
-		close(C);
-		length($parent) == 40
-			or die "Cannot get parent id ($parent): $!\n";
-		print "Parent ID $parent\n" if $opt_v;
-	}
+my ($patchset,$date,$author_name,$author_email,$branch,$ancestor,$tag,$logmsg);
+my (@old,@new,@skipped,%ignorebranch,@commit_revisions);
 
-	my $pr = IO::Pipe->new() or die "Cannot open pipe: $!\n";
-	my $pw = IO::Pipe->new() or die "Cannot open pipe: $!\n";
-	$pid = fork();
-	die "Fork: $!\n" unless defined $pid;
-	unless($pid) {
-		$pr->writer();
-		$pw->reader();
-		open(OUT,">&STDOUT");
-		dup2($pw->fileno(),0);
-		dup2($pr->fileno(),1);
-		$pr->close();
-		$pw->close();
-
-		my @par = ();
-		@par = ("-p",$parent) if $parent;
-
-		# loose detection of merges
-		# based on the commit msg
-		foreach my $rx (@mergerx) {
-			if ($logmsg =~ $rx) {
-				my $mparent = $1;
-				if ($mparent eq 'HEAD') { $mparent = $opt_o };
-				if ( -e "$git_dir/refs/heads/$mparent") {
-					$mparent = get_headref($mparent, $git_dir);
-					push @par, '-p', $mparent;
-					print OUT "Merge parent branch: $mparent\n" if $opt_v;
-				}
-			}
-		}
+# commits that cvsps cannot place anywhere...
+$ignorebranch{'#CVSPS_NO_BRANCH'} = 1;
 
-		exec("env",
-			"GIT_AUTHOR_NAME=$author_name",
-			"GIT_AUTHOR_EMAIL=$author_email",
-			"GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
-			"GIT_COMMITTER_NAME=$author_name",
-			"GIT_COMMITTER_EMAIL=$author_email",
-			"GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
-			"git-commit-tree", $tree,@par);
-		die "Cannot exec git-commit-tree: $!\n";
+sub commit {
+	if ($branch eq $opt_o && !$index{branch} &&
+		!get_headref("$remote/$branch")) {
+	    # looks like an initial commit
+	    # use the index primed by git init
+	    $ENV{GIT_INDEX_FILE} = "$git_dir/index";
+	    $index{$branch} = "$git_dir/index";
+	} else {
+	    # use an index per branch to speed up
+	    # imports of projects with many branches
+	    unless ($index{$branch}) {
+		$index{$branch} = tmpnam();
+		$ENV{GIT_INDEX_FILE} = $index{$branch};
+		if ($ancestor) {
+		    system("git", "read-tree", "$remote/$ancestor");
+		} else {
+		    system("git", "read-tree", "$remote/$branch");
+		}
+		die "read-tree failed: $?\n" if $?;
+	    }
 	}
-	$pw->writer();
-	$pr->reader();
+        $ENV{GIT_INDEX_FILE} = $index{$branch};
+
+	update_index(@old, @new);
+	@old = @new = ();
+	my $tree = write_tree();
+	my $parent = get_headref("$remote/$last_branch");
+	print "Parent ID " . ($parent ? $parent : "(empty)") . "\n" if $opt_v;
+
+	my @commit_args;
+	push @commit_args, ("-p", $parent) if $parent;
+
+	# loose detection of merges
+	# based on the commit msg
+	foreach my $rx (@mergerx) {
+		next unless $logmsg =~ $rx && $1;
+		my $mparent = $1 eq 'HEAD' ? $opt_o : $1;
+		if (my $sha1 = get_headref("$remote/$mparent")) {
+			push @commit_args, '-p', "$remote/$mparent";
+			print "Merge parent branch: $mparent\n" if $opt_v;
+		}
+	}
+
+	my $commit_date = strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date));
+	$ENV{GIT_AUTHOR_NAME} = $author_name;
+	$ENV{GIT_AUTHOR_EMAIL} = $author_email;
+	$ENV{GIT_AUTHOR_DATE} = $commit_date;
+	$ENV{GIT_COMMITTER_NAME} = $author_name;
+	$ENV{GIT_COMMITTER_EMAIL} = $author_email;
+	$ENV{GIT_COMMITTER_DATE} = $commit_date;
+	my $pid = open2(my $commit_read, my $commit_write,
+		'git', 'commit-tree', $tree, @commit_args);
 
