X-Git-Url: https://git.madduck.net/code/myrepos.git/blobdiff_plain/d11b6a1b817dbbd24774f158de8e4351b82bfae0..1a39ef5c9ad9caeb10b41cc046a980b6cd55c454:/mr?ds=sidebyside

diff --git a/mr b/mr
index 1253102..94e9720 100755
--- a/mr
+++ b/mr
@@ -1,7 +1,5 @@
 #!/usr/bin/perl
 
-#man{{{
-
 =head1 NAME
 
 mr - a Multiple Repository management tool
@@ -16,21 +14,29 @@ B<mr> [options] status
 
 B<mr> [options] commit [-m "message"]
 
+B<mr> [options] record [-m "message"]
+
 B<mr> [options] diff
 
 B<mr> [options] log
 
+B<mr> [options] bootstrap url
+
 B<mr> [options] register [repository]
 
 B<mr> [options] config section ["parameter=[value]" ...]
 
 B<mr> [options] action [params ...]
 
+B<mr> [options] [online|offline]
+
+B<mr> [options] remember action [params ...]
+
 =head1 DESCRIPTION
 
 B<mr> is a Multiple Repository management tool. It can checkout, update, or
 perform other actions on a set of repositories as if they were one combined
-respository. It supports any combination of subversion, git, cvs, mecurial,
+repository. It supports any combination of subversion, git, cvs, mecurial,
 bzr and darcs repositories, and support for other revision control systems can
 easily be added.
 
@@ -39,6 +45,10 @@ working directory. Or, if you are in a subdirectory of a repository that
 contains no other registered repositories, it will stay in that directory,
 and work on only that repository,
 
+B<mr> is configured by .mrconfig files, which list the repositories. It
+starts by reading the .mrconfig file in your home directory, and this can
+in turn chain load .mrconfig files from repositories.
+
 These predefined commands should be fairly familiar to users of any revision
 control system:
 
@@ -62,10 +72,24 @@ uncommitted changes are present in the repository.
 =item commit (or ci)
 
 Commits changes to each repository. (By default, changes are pushed to the
-remote repository too, when using distributed systems like git.)
+remote repository too, when using distributed systems like git. If you
+don't like this default, you can change it in your .mrconfig, or use record
+instead.)
 
 The optional -m parameter allows specifying a commit message.
 
+=item record
+
+Records changes to the local repository, but does not push them to the
+remote repository. Only supported for distributed revision control systems.
+
+The optional -m parameter allows specifying a commit message.
+
+=item push
+
+Pushes committed local changes to the remote repository. A no-op for
+centralized revision control systems.
+
 =item diff
 
 Show a diff of uncommitted changes.
@@ -80,6 +104,11 @@ These commands are also available:
 
 =over 4
 
+=item bootstrap url
+
+Causes mr to download the url, save it to a .mrconfig file in the
+current directory, and then check out all repositories listed in it.
+
 =item list (or ls)
 
 List the repositories that mr will act on.
@@ -115,14 +144,32 @@ To see the built-in library of shell functions contained in mr:
 The ~/.mrconfig file is used by default. To use a different config file,
 use the -c option.
 
+=item offline
+
+Advises mr that it is in offline mode. Any commands that fail in
+offline mode will be remembered, and retried when mr is told it's online.
+
+=item online
+
+Advices mr that it is in online mode again. Commands that failed while in
+offline mode will be re-run.
+
+=item remember
+
+Remember a command, to be run later when mr re-enters online mode. This
+implicitly puts mr into offline mode. The command can be any regular mr
+command. This is useful when you know that a command will fail due to being
+offline, and so don't want to run it right now at all, but just remember
+to run it when you go back online.
+
 =item help
 
 Displays this help.
 
 =back
 
-Actions can be abbreviated to any unambiguous subsctring, so
-"mr st" is equivilant to "mr status", and "mr up" is equivilant to "mr
+Actions can be abbreviated to any unambiguous substring, so
+"mr st" is equivalent to "mr status", and "mr up" is equivalent to "mr
 update"
 
 Additional parameters can be passed to most commands, and are passed on
@@ -136,40 +183,84 @@ system.
 
 =item -d directory
 
+=item --directory directory
+
 Specifies the topmost directory that B<mr> should work in. The default is
 the current working directory.
 
 =item -c mrconfig
 
+=item --config mrconfig
+
 Use the specified mrconfig file. The default is B<~/.mrconfig>
 
+=item -p
+
+=item --path
+
+Search in the current directory, and its parent directories and use
+the first B<.mrconfig> found, instead of the default B<~/.mrconfig>.
+
 =item -v
 
+=item --verbose
+
 Be verbose.
 
+=item -q
+
+=item --quiet
+
+Be quiet.
+
 =item -s
 
+=item --stats
+
 Expand the statistics line displayed at the end to include information
 about exactly which repositories failed and were skipped, if any.
 
-=item -n
+=item -i
 
-Just operate on the repository for the current directory, do not 
-recurse into deeper repositories.
+=item --interactive
 
-=item -j number
+Interactive mode. If a repository fails to be processed, a subshell will be
+started which you can use to resolve or investigate the problem. Exit the
+subshell to continue the mr run.
 
-Run the specified number of jobs in parallel. This can greatly speed up
-operations such as updates. It is not recommended for interactive
-operations.
+=item -n [number]
 
-=back
+=item --no-recurse [number]
+
+If no number if specified, just operate on the repository for the current
+directory, do not recurse into deeper repositories.
+
+If a number is specified, will recurse into repositories at most that many
+subdirectories deep. For example, with -n 2 it would recurse into ./src/foo,
+but not ./src/packages/bar.
 
-=head1 FILES
+=item -j [number]
 
-B<mr> is configured by .mrconfig files. It starts by reading the .mrconfig
-file in your home directory, and this can in turn chain load .mrconfig files
-from repositories.
+=item --jobs [number]
+
+Run the specified number of jobs in parallel, or an unlimited number of jobs
+with no number specified. This can greatly speed up operations such as updates.
+It is not recommended for interactive operations.
+
+Note that running more than 10 jobs at a time is likely to run afoul of
+ssh connection limits. Running between 3 and 5 jobs at a time will yield
+a good speedup in updates without loading the machine too much.
+
+=item -t
+
+=item --trust-all
+
+Trust all mrconfig files even if they are not listed in ~/.mrtrust.
+Use with caution.
+
+=back
+
+=head1 "MRCONFIG FILES"
 
 Here is an example .mrconfig file:
 
@@ -195,7 +286,9 @@ is an alias, and its value is the action to use.
 All other sections add repositories. The section header specifies the
 directory where the repository is located. This is relative to the directory
 that contains the mrconfig file, but you can also choose to use absolute
-paths.
+paths. (Note that you can use environment variables in section names; they
+will be passed through the shell for expansion. For example, 
+"[$HOSTNAME]", or "[${HOSTNAME}foo]")
 
 Within a section, each parameter defines a shell command to run to handle a
 given action. mr contains default handlers for "update", "status",
@@ -209,7 +302,11 @@ directory, since the repository isn't checked out yet. All other commands
 are run inside the repository, though not necessarily at the top of it.
 