 	# compatibility with git2cvs
 	substr($logmsg,32767) = "" if length($logmsg) > 32767;
@@ -659,84 +861,63 @@ my $commit = sub {
 	if (@skipped) {
 	    $logmsg .= "\n\n\nSKIPPED:\n\t";
 	    $logmsg .= join("\n\t", @skipped) . "\n";
+	    @skipped = ();
 	}
 
-	print $pw "$logmsg\n"
-		or die "Error writing to git-commit-tree: $!\n";
-	$pw->close();
+	print($commit_write "$logmsg\n") && close($commit_write)
+		or die "Error writing to git commit-tree: $!\n";
 
-	print "Committed patch $patchset ($branch ".strftime("%Y-%m-%d %H:%M:%S",gmtime($date)).")\n" if $opt_v;
-	chomp(my $cid = <$pr>);
-	length($cid) == 40
-		or die "Cannot get commit id ($cid): $!\n";
+	print "Committed patch $patchset ($branch $commit_date)\n" if $opt_v;
+	chomp(my $cid = <$commit_read>);
+	is_sha1($cid) or die "Cannot get commit id ($cid): $!\n";
 	print "Commit ID $cid\n" if $opt_v;
-	$pr->close();
+	close($commit_read);
 
 	waitpid($pid,0);
-	die "Error running git-commit-tree: $?\n" if $?;
+	die "Error running git commit-tree: $?\n" if $?;
 
-	open(C,">$git_dir/refs/heads/$branch")
-		or die "Cannot open branch $branch for update: $!\n";
-	print C "$cid\n"
-		or die "Cannot write branch $branch for update: $!\n";
-	close(C)
+	system('git' , 'update-ref', "$remote/$branch", $cid) == 0
 		or die "Cannot write branch $branch for update: $!\n";
 
-	if($tag) {
-		my($in, $out) = ('','');
-	        my($xtag) = $tag;
+	if ($revision_map) {
+		print $revision_map "@$_ $cid\n" for @commit_revisions;
+	}
+	@commit_revisions = ();
+
+	if ($tag) {
+	        my ($xtag) = $tag;
 		$xtag =~ s/\s+\*\*.*$//; # Remove stuff like ** INVALID ** and ** FUNKY **
 		$xtag =~ tr/_/\./ if ( $opt_u );
 		$xtag =~ s/[\/]/$opt_s/g;
-		
-		my $pid = open2($in, $out, 'git-mktag');
-		print $out "object $cid\n".
-		    "type commit\n".
-		    "tag $xtag\n".
-		    "tagger $author_name <$author_email>\n"
-		    or die "Cannot create tag object $xtag: $!\n";
-		close($out)
-		    or die "Cannot create tag object $xtag: $!\n";
-
-		my $tagobj = <$in>;
-		chomp $tagobj;
-
-		if ( !close($in) or waitpid($pid, 0) != $pid or
-		     $? != 0 or $tagobj !~ /^[0123456789abcdef]{40}$/ ) {
-		    die "Cannot create tag object $xtag: $!\n";
-	        }
-		
-
-		open(C,">$git_dir/refs/tags/$xtag")
+		$xtag =~ s/\[//g;
+
+		system('git' , 'tag', '-f', $xtag, $cid) == 0
 			or die "Cannot create tag $xtag: $!\n";
-		print C "$tagobj\n"
-			or die "Cannot write tag $xtag: $!\n";
-		close(C)
-			or die "Cannot write tag $xtag: $!\n";
 
 		print "Created tag '$xtag' on '$branch'\n" if $opt_v;
 	}
 };
 
-while(<CVS>) {
+my $commitcount = 1;
+while (<CVS>) {
 	chomp;
-	if($state == 0 and /^-+$/) {
+	if ($state == 0 and /^-+$/) {
 		$state = 1;
-	} elsif($state == 0) {
+	} elsif ($state == 0) {
 		$state = 1;
 		redo;
-	} elsif(($state==0 or $state==1) and s/^PatchSet\s+//) {
+	} elsif (($state==0 or $state==1) and s/^PatchSet\s+//) {
 		$patchset = 0+$_;
 		$state=2;
-	} elsif($state == 2 and s/^Date:\s+//) {
+	} elsif ($state == 2 and s/^Date:\s+//) {
 		$date = pdate($_);
-		unless($date) {
+		unless ($date) {
 			print STDERR "Could not parse date: $_\n";
 			$state=0;
 			next;
 		}
 		$state=3;
-	} elsif($state == 3 and s/^Author:\s+//) {
+	} elsif ($state == 3 and s/^Author:\s+//) {
 		s/\s+$//;
 		if (/^(.*?)\s+<(.*)>/) {
 		    ($author_name, $author_email) = ($1, $2);
@@ -747,72 +928,86 @@ while(<CVS>) {
 		    $author_name = $author_email = $_;
 		}
 		$state = 4;
-	} elsif($state == 4 and s/^Branch:\s+//) {
+	} elsif ($state == 4 and s/^Branch:\s+//) {
 		s/\s+$//;
+		tr/_/\./ if ( $opt_u );
 		s/[\/]/$opt_s/g;
 		$branch = $_;
 		$state = 5;
-	} elsif($state == 5 and s/^Ancestor branch:\s+//) {
+	} elsif ($state == 5 and s/^Ancestor branch:\s+//) {
 		s/\s+$//;
 		$ancestor = $_;
 		$ancestor = $opt_o if $ancestor eq "HEAD";
 		$state = 6;
-	} elsif($state == 5) {
+	} elsif ($state == 5) {
 		$ancestor = undef;
 		$state = 6;
 		redo;
-	} elsif($state == 6 and s/^Tag:\s+//) {
+	} elsif ($state == 6 and s/^Tag:\s+//) {
 		s/\s+$//;
-		if($_ eq "(none)") {
+		if ($_ eq "(none)") {
 			$tag = undef;
 		} else {
 			$tag = $_;
 		}
 		$state = 7;
-	} elsif($state == 7 and /^Log:/) {
+	} elsif ($state == 7 and /^Log:/) {
 		$logmsg = "";
 		$state = 8;
-	} elsif($state == 8 and /^Members:/) {
+	} elsif ($state == 8 and /^Members:/) {
 		$branch = $opt_o if $branch eq "HEAD";
-		if(defined $branch_date{$branch} and $branch_date{$branch} >= $date) {
+		if (defined $branch_date{$branch} and $branch_date{$branch} >= $date) {
 			# skip
 			print "skip patchset $patchset: $date before $branch_date{$branch}\n" if $opt_v;
 			$state = 11;
 			next;
 		}
-		if($ancestor) {
-			if(-f "$git_dir/refs/heads/$branch") {
+		if (!$opt_a && $starttime - 300 - (defined $opt_z ? $opt_z : 300) <= $date) {
+			# skip if the commit is too recent
+			# given that the cvsps default fuzz is 300s, we give ourselves another
+			# 300s just in case -- this also prevents skipping commits
+			# due to server clock drift
+			print "skip patchset $patchset: $date too recent\n" if $opt_v;
+			$state = 11;
+			next;
+		}
+		if (exists $ignorebranch{$branch}) {
+			print STDERR "Skipping $branch\n";
+			$state = 11;
+			next;
+		}
+		if ($ancestor) {
+			if ($ancestor eq $branch) {
+				print STDERR "Branch $branch erroneously stems from itself -- changed ancestor to $opt_o\n";
+				$ancestor = $opt_o;
+			}
+			if (defined get_headref("$remote/$branch")) {
 				print STDERR "Branch $branch already exists!\n";
 				$state=11;
 				next;
 			}
-			unless(open(H,"$git_dir/refs/heads/$ancestor")) {
+			my $id = get_headref("$remote/$ancestor");
+			if (!$id) {