 The "MR_REPO" environment variable is set to the path to the top of the
-repository. The "MR_CONFIG" environment variable is set to the .mrconfig file
+repository. (For the "register" action, "MR_REPO" is instead set to the 
+basename of the directory that should be created when checking the
+repository out.)
+
+The "MR_CONFIG" environment variable is set to the .mrconfig file
 that defines the repo being acted on, or, if the repo is not yet in a config
 file, the .mrconfig file that should be modified to register the repo.
 
@@ -228,7 +325,7 @@ mr is run by joey. The second uses the hours_since function
 (included in mr's built-in library) to skip updating the repo unless it's
 been at least 12 hours since the last update.
 
-  skip = test $(whoami) != joey
+  skip = test `whoami` != joey
   skip = [ "$1" = update ] && ! hours_since "$1" 12
 
 =item order
@@ -244,8 +341,16 @@ repository, ordering it to be processed earlier is not recommended.
 =item chain
 
 If the "chain" parameter is set and its command returns true, then B<mr>
-will try to load a .mrconfig file from the root of the repository. (You
-should avoid chaining from repositories with untrusted committers.)
+will try to load a .mrconfig file from the root of the repository.
+
+=item include
+
+If the "include" parameter is set, its command is ran, and should output
+additional mrconfig file content. The content is included as if it were
+part of the including file.
+
+Unlike all other parameters, this parameter does not need to be placed
+within a section.
 
 =item lib
 
@@ -255,9 +360,48 @@ to use.
 
 =back
 
+When looking for a command to run for a given action, mr first looks for
+a parameter with the same name as the action. If that is not found, it
+looks for a parameter named "rcs_action" (substituting in the name of the
+revision control system and the action). The name of the revision control
+system is itself determined by running each defined "rcs_test" action,
+until one succeeds.
+
+Internally, mr has settings for "git_update", "svn_update", etc. To change
+the action that is performed for a given revision control system, you can
+override these rcs specific actions. To add a new revision control system,
+you can just add rcs specific actions for it.
+
+The ~/.mrlog file contains commands that mr has remembered to run later,
+due to being offline. You can delete or edit this file to remove commands,
+or even to add other commands for 'mr online' to run. If the file is
+present, mr assumes it is in offline mode.
+
+=head "UNTRUSTED MRCONFIG FILES"
+
+Since mrconfig files can contain arbitrary shell commands, they can do
+anything. This flexability is good, but it also allows a malicious mrconfig
+file to delete your whole home directory. Such a file might be contained
+inside a repository that your main ~/.mrconfig checks out and chains to. To
+avoid worries about evil commands in a mrconfig file, mr
+has the ability to read mrconfig files in untrusted mode. Such files are
+limited to running only known safe commands (like "git clone") in a
+carefully checked manner.
+
+By default, mr trusts all mrconfig files. (This default will change in a
+future release!) But if you have a ~/.mrtrust file, mr will only trust
+mrconfig files that are listed within it. (One file per line.) All other
+files will be treated as untrusted.
+
+=head1 EXTENSIONS
+
+mr can be extended to support things such as unison and git-svn. Some
+files providing such extensions are available in /usr/share/mr/. See
+the documentation in the files for details about using them.
+
 =head1 AUTHOR
 
-Copyright 2007 Joey Hess <joey@kitenet.net>
+Copyright 2007-2009 Joey Hess <joey@kitenet.net>
 
 Licensed under the GNU GPL version 2 or higher.
 
@@ -265,13 +409,12 @@ http://kitenet.net/~joey/code/mr/
 
 =cut
 
-#}}}
-
 use warnings;
 use strict;
 use Getopt::Long;
 use Cwd qw(getcwd abs_path);
-use POSIX "WNOHANG";
+
+# things that can happen when mr runs a command
 use constant {
 	OK => 0,
 	FAILED => 1,
@@ -279,259 +422,118 @@ use constant {
 	ABORT => 3,
 };
 
-$SIG{INT}=sub {
-	print STDERR "mr: interrupted\n";
-	exit 2;
-};
-
-$ENV{MR_CONFIG}="$ENV{HOME}/.mrconfig";
+# configurables
 my $config_overridden=0;
 my $verbose=0;
+my $quiet=0;
 my $stats=0;
-my $no_recurse=0;
+my $interactive=0;
+my $max_depth;
+my $no_chdir=0;
 my $jobs=1;
+my $trust_all=0;
+my $directory=getcwd();
+$ENV{MR_CONFIG}="$ENV{HOME}/.mrconfig";
+
+# globals :-(
 my %config;
 my %configfiles;
 my %knownactions;
 my %alias;
-my $directory=getcwd();
-
-Getopt::Long::Configure("no_permute");
-my $result=GetOptions(
-	"d|directory=s" => sub { $directory=abs_path($_[1]) },
-	"c|config=s" => sub { $ENV{MR_CONFIG}=$_[1]; $config_overridden=1 },
-	"v|verbose" => \$verbose,
-	"s|stats" => \$stats,
-	"n|no-recurse" => \$no_recurse,
-	"j|jobs=i" => \$jobs,
-);
-if (! $result || @ARGV < 1) {
-	die("Usage: mr [-d directory] action [params ...]\n".
-	    "(Use mr help for man page.)\n");
-
-}
-if (! defined $directory) {
-	die("mr: failed to determine working directory\n");
-}
+my (@ok, @failed, @skipped);
 
-# Make sure MR_CONFIG is an absolute path, but don't use abs_path since
-# the config file might be a symlink to elsewhere, and the directory it's
-# in is significant.
-if ($ENV{MR_CONFIG} !~ /^\//) {
-	$ENV{MR_CONFIG}=getcwd()."/".$ENV{MR_CONFIG};
-}
-# Try to set MR_PATH to the path to the program.
-eval {
-	use FindBin qw($Bin $Script);
-	$ENV{MR_PATH}=$Bin."/".$Script;
-};
+main();
 
-loadconfig(\*DATA);
-loadconfig($ENV{MR_CONFIG});
-#use Data::Dumper;
-#print Dumper(\%config);
+my %rcs;
+sub rcs_test {
+	my ($action, $dir, $topdir, $subdir) = @_;
 
-# alias expansion and command stemming
-my $action=shift @ARGV;
-if (exists $alias{$action}) {
-	$action=$alias{$action};
-}
-if (! exists $knownactions{$action}) {
-	my @matches = grep { /^\Q$action\E/ }
-		keys %knownactions, keys %alias;
-	if (@matches == 1) {
-		$action=$matches[0];
-	}
-	elsif (@matches == 0) {
-		die "mr: unknown action \"$action\" (known actions: ".
-			join(", ", sort keys %knownactions).")\n";
-	}
-	else {
-		die "mr: ambiguous action \"$action\" (matches: ".
-			join(", ", @matches).")\n";
+	if (exists $rcs{$dir}) {
+		return $rcs{$dir};
 	}
-}
 
-# commands that do not operate on all repos
-if ($action eq 'help') {
-	exec($config{''}{DEFAULT}{$action}) || die "exec: $!";
-}
-elsif ($action eq 'config') {
-	if (@ARGV < 2) {
-		die "mr config: not enough parameters\n";
+	my $test="set -e\n";
+	foreach my $rcs_test (
+			sort {
+				length $a <=> length $b 
+				          ||
+				       $a cmp $b
+			} grep { /_test$/ } keys %{$config{$topdir}{$subdir}}) {
+		my ($rcs)=$rcs_test=~/(.*)_test/;
+		$test="my_$rcs_test() {\n$config{$topdir}{$subdir}{$rcs_test}\n}\n".$test;
+		$test.="if my_$rcs_test; then echo $rcs; fi\n";
 	}
-	my $section=shift;
-	if ($section=~/^\//) {
-		# try to convert to a path relative to the config file
-		my ($dir)=$ENV{MR_CONFIG}=~/^(.*\/)[^\/]+$/;
-		$dir=abs_path($dir);
-		$dir.="/" unless $dir=~/\/$/;
-		if ($section=~/^\Q$dir\E(.*)/) {
-			$section=$1;
-		}
+	$test=$config{$topdir}{$subdir}{lib}."\n".$test
+		if exists $config{$topdir}{$subdir}{lib};
+	
+	print "mr $action: running rcs test >>$test<<\n" if $verbose;
+	my $rcs=`$test`;
+	chomp $rcs;
+	if ($rcs=~/\n/s) {
+		$rcs=~s/\n/, /g;
+		print STDERR "mr $action: found multiple possible repository types ($rcs) for $topdir$subdir\n";
+		return undef;
 	}
-	my %changefields;
-	foreach (@ARGV) {
-		if (/^([^=]+)=(.*)$/) {
-			$changefields{$1}=$2;
-		}
-		else {
-			my $found=0;
-			foreach my $topdir (sort keys %config) {
-				if (exists $config{$topdir}{$section} &&
-				    exists $config{$topdir}{$section}{$_}) {
-					print $config{$topdir}{$section}{$_}."\n";
-					$found=1;
-					last if $section eq 'DEFAULT';
-				}
-			}
-			if (! $found) {
-				die "mr $action: $section $_ not set\n";
-			}
-		}
+	if (! length $rcs) {
+		return $rcs{$dir}=undef;
 	}
-	modifyconfig($ENV{MR_CONFIG}, $section, %changefields) if %changefields;
-	exit 0;
-}
-elsif ($action eq 'register') {
-	if (! $config_overridden) {
-		# Find the closest known mrconfig file to the current
-		# directory.
-		$directory.="/" unless $directory=~/\/$/;
-		foreach my $topdir (reverse sort keys %config) {
-			next unless length $topdir;
-			if ($directory=~/^\Q$topdir\E/) {
-				$ENV{MR_CONFIG}=$configfiles{$topdir};
-				last;
-			}
-		}
+	else {
+		return $rcs{$dir}=$rcs;
 	}
-	my $command="set -e; ".$config{''}{DEFAULT}{lib}."\n".
-		"my_action(){ $config{''}{DEFAULT}{$action}\n }; my_action ".
-		join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
-	print STDERR "mr $action: running >>$command<<\n" if $verbose;
-	exec($command) || die "exec: $!";
 }
-
-# an ordered list of repos
-my @list;
-foreach my $topdir (sort keys %config) {
-	foreach my $subdir (sort keys %{$config{$topdir}}) {
-		push @list, {
-			topdir => $topdir,
-			subdir => $subdir,
-			order => $config{$topdir}{$subdir}{order},
-		};
+	
+sub findcommand {
+	my ($action, $dir, $topdir, $subdir, $is_checkout) = @_;
+	
+	if (exists $config{$topdir}{$subdir}{$action}) {
+		return $config{$topdir}{$subdir}{$action};
 	}
-}
-@list = sort {
-		$a->{order}  <=> $b->{order}
-		             ||
-		$a->{topdir} cmp $b->{topdir}
-		             ||
-		$a->{subdir} cmp $b->{subdir}
-	} @list;
 
-# work out what repos to act on
-my @repos;
-my $nochdir=0;
-foreach my $repo (@list) {
-	my $topdir=$repo->{topdir};
-	my $subdir=$repo->{subdir};
-
-	next if $subdir eq 'DEFAULT';
-	my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
-	my $d=$directory;
-	$dir.="/" unless $dir=~/\/$/;
-	$d.="/" unless $d=~/\/$/;
-	next if $no_recurse && $d ne $dir;
-	next if $dir ne $d && $dir !~ /^\Q$d\E/;
-	push @repos, [$dir, $topdir, $subdir];
-}
-if (! @repos) {
-	# fallback to find a leaf repo
-	foreach my $repo (reverse @list) {
-		my $topdir=$repo->{topdir};
-		my $subdir=$repo->{subdir};
-		
-		next if $subdir eq 'DEFAULT';
-		my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
-		my $d=$directory;
-		$dir.="/" unless $dir=~/\/$/;
-		$d.="/" unless $d=~/\/$/;
-		if ($d=~/^\Q$dir\E/) {
-			push @repos, [$dir, $topdir, $subdir];
-			last;
-		}
+	if ($is_checkout) {
+		return undef;
 	}
-	$nochdir=1;
-}
 
-# run the action on each repository and print stats
-my (@ok, @failed, @skipped);
-if ($jobs > 1) {
-	mrs(@repos);
-}
-else {
-	foreach my $repo (@repos) {
-		record($repo, action($action, @$repo));
-	}
-}
-if (! @ok && ! @failed && ! @skipped) {
-	die "mr $action: no repositories found to work on\n";
-}
-print "mr $action: finished (".join("; ",
-	showstat($#ok+1, "ok", "ok"),
-	showstat($#failed+1, "failed", "failed"),
-	showstat($#skipped+1, "skipped", "skipped"),
-).")\n";
-if ($stats) {
-	if (@skipped) {
-		print "mr $action: (skipped: ".join(" ", @skipped).")\n";
+	my $rcs=rcs_test(@_);
+
+	if (defined $rcs && 
+	    exists $config{$topdir}{$subdir}{$rcs."_".$action}) {
+		return $config{$topdir}{$subdir}{$rcs."_".$action};
 	}
-	if (@failed) {
-		print STDERR "mr $action: (failed: ".join(" ", @failed).")\n";
+	else {
+		return undef;
 	}
 }
-if (@failed) {
-	exit 1;
-}
-elsif (! @ok && @skipped) {
-	exit 1;
-}
-exit 0;
 
-sub action { #{{{
+sub action {
 	my ($action, $dir, $topdir, $subdir) = @_;
-
+	
 	$ENV{MR_CONFIG}=$configfiles{$topdir};
 	my $lib=exists $config{$topdir}{$subdir}{lib} ?
 	               $config{$topdir}{$subdir}{lib}."\n" : "";
+	my $is_checkout=($action eq 'checkout');
 
-	if ($action eq 'checkout') {
+	$ENV{MR_REPO}=$dir;
+
+	if ($is_checkout) {
 		if (-d $dir) {
 			print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
 			return SKIPPED;
 		}
 
 		$dir=~s/^(.*)\/[^\/]+\/?$/$1/;
-
-		if (! -d $dir) {
-			print "mr $action: creating parent directory $dir\n" if $verbose;
-			system("mkdir", "-p", $dir);
-		}
 	}
 	elsif ($action =~ /update/) {
 		if (! -d $dir) {
 			return action("checkout", $dir, $topdir, $subdir);
 		}
 	}
-	
-	$ENV{MR_REPO}=$dir;
 
-	if (exists $config{$topdir}{$subdir}{skip}) {
+	my $skiptest=findcommand("skip", $dir, $topdir, $subdir, $is_checkout);
+	my $command=findcommand($action, $dir, $topdir, $subdir, $is_checkout);
+
+	if (defined $skiptest) {
 		my $test="set -e;".$lib.
-			"my_action(){ $config{$topdir}{$subdir}{skip}\n }; my_action '$action'";
+			"my_action(){ $skiptest\n }; my_action '$action'";
 		print "mr $action: running skip test >>$test<<\n" if $verbose;
 		my $ret=system($test);
 		if ($ret != 0) {
@@ -549,28 +551,40 @@ sub action { #{{{
 			return SKIPPED;
 		}
 	}
-	
-	if (! $nochdir && ! chdir($dir)) {
+
+	if ($is_checkout && ! -d $dir) {
+		print "mr $action: creating parent directory $dir\n" if $verbose;
+		system("mkdir", "-p", $dir);
+	}
+
+	if (! $no_chdir && ! chdir($dir)) {
 		print STDERR "mr $action: failed to chdir to $dir: $!\n";
 		return FAILED;
 	}
-	elsif (! exists $config{$topdir}{$subdir}{$action}) {
-		print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
-		return SKIPPED;
+	elsif (! defined $command) {
+		my $rcs=rcs_test(@_);
+		if (! defined $rcs) {
+			print STDERR "mr $action: unknown repository type and no defined $action command for $topdir$subdir\n";
+			return FAILED;
+		}
+		else {
+			print STDERR "mr $action: no defined action for $rcs repository $topdir$subdir, skipping\n";
+			return SKIPPED;
+		}
 	}
 	else {
-		if (! $nochdir) {
-			print "mr $action: $topdir$subdir\n";
+		if (! $no_chdir) {
+			print "mr $action: $topdir$subdir\n" unless $quiet;
 		}
 		else {
 			my $s=$directory;
 			$s=~s/^\Q$topdir$subdir\E\/?//;
-			print "mr $action: $topdir$subdir (in subdir $s)\n";
+			print "mr $action: $topdir$subdir (in subdir $s)\n" unless $quiet;
 		}
-		my $command="set -e; ".$lib.
-			"my_action(){ $config{$topdir}{$subdir}{$action}\n }; my_action ".
+		$command="set -e; ".$lib.
+			"my_action(){ $command\n }; my_action ".
 			join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
-		print STDERR "mr $action: running >>$command<<\n" if $verbose;
+		print "mr $action: running >>$command<<\n" if $verbose;
 		my $ret=system($command);
 		if ($ret != 0) {
 			if (($? & 127) == 2) {
@@ -584,6 +598,14 @@ sub action { #{{{
 			print STDERR "mr $action: failed ($ret)\n" if $verbose;
 			if ($ret >> 8 != 0) {
 				print STDERR "mr $action: command failed\n";
+				if (-e "$ENV{HOME}/.mrlog" && $action ne 'remember') {
+					# recreate original command line to
+					# remember, and avoid recursing
+					my @orig=@ARGV;
+					@ARGV=('-n', $action, @orig);
+					action("remember", $dir, $topdir, $subdir);
+					@ARGV=@orig;
+				}
 			}
 			elsif ($ret != 0) {
 				print STDERR "mr $action: command died ($ret)\n";
@@ -599,17 +621,20 @@ sub action { #{{{
 			return OK;
 		}
 	}
-} #}}}
+}
 
 # run actions on multiple repos, in parallel
-sub mrs { #{{{
+sub mrs {
+	my $action=shift;
+	my @repos=@_;
+
 	$| = 1;
 	my @active;
 	my @fhs;
 	my @out;
 	my $running=0;
 	while (@fhs or @repos) {
-		while ($running < $jobs && @repos) {
+		while ((!$jobs || $running < $jobs) && @repos) {
 			$running++;
 			my $repo = shift @repos;
 			pipe(my $outfh, CHILD_STDOUT);
@@ -666,9 +691,9 @@ sub mrs { #{{{
 			}
 		}
 	}
-} #}}}
+}
 
-sub record { #{{{
+sub record {
 	my $dir=shift()->[0];
 	my $ret=shift;
 
@@ -677,6 +702,11 @@ sub record { #{{{
 		print "\n";
 	}
 	elsif ($ret == FAILED) {
+		if ($interactive) {
+			chdir($dir) unless $no_chdir;
+			print STDERR "mr: Starting interactive shell. Exit shell to continue.\n";
+			system((getpwuid($<))[8]);
+		}
 		push @failed, $dir;
 		print "\n";
 	}
@@ -689,9 +719,29 @@ sub record { #{{{
 	else {
 		die "unknown exit status $ret";
 	}
-} #}}}
+}
+
+sub showstats {
+	my $action=shift;
+	if (! @ok && ! @failed && ! @skipped) {
+		die "mr $action: no repositories found to work on\n";
+	}
+	print "mr $action: finished (".join("; ",
+		showstat($#ok+1, "ok", "ok"),
+		showstat($#failed+1, "failed", "failed"),
+		showstat($#skipped+1, "skipped", "skipped"),
+	).")\n" unless $quiet;
+	if ($stats) {
+		if (@skipped) {
+			print "mr $action: (skipped: ".join(" ", @skipped).")\n" unless $quiet;
+		}
+		if (@failed) {
+			print STDERR "mr $action: (failed: ".join(" ", @failed).")\n";
+		}
+	}
+}
 
-sub showstat { #{{{
+sub showstat {
 	my $count=shift;
 	my $singular=shift;
 	my $plural=shift;
@@ -699,19 +749,206 @@ sub showstat { #{{{
 		return "$count ".($count > 1 ? $plural : $singular);
 	}
 	return;
-} #}}}
+}
+
+# an ordered list of repos
+sub repolist {
+	my @list;
+	foreach my $topdir (sort keys %config) {
+		foreach my $subdir (sort keys %{$config{$topdir}}) {
+			push @list, {
+				topdir => $topdir,
+				subdir => $subdir,
+				order => $config{$topdir}{$subdir}{order},
+			};
+		}
+	}
+	return sort {
+		$a->{order}  <=> $b->{order}
+		             ||
+		$a->{topdir} cmp $b->{topdir}
+		             ||
+		$a->{subdir} cmp $b->{subdir}
+	} @list;
+}
+
+# figure out which repos to act on
+sub selectrepos {
+	my @repos;
+	foreach my $repo (repolist()) {
+		my $topdir=$repo->{topdir};
+		my $subdir=$repo->{subdir};
+
+		next if $subdir eq 'DEFAULT';
+		my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
+		my $d=$directory;
+		$dir.="/" unless $dir=~/\/$/;
+		$d.="/" unless $d=~/\/$/;
+		next if $dir ne $d && $dir !~ /^\Q$d\E/;
+		if (defined $max_depth) {
+			my @a=split('/', $dir);
+			my @b=split('/', $d);
+			do { } while (@a && @b && shift(@a) eq shift(@b));
+			next if @a > $max_depth || @b > $max_depth;
+		}
+		push @repos, [$dir, $topdir, $subdir];
+	}
+	if (! @repos) {
+		# fallback to find a leaf repo
+		foreach my $repo (reverse repolist()) {
+			my $topdir=$repo->{topdir};
+			my $subdir=$repo->{subdir};
+			
+			next if $subdir eq 'DEFAULT';
+			my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
+			my $d=$directory;
+			$dir.="/" unless $dir=~/\/$/;
+			$d.="/" unless $d=~/\/$/;
+			if ($d=~/^\Q$dir\E/) {
+				push @repos, [$dir, $topdir, $subdir];
+				last;
+			}
+		}
+		$no_chdir=1;
+	}
+	return @repos;
+}
+
+sub expandenv {
+	my $val=shift;
+	
+
+	if ($val=~/\$/) {
+		$val=`echo "$val"`;
+		chomp $val;
+	}
+	
+	return $val;
+}
+
+my %trusted;
+sub is_trusted_config {
+	my $config=shift; # must be abs_pathed already
+
+	# We always trust ~/.mrconfig.
+	return 1 if $config eq abs_path("$ENV{HOME}/.mrconfig");
+
+	return 1 if $trust_all;
+
+	my $trustfile=$ENV{HOME}."/.mrtrust";
+
+	if (! -e $trustfile) {
+		print "mr: Assuming $config is trusted.\n";
+		print "mr: For better security, you are encouraged to create ~/.mrtrust\n";
+		print "mr: and list all trusted mrconfig files in it.\n";
+		return 1;
+	}
+
+	if (! %trusted) {
+		$trusted{"$ENV{HOME}/.mrconfig"}=1;
+		open (TRUST, "<", $trustfile) || die "$trustfile: $!";
+		while (<TRUST>) {
+			chomp;
+			s/^~\//$ENV{HOME}\//;
+			$trusted{abs_path($_)}=1;
+		}
+		close TRUST;
+	}
+
+	return $trusted{$config};
+}
+
+
+sub is_trusted_repo {
+	my $repo=shift;
+	
+	# Tightly limit what is allowed in a repo name.
+	# No ../, no absolute paths, and no unusual filenames
+	# that might try to escape to the shell.
+	return $repo =~ /^[-_.+\/A-Za-z0-9]+$/ &&
+	       $repo !~ /\.\./ && $repo !~ /^\//;
+}
+
+sub is_trusted_checkout {
+	my $command=shift;
+	
+	# To determine if the command is safe, compare it with the
+	# *_trusted_checkout config settings. Those settings are
+	# templates for allowed commands, so make sure that each word
+	# of the command matches the corresponding word of the template.
+	
+	my @words;
+	foreach my $word (split(' ', $command)) {
+		# strip quoting
+		if ($word=~/^'(.*)'$/) {
+			$word=$1;
+		}
+		elsif ($word=~/^"(.*)"$/) {
+			$word=$1;
+		}
+
+		push @words, $word;
+	}
+
+	foreach my $key (grep { /_trusted_checkout$/ }
+	                 keys %{$config{''}{DEFAULT}}) {
+		my @twords=split(' ', $config{''}{DEFAULT}{$key});
+		next if @words > @twords;
+
+		my $match=1;
+		my $url;
+		for (my $c=0; $c < @twords && $match; $c++) {
+			if ($twords[$c] eq '$url') {
+				# Match all the typical characters found in
+				# urls, plus @ which svn can use. Note
+				# that the "url" might also be a local
+				# directory.
+				$match=(
+					defined $words[$c] &&
+					$words[$c] =~ /^[-_.+:@\/A-Za-z0-9]+$/
+				);
+				$url=$words[$c];
+			}
+			elsif ($twords[$c] eq '$repo') {
+				# If a repo is not specified, assume it
+				# will be the last path component of the
+				# url, or something derived from it, and
+				# check that.
+				if (! defined $words[$c] && defined $url) {
+					($words[$c])=$url=~/\/([^\/]+)\/?$/;
+				}
+
+				$match=(
+					defined $words[$c] &&
+					is_trusted_repo($words[$c])
+				);
+			}
+			elsif (defined $words[$c] && $twords[$c] eq $words[$c]) {
+				$match=1;
+			}
+			else {
+				$match=0;
+			}
+		}
+		return 1 if $match;
+	}
+
+	return 0;
+}
 
 my %loaded;
-sub loadconfig { #{{{
+sub loadconfig {
 	my $f=shift;
 
 	my @toload;
 
 	my $in;
 	my $dir;
+	my $trusted;
 	if (ref $f eq 'GLOB') {
 		$dir="";
-		$in=$f;	
+		$in=$f;
+		$trusted=1;
 	}
 	else {
 		if (! -e $f) {
@@ -724,6 +961,8 @@ sub loadconfig { #{{{
 		}
 		$loaded{$absf}=1;
 
+		$trusted=is_trusted_config($absf);
+
 		($dir)=$f=~/^(.*\/)[^\/]+$/;
 		if (! defined $dir) {
 			$dir=".";
@@ -762,6 +1001,15 @@ sub loadconfig { #{{{
 		next if /^\s*\#/ || /^\s*$/;
 		if (/^\[([^\]]*)\]\s*$/) {
 			$section=$1;
+
+			if (! $trusted) {
+				if (! is_trusted_repo($section) ||
+				    $section eq 'ALIAS' ||
+				    $section eq 'DEFAULT') {
+					die "mr: illegal section \"[$section]\" in untrusted $f line $line\n";
+				}
+			}
+			$section=expandenv($section) if $trusted;
 		}
 		elsif (/^(\w+)\s*=\s*(.*)/) {
 			my $parameter=$1;
@@ -775,6 +1023,26 @@ sub loadconfig { #{{{
 				chomp $value;
 			}
 
+			if (! $trusted) {
+				# Untrusted files can only contain checkout
+				# parameters.
+				if ($parameter ne 'checkout') {
+					die "mr: illegal setting \"$parameter=$value\" in untrusted $f line $line\n";
+				}
+				if (! is_trusted_checkout($value)) {
+					die "mr: illegal checkout command \"$value\" in untrusted $f line $line\n";
+				}
+			}
+
+			if ($parameter eq "include") {
+				print "mr: including output of \"$value\"\n" if $verbose;
+				unshift @lines, `$value`;
+				if ($?) {
+					print STDERR "mr: include command exited nonzero ($?)\n";
+				}
+				next;
+			}
+
 			if (! defined $section) {
 				die "$f line $.: parameter ($parameter) not in section\n";
 			}
@@ -792,18 +1060,23 @@ sub loadconfig { #{{{
 			}
 			else {
 				$config{$dir}{$section}{$parameter}=$value;
-				$knownactions{$parameter}=1;
+				if ($parameter =~ /.*_(.*)/) {
+					$knownactions{$1}=1;
+				}
+				else {
+					$knownactions{$parameter}=1;
+				}
 				if ($parameter eq 'chain' &&
 				    length $dir && $section ne "DEFAULT" &&
 				    -e $dir.$section."/.mrconfig") {
 					my $ret=system($value);
 					if ($ret != 0) {
 						if (($? & 127) == 2) {
-							print STDERR "mr $action: chain test interrupted\n";
+							print STDERR "mr: chain test interrupted\n";
 							exit 2;
 						}
 						elsif ($? & 127) {
-							print STDERR "mr $action: chain test received signal ".($? & 127)."\n";
+							print STDERR "mr: chain test received signal ".($? & 127)."\n";
 						}
 					}
 					else {
@@ -820,9 +1093,9 @@ sub loadconfig { #{{{
 	foreach (@toload) {
 		loadconfig($_);
 	}
-} #}}}
+}
 
-sub modifyconfig { #{{{
+sub modifyconfig {
 	my $f=shift;
 	# the section to modify or add
 	my $targetsection=shift;
@@ -873,7 +1146,7 @@ sub modifyconfig { #{{{
 				$addfields->();
 			}
 
-			$section=$1;
+			$section=expandenv($1);
 
 			push @out, $_;
 		}
@@ -917,11 +1190,259 @@ sub modifyconfig { #{{{
 	open(my $out, ">", $f) || die "mr: write $f: $!\n";
 	print $out @out;
 	close $out;	
-} #}}}
+}
+
+sub dispatch {
+	my $action=shift;
+
+	# actions that do not operate on all repos
+	if ($action eq 'help') {
+		help(@ARGV);
+	}
+	elsif ($action eq 'config') {
+		config(@ARGV);
+	}
+	elsif ($action eq 'register') {
+		register(@ARGV);
+	}
+	elsif ($action eq 'bootstrap') {
+		bootstrap();
+	}
+	elsif ($action eq 'remember' ||
+	       $action eq 'offline' ||
+	       $action eq 'online') {
+		my @repos=selectrepos;
+		action($action, @{$repos[0]}) if @repos;
+		exit 0;
+	}
+
+	if (!$jobs || $jobs > 1) {
+		mrs($action, selectrepos());
+	}
+	else {
+		foreach my $repo (selectrepos()) {
+			record($repo, action($action, @$repo));
+		}
+	}
+}
+
+sub help {
+	exec($config{''}{DEFAULT}{help}) || die "exec: $!";
+}
+
+sub config {
+	if (@_ < 2) {
+		die "mr config: not enough parameters\n";
+	}
+	my $section=shift;
+	if ($section=~/^\//) {
+		# try to convert to a path relative to the config file
+		my ($dir)=$ENV{MR_CONFIG}=~/^(.*\/)[^\/]+$/;
+		$dir=abs_path($dir);
+		$dir.="/" unless $dir=~/\/$/;
+		if ($section=~/^\Q$dir\E(.*)/) {
+			$section=$1;
+		}
+	}
+	my %changefields;
+	foreach (@_) {
+		if (/^([^=]+)=(.*)$/) {
+			$changefields{$1}=$2;
+		}
+		else {
+			my $found=0;
+			foreach my $topdir (sort keys %config) {
+				if (exists $config{$topdir}{$section} &&
+				    exists $config{$topdir}{$section}{$_}) {
+					print $config{$topdir}{$section}{$_}."\n";
+					$found=1;
+					last if $section eq 'DEFAULT';
+				}
+			}
+			if (! $found) {
+				die "mr config: $section $_ not set\n";
+			}
+		}
+	}
+	modifyconfig($ENV{MR_CONFIG}, $section, %changefields) if %changefields;
+	exit 0;
+}
+
+sub register {
+	if ($config_overridden) {
+		# Find the directory that the specified config file is
+		# located in.
+		($directory)=abs_path($ENV{MR_CONFIG})=~/^(.*\/)[^\/]+$/;
+	}
+	else {
+		# Find the closest known mrconfig file to the current
+		# directory.
+		$directory.="/" unless $directory=~/\/$/;
+		my $foundconfig=0;
+		foreach my $topdir (reverse sort keys %config) {
+			next unless length $topdir;
+			if ($directory=~/^\Q$topdir\E/) {
+				$ENV{MR_CONFIG}=$configfiles{$topdir};
+				$directory=$topdir;
+				$foundconfig=1;
+				last;
+			}
+		}
+		if (! $foundconfig) {
+			$directory=""; # no config file, use builtin
+		}
+	}
+	if (@ARGV) {
+		my $subdir=shift @ARGV;
+		if (! chdir($subdir)) {
+			print STDERR "mr register: failed to chdir to $subdir: $!\n";
+		}
+	}
+
+	$ENV{MR_REPO}=getcwd();
+	my $command=findcommand("register", $ENV{MR_REPO}, $directory, 'DEFAULT', 0);
+	if (! defined $command) {
+		die "mr register: unknown repository type\n";
+	}
+
+	$ENV{MR_REPO}=~s/.*\/(.*)/$1/;
+	$command="set -e; ".$config{$directory}{DEFAULT}{lib}."\n".
+		"my_action(){ $command\n }; my_action ".
+		join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
+	print "mr register: running >>$command<<\n" if $verbose;
+	exec($command) || die "exec: $!";
+}
+
+sub bootstrap {
+	my $url=shift @ARGV;
+
+	if (! defined $url || ! length $url) {
+		die "mr: bootstrap requires url\n";
+	}
+
+	if (-e ".mrconfig") {
+		die "mr: .mrconfig file already exists, not overwriting with $url\n";
+	}
+
+	if (system("curl", "-s", $url, "-o", ".mrconfig") != 0) {
+		die "mr: download of $url failed\n";
+	}
+
+	exec("mr $ENV{MR_SWITCHES} -c .mrconfig checkout");
+	die "failed to run mr checkout";
+}
+
+# alias expansion and command stemming
+sub expandaction {
+	my $action=shift;
+	if (exists $alias{$action}) {
+		$action=$alias{$action};
+	}
+	if (! exists $knownactions{$action}) {
+		my @matches = grep { /^\Q$action\E/ }
+			keys %knownactions, keys %alias;
+		if (@matches == 1) {
+			$action=$matches[0];
+		}
+		elsif (@matches == 0) {
+			die "mr: unknown action \"$action\" (known actions: ".
+				join(", ", sort keys %knownactions).")\n";
+		}
+		else {
+			die "mr: ambiguous action \"$action\" (matches: ".
+				join(", ", @matches).")\n";
+		}
+	}
+	return $action;
+}
+
+sub find_nearest_mrconfig {
+	my $dir=getcwd();
+	while (length $dir) {
+		if (-e "$dir/.mrconfig") {
+			return "$dir/.mrconfig";
+		}
+		$dir=~s/\/[^\/]*$//;
+	}
+	die "no .mrconfig found in path\n";
+}
+
+sub getopts {
+	my @saved=@ARGV;
+	Getopt::Long::Configure("bundling", "no_permute");
+	my $result=GetOptions(
+		"d|directory=s" => sub { $directory=abs_path($_[1]) },
+		"c|config=s" => sub { $ENV{MR_CONFIG}=$_[1]; $config_overridden=1 },
+		"p|path" => sub { $ENV{MR_CONFIG}=find_nearest_mrconfig(); $config_overridden=1 },
+		"v|verbose" => \$verbose,
+		"q|quiet" => \$quiet,
+		"s|stats" => \$stats,
+		"i|interactive" => \$interactive,
+		"n|no-recurse:i" => \$max_depth,
+		"j|jobs:i" => \$jobs,
+		"t|trust-all" => \$trust_all,
+	);
+	if (! $result || @ARGV < 1) {
+		die("Usage: mr [options] action [params ...]\n".
+		    "(Use mr help for man page.)\n");
+	}
+	
+	$ENV{MR_SWITCHES}="";
+	foreach my $option (@saved) {
+		last if $option eq $ARGV[0];
+		$ENV{MR_SWITCHES}.="$option ";
+	}
+}
+
+sub init {
+	$SIG{INT}=sub {
+		print STDERR "mr: interrupted\n";
+		exit 2;
+	};
+	
+	# This can happen if it's run in a directory that was removed
+	# or other strangeness.
+	if (! defined $directory) {
+		die("mr: failed to determine working directory\n");
+	}
+	# Make sure MR_CONFIG is an absolute path, but don't use abs_path since
+	# the config file might be a symlink to elsewhere, and the directory it's
+	# in is significant.
+	if ($ENV{MR_CONFIG} !~ /^\//) {
+		$ENV{MR_CONFIG}=getcwd()."/".$ENV{MR_CONFIG};
+	}
+	# Try to set MR_PATH to the path to the program.
+	eval {
+		use FindBin qw($Bin $Script);
+		$ENV{MR_PATH}=$Bin."/".$Script;
+	};
+}
+
+sub main {
+	getopts();
+	init();
+
+	loadconfig(\*DATA);
+	loadconfig($ENV{MR_CONFIG});
+	#use Data::Dumper; print Dumper(\%config);
+	
+	my $action=expandaction(shift @ARGV);
+	dispatch($action);
+	showstats($action);
+
+	if (@failed) {
+		exit 1;
+	}
+	elsif (! @ok && @skipped) {
+		exit 1;
+	}
+	else {
+		exit 0;
+	}
+}
 
 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
-#DATA{{{
 __DATA__
 [ALIAS]
 co = checkout
@@ -935,6 +1456,12 @@ lib =
 		echo "mr: $@" >&2
 		exit 1
 	}
+	warning() {
+		echo "mr (warning): $@" >&2
+	}
+	info() {
+		echo "mr: $@" >&2
+	}
 	hours_since() {
 		if [ -z "$1" ] || [ -z "$2" ]; then
 			error "mr: usage: hours_since action num"
@@ -948,7 +1475,7 @@ lib =
 		if [ -z "$flagfile" ]; then
 			error "cannot determine flag filename"
 		fi
-		delta=$(perl -wle 'print -f shift() ? int((-M _) * 24) : 9999' "$flagfile")
+		delta=`perl -wle 'print -f shift() ? int((-M _) * 24) : 9999' "$flagfile"`
 		if [ "$delta" -lt "$2" ]; then
 			exit 0
 		else
@@ -957,147 +1484,158 @@ lib =
 		fi
 	}
 
-update =
-	if [ -d "$MR_REPO"/.svn ]; then
-		svn update "$@"
-	elif [ -d "$MR_REPO"/.git ]; then
-		if [ -z "$@" ]; then
-			git pull -t origin master
-		else
-			git pull "$@"
-		fi
-	elif [ -d "$MR_REPO"/.bzr ]; then
-		bzr merge "$@"
-	elif [ -d "$MR_REPO"/CVS ]; then
-		cvs update "$@"
-	elif [ -d "$MR_REPO"/.hg ]; then
-		hg pull "$@" && hg update "$@"
-	elif [ -d "$MR_REPO"/_darcs ]; then
-		darcs pull -a "$@"
-	else
-		error "unknown repo type"
-	fi
-status =
-	if [ -d "$MR_REPO"/.svn ]; then
-		svn status "$@"
-	elif [ -d "$MR_REPO"/.git ]; then
-		git status "$@" || true
-	elif [ -d "$MR_REPO"/.bzr ]; then
-		bzr status "$@"
-	elif [ -d "$MR_REPO"/CVS ]; then
-		cvs status "$@"
-	elif [ -d "$MR_REPO"/.hg ]; then
-		hg status "$@"
-	elif [ -d "$MR_REPO"/_darcs ]; then
-		darcs whatsnew -ls "$@"
-	else
-		error "unknown repo type"
+svn_test = test -d "$MR_REPO"/.svn
+git_test = test -d "$MR_REPO"/.git
+bzr_test = test -d "$MR_REPO"/.bzr
+cvs_test = test -d "$MR_REPO"/CVS
+hg_test  = test -d "$MR_REPO"/.hg
+darcs_test = test -d "$MR_REPO"/_darcs
+git_bare_test =
+	test -d "$MR_REPO"/refs/heads && test -d "$MR_REPO"/refs/tags &&
+	test -d "$MR_REPO"/objects && test -f "$MR_REPO"/config &&
+	test "`GIT_CONFIG="$MR_REPO"/config git config --get core.bare`" = true
+
+svn_update = svn update "$@"
+git_update = git pull "$@"
+bzr_update = bzr merge --pull "$@"
+cvs_update = cvs update "$@"
+hg_update  = hg pull "$@" && hg update "$@"
+darcs_update = darcs pull -a "$@"
+
+svn_status = svn status "$@"
+git_status = git status "$@" || true
+bzr_status = bzr status "$@"
+cvs_status = cvs status "$@"
+hg_status  = hg status "$@"
+darcs_status = darcs whatsnew -ls "$@" || true
+
+svn_commit = svn commit "$@"
+git_commit = git commit -a "$@" && git push --all
+bzr_commit = bzr commit "$@" && bzr push
+cvs_commit = cvs commit "$@"
+hg_commit  = hg commit -m "$@" && hg push
+darcs_commit = darcs record -a -m "$@" && darcs push -a
+
+git_record = git commit -a "$@"
+bzr_record = bzr commit "$@"
+hg_record  = hg commit -m "$@"
+darcs_record = darcs record -a -m "$@"
+
+svn_push = :
+git_push = git push "$@"
+bzr_push = bzr push "$@"
+cvs_push = :
+hg_push = hg push "$@"
+darcs_push = darcs push -a "$@"
+
+svn_diff = svn diff "$@"
+git_diff = git diff "$@"
+bzr_diff = bzr diff "$@"
+cvs_diff = cvs diff "$@"
+hg_diff  = hg diff "$@"
+darcs_diff = darcs diff -u "$@"
+
+svn_log = svn log "$@"
+git_log = git log "$@"
+bzr_log = bzr log "$@"
+cvs_log = cvs log "$@"
+hg_log  = hg log "$@"
+darcs_log = darcs changes "$@"
+git_bare_log = git log "$@"
+
+svn_register =
+	url=`LC_ALL=C svn info . | grep -i '^URL:' | cut -d ' ' -f 2`
+	if [ -z "$url" ]; then
+		error "cannot determine svn url"
 	fi
-commit =
-	if [ -d "$MR_REPO"/.svn ]; then
-		svn commit "$@"
-	elif [ -d "$MR_REPO"/.git ]; then
-		git commit -a "$@" && git push --all
-	elif [ -d "$MR_REPO"/.bzr ]; then
-		bzr commit "$@" && bzr push
-	elif [ -d "$MR_REPO"/CVS ]; then
-		cvs commit "$@"
-	elif [ -d "$MR_REPO"/.hg ]; then
-		hg commit -m "$@" && hg push
-	elif [ -d "$MR_REPO"/_darcs ]; then
-		darcs commit -a -m "$@" && darcs push -a
-	else
-		error "unknown repo type"
+	echo "Registering svn url: $url in $MR_CONFIG"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="svn co '$url' '$MR_REPO'"
+git_register = 
+	url="`LC_ALL=C git config --get remote.origin.url`" || true
+	if [ -z "$url" ]; then
+		error "cannot determine git url"
 	fi
-diff =
-	if [ -d "$MR_REPO"/.svn ]; then
-		svn diff "$@"
-	elif [ -d "$MR_REPO"/.git ]; then
-		git diff "$@"
-	elif [ -d "$MR_REPO"/.bzr ]; then
-		bzr diff "$@"
-	elif [ -d "$MR_REPO"/CVS ]; then
-		cvs diff "$@"
-	elif [ -d "$MR_REPO"/.hg ]; then
-		hg diff "$@"
-	elif [ -d "$MR_REPO"/_darcs ]; then
-		darcs diff "$@"
-	else
-		error "unknown repo type"
+	echo "Registering git url: $url in $MR_CONFIG"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="git clone '$url' '$MR_REPO'"
+bzr_register =
+	url="`LC_ALL=C bzr info . | egrep -i 'checkout of branch|parent branch' | awk '{print $NF}'`"
+	if [ -z "$url" ]; then
+		error "cannot determine bzr url"
 	fi
-log =
-	if [ -d "$MR_REPO"/.svn ]; then
-		svn log"$@"
-	elif [ -d "$MR_REPO"/.git ]; then
-		git log "$@"
-	elif [ -d "$MR_REPO"/.bzr ]; then
-		bzr log "$@"
-	elif [ -d "$MR_REPO"/CVS ]; then
-		cvs log "$@"
-	elif [ -d "$MR_REPO"/.hg ]; then
-		hg log "$@"
-	elif [ -d "$MR_REPO"/_darcs ]; then
-		darcs changes "$@"
-	else
-		error "unknown repo type"
-	fi
-register =
-	if [ -n "$1" ]; then
-		cd "$1"
-	fi
-	basedir="$(basename $(pwd))"
-	if [ -d .svn ]; then
-		url=$(LANG=C svn info . | grep -i ^URL: | cut -d ' ' -f 2)
-		if [ -z "$url" ]; then
-			error "cannot determine svn url"
-		fi
-		echo "Registering svn url: $url in $MR_CONFIG"
-		mr -c "$MR_CONFIG" config "$(pwd)" checkout="svn co $url $basedir"
-	elif [ -d .git ]; then
-		url=$(LANG=C git-config --get remote.origin.url)
-		if [ -z "$url" ]; then
-			error "cannot determine git url"
+	echo "Registering bzr url: $url in $MR_CONFIG"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="bzr clone '$url' '$MR_REPO'"
+cvs_register =
+	repo=`cat CVS/Repository`
+	root=`cat CVS/Root`
+	if [ -z "$root" ]; then
+		error "cannot determine cvs root"
 		fi
-		echo "Registering git url: $url in $MR_CONFIG"
-		mr -c "$MR_CONFIG" config "$(pwd)" checkout="git clone $url $basedir"
-	elif [ -d .bzr ]; then
-		url=$(cat .bzr/branch/parent)
-		if [ -z "$url" ]; then
-			error "cannot determine bzr url"
-		fi
-		echo "Registering bzr url: $url in $MR_CONFIG"
-		mr -c "$MR_CONFIG" config "$(pwd)" checkout="bzr clone $url $basedir"
-	elif [ -d CVS ]; then
-		repo=$(cat CVS/Repository)
-		root=$(cat CVS/Root)
-		if [ -z "$root" ]; then
-			error "cannot determine cvs root"
-		fi
-		echo "Registering cvs repository $repo at root $root"
-		mr -c "$MR_CONFIG" config "$(pwd)" \
-			checkout="cvs -d '$root' co -d $basedir $repo"
-	elif [ -d .hg ]; then
-		url=$(hg showconfig paths.default)
-		echo "Registering mercurial repo url: $url in $MR_CONFIG"
-		mr -c "$MR_CONFIG" config "$(pwd)" \
-			checkout="hg clone $url $basedir"
-	elif [ -d _darcs ]; then
-		url=$(cat _darcs/prefs/defaultrepo)
-		echo "Registering darcs repository $url in $MR_CONFIG"
-		mr -c "$MR_CONFIG" config "$(pwd)" \
-			checkout="darcs get $url $basedir"
-	else
-		error "unable to register this repo type"
+	echo "Registering cvs repository $repo at root $root"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="cvs -d '$root' co -d '$MR_REPO' '$repo'"
+hg_register = 
+	url=`hg showconfig paths.default`
+	echo "Registering mercurial repo url: $url in $MR_CONFIG"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="hg clone '$url' '$MR_REPO'"
+darcs_register = 
+	url=`cat _darcs/prefs/defaultrepo`
+	echo "Registering darcs repository $url in $MR_CONFIG"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="darcs get '$url' '$MR_REPO'"
+git_bare_register = 
+	url="`LC_ALL=C GIT_CONFIG=config git config --get remote.origin.url`" || true
+	if [ -z "$url" ]; then
+		error "cannot determine git url"
 	fi
+	echo "Registering git url: $url in $MR_CONFIG"
+	mr -c "$MR_CONFIG" config "`pwd`" checkout="git clone --bare '$url' '$MR_REPO'"
+
+svn_trusted_checkout = svn co $url $repo
+svn_alt_trusted_checkout = svn checkout $url $repo
+git_trusted_checkout = git clone $url $repo
+bzr_trusted_checkout = bzr clone $url $repo
+# cvs: too hard
+hg_trusted_checkout = hg clone $url $repo
+darcs_trusted_checkout = darcs get $url $repo
+git_bare_trusted_checkout = git clone --bare $url $repo
+
 help =
 	if [ ! -e "$MR_PATH" ]; then
 		error "cannot find program path"
 	fi
-	(pod2man -c mr "$MR_PATH" | man -l -) || error "pod2man or man failed"
+	tmp=$(mktemp -t mr.XXXXXXXXXX) || error "mktemp failed"
+	trap "rm -f $tmp" exit
+	pod2man -c mr "$MR_PATH" > "$tmp" || error "pod2man failed"
+	man -l "$tmp" || error "man failed"
 list = true
 config = 
+bootstrap = 
+
+online =
+	if [ -s ~/.mrlog ]; then
+		info "running offline commands"
+		mv -f ~/.mrlog ~/.mrlog.old
+		if ! sh -e ~/.mrlog.old; then
+			error "offline command failed; left in ~/.mrlog.old"
+		fi
+		rm -f ~/.mrlog.old
+	else
+		info "no offline commands to run"
+	fi
+offline =
+	umask 077
+	touch ~/.mrlog
+	info "offline mode enabled"
+remember =
+	info "remembering command: 'mr $@'"
+	command="mr -d '$(pwd)' $MR_SWITCHES"
+	for w in "$@"; do
+		command="$command '$w'"
+	done
+	if [ ! -e ~/.mrlog ] || ! grep -q -F "$command" ~/.mrlog; then
+		echo "$command" >> ~/.mrlog
+	fi
 
 ed = echo "A horse is a horse, of course, of course.."
 T = echo "I pity the fool."
 right = echo "Not found."
-#}}}
+
+# vim:sw=8:sts=0:ts=8:noet