 				print STDERR "Branch $ancestor does not exist!\n";
+				$ignorebranch{$branch} = 1;
 				$state=11;
 				next;
 			}
-			chomp(my $id = <H>);
-			close(H);
-			unless(open(H,"> $git_dir/refs/heads/$branch")) {
-				print STDERR "Could not create branch $branch: $!\n";
+
+			system(qw(git update-ref -m cvsimport),
+				"$remote/$branch", $id);
+			if($? != 0) {
+				print STDERR "Could not create branch $branch\n";
+				$ignorebranch{$branch} = 1;
 				$state=11;
 				next;
 			}
-			print H "$id\n"
-				or die "Could not write branch $branch: $!";
-			close(H)
-				or die "Could not write branch $branch: $!";
-		}
-		if(($ancestor || $branch) ne $last_branch) {
-			print "Switching from $last_branch to $branch\n" if $opt_v;
-			system("git-read-tree", $branch);
-			die "read-tree failed: $?\n" if $?;
 		}
 		$last_branch = $branch if $branch ne $last_branch;
 		$state = 9;
-	} elsif($state == 8) {
+	} elsif ($state == 8) {
 		$logmsg .= "$_\n";
-	} elsif($state == 9 and /^\s+(.+?):(INITIAL|\d+(?:\.\d+)+)->(\d+(?:\.\d+)+)\s*$/) {
+	} elsif ($state == 9 and /^\s+(.+?):(INITIAL|\d+(?:\.\d+)+)->(\d+(?:\.\d+)+)\s*$/) {
 #	VERSION:1.96->1.96.2.1
 		my $init = ($2 eq "INITIAL");
 		my $fn = $1;
@@ -823,9 +1018,10 @@ while(<CVS>) {
 		    push(@skipped, $fn);
 		    next;
 		}
+		push @commit_revisions, [$fn, $rev];
 		print "Fetching $fn   v $rev\n" if $opt_v;
 		my ($tmpname, $size) = $cvs->file($fn,$rev);
-		if($size == -1) {
+		if ($size == -1) {
 			push(@old,$fn);
 			print "Drop $fn\n" if $opt_v;
 		} else {
@@ -833,7 +1029,7 @@ while(<CVS>) {
 			my $pid = open(my $F, '-|');
 			die $! unless defined $pid;
 			if (!$pid) {
-			    exec("git-hash-object", "-w", $tmpname)
+			    exec("git", "hash-object", "-w", $tmpname)
 				or die "Cannot create object: $!\n";
 			}
 			my $sha = <$F>;
@@ -843,27 +1039,54 @@ while(<CVS>) {
 			push(@new,[$mode, $sha, $fn]); # may be resurrected!
 		}
 		unlink($tmpname);
-	} elsif($state == 9 and /^\s+(.+?):\d+(?:\.\d+)+->(\d+(?:\.\d+)+)\(DEAD\)\s*$/) {
+	} elsif ($state == 9 and /^\s+(.+?):\d+(?:\.\d+)+->(\d+(?:\.\d+)+)\(DEAD\)\s*$/) {
 		my $fn = $1;
+		my $rev = $2;
 		$fn =~ s#^/+##;
+		push @commit_revisions, [$fn, $rev];
 		push(@old,$fn);
 		print "Delete $fn\n" if $opt_v;
-	} elsif($state == 9 and /^\s*$/) {
+	} elsif ($state == 9 and /^\s*$/) {
 		$state = 10;
-	} elsif(($state == 9 or $state == 10) and /^-+$/) {
-		&$commit();
+	} elsif (($state == 9 or $state == 10) and /^-+$/) {
+		$commitcount++;
+		if ($opt_L && $commitcount > $opt_L) {
+			last;
+		}
+		commit();
+		if (($commitcount & 1023) == 0) {
+			system(qw(git repack -a -d));
+		}
 		$state = 1;
-	} elsif($state == 11 and /^-+$/) {
+	} elsif ($state == 11 and /^-+$/) {
 		$state = 1;
-	} elsif(/^-+$/) { # end of unknown-line processing
+	} elsif (/^-+$/) { # end of unknown-line processing
 		$state = 1;
-	} elsif($state != 11) { # ignore stuff when skipping
-		print "* UNKNOWN LINE * $_\n";
+	} elsif ($state != 11) { # ignore stuff when skipping
+		print STDERR "* UNKNOWN LINE * $_\n";
 	}
 }
-&$commit() if $branch and $state != 11;
+commit() if $branch and $state != 11;
 
-unlink($git_index);
+unless ($opt_P) {
+	unlink($cvspsfile);
+}
+
+# The heuristic of repacking every 1024 commits can leave a
+# lot of unpacked data.  If there is more than 1MB worth of
+# not-packed objects, repack once more.
+my $line = `git count-objects`;
+if ($line =~ /^(\d+) objects, (\d+) kilobytes$/) {
+  my ($n_objects, $kb) = ($1, $2);
+  1024 < $kb
+    and system(qw(git repack -a -d));
+}
+
+foreach my $git_index (values %index) {
+    if ($git_index ne "$git_dir/index") {
+	unlink($git_index);
+    }
+}
 
 if (defined $orig_git_index) {
 	$ENV{GIT_INDEX_FILE} = $orig_git_index;
@@ -872,16 +1095,33 @@ if (defined $orig_git_index) {
 }
 
 # Now switch back to the branch we were in before all of this happened
-if($orig_branch) {
-	print "DONE; you may need to merge manually.\n" if $opt_v;
+if ($orig_branch) {
+	print "DONE.\n" if $opt_v;
+	if ($opt_i) {
+		exit 0;
+	}
+	my $tip_at_end = `git rev-parse --verify HEAD`;
+	if ($tip_at_start ne $tip_at_end) {
+		for ($tip_at_start, $tip_at_end) { chomp; }
+		print "Fetched into the current branch.\n" if $opt_v;
+		system(qw(git read-tree -u -m),
+		       $tip_at_start, $tip_at_end);
+		die "Fast-forward update failed: $?\n" if $?;
+	}
+	else {
+		system(qw(git merge cvsimport HEAD), "$remote/$opt_o");
+		die "Could not merge $opt_o into the current branch.\n" if $?;
+	}
 } else {
 	$orig_branch = "master";
 	print "DONE; creating $orig_branch branch\n" if $opt_v;
-	system("git-update-ref", "refs/heads/master", "refs/heads/$opt_o")
-		unless -f "$git_dir/refs/heads/master";
-	system('git-update-ref', 'HEAD', "$orig_branch");
+	system("git", "update-ref", "refs/heads/master", "$remote/$opt_o")
+		unless defined get_headref('refs/heads/master');
+	system("git", "symbolic-ref", "$remote/HEAD", "$remote/$opt_o")
+		if ($opt_r && $opt_o ne 'HEAD');
+	system('git', 'update-ref', 'HEAD', "$orig_branch");
 	unless ($opt_i) {
-		system('git checkout');
+		system(qw(git checkout -f));
 		die "checkout failed: $?\n" if $?;
 	}
 